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Microsoft PowerPoint - ()1.ppt1. (IT) : Post PC, ,
2. (BT) : , ,
3. , (NT) : , ,
4. , (ET) : , ,
3
“
1
4
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♣ (metal) metallic elements and their alloys () (inorganic material, ceramic) compounds that contain metallic & non-metallic elements (polymer) C, H + O .....
♣ → (engineering material) , → (functional material) … : , , ,
(Metal)(Metal)
a. , .(, .)
b. . c. , . d. . e. . f. . g. , .
, .
< >
a. . b. . c. , . d. . e. . f. . g. , . f. .
[ ; Alloy]
(BCC)
W, α-Fe, δ-Fe, Nb,
Cu, Ag, Au, Al
(body-centered lattice: bcc) 3-4 8 1 .
.
3-4
1 (lattice constant, lattice parameter) (nearest neighbor) . (interatomic distance), 1 (coordination number) . 3-4(a) 8.
8 1/8 1 () 2. 1/8 × 8 + 1 = 2
(face-centered lattice : fcc) 3-6 1 . 1/8, 1/2 .
fcc ( ) 4. 1/8 × 8 + 3 = 4
3-7 4 12 .
.
2. (BT) : , ,
3. , (NT) : , ,
4. , (ET) : , ,
3
“
1
4
§
♣ (metal) metallic elements and their alloys () (inorganic material, ceramic) compounds that contain metallic & non-metallic elements (polymer) C, H + O .....
♣ → (engineering material) , → (functional material) … : , , ,
(Metal)(Metal)
a. , .(, .)
b. . c. , . d. . e. . f. . g. , .
, .
< >
a. . b. . c. , . d. . e. . f. . g. , . f. .
[ ; Alloy]
(BCC)
W, α-Fe, δ-Fe, Nb,
Cu, Ag, Au, Al
(body-centered lattice: bcc) 3-4 8 1 .
.
3-4
1 (lattice constant, lattice parameter) (nearest neighbor) . (interatomic distance), 1 (coordination number) . 3-4(a) 8.
8 1/8 1 () 2. 1/8 × 8 + 1 = 2
(face-centered lattice : fcc) 3-6 1 . 1/8, 1/2 .
fcc ( ) 4. 1/8 × 8 + 3 = 4
3-7 4 12 .
.
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