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172091_76_IMSE092419.pdf IntroductiontoMaterialsScienceandEngineering
Eun Soo Park
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2019Fall
09.24.2019
CHAPTER 3:
Fundamentals of Crystallography
ļ
Contents for previous class
CHAPTER 4:
The Structure of Crystalline Solids
I. Atomic arrangement in the solid state
ė ė ȢContents for previous class
Non-crystalline Materials
Amorphous materials
a wide diversity of materials can be rendered amorphous indeed almost all materials can. - metal, ceramic, polymer ex) amorphous metallic alloy (1960) - glassy/non-crystalline material cf * O D V VQUASICRYSTALS
Similar to crystals, BUT...
II. Metallic crystal system
Contents for today's class
' D W D I U R P 7 D E O HCallister 7e
Deformation
and Fracture Mechanics ofEngineering Materials
Callister 7e
Single vs Polycrystals
Materials Science and
Engineering
Contents for today's class
CHAPTER 4:
The Structure of Crystalline Solids
Materials-Bonding Classification
낺뗲 Ꞥ딖 떂ꚢꁪ 駲 쐏딖 鯎 땊꺗딮 骆쌿뎦 쐒쌿
⁞㏣゚⁞㏣ 㤦㏢Ṛ 䢪䞿ⶒ ῂ㤊 ộCallister 7e.The Nature of the Chemical
BondIonic Bonding
1 D & O 0 J 2 & D ) & V & OCovalent Bonding
• molecules with nonmetals • molecules with metals andnonmetals • elemental solids (RHS of Periodic Table) • compound solids (about column IVA) He -Ne - Ar - Kr -Xe -Rn - F 4.0 Cl3.0Br
2.8 I 2.5 At 2.2 Li 1.0 Na 0.9 K 0.8 Rb0.8Cs
0.7 Fr 0.7 H 2.1 Be1.5Mg
1.2Ca
1.0 Sr 1.0 Ba0.9Ra
0.9 Ti 1.5 Cr 1.6 Fe 1.8 Ni 1.8 Zn 1.8 As 2.0SiCC(diamond)
H2O C 2.5 H2 Cl2 F2 Si 1.8 Ga 1.6 GaAs Ge 1.8 O 2.0 column IVA Sn1.8Pb
1.8 ex: MgOMg1 s 2 2 s 2 2 p 6 3 s 2 O1 s 2 2 s 2 2 p 4 s s p s s p 㛅㢨㝜 㢀㢨㝜Dissimilar electronegativities
[Ne] 3 s 2Open space in FCC 1
Open space in FCC 1
Open space in FCC 2
Callister & Rethwisch 9e.
V W D E O H V W D E O H 0 D L Q W H Q D Q F H R I & K D U J H 1 H X W U D O L W \ & D ) & D F D W L R Q ) ) D Q L R Q V $ P ; S P S Y D O X H V W R D F K L H Y H F K D U J H Q H X W U D O L W \Chapter4.6
$ G D S W H G I U R P 7 D E O HCallister & Rethwisch 9e.
r r & R R U G 1 X P E H U O L Q H D U W U L D Q J X O D U W H W U D K H G U D O R F W D K H G U D O F X E L F $ G D S W H G I U R P ) L JCallister & Rethwisch 9e.
Callister & Rethwisch 9e.
Callister & Rethwisch 9e.
rr 7 R I R U P D V W D E O H V W U X F W X U H K R Z P D Q \ D Q L R Q V F D Q V X U U R X Q G D U R X Q G D F D W L R Q "Chapter4.6
r /r ar r r r r r r r r D Q L R Q F D W L R Q rr D Q L R Q F D W L R Q ... rrCallister & Rethwisch 9e.
Ceramic Structure
Chapter4.7,4.8,4.9
r r r $ G D S W H G I U R P ) L JCallister & Rethwisch 9e.
rShow why NaCl is FCC
=Atom BAtom A
2 r r r rCallister & Rethwisch 9e.
) L J Callister & Rethwisch 9e.Callister & Rethwisch 9e.
Callister &
Rethwisch 9e.
1 X P E H U R I I R U P X O D X Q L W V X Q L W F H O O 9 R O X P H R I X Q L W F H O O $ Y R J D G U R䇻 V X P R I D W R P L F Z H L J K W V R I D O O F D W L R Q V L Q I R U P X O D X Q L WChapter4.10
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