采用固相烧结法制备了Nd2O3掺杂Ta2O5 - Y2O3 - ZrO2体系热障涂层陶瓷材料.分别利用X-射线衍射仪、扫面电子显微镜和热膨胀仪对陶瓷材料的物相组成、显微结构以及热膨胀性进行了分析.结果表明、Nd2O3 - Y2O3 - Ta2O5 - ZrO2陶瓷材料以四方相为主晶相,随着Nd2O3掺入量的增加,出现单斜相和少量其它杂相,且陶瓷材料的体积密度增大,热膨胀系数减小,晶粒也有所减小,表明稀土氧化物Nd2O3具有抑制晶粒长大和抗烧结的作用.
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