Materials Science and Engineering: An Introduction

Published by Wiley
ISBN 10: 1118324579
ISBN 13: 978-1-11832-457-8

Chapter 4 - Imperfections in Solids - Questions and Problems - Page 137: 4.42a

Answer

The surface energy will be greater than the grain boundary energy. For grain boundaries, some atoms on one side of a boundary will bond to the atoms on the other side, which is not the case for surface atoms.

Work Step by Step

The surface energy will be greater than the grain boundary energy. For grain boundaries, some atoms on one side of a boundary will bond to the atoms on the other side, which is not the case for surface atoms.
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