采用燃烧还原合成技术,以还原体系(B2O3+ZrO2+Al)为反应体系制备了ZrB2/Al2O3复合粉体.利用X射线衍射(XRD)、X射线光电子能谱(XPS)和透射电镜(TEM、HRTEM)对复合粉体的物相组成、化学组成及界面结构进行了表征分析.结果表明,复合粉体中存在Zr、B、Al和O元素且它们分别以ZrB2和Al2O3为主要存在形式,ZrB2和Al2O3为复合粉体的主晶相.复合粉体中有少量ZrO2的存在,分析认为是合成反应过程中未参加反应的ZrO2.ZrB2和Al2O3颗粒间形成了结合良好的界面,这主要与ZrB2的结晶过程有关.
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