Gas Pressure Sintering of β-Si3N4 SHS

Journal of Inorganic Materials

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Gas Pressure Sintering of β-Si₃N₄ SHS

LUO Xinyu; LI Wenlan; ZHANG Baolin; WU Fengying; XU Suying; ZHUANG Hanrui

Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China

Received:1995-11-01 Revised:1996-01-25 Published:1997-02-20 Online:1997-02-20

Abstract

Abstract: β-Si₃N₄ inaterial prepared by self-propagating high-teinperature synthesis from silcon powder and nitrogen was studied by gas pressure sintering process. The effects of different ainounts of YAG additive and holding time on the properties were investigated. The results show that this β-Si₃N₄ powder can be sintered to>99% of the theoretical density with high fracture toughness under the sintering conditions of 1.2MPa Ar pressure 1940℃ and ho1ding 1 hour.

Key words: self-propagating high-temperature synthesis, gas pressure sintering, β-Si₃N₄ nitride, fracture toughness

LUO Xinyu,LI Wenlan,ZHANG Baolin,WU Fengying,XU Suying,ZHUANG Hanrui. Gas Pressure Sintering of β-Si₃N₄ SHS[J]. Journal of Inorganic Materials.

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Gas Pressure Sintering of β-Si₃N₄ SHS

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