以Ti、Al和TiN粉按化学计量比配料,在原位热压(HP)烧结工艺条件下合成高纯致密Ti2AlN陶瓷材料.通过X射线衍射(XRD)分析烧结产物的相形成过程,用扫描电镜(SEM)和电子探针(EPMA)结合能谱仪(EDS)研究材料的显微结构特征.原位热压工艺合成Ti2AlN的最佳温度为1300℃,烧结试样的密度为4.22g/cm3,达到理论密度的97.9％,晶体发育完全,结构紧密,具有明显的层状结构.用高温显微镜研究了单相Ti2AlN的高温行为,1300～1500℃是坯体的烧结过程,1500～1580℃是Ti2AlN材料的软化温度,熔融温度高于1700℃.
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