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11-03-2020
Engineering

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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?

Respuesta :

12-03-2020

Answer:

Surface energy decreases.

Explanation:

The surface energy of a single crystal depends on the planar density of the exposed surface plane due to the number of unsatisfied bonds. With an increase in planar density, the number of satisfied atomic bonds in the plane increase, and the number of unsatisfied bonds decreases. As a result, the surface energy decreases.

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