t1sum03

# t1sum03 - Home Introduction Policies Resources Requirements...

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Home Introduction Policies Resources Requirements & Grading Syllabus Assignments Handouts Discussion Web Links Distance Learners Contact MSE 200 Test 1 λ =2d sin ( θ ), d=a/(h2+k2+l2) 1/2, Nv/NL=exp(-Gv/kT), D=Doexp(-Q/kT), x=(2Dt)1/2

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Q1. Determine the Miller indices of the atomic plane and the atomic direction (AB) shown in below. Is the direction contained in the plane. Answer the following questions. 1. The origin should be chosen at a. left bottom back corner b. right bottom back corner c. left front bottom corner (b ) 2. The intercepts that the plane makes with the axis in unit cell dimensions are a. 1/2, 0, 1/2 b. 1/2,-1/2, 1/2 c. 1/2 ,-1,1/2 (c ) 3. Reciprocals of the intercepts are a. 2, infinity, 2 b. 2,-2,2 c. 2,-1,2 (c ) 4. Miller indices with a bar replaced by a negative sign in front are a. (202) b. (1-11) c. (2-12) (c ) 5. Choose the same origin as in question 1. Miller indices of the direction are a. [-101] b. [10-1] c. [01-1] (b ) 6. Using the above solutions, is the direction contained in the plane. a. yes b. no (a ) Q2. Identify the crystallographic plane with Miller indices (211) and the direction [-111].
1. Choose the correct plane with Miller indices (211)from the below. (a ) 2. Draw the direction [-111] in the below figure. (c ) Q3. Aluminum has a lattice parameter of 0.406 nm. The atomic weight of aluminum is 26.98 Answer the following questions. 1. If aluminum has a crystal structure of fcc, the number of atoms per unit cell are a. 2 b. 3 c. 4 (c ) 2. The shortest distance between atoms in the aluminum lattice is a. 0.14 b. 0.29 c. 0.35 ( b) 3. Mass of each aluminum atom in gms is a. 4.48x10-23 b. 4.48 c. 162x10-23 (a) 4. Density of aluminum in gms/cm3 is ( a) a. 2.67 b. 5.8 c. 2.67x10-3

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Q4. In the interatomic force vs interatomic distance of two solids shown below identify the following. 1. The graph that belongs to strong solid and weak solid. 2. The equilibrium distance of separation between atoms in each solid. 3. The modulus of each solid 4. The strength of each solid. Q5. X-ray diffraction of iron powder was taken using Cu Ka radiation with wave length l=0.
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## This note was uploaded on 10/11/2009 for the course MSE 200 taught by Professor Wholedepartment during the Spring '08 term at N.C. State.

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t1sum03 - Home Introduction Policies Resources Requirements...

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