Nitrogen-rich Liquid Phase Regions in Sin(Nd)-Si-Al-O-N systems

Abstract

Abstract: Liquid phase regions of 1700℃ with nitrogen concentration higher than 40eq% in the systemsof Sm and Nd-Si-Al-O-N were determined. Both systems possess extensive liquid phase regionsat 40eq% N. With incrcasing nitrogen content, the liquid phasc regions contract towards Si-richcompositions. The maximum solubility of nitrogen in the Sm(Nd)-sialon liquids is slightly above30eq%, wihch is much higher than that in Y-sialon liquid, of which the highest nitrogen concentration of slightly above 30eq% was determined.

Key words: Si₃N₄, Sialon, rare earth elements, liquid phase region

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SUN Weiying,CHEN Jianxin,JIA Yingkin. Nitrogen-rich Liquid Phase Regions in Sin(Nd)-Si-Al-O-N systems[J]. Journal of Inorganic Materials.

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