著者

広崎 尚登 井上 靖秀 秋宗 淑雄

出版者

公益社団法人日本セラミックス協会

雑誌

Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) (ISSN:09145400)

巻号頁・発行日

vol.100, no.1161, pp.720-724, 1992

被引用文献数

3 4

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The grain boundary phase in gas-pressure sintered silicon nitride containing 1mol% (SN1) and 10mol% (SN10) of equi-molar Y₂O₃-Nd₂O₃ was investigated using a transmission electron microscopy. In SN1, grain boundary phases were observed in two-grain boundaries and multi-grain boundaries. In SN10, pockets of an additive-rich glassy phase were observed beside two-grain boundaries and multi-grain boundaries, showing that too much additive caused glassy pockets. SN1 contained silica-rich phase in the multi-grain boundary, although SN10 contained additive-rich phase. Silica-rich phase with a lower melting temperature contributed to increased sinterability of SN1.