Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan
Annual Meeting of The Ceramic Society of Japan, 2011
Session ID : 3K11
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Host: The Ceramic Society of Japan

Evaluation of fracture behavior in translucent polycrystalline ceramics
*Sawao Honda, Yuuki Ogihara, Aung Yan Lin, Akio Ikesue, Yuji Iwamoto
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Keywords: Fracture strength, Translucent ceramics, Polycrystalline ceramics, Fracture toughness
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Abstract
Microstructure and mechanical properties of translucent polycrystalline spinel ceramics for the optical materials have been investigated. The highest bending strength of polycrystalline spinel ceramics, which was fabricated by various sintering conditions, was higher than that of sapphire for the optical ceramics in wide use. Fracture toughness measured by the SEVNB method and fracture strength of polycrystalline spinel tended to be increased with decreasing of average grain diameter.
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© The Ceramic Society of Japan 2011
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