Specimen Geometry Effects on Oxidation Behavior of Nuclear Graphite
|
|
- Austen Patterson
- 5 years ago
- Views:
Transcription
1 Carbon Science Vol. 7, No. 3 September 2006 pp Specimen Geometry Effects on Oxidation Behavior of Nuclear Graphite Kwang-Youn Cho, Kyung-Ja Kim, Yun-Soo Lim 1, Yun-Joong Chung 1 and Se-Hwan Chi 2 Division of Nano Materials Application, KICET, Seoul , Korea 1 Department of Ceramic Engineering, Myongji University, Yongin , Korea 2 Department of Nuclear Hydrogen Project, KAERI, Daejeon , Korea Ì kycho@kicet.re.kr (Received July 3, 2006; Accepted September 18, 2006) Abstract Graphite has hexagonal closed packing structure with two bonding characteristics of van der Waals bonding between the carbon layers at c axis, and covalent bonding in the carbon layer at a and b axis. Graphite has high tolerant to the extreme conditions of high temperature and neutron irradiations rather than any other materials of metals and ceramics. However, carbon elements easily react with oxygen at as low as 400C. Considering the increasing production of today of hydrogen and electricity with a nuclear reactor, study of oxidation characteristics of graphite is very important, and essential for the life evaluation and design of the nuclear reactor. Since the oxidation behaviors of graphite are dependent on the shapes of testing specimen, critical care is required for evaluation of nuclear reactor graphite materials. In this work, oxidation rate and amounts of the isotropic graphite (IG-110, Toyo Carbon), currently being used for the Koran nuclear reactor, are investigated at various temperature. Oxidation process or principle of graphite was figured out by measuring the oxidation rate, and relation between oxidation rate and sample shape are understood. In the oxidation process, shape effect of volume, surface area, and surface to volume ratio are investigated at 600 C, based on the sample of ASTM C Keywords : Oxidation, Nuclear, Geometry, Thermal Gravimetry, Chemical Reaction 1. lp c p van der Waals, a b p o p p s p ~v s p p sp. p k c p d r q o p, p a b p r r m lr. lp l p p p s v p. lp o ˆ po l pp r p n kr l pl e p n. lp p p r rq,, q ll n p. lp p t q s l p lˆ p l o rp. q oq o p l p l o p q ~, vv~ l lp n p. o q lp 800 o C p ml t q s pl n p. t q vl s rp p p oq vr l r ql pˆ p o r qp oq l r rp rp p p oq p v. t q s l k v p e rp dp v rp v lp t q s l p rp r e q }k r ql o p ˆo. t q s l l r v p rl p pl. l lp t q s v p Ž}p eq lp Ž}p oq l p p e oq krl rp p p l lp Ž}p eq e v lp ~ p r p. oq l n lp ~ rp t q s pnl m p p. l p o ˆ (C) p vp ll rp p l p. p oq ml nm p p, q vtp n oq nms p 1000 o C p p l o m kr o p n tn. v lp l l v k. lp 450 o Cl 1000 o C p v m ml o ˆ p [1] p oq l n ll pp oq p er nms l l r. ll 600 o C p rml r l e p p ASTM C [2]l re l p. v ASTM C l p p r p m p p
2 Specimen Geometry Effects on Oxidation Behavior of Nuclear Graphite 197 ˆ oq e, l l m v. l oq l n nˆ p l IG-110p m l m m. m, e l v r l o p p l m p m. e p l o e p ASTM C l p l 600 o C l qe ov l, r, r/ l m p m. 2. p l l n e p oq l t n lq p nˆ p IG-110p. l(ig- 110)p CIP p ~ rs l p p 1p ˆ p. oq p q, ~, vv~ l n l ~ p < 20 ppmp g/cm 3 p ˆ p 8.93 GPa, 37.4 MPa, k 51p. oq l IG-110p p p 10 μm n p p v p. y m l e p Mettler toledo p SDTA 851e n l l p p l (%) (wt%/min) r m. 600, 700, 800, 900, 1000, 1100, 1200 o Cl 12 e ov l lp e. (dry air) 40 ml/min tp m. le p l q, ASTM C p e r l Muffle Funace n l lp l 600 o Cl t 12 e ov l m [2]. p e p o p v p p m. e p v 1 mm, 4 mm, 6 mm, 10 mm 60 mm 5sp e p 5 j e e p, r, r/ Table 1. Properties of nuclear graphite (IG-110) Properties IG-110 Bulk Density (g/cm 3 ) 1.76 Young's Modulus (GPa) 8.93 Flexural Strength (MPa) 37.4 Shore Hardness 51 Impurity (ppm) < 20 Ave. Grain Size (μm) 10 p l m p m. 3. y yp Fig. 1, 2 l(ig-110) 600, 700, 800, 900, 1000, o Cl 12 e ov l l ˆ p. m v l l p pl. 600 o Cl 1000 o C v m v l r 1000 o C p l d r. m l ove p v l p v e m. p Fuller Okoh 750 o C l e l m p p [3]. eq l l p p p p n r v. s v l p p ƒv m r rp eq l r l 0p p. p p l 40~50 wt% v v kk p f l p p p ƒv p p p. v ove v l v l p l p l v r l t pp p mlp 1000 o C p l v p v o C p l pp l vt l l p p v kpl v e p. lp o p v lp r ˆl p l k p. o p rt o, Fig. 1. TG Curves of nuclear graphite in terms of temperatures.
3 198 K.-Y. Cho et al. / Carbon Science Vol. 7, No. 3 (2006) l p pl 1000 o C p l pp l vt l pl o l p p [3, 6]. x w *( yp Fig. 2. Oxidation rate of nuclear graphite in terms of temperatures. p rp l eq [4]. rl (O 2 )m ˆ (C) CO 2 po oq kr p l rp. p rp v 3n j v. v, e p v 3n v. l l p CO 2 p v eq l l l p r p eˆ eq. rp 3n v l v v CO 2 p p dm }pl v pr rrp rp. p rp 600~1200 o C r m mll p rn 1000 o C p l l vt pp l v k v p p p. Fig. 3p l p p ˆ p o C p l 5 wt% l ˆ l 700 o Cl 33 wt% l ˆ p. p 500~600 o Cp rm mll pl p pl lp Fig. 4p e p l ˆ l. qp e p v p l. 600 o Cl 1000 o Cl l p v p lp qp e p v p l. p rp lp eq 500 o C p l 1000 o C p v lp m ml o. 500 o C l pp l p p, l v k e p m l el pl p v l p l. 800 o C l pp l v kr v rp l t l v Fig. 3. Oxidation weight of nuclear graphite at the maximum oxidation rate as a function of oxidation temperature. Fig. 4. TG of nuclear graphite as a function of diameter.
4 Specimen Geometry Effects on Oxidation Behavior of Nuclear Graphite 199 Fig. 5. TG curves of nuclear graphite in terms of diameter at 800 o C. pl o Cl pp l v n k p l. l v p m e r~p r r v k. 600 o C p pp e p l el l e p p m p lp qp v, qp e p v p l o Cl p pp l vt l pl l e p rp e p p m p lp qk rp qp e l v p l. Fig. 5, 6p 800 o Cl e p r v ˆ p. qp e p ˆ. l e p qp e p q ˆ Fig. 7. Oxidation rate of nuclear graphite in terms of surface area. 600 o Cm 1000 o C m p ˆ p. p p o l p m qp e p ˆ o m l vm e e p pl l p m p p p Ž [7]. v, l v r l m p p Ž, e p l p ˆ p Ž. Fig. 6p l e p ˆ p pre ov p p p. p p e p p CO 2 p r o kk p re ov p Ž. Fig. 7, 8, 9p ASTM C l p l Muffle Furnacel e p l pp r,, r/ ˆ l. r l. Fig. 6. Oxidation rate of nuclear graphite in terms of diameter at 800 o C. Fig. 8. Oxidation rate of nuclear graphite in terms of volume.
5 200 K.-Y. Cho et al. / Carbon Science Vol. 7, No. 3 (2006) Fig. 9. Oxidation rate of nuclear graphite in terms of S/V ratio. 600 o C pl p v l r~l v p l m v p m p lp [5] r m. p v p r/ ˆ e (1)l p d m. r/ =6/D (1) *l D e p Fig. 9p r/ l ˆ l. r/ l r v p. p Fig. 6 l p e p pl vp CO 2 r m p p p qp e p r/ ƒ CO 2 r o l p Ž r/ qp e p pl vp CO 2 r o kk qk v p Ž. l r/ l p n lq p l p ˆ l op p p p. v, ls l osv o l v m o p p o Cl 1000 o C v m v l r 1000 o C p l m v l v ll. m l ove p v l p v e m o C p l 5 wt% l ˆ l 700 o Cl 33 wt%l ˆ p. p 500~600 o Cp rmmll p l p pl lp l p pl 1000 o C p l pp l vt l pl o l p p. qp e p v p l. 600 o Cl 1000 o Cl l p v p lp qp e p v p l. p o l p m qp e p ˆ o m l vm e e p pl l p m p p p Ž. e p ˆ p pre ov l. p p e p p CO 2 p r o kk pre ov p Ž. r/ l r v p. y [1] Xiaowei, L.; Charles, R. J.; Suyuan, Y. Nuclear Engineering and Design 2004, 227, 273. [2] ASTM C [3] Fuller, E. L.; Okoh, J. M. Journal of Nuclear Materials 1997, 240, 241. [4] Chunhe, T.; Jie, G. Journal of Nuclear Materials 1995, 224, 103 [5] Neighbour, G. B.; Hacker, P. J. Materials Letters 2001, 51, 307 [6] Kurumada, A.; Oku, T.; Harada, K.; Kawamata, K.; Sato, S.; Hiraoka, T. Carbon 1997, 35, [7] Moormann, R.; Hinssen, H. K.; Kuhn, K. Nuclear Engineering and Design 2004, 227, 281. [8] Mitchell, B. C.; Smart, J.; Fok, S. L.; Marsden, B. J. Journal of Nuclear Materials 2003, 322, 126. m v l l p pl.
Temperature Control in Autothermal Reforming Reactor
Korean Chem. Eng. Res., Vol. 45, No. 1, February, 2007, pp. 12-16 j mi s m i m j oh qç s Çms Ç 702-701 e 1370 (2006 9o 26p r, 2006 12o 13p }ˆ) Temperature Control in Autothermal Reforming Reactor Song
More informationEffects of Surface Roughness on the Emissivity due to Oxidation of Nuclear Graphite
Effects of Surface Roughness on the Emissivity due to Oxidation of Nuclear Graphite Seung-Gook Seo 1, Jae-Seung Roh 1*, and Se-Hwan Chi 2 1 Kumoh National Institute of Technology, Gumi, Gyeongbuk 730-701,
More information수소가스화기에서석탄의메탄화반응특성. Characteristics of Coal Methanation in a Hydrogasifier
Korean Chem. Eng. Res., Vol. 44, No. 6, December, 2006, pp. 631-635 수소가스화기에서석탄의메탄화반응특성 m Çl qç iyç m Çmm l v l o ˆr l 305-343 r le o q 71-2 (2006 2o 14p r, 2006 8o 8p }ˆ) Characteristics of Coal Methanation
More informationThe Study of Structure Design for Dividing Wall Distillation Column
Korean Chem. Eng. Res., Vol. 45, No. 1, February, 2007, pp. 39-45 r m o Š i m Çm k m d p 712-749 e 214-1 (2006 11o 18p r, 2006 12o 14p }ˆ) The Study of Structure Design for Dividing Wall Distillation Column
More informationParticle Removal on Silicon Wafer Surface by Ozone-HF-NH 4
Korean Chem. Eng. Res., Vol. 45, No. 2, April, 2007, pp. 203-207 -jo- g g oi m lmœ Ž m mm o m Ç m (t)e l 730-724 e p 283 (2006 10o 18p r, 2006 12o 7p }ˆ) Particle Removal on Silicon Wafer Surface by Ozone-HF-NH
More informationMissing Value Estimation and Sensor Fault Identification using Multivariate Statistical Analysis
Korean Chem. Eng. Res., Vol. 45, No. 1, February, 2007, pp. 87-92 l mk ~ m m i~ m m my Çmm 794-784 e q 31 (2006 10o 31p r, 2007 1o 9p }ˆ) Missing Value Estimation and Sensor Fault Identification using
More information경막형용융결정화에의한파라디옥사논과디에틸렌글리콜혼합물로부터파라디옥사논의정제. Purification of p-dioxanone from p-dioxanone and Diethylene Glycol Mixture by a Layer Melt Crystallization
Korean Chem. Eng. Res., Vol. 43, No. 5, October, 2005, pp. 595-602 경막형용융결정화에의한파라디옥사논과디에틸렌글리콜혼합물로부터파라디옥사논의정제 m zk s * l o r l 305-600 re o q 100 * 305-764 re o 220 (2005 6o 15p r, 2005 9o 6p }ˆ) Purification
More informationHistory and Status of the Chum Salmon Enhancement Program in Korea
The Sea Journal of the Korean Society of Oceanography Vol. 12, No. 2, pp. 73 80, May 2007 [Note] {{ n{ {n r~ * r d p n d n History and Status of the Chum Salmon Enhancement Program in Korea CHAE SUNG LEE*,
More informationSeed Production from Pond Cultured Cherry Salmon, e ll, Oncorhynchus masou (Brevoort) ll ll
J. of Aquaculture Vol. 20(1) : 14-18, 2007 µ Journal of Aquaculture Korean Aquaculture Society ~nr {o n~ t{{, Oncorhynchus masou (Brevoort) nn *, f d p ndn Seed Production from Pond Cultured Cherry Salmon,
More informationInfluence of Loading Position and Reaction Gas on Etching Characteristics of PMMA in a Remote Plasma System
Korean Chem. Eng. Res., Vol. 44, No. 5, October, 2006, pp. 483-488 Remote r i l m zi PMMAm Š z Çmk o 200-701 o }e q 2 192-1 (2006 1o 5p r, 2006 6o 16p }ˆ) Influence of Loading Position and Reaction Gas
More informationSurface Reaction Modeling for Plasma Etching of SiO 2
Korean Chem. Eng. Res., Vol. 44, No. 5, October, 2006, pp. 520-527 m r i Ž m m i r, q rl 561-756 r rte v v 1 664-14 (2006 9o 5p r, 2006 9o 26p }ˆ) Surface Reaction Modeling for lasma Etching of SiO 2 Thin
More informationEffect of Precipitation on Operation Range of the CO 2
Korean Chem. Eng. Res., Vol. 45, No. 3, June, 007, pp. 58-63 g g o mk m o oi n m oi iii i lo Ç Ç k Ç p *Ç p * o 305-701 re o 373-1 * l v l o rl 305-343 re o q 71- (006 1o 18p r, 007 1o 11p }ˆ) Effect of
More information/CO/CO 2. Eui-Sub Ahn, Seong-Cheol Jang, Do-Young Choi, Sung-Hyun Kim* and Dae-Ki Choi
Korean Chem. Eng. Res., Vol. 44, No. 5, October, 2006, pp. 460-467 Zeolite 5Ai m /CO m y gm Çm zç iç *Ç l o rl 136-791 ne o 39-1 * 136-709 ne kk 5 1 (2006 2o 23p r, 2006 7o 20p }ˆ) Pure Gas Adsorption
More informationPerformance of Direct Methanol Fuel Cell (DMFC) based on New Electrode Binder (speek/nafion): Effect of Binder Content
Korean Chem. Eng. Res., Vol. 45, No. 4, August, 2007, pp. 391-395 { k n m (speek/nafion) m so j i nsm : m m i o iç o o 305-701 re o 373-1 (2007 2o 16p r, 2007 3o 22p }ˆ) Performance of Direct Methanol
More informationDiscovery Guide. Beautiful, mysterious woman pursued by gunmen. Sounds like a spy story...
Dv G W C T Gp, A T Af Hk T 39 Sp. M Mx Hk p j p v, f M P v...(!) Af Hk T 39 Sp, B,,, UNMISSABLE! T - f 4 p v 150 f-p f x v. Bf, k 4 p v 150. H k f f x? D,,,, v? W k, pf p f p? W f f f? W k k p? T p xp
More informationr*tt7v Progress, Ibe Ur)ft>ersal LaWof J^atare; Th>oagbt, fbe 3olA>er)t of Jier Problems. CHICAGO, SEPTEMBER MRS. ADA FOYE.
7v P U)> L ^; > 3>) P L' PBR 3 892 45 p p p j j pp p j ^ pp p k k k k pp v k! k k p k p p B pp P k p v p : p ' P Bk z v z k p p v v k : ] 9 p p j v p v p xp v v p ^ 8 ; p p p : : x k p pp k p k v k 20
More informationI-1. rei. o & A ;l{ o v(l) o t. e 6rf, \o. afl. 6rt {'il l'i. S o S S. l"l. \o a S lrh S \ S s l'l {a ra \o r' tn $ ra S \ S SG{ $ao. \ S l"l. \ (?
>. 1! = * l >'r : ^, : - fr). ;1,!/!i ;(?= f: r*. fl J :!= J; J- >. Vf i - ) CJ ) ṯ,- ( r k : ( l i ( l 9 ) ( ;l fr i) rf,? l i =r, [l CB i.l.!.) -i l.l l.!. * (.1 (..i -.1.! r ).!,l l.r l ( i b i i '9,
More information[2]... [1]
1 Carbon and silicon are elements in Group IV. Both elements have macromolecular structures. (a) Diamond and graphite are two forms of the element carbon. (i) Explain why diamond is a very hard substance....
More informationLecture 6 - Bonding in Crystals
Lecture 6 onding in Crystals inding in Crystals (Kittel Ch. 3) inding of atoms to form crystals A crystal is a repeated array of atoms Why do they form? What are characteristic bonding mechanisms? How
More informationResearch Article The Influence of Pores on Irradiation Property of Selected Nuclear Graphites
Advances in Materials Science and Engineering Volume 2012, Article ID 640462, 6 pages doi:10.1155/2012/640462 Research Article The Influence of Pores on Irradiation Property of Selected Nuclear Graphites
More informationTemperature Effect on the Retention Behavior of Sugars and Organic Acids on poly (4-vinylpyridine) Resin
Korean Chem. Eng. Res., Vol. 44, No. 1, February, 2006, pp. 35-39 PVP 분리수지에서온도에따른당과유기산의체류특성변화 smçmp *Ç l p, *r l 402-701 p}e n 253 (2005 11o 14p r, 2005 12o 11p }ˆ) Temperature Effect on the Retention
More informationY'* C 0!),.1 / ; ')/ Y 0!)& 1 0R NK& A Y'. 1 ^. ]'Q 1 I1 )H ;". D* 1 = Z)& ^. H N[Qt C =
(-) 393 F!/ $5 $% T K&L =>-? J (&A )/>2 I B!" GH 393/05/07 :K 393/07/23 :7b +B 0 )NO M / Y'* C a23 N/ * = = Z)& ^. ;$ 0'* Y'2 8 OI 53 = ;" ~" O* Y.b ;" ; ')/ Y'* C 0!),. / ; ')/ Y 0!)& 0R NK& A Y'. ^.
More informationModeling for the Recovery of Organic Acid by Bipolar Membrane Electrodialysis
Korean Chem. Eng. Res., Vol. 44, No. 5, October, 26, pp. 476-482 m n ˆ i m l i Çm z p edš 337-71 l s op ek 34 (26 3o 31p r, 26 6o 2p }ˆ) Modeling for the Recovery of Organic cid by ipolar Membrane Electrodialysis
More informationChapter 3. The structure of crystalline solids 3.1. Crystal structures
Chapter 3. The structure of crystalline solids 3.1. Crystal structures 3.1.1. Fundamental concepts 3.1.2. Unit cells 3.1.3. Metallic crystal structures 3.1.4. Ceramic crystal structures 3.1.5. Silicate
More informationOptimal Design of Generalized Process-storage Network Applicable To Polymer Processes
Korean Chem. Eng. Res., Vol. 45, No. 3, une, 007, pp. 49-57 m o n m m o-nmo o n m Çmm * 608-739 e n 100 * 100-715 ne t 3 6 (006 10o p r, 007 3o 9p }ˆ Optmal Desgn of Generalzed Process-storage Networ Applcable
More informationDEVELOPMENT OF A COMBUSTION SYSTEM FOR LIQUID OR GAS SAMPLES
RADIOCARBON, Vol 46, Nr 1, 2004, p 141 145 2004 by the Arizona Board of Regents on behalf of the University of Arizona DEVELOPMENT OF A COMBUSTION SYSTEM FOR LIQUID OR GAS SAMPLES J H Park C S Lee 1 Department
More informationS p e c i a l M a t r i c e s. a l g o r i t h m. intert y msofdiou blystoc
M D O : 8 / M z G D z F zw z z P Dẹ O B M B N O U v O NO - v M v - v v v K M z z - v v MC : B ; 9 ; C vk C G D N C - V z N D v - v v z v W k W - v v z v O v : v O z k k k q k - v q v M z k k k M O k v
More informationPhysical Science 430 LaurenHill Academy
556-430 Physical Science 430 LaurenHill Academy Mid -year Exam January 2007 Allowed materials: Non-graphing Calculator, included periodic table Instructions: Answer all questions on the questionnaire itself.
More informationM09/4/CHEMI/HPM/ENG/TZ2/XX+ CHEMISTRY. Monday 18 May 2009 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES
M09/4/CEMI/PM/ENG/TZ/XX+ 096113 CEMISTRY igher level Paper 1 Monday 18 May 009 (afternoon) 1 hour INSTRUCTIONS TO CANDIDATES Do not open this examination paper until instructed to do so. Answer all the
More informationThank You! $20,000+ Anonymous
T D $20,000+ Ay $10,000+ Fll Fly Cbl T Ew & S Vbl $5,000+ Ay M. & M. T Fll M. Fl H. Hwz D. & M. G A. Ky $2,500+ M. Plp J. Bly, III J & Klly Bzly S T. & My C. Fll Mk & E G R Hy Jy & Ell Jll Fly Ly F Cy
More informationStabilization of HRP Using Hsp90 in Water-miscible Organic Solvent
Korean Chem. Eng. Res., Vol. 44, No. 1, February, 2006, pp. 92-96 Hsp90 을이용한유기용매에서의과산화효소안정화연구 om Ç l * Ç ** Çlio *, n r r, *, ** l o 151-742 ne k e 56-1 (2006 1o 3p r, 2006 2o 3p }ˆ) Stabilization of HRP
More informationDYNAMIC CHARACTERISTICS OF A PARTIALLY FLUID- FILLED CYLINDRICAL SHELL
DOI: 10.5516/NET.2011.43.2.167 DYNAMIC CHARACTERISTICS OF A PARTIALLY FLUID- FILLED CYLINDRICAL SHELL MYUNG JO JHUNG *1, SEON OH YU 1, and YEONG TAEK LIM 2 1 Safety Research Division, Korea Institute of
More informationMOL NM UR PM NUMR L RVON LVL T RWN K PPROV NOT P RVON T NUMR of -N TLP P0 K 0 0K R TLP P0 Z Z0WVX KTN Q U00 0 K KMZ Z R 0 0K 0 0 R K R N00 0 0K 0 K U00 0 K 0 KJ R U00 0 0.ohm R0 W -N Max.0KOM RX0 Min./W
More informationBook of Plans. Application for Development Consent. Thames Tideway Tunnel Thames Water Utilities Limited. Application Reference Number: WWO10001
T Tw T T U App Dvp App R b: O Bk P D R:. Bkb S APFP R : R ()(k), () H p vb Bx F J T p bk App Dvp : Bk P V Bx V S Dw p Pj-w w k p Pj-w w q p Pj-w w p Pj-w w w p p S w A S Tk S w H Pp S S w B E S w P Ebk
More informationHow do I join? . Insurance is available for $10.00 for Night Club Cards and $25 for Night Season Passes.
S C Hg S Sk C W S C Sk C? T S C Sk C pv SCHS S ppy g 5 Sk p g y. W pv p, p pv k p. W pv p p Ng C C. W Ng C C? A Ng C C (NCC) y p v g kg. Ng C C v m Jy 2, 2019 g. Ng C C v m 4:00pm 10:00pm My g Sy m 3:00pm
More informationPR D NT N n TR T F R 6 pr l 8 Th Pr d nt Th h t H h n t n, D D r r. Pr d nt: n J n r f th r d t r v th tr t d rn z t n pr r f th n t d t t. n
R P RT F TH PR D NT N N TR T F R N V R T F NN T V D 0 0 : R PR P R JT..P.. D 2 PR L 8 8 J PR D NT N n TR T F R 6 pr l 8 Th Pr d nt Th h t H h n t n, D.. 20 00 D r r. Pr d nt: n J n r f th r d t r v th
More informationExhibit 2-9/30/15 Invoice Filing Page 1841 of Page 3660 Docket No
xhibit 2-9/3/15 Invie Filing Pge 1841 f Pge 366 Dket. 44498 F u v 7? u ' 1 L ffi s xs L. s 91 S'.e q ; t w W yn S. s t = p '1 F? 5! 4 ` p V -', {} f6 3 j v > ; gl. li -. " F LL tfi = g us J 3 y 4 @" V)
More informationULTRASONIC INVESTIGATION OF THE STIFFNESS OF GRAPHITE-
ULTRASONIC INVESTIGATION OF THE STIFFNESS OF GRAPHITE- GRAPHITE INTERFACES A. M. Robinson, B. W. Drinkwater Department of Mechanical Engineering, Queen's Building, University Walk, University of Bristol,
More informationChapter 12: Structures & Properties of Ceramics
Chapter 12: Structures & Properties of Ceramics ISSUES TO ADDRESS... Structures of ceramic materials: How do they differ from those of metals? Point defects: How are they different from those in metals?
More informationQuality Control Using Inferential Statistics In Weibull Based Reliability Analyses S. F. Duffy 1 and A. Parikh 2
Quality Control Using Inferential Statistics In Weibull Based Reliability Analyses S. F. Duffy 1 and A. Parikh 2 1 Cleveland State University 2 N & R Engineering www.inl.gov ASTM Symposium on Graphite
More informationA L A BA M A L A W R E V IE W
A L A BA M A L A W R E V IE W Volume 52 Fall 2000 Number 1 B E F O R E D I S A B I L I T Y C I V I L R I G HT S : C I V I L W A R P E N S I O N S A N D TH E P O L I T I C S O F D I S A B I L I T Y I N
More informationNovel Dispersion and Self-Assembly
Novel Dispersion and Self-Assembly of Carbon Nanotubes Mohammad F. Islam 100g Department of Chemical Engineering and Department of Materials Science & Engineering Funding Agencies http://islamgroup.cheme.cmu.edu
More informationChemistry Standard level Paper 1
Chemistry Standard level Paper 1 Thursday 12 May 2016 (morning) 45 minutes Instructions to candidates Do not open this examination paper until instructed to do so. Answer all the questions. For each question,
More informationME 4232: FLUID POWER CONTROLS LAB. Class #5 Valve Modeling
ME 4232: FLUID POWER CONTROLS LAB Class #5 Valve Modeling Notes No Office Hours Today Upcoming Labs: Lab 9: Flow Divider Lab 10: Sequencing Circuits 2 Agenda Wrap-up: Leakage Calculations Fluid Compressibility
More informationH NT Z N RT L 0 4 n f lt r h v d lt n r n, h p l," "Fl d nd fl d " ( n l d n l tr l t nt r t t n t nt t nt n fr n nl, th t l n r tr t nt. r d n f d rd n t th nd r nt r d t n th t th n r lth h v b n f
More informationCeramic Processing Research
Journal of Ceramic Processing Research. Vol. 6, No. 1, pp. 63~67 (200) J O U R N A L O Ceramic Processing Research Crystal structure extraction in materials using Euclidean Voronoi diagram and angular
More informationSynthesis and Characterization of Exfoliated Graphite (EG) and to Use it as a Reinforcement in Zn-based Metal Matrix Composites
Synthesis and Characterization of Exfoliated Graphite (EG) and to Use it as a Reinforcement in Zn-based Metal Matrix Composites Here H 2 SO 4 was used as an intercalant and H 2 O 2 as an oxidant. Expandable
More informationElectronic Supplementary Information. Direct synthesis of H 2 O 2 catalyzed by Pd nanoparticles encapsulated in multi-layered
Electronic Supplementary Information Direct synthesis of H 2 O 2 catalyzed by Pd nanoparticles encapsulated in multi-layered polyelectrolyte nanoreactors on a charged sphere Young-Min Chung,* a Yong-Tak
More informationSupporting Information
Copyright WILEY VCH Verlag GmbH & Co. KGaA, 69469 Weinheim, Germany, 2015. Supporting Information for Adv. Mater., DOI: 10.1002/adma.201503122 High Charge-Carrier Mobility of 2.5 cm 2 V 1 s 1 from a Water-Borne
More information4 8 N v btr 20, 20 th r l f ff nt f l t. r t pl n f r th n tr t n f h h v lr d b n r d t, rd n t h h th t b t f l rd n t f th rld ll b n tr t d n R th
n r t d n 20 2 :24 T P bl D n, l d t z d http:.h th tr t. r pd l 4 8 N v btr 20, 20 th r l f ff nt f l t. r t pl n f r th n tr t n f h h v lr d b n r d t, rd n t h h th t b t f l rd n t f th rld ll b n
More information+ +r lk+ + q +p np p rn+ Qp L + +p+ + P P +P+ P P+ P P R + R K. r+ + rk q pp lp+ + + pp+ p L + +N n + + +Q+P R P PP+ + P +K+R+L+
rien que des coups brillants (!!) 1 Christophe G + +r lk+ + q +p np p rn+ Qp L + +p+ + P P +P+ P + + + +P+ P P R + R K 1 Méphisto Polgar r+ + rk+ + + +q pp lp+ + + pp+ p L + +N n + + +Q+P R P PP+ + P +K+R+L+
More informationIonic Bonding. Example: Atomic Radius: Na (r = 0.192nm) Cl (r = 0.099nm) Ionic Radius : Na (r = 0.095nm) Cl (r = 0.181nm)
Ionic Bonding Ion: an atom or molecule that gains or loses electrons (acquires an electrical charge). Atoms form cations (+charge), when they lose electrons, or anions (- charge), when they gain electrons.
More informationChemistry Key Concepts - Atomic structure
Chemistry Key Concepts - Atomic structure What is an isotope? What is the atomic number? Why do atoms have no overall charge? How are atoms of different elements different? How does the size of an atom
More informationRational design of oxide/carbon composite to achieve superior rate-capability via enhanced lithium-ion transport across carbon to oxide
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2018 Electronic Supplementary Information Rational design of oxide/carbon composite
More informationPROGRESS TEST-5 RBS-1801 & 1802 JEE MAIN PATTERN
PRGRESS TEST-5 RBS-80 & 80 JEE MAI PATTER Test Date: 5-0-07 [ ] PT-V (Main) RBS-80-80_5.0.07 q. Potential at this point, V re E r 4 0 Work done = qv = 4E joules. (B). (A). As W F ds cos qe ds cos 4 0.E
More informationB 2, C 2, N 2. O 2, F 2, Ne 2. Energy order of the p 2p and s 2p orbitals changes across the period.
Chapter 11 Gases Energy order of the p p and s p orbitals changes across the period. Due to lower nuclear charge of B, C & N there is no s-p orbitals interaction Due to high nuclear charge of O, F& Ne
More informationChem Exam 1. September 26, Dr. Susan E. Bates. Name 9:00 OR 10:00
Chem 1711 Exam 1 September 26, 2013 Dr. Susan E. Bates Name 9:00 OR 10:00 N A = 6.022 x 10 23 mol 1 I A II A III B IV B V B VI B VII B VIII I B II B III A IV A V A VI A VII A inert gases 1 H 1.008 3 Li
More informationEffect of the ph and Basic Additives on the Precipitation of Calcium Carbonate during Carbonation Reaction
Resources Processing 54 : 14 18 (2007) Original Paper RESOURCES PROCESSING Effect of the ph and Basic Additives on the Precipitation of Calcium Carbonate during Carbonation Reaction Mi Young RYU 1, Kwang
More information9.9 L1N1F_JL 19bo. G)&) art9lej11 b&bo 51JY1511JEJ11141N0fM1NW15tIr1
thunyitmn tn1 zni f1117n.nllfmztri Lrs v wu 4 t t701 f 171/ ti 141 o&oiv,3 if 042 9.9 L1N1F_JL 19bo vitioluutul fly11.1.g)onoo b5 et Nn`15fiwnwiymri1 nrikl5fini1nvi Ltol : Aeniln,flvnu 6m,wiutrmntn15Y
More informationCP Chemistry Semester 1 Final Test Review 1. Know the symbol and the power of 10 for the following metric prefixes: A. Mega B.
Mass in grams 10 20 30 40 50 CP Chemistry Semester 1 Final Test Review 1. Know the symbol and the power of 10 for the following metric prefixes: A. Mega B. kilo D. deka E. deci G. milli H. micro C. hecto
More informationCHAPTER 3. Crystallography
CHAPTER 3 Crystallography Atomic Structure Atoms are made of Protons: mass 1.00728 amu, +1 positive charge Neutrons: mass of 1.00867 amu, neutral Electrons: mass of 0.00055 amu, -1 negative charge (1 amu
More informationSee, Sketch, Shoot. A Study Abroad program offered by Coastline Community College and ACCENT International Consortium for Academic Programs Abroad
R 17!! 0 2 5 2 l J 5 2 J S, Sk, S A S A ff Cl C Cll ACCENT Il C f A P A ROME Il Y I Wk 1 J 24 J 28 Av R, Il f -l. O ACCENT f lv R. L, PS. Il l l.* S v Nl M, Nl Gll f M A, Gll B, V, Cl R F. T v f l k Il
More informationSCWR Research in Korea. Yoon Y. Bae KAERI
SCWR Research in Korea Yoon Y. ae KAERI Organization President Dr. In-Soon Chnag Advanced Reactor Development Dr. Jong-Kyun Park Nuclear Engineering & Research Dr. M. H. Chang Mechanical Engineering &
More informationWork-Function Decrease of Graphene Sheet. Using Alkali Metal Carbonates
Supporting Information Work-Function Decrease of Graphene Sheet Using Alkali Metal Carbonates Ki Chang Kwon and Kyoung Soon Choi School of Chemical Engineering and Materials Science, Chung-Ang University
More informationAtomic structure & interatomic bonding. Chapter two
Atomic structure & interatomic bonding Chapter two 1 Atomic Structure Mass Charge Proton 1.67 х 10-27 kg + 1.60 х 10-19 C Neutron 1.67 х 10-27 kg Neutral Electron 9.11 х 10-31 kg - 1.60 х 10-19 C Electron
More informationlectures accompanying the book: Solid State Physics: An Introduction, by Philip ofmann (2nd edition 2015, ISBN-10: 3527412824, ISBN-13: 978-3527412822, Wiley-VC Berlin. www.philiphofmann.net 1 Bonds between
More informationPhysics of Materials: Bonding and Material Properties On The basis of Geometry and Bonding (Intermolecular forces) Dr.
: Bonding and Material Properties On The basis of Geometry and Bonding (Intermolecular forces) Dr. Anurag Srivastava Atal Bihari Vajpayee Indian Institute of Information Technology and Manegement, Gwalior
More informationSL Score. HL Score ! /30 ! /48. Practice Exam: Paper 1 Topic 4: Bonding. Name
Name Practice Exam: Paper 1 Topic 4: Bonding SL SL Score! /30 HL Score! /48 1. What is the correct Lewis structure for hypochlorous acid, a compound containing chlorine, hydrogen and oxygen? A. B. C. D.
More informationJohns Hopkins University What is Engineering? M. Karweit MATERIALS
Why do things break? Why are some materials stronger than others? Why is steel tough? Why is glass brittle? What is toughness? strength? brittleness? Elemental material atoms: MATERIALS A. Composition
More information2.1 Periodicity. Dobereiner Law of Triads:- If you look at the properties and relative atomic masses of 3 elements in group 1:-
2.1 Periodicity The development of the Periodic table: The Periodic Table brings order and a systematic way of looking at the elements. Prior to the periodic table, it was very difficult to find patterns
More informationM10/4/CHEMI/SPM/ENG/TZ1/XX+ CHEMISTRY. Wednesday 12 May 2010 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES
M10/4/EMI/SPM/ENG/TZ1/XX+ 22106110 EMISTRY standard level Paper 1 Wednesday 12 May 2010 (afternoon) 45 minutes INSTRUTIONS TO ANDIDATES Do not open this examination paper until instructed to do so. Answer
More informationn
p l p bl t n t t f Fl r d, D p rt nt f N t r l R r, D v n f nt r r R r, B r f l. n.24 80 T ll h, Fl. : Fl r d D p rt nt f N t r l R r, B r f l, 86. http://hdl.handle.net/2027/mdp.39015007497111 r t v n
More informationBonding Review Questions
Name: Date: 1. As an Na atom forms an Na 2+ ion, the number of protons in its nucleus 4. Atoms of which of the following elements have the strongest attraction for electrons? A. decreases B. increases
More informationEVALUATION OF INTEGRALS RELATED TO THE MAGNETIC FIELD INTEGRAL EQUATION OVER BILINEAR QUADRILATERALS
EVALUATION OF INTEGRALS RELATED TO THE MAGNETIC FIELD INTEGRAL EQUATION OVER BILINEAR QUADRILATERALS by John S. Asvestas 10 July 016 SUMMARY We present a new method for computing the impedance matrix elements
More informationCHAPTER 2. Atomic Structure And Bonding 2-1
CHAPTER 2 Atomic Structure And Bonding 2-1 Structure of Atoms ATOM Basic Unit of an Element Diameter : 10 10 m. Neutrally Charged Nucleus Diameter : 10 14 m Accounts for almost all mass Positive Charge
More informationFICH~:s lciithyo\l~~trio~es.
PB FCNyM UNLP T g vg wk b b y y g b y F wk v b m b v gz w my y m g E bv b g y v q y q q ó y P mv gz y b v m q m mó g FCH CTHYOTROES P W P -C b } k < HP- qe q< - - < - m T
More information,. *â â > V>V. â ND * 828.
BL D,. *â â > V>V Z V L. XX. J N R â J N, 828. LL BL D, D NB R H â ND T. D LL, TR ND, L ND N. * 828. n r t d n 20 2 2 0 : 0 T http: hdl.h ndl.n t 202 dp. 0 02802 68 Th N : l nd r.. N > R, L X. Fn r f,
More informationPurification of Fructooligosaccharides Using Simulated Moving Bed Chromatography
Korean Chem. Eng. Res., Vol. 43, No. 6, December, 2005, pp. 715-721 Simulated Moving Bed 크로마토그래피를이용한프럭토올리고당의정제 j mp * l p, *r l 402-701 p}e n 253 (2005 9o 30p r, 2005 11o 24p }ˆ) Purification of Fructooligosaccharides
More information1. Demonstrate that the minimum cation-to-anion radius ratio for a coordination number of 8 is
1. Demonstrate that the minimum cation-to-anion radius ratio for a coordination number of 8 is 0.732. This problem asks us to show that the minimum cation-to-anion radius ratio for a coordination number
More informationFuture Self-Guides. E,.?, :0-..-.,0 Q., 5...q ',D5', 4,] 1-}., d-'.4.., _. ZoltAn Dbrnyei Introduction. u u rt 5,4) ,-,4, a. a aci,, u 4.
te SelfGi ZltAn Dbnyei Intdtin ; ) Q) 4 t? ) t _ 4 73 y S _ E _ p p 4 t t 4) 1_ ::_ J 1 `i () L VI O I4 " " 1 D 4 L e Q) 1 k) QJ 7 j ZS _Le t 1 ej!2 i1 L 77 7 G (4) 4 6 t (1 ;7 bb F) t f; n (i M Q) 7S
More informationAS LEVEL CHEMISTRY BONDING AND STRUCTURE PERIODICITY
AS LEVEL CHEMISTRY BONDING AND STRUCTURE PERIODICITY Answer all questions Max 90 marks Name.. Mark../90...% Grade Paddington Academy 1 1. Draw a dot-and-cross diagram for CaCl 2. [Total 2 marks] 2. Magnesium
More information2-1 The Nature of Matter
2-1 The Nature of Matter Small Atoms Placed side by side, 100 million atoms would make a row only about 1 centimeter long. contain subatomic particles Atoms What three subatomic particles make up atoms?
More informationDepth Distribution of H-3, C-14 and Co-60 in Decommissioning of the Biological Shielding Concrete of KRR-2
Depth Distribution of H-3, C-14 and Co-60 in Decommissioning of the Biological Shielding Concrete of KRR-2 S.B. Hong, H.R. Kim, K.H. Chung, K.H. Chung, J.H. Park Korea Atomic Energy Research Institute
More informationTemperature programmed desorption (TPD) studies on nuclear carbon materials charged with hydrogen at elevated temperatures
Temperature programmed desorption (TPD) studies on nuclear carbon materials charged with hydrogen at elevated temperatures Zhengcao Li 1,, Mingyang Li 1,2, Zhen Hu 1, Hong Li 3, Jianzhu Cao 3 1 School
More informationChapter 10 Gases Characteristics of Gases Elements that exist as gases: Noble gases, O 2, N 2,H 2, F 2 and Cl 2. (For compounds see table 10.
Chapter 10 Gases 10.1 Characteristics of Gases Elements that exist as gases: Noble gases, O 2, N 2,H 2, F 2 and Cl 2. (For compounds see table 10.1) Unlike liquids and solids, gases expand to fill their
More informationIntroduction to Engineering Materials ENGR2000. Dr. Coates
Introduction to Engineering Materials ENGR2 Chapter 6: Mechanical Properties of Metals Dr. Coates 6.2 Concepts of Stress and Strain tension compression shear torsion Tension Tests The specimen is deformed
More information1 Which of the following has the highest melting temperature? C C 10 H 22. D SiO 2. (Total for Question = 1 mark)
1 Which of the following has the highest melting temperature? Hg K 10 H 22 SiO 2 2 Which of these has a dative covalent bond? NH 3 OH H 2 O H 3 O + 3 Which of the following compounds has the most polarized
More informationOmnidirectionally Stretchable and Transparent Graphene Electrodes
Supporting Information for: Omnidirectionally Stretchable and Transparent Graphene Electrodes Jin Yong Hong,, Wook Kim, Dukhyun Choi, Jing Kong,*, and Ho Seok Park*, School of Chemical Engineering, Sungkyunkwan
More informationNuclear forces and their impact on structure, reactions and astrophysics
Nuclear forces and their impact on structure, reactions and astrophysics Lectures for Week 2 Dick Furnstahl Ohio State University July, 213 M. Chiral EFT 1 (as); χ-symmetry in NN scattering, QCD 2 (rjf)
More informationOptimal Hydrogen Recycling Network Design of Petrochemical Complex
Korean Chem. Eng. Res., Vol. 45, o. 1, February, 2007, pp. 25-31 l s m k n Šk oy ÇmzsÇ Ç p n 151-742 ne k e 56-1 (2006 11o 16p r, 2006 12o 13p }ˆ) Optmal Hydrogen Recyclng etwork Desgn of Petrochemcal
More informationThe Seventeen Plane Groups (Two-dimensional Space Groups)
Korean J. Crystallography Vol. 16, o. 1, pp.11~20, 2005 The Seventeen Plane Groups (Two-dimensional Space Groups) ƒá Á a Á Ÿ a Á~ a Áªœ a Á ž a ano-œ ª, ªƒ ª œ œ a ˆ ª Ÿ ª ( campus) The Seventeen Plane
More informationf;g,7k ;! / C+!< 8R+^1 ;0$ Z\ \ K S;4 i!;g + 5 ;* \ C! 1+M, /A+1+> 0 /A+>! 8 J 4! 9,7 )F C!.4 ;* )F /0 u+\ 30< #4 8 J C!
393/09/0 393//07 :,F! ::!n> b]( a.q 5 O +D5 S ١ ; ;* :'!3Qi C+0;$ < "P 4 ; M V! M V! ; a 4 / ;0$ f;g,7k ;! / C+!< 8R+^ ;0$ Z\ \ K S;4 "* < 8c0 5 *
More informationPeriodicity SL (answers) IB CHEMISTRY SL
(answers) IB CHEMISTRY SL Syllabus objectives 3.1 Periodic table Understandings: The periodic table is arranged into four blocks associated with the four sublevels s, p, d, and f. The periodic table consists
More informationLecture 8 Symmetries, conserved quantities, and the labeling of states Angular Momentum
Lecture 8 Syetries, conserved quantities, and the labeling of states Angular Moentu Today s Progra: 1. Syetries and conserved quantities labeling of states. hrenfest Theore the greatest theore of all ties
More informationCLASS TEST GRADE 11. PHYSICAL SCIENCES: CHEMISTRY Test 4: Matter and materials 1
CLASS TEST GRADE PHYSICAL SCIENCES: CHEMISTRY Test 4: Matter and materials MARKS: 45 TIME: hour INSTRUCTIONS AND INFORMATION. Answer ALL the questions. 2. You may use non-programmable calculators. 3. You
More information22.06 ENGINEERING OF NUCLEAR SYSTEMS OPEN BOOK FINAL EXAM 3 HOURS
22.6 ENGINEERING OF NUCLEAR SYSTEMS OPEN BOOK FINAL EXAM 3 HOURS Short Questions (1% each) a) The specific power in a UO 2 pellet of a certain LWR is q"'=2 W/cm 3. The fuel 235 U enrichment is 4 % by weight.
More informationAtomic Structure & Interatomic Bonding
Atomic Structure & Interatomic Bonding Chapter Outline Review of Atomic Structure Atomic Bonding Atomic Structure Atoms are the smallest structural units of all solids, liquids & gases. Atom: The smallest
More informationLearning High-Dimensional Data with Artificial Neural Networks. Université catholique de Louvain (Belgium) Machine Learning Group
Lg Hgh-l h Al Nl Nk Ué hlq Lv (Blgm) h Lg Gp hp://..l..b/mlg/ Ol Hgh-l (H) L & l l l C ly, mpy p phm Spzg C El m l I N ml l m (l) vbl l pj ph: l, SV, Ol Hgh-l (H) L & l l l C ly, mpy p phm Spzg C El m
More informationForm 6 Chemistry Notes Section 1 1/7 Section 1 Atoms, Molecules and Stoichiometry
Section 1 1/7 Section 1 Atoms, Molecules and Stoichiometry 1.1 Atomic structure Pre-knowledge 1. Explain each of the following terms (a) element (b) atom (c) ion (d) relative atomic mass (e) mole (f) the
More informationEffect of Specimen Dimensions on Flexural Modulus in a 3-Point Bending Test
Effect of Specimen Dimensions on Flexural Modulus in a 3-Point Bending Test M. Praveen Kumar 1 and V. Balakrishna Murthy 2* 1 Mechanical Engineering Department, P.V.P. Siddhartha Institute of Technology,
More information