【摘要】 本文对ｓｉ＿３Ｎ＿４－ＭｇＡｌ＿２Ｏ＿４－Ａｌ＿２Ｏ＿３系复合材料的无压烧结进行了研究。讨论了Ａ１＿２Ｏ＿３含量对材料性能的影响及烧结工艺对材料性能和显微结构的相互关系。实验表明：两段法烧结可以得到性能良好的Ｓｉ＿３Ｎ＿４－ＭｇＡｌ＿２Ｏ＿４－Ａｌ＿２Ｏ＿３复合材料更多还原

【Abstract】 This article studies the pressureless sintered Si₃N₄-MgAl₂O₄-Al₂O₃Composite,discussing the effect of the content of Al₂O₃ on the properties of the materialsand the relationship of the sintering process with the properties and microstructures of thespecimens. Experiments show that the two-step sintering process has resulted in the Si₃N₄-MgAl₂O₄-Al₂O₃ Composite with good propterties.更多还原