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Comparison of Mechanical and Dielectric Strength Distributions for Variously Surface-Finished Titanium Dioxide Ceramics

Authors

  • Akira Kishimoto,

    1. Department of Industrial Chemisrty, Faculty of Engineering, University of Tokyo, 7–3–1 Hongo, Bunkyo-ku, Tokyo 113, Japan
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  • Kunihito Koumoto,

    1. Department of Industrial Chemisrty, Faculty of Engineering, University of Tokyo, 7–3–1 Hongo, Bunkyo-ku, Tokyo 113, Japan
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    • Member, American Ceramic Society.

  • Hiroaki Yanagida

    1. Department of Industrial Chemisrty, Faculty of Engineering, University of Tokyo, 7–3–1 Hongo, Bunkyo-ku, Tokyo 113, Japan
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    • Member, American Ceramic Society.

    • *

      Research Center for Advanced Science and Technology, University of Tokyo.


Abstract

Mechanical and dielectric strength distributions were studied for variously surface-finished TiO2 ceramics. Roughly finished specimens showed a small Weibull modulus for both kinds of failures, and clear analogies between mechanical and dielectric strength distributions were found in both rough-and fine-surface specimens. The validity of the dielectric strength measuring method as an alternative method to evaluate the structural reliability of brittle ceramics is discussed.

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