Zinc oxide (ZnO) ceramics are used in a variety of applications, such as surge protection devices. The

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Zinc oxide (ZnO) ceramics are used in a variety of applications, such as surge protection devices. The diffusion of oxygen in single crystals of ZnO was studied by Tomlins and co-workers. These data are shown in the table here.

Using these data, calculate the activation energy for the diffusion of oxygen in ZnO. What is the value of D0 in cm2/s?

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Essentials of Materials Science and Engineering

ISBN: 978-1111576851

3rd edition

Authors: Donald R. Askeland, Wendelin J. Wright

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Question Posted: Apr 26, 2016 07:15 AM

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Zinc oxide (ZnO) ceramics are used in a variety of applications, such as surge protection devices. The

Question:

Diffusion Coefficient D (cm's) Temperature T ("C) 850 925 995 1000 1040 1095 1100 1150 1175 1200 2.73 x 10 8.20 × 10-17 2.62 x 1015 2.21 x 10-15 5.48 x 10-15 4.20 x 1015 6.16 x 105s 1.31 x 104 1.97 x 104 3.50 x 1014

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The data for lnD vs 1T are shown below The slope of a straigh...View the full answer

Essentials of Materials Science and Engineering

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