Explanation The activation energy for diffusion of carbon in FCC iron is more than the carbon in BCC iron and this can be predicted without referring to the actual data, because the packing factor of FCC is 0.74 and the packing factor for BCC is 0

Essentials Of Materials Science And Engineering

4th Edition

ISBN: 9781337385497

Author: WRIGHT, Wendelin J.

Publisher: Cengage,

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Question

Chapter 5, Problem 5.25P

Interpretation Introduction

Interpretation:

Whether the activation energy for diffusion of carbon in FCC iron is higher or lower than the BCC iron needs to be determined.

Concept introduction:

The activation energy is defined as the minimum amount of energy required to start any reaction.

The activation energy required for diffusion of carbon in any crystal lattice will depend on its packing efficiency. The more the packing efficiency, more will be the activation energy. The packing factor of FCC is 74% and the packing factor for BCC is 68%.

Expert Solution & Answer

Chapter 5 Solutions

Essentials Of Materials Science And Engineering

Ch. 5 - Prob. 5.1P Ch. 5 - Prob. 5.2P Ch. 5 - Prob. 5.3P Ch. 5 - Prob. 5.4P Ch. 5 - Prob. 5.5P Ch. 5 - Prob. 5.6P Ch. 5 - Prob. 5.7P Ch. 5 - Prob. 5.8P Ch. 5 - Prob. 5.9P Ch. 5 - Prob. 5.10P

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