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利用ＴＥＭ和电子衍射图谱分析，研究了新型陶瓷刀具材料ＪＸ－２－Ｉ的界面微观结构。ＴＥＭ分析表明，ＪＸ－２－Ｉ刀具材料的界面结合状态较好，Ａｌ＿２Ｏ＿３／ＳｉＣｗ界面上形成了具有较高强度的“钢筋混凝土”结构，在Ａｌ＿２Ｏ＿３／ＳｉＣｗ和Ａｌ＿２Ｏ＿３／ＳｉＣｐ界面上没有剧烈的化学反应发生；通过ＴＥＭ和电子衍射图分析，发现在Ａｌ＿２Ｏ＿３的晶粒边界上有尖晶石（ＭｇＡｌ＿２Ｏ＿４）生成，这有利于控制Ａｌ＿２Ｏ＿３晶粒的长大，提高复合材料的强度。
The interfacial microstructure of new ceramic tool material JX-2-I was studied by TEM and electron diffraction. The TEM analysis shows that the bonding interface of JX-2-I tool material is better, and the “reinforced concrete” structure with higher strength is formed on the interface of Al_2O_3 / SiCw, and there is no violent chemistry on the interface of Al_2O_3 / SiCw and Al_2O_3 / SiCp The reaction took place. It was found by TEM and electron diffraction analysis that spinel (MgAl_2O_4) was formed on the grain boundary of Al_2O_3, which is beneficial to control the growth of Al_2O_3 grains and improve the strength of the composites.