Introduction to Materials Module 2 Nature Structure of Materials PDF文件使用"pdfFactory Pro”试用版本创建www,fineprint.com.cn
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2.2 Crystalline structure PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint..com,cn
2.2 Crystalline structure a b c x y z a b g PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn
(001) (100) (001) 110 111 211 312 PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint.com.cn
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1.Crystalline Structure FACE-CENTERED CUBIC面心立方 Elements in FCC crystal structure include Al, Ca,Ni,Pd,Pt,Cu,Au,Pb and Fe (y-Fe, at high temperature) a a PDF文件使用"pdfFactory Pro”试用版本创建蔬m.fineprint.com.cn
1. Crystalline Structure FACE-CENTERED CUBIC 面心立方 a a a Elements in FCC crystal structure include Al, Ca,Ni,Pd,Pt,Cu,Au,Pb and Fe (g-Fe, at high temperature) PDF 文件使用 "pdfFactory Pro" 试用版本创建 菾¬ www.fineprint.com.cn
FACE-CENTERED CUBIC The relation between cube edge length a and the atomic radius R. v2a 4R a=2R√2 2a 原子堆砌密度 Atomic packing factor,APF Volume of atoms= x4 4 APF= 4413元R)=0.74 (4R/√2)3 PDF文件使用"pdfFactory Pro”试用版本创建www,fineprint.com.cn
FACE-CENTERED CUBIC 原子堆砌密度 Atomic packing factor, APF 0.74 (4 / 2) 4(4/3 ) APF 3 3 = = R pR 4 3 4 3 Volume of atoms= pR ´ a 2a 2a = 4R a = 2R 2 The relation between cube edge length a and the atomic radius R: PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn
BODY-CENTERED CUBIC 体心立方 Under conventional conditions,elements in BCC crystal structure include Li,Na,K,and transition metals such as V,Cr,Nb,Mo,Ta,W and Fe (a-Fe),etc. a PDF文件使用"pdfFactory Pro”试用版本创建E.fineprint..com,cn
BODY-CENTERED CUBIC 体心立方 a a a Under conventional conditions, elements in BCC crystal structure include Li,Na,K, and transition metals such as V,Cr,Nb,Mo,Ta,W and Fe (a-Fe), etc. PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿÿwww.fineprint.com.cn f
BODY-CENTERED CUBIC The relation between cube edge length a and the atomic V3a radius R. 4R 3a =4R a=3 Q 原子堆砌密度 Atomic packing factor,APF APF= (4/3πR3) 2a =0.68 (4R/3)3 PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint.com.cn
3a 3a = 4R 2a a BODY-CENTERED CUBIC 原子堆砌密度 Atomic packing factor, APF 3 4R a = 0.68 (4 / 3) 2(4/3 ) APF 3 3 = = R pR The relation between cube edge length a and the atomic radius R: PDF 文件使用 "pdfFactory Pro" 试用版本创建 ÿwww.fineprint.com.cn
Hexagonal Close-packed Crystal Structure (HCP) 六方密堆积结构 密排六方 PDF文件使用"pdfFactory Pro”试用版本创建f.fineprint.com.cn
Hexagonal Close-packed Crystal Structure (HCP) a c 密排六方 六方密堆积结构 PDF 文件使用 "pdfFactory Pro" 试用版本创建 饦ÿ www.fineprint.com.cn
Hexagonal Close-packed Crystal Structure (HCP) PDF文件使用"pdfFactory Pro'”试用版本创建wm,fineprint.com,cn
A B A Hexagonal Close-packed Crystal Structure (HCP) PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn
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