以3Ti/Al/2C/0.1Sn粉体为原料,进行机械合金化,并对粉体产物进行热处理,制备高含量Ti3AlC2材料,并分析了产物的微观形貌.机械合金化3Ti/Al/2C粉体,可合成TiC、Ti3AlC2和Ti2AlC混合粉体产物.添加适量Sn可消除产物中的Ti2AlC,明显促进Ti3AlC2合成.对粉体产物进行热处理,可以提高产物Ti3AlC2含量.热处理温度过低或过高都不利于Ti3AlC2含量的提高.随着热处理温度的提高,晶粒长大明显,烧结倾向加剧,研磨困难.在900 ℃可以获得质量分数为95.2%的Ti3AlC2.热处理产物颗粒比较细小,可做复合材料的原料.
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