Question

Problem I (irom 2015 mlaterm exam) What type(s) of bonding would be expected for each of the following materials: brass (a copper-zinc alloy), rubber, barium sulfide (Bas), nylon, and aluminum phosphide (AIP)? Problem 2 Within a cubic unit cell, sketch the following directions: (a) [101] (b) [ītī] (c) [211] (d) [212] Problem 3 Sketch within a cubic unit cell the following planes: (a) (107) (b) (717) (C) (271) (d) (212) Problem 4 Determine the Miller indices for the planes shown in the following unit cell:

Answer 1

Brass - Alloy of Cu - Zn Red Brass zine % Less than 30% in Brous ar Ecc zine / greater Thon 35% in Bray are mixture of Fcc & Bea Rubber Carbon Carbon double Bond Barium sulfide Bazt & s2-0 form Bas - Ionic Bond phosphite Triple Bond Aluminum

Problem PE [21] [212]

Pr 3. Croi) indias (1001) intrapb 1 0 - 1 Reciprocal. ① (TIT) Indias + + (-1 1-1) inele suyu Y ZL © (2 i 1) indeas 2 - ↑ (1 - interupt & ( 3 , 2) indias ( v) (-12 1 1/2) interapt 12

РФ - 2 interceshon co h o (oo 2 0 Indias intersecha intersecha (2012 Indias Indias (2 ao 1) a) Bond b/w Brous Then 20%. Then FCC zinc %. Len BCC & FCC Band grate Then 35% 2in cy