Ⅰ. INTRODUCTIONMgO was first used as a sintering additive in the fabrication of Si<sub>3</sub>N<sub>4</sub> ceramics. Another common sintering additive Al<sub>2</sub>O<sub>3&...Ⅰ. INTRODUCTIONMgO was first used as a sintering additive in the fabrication of Si<sub>3</sub>N<sub>4</sub> ceramics. Another common sintering additive Al<sub>2</sub>O<sub>3</sub> combined with AIN can be accommodated in β-Si<sub>3</sub>N<sub>4</sub> structure to form β-sialon. A thorough understanding of the effect of those combined additives depends on the knowledge of the phase relationships in the system Mg-Si-Al-O-N.展开更多
文摘Ⅰ. INTRODUCTIONMgO was first used as a sintering additive in the fabrication of Si<sub>3</sub>N<sub>4</sub> ceramics. Another common sintering additive Al<sub>2</sub>O<sub>3</sub> combined with AIN can be accommodated in β-Si<sub>3</sub>N<sub>4</sub> structure to form β-sialon. A thorough understanding of the effect of those combined additives depends on the knowledge of the phase relationships in the system Mg-Si-Al-O-N.
