2101 HW I - MSE 2101: MATERIALS SCIENCE AND ENGINEERING...

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MSE 2101: MATERIALS SCIENCE AND ENGINEERING Homework Assignment I Read 2.5, p.24 to to 2.8, p.32. Read all of chapter 3, EXCEPT: p. 43 skip hexagonal crystal structure, p. 47 look only at cubic and tetragonal. Questions and Problems 2.14 (a) and (b) as they appear below; (c) Plot force F vs. r and determine the bonding energy, Eo. (d) Calculate dF/dr for r =roo We will see later that dF/dr is related to the elastic modulus of the material. 2.14,2.19,2.20,2.21 (answer 2) 3.8,3.9, 3.10, 3.11, 3.14 (answer 2) 3.31,3.36, 3.38,3.46, 3.48 (answer 2) 2.14 For a Na + -Cl- ion pai~) attractive and re~ pulsive energies EA and ER, respectively, depend on· the distance between the ions r, according to EA = _ 1.436 r For these expressions, energies are expressed in electron volts per Na + -Cl- pair, and r is the distance in nanometers. The net energy EN is just the sum of the two expressions above. (a) Superimpose on a single plot EN, ER, and EA versus r up to 1.0 nm. (b)
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2101 HW I - MSE 2101: MATERIALS SCIENCE AND ENGINEERING...

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