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ME213 Homework set2 ME213 Properties of Materials Problem 1 (a) The surface energy of a single crystal depends on crystallographic orientation. Does this surface energy increase or decrease with an increase in planar density? Why? (b) For an FCC single crystal, would you expect the surface energy for a (100) plane to be greater or less than that for a (111) plane?

          ME213 Homework set2
ME213 Properties of Materials
Problem 1
(a) The surface energy of a single crystal depends on
crystallographic orientation. Does this surface
energy increase or decrease with an increase in planar
density? Why?
(b) For an FCC single crystal, would you expect the
surface energy for a (100) plane to be greater or less
than that for a (111) plane?

ME213 Homework set2
ME213 Properties of Materials
Problem 1
(a) The surface energy of a single crystal depends on
crystallographic orientation. Does this surface
energy increase or decrease with an increase in planar
density? Why?
(b) For an FCC single crystal, would you expect the
surface energy for a (100) plane to be greater or less
than that for a (111) plane?

Added by Purificaci-N R.

Materials Science and Engineering: An Introduction

William D. Callister, Jr. David G.… 7th Edition

Chapter 4

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Solved by Expert Gopal Sharma

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This is because a higher planar density means that there are more atoms on the surface, leading to a higher surface energy. The surface energy is essentially the energy required to break the bonds between atoms on the surface and expose new surfaces. b) For an Show more…

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T3 Properties of Materials ME213 Homework Set 2 Problem 1 a) The surface energy of a single crystal depends on crystallographic orientation. Does this surface energy increase or decrease with an increase in planar density? Why? b) For an FCC single crystal, would you expect the surface energy for a (100) plane to be greater or less than that for a (111) plane?