Effect of Crystallizing the Grain-Boundary Glass Phase on the High-Temperature Strength of Hot-Pressed Si3N4 Containing Y2O3 |
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| Authors: | AKIHIKO TSUGE K NISHIDA M KOMATSU |
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| Affiliation: | Metals and Ceramics Laboratory, Toshiba Research and Development Center, Tokyo Shibaura Electric Company, Ltd., Kawasaki, Japan;Metal Products Development Department, Metal Products Division, Tokyo Shibaura Electric Company, Ltd., Yokohama, Japan |
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| Abstract: | The effects of fabrication variables on the high-temperature strength of hot-pressed Si3N4 containing 5 wt% Y2O3 were studied. Materials containing a crystalline grain-boundary phase, formed as a consequence of a high-temperature presintering heat treatment and identified as Si3N4·Y2O3, had high-temperature strengths significantly superior to those observed for materials containing a glass phase. |
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