AIN-多型体对形成长颗粒α-Sialon的影响

Effect of AIN-polytypoid on Elongated α-Sialon Formation

通过ＳＥＭ、ＥＤＳ等方法，研究了添加不同含量ＡＩＮ－多型体对（Ｙ＋Ｓm）－α－Ｓｉａｌｏｎ晶粒形貌的影响．结果表明，随ＡＩＮ－多型体添加量增多，材料中长颗粒α－Ｓｉａｌｏｎ的数量增加．本文对ａ’－ＡＩＮ－多型体两相区内长颗粒α－Ｓｉａｌｏｎ的形成机理进行了讨论．

The microstructural characteristic of (Y+Sm) α-Sialon with different amount of AINpolytypoid was studied by SEM and EDS. The formation mechanism of elongated α-Sialon inα'-AIN-polytypoids dual-phases area was discussed. The results show that with increasing amountof AIN-polytypoid, more α-Sialon grains exhibit the enlongated morphology.