Páginas: 2 (347 palabras) Publicado: 25 de enero de 2010
3/25 Calculate the atomic radius in cm for the following: (a) BCC metal with
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Sketch the following planes and directions within a cubic unit cell.
Solution: (a) 1010–10 12–2 301 –201 [2–13]
(g) (0–1–1) (h) (102) (i) (002) (j) (1–30) (k) (–212) (l) (3–1–2)
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Sketch the following planes and directions within a cubic unit cell.
Solution: (a) 1–10–2–21 410 0–12 3–2–1 [1–11]
(g) (11–1) (h) (01–1) (i) (030) (j) (1–21) (k) (11–3) (l) (0–41)
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Sketch the following planes and directions within a hexagonal unit cell.Solution: (a) 01–10 11–20 –1011 (0003) (e) (–1010) (f) (01–11)
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Sketch the following planes and directions within a hexagonal unit cell.
Solution: (a) –2110 11–21 10–10 (1–210) (e)(–1–122) (f) (12–30)
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3/63 What are the indices of the six directions of the form that lie in the (11–1)
plane of a cubic cell?
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3/64 What are the indices of the fourdirections of the form that lie in the (1–01)
plane of a cubic cell?
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3/68 Determine the repeat distance, linear density, andpacking fraction for FCC nickel,which has a lattice parameter of 0.35167 nm, in the [100], [110], and [111] directions.Which of these directions is close-packed?
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3/101 The density of cristobalite is about 1.538 g/cm3, and it has a lattice parameter of
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