研究了以Y，Sm以及复合稀土Y+Sm分别作为α-Sialon的形成离子，组份为90wt%α-Sialon(m=1,n=1.7)+10wt%12H的样品在1450～1800°C热压条件下的致密化和反应过程.结果表明，添加Y2O3+Sm2O3复合稀土对致密化最有利，不同的稀土元素对反应过程有较大的影响，即在Sm-组份中α-Si3N4很快消失，α-Sialon与AlN-多型体同时形成而Y-组份中α-Si3N4消失较慢，α-Sialon的形成受到AlN-多型体的抑制.
The densification and reaction sequence of 90wt%R-α′+10wt%12H (R=Y, Sm, Y+Sm) dual-phase ceramics hot-pressed in the temperature range of 1450～1800C were studied. The results show that the dual elements Y+Sm promote densification more effectively than Y-and Sm-element. In Sm-composition, Si3N4 disappears quickly and α-Sialon appears simultaneously with 12H-AlN-polytypoides. In Y-composition, however, Si3N4 dissolves slowly and 12H-AlN-polytypoid inhibits the formation of α-Sialon.
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