通过共沉淀法获得包覆式Al2O3-Y2O3/ZrB2复合粉体,对其进行放电等离子烧结制备相应的复相陶瓷,并对不同YAG(钇铝石榴石)、Al2O3含量的复相陶瓷进行了氧化试验,用SEM、XRD和电子探针等研究了YAG、Al2O3对ZrB2陶瓷抗氧化性的影响.结果表明:制备的各种复相陶瓷和纯ZrB2陶瓷相比,在相同氧化条件下表面的氧化层厚度都有所变薄,YAG、Al2O3的加入可以改善ZrB2陶瓷的抗氧化性能;在相同氧化条件下,Al2O3含量越多,氧化层厚度越小;在高温条件下,复相陶瓷氧化层中均存在ZrO2、B2O3和Al18B4O33相,Al2O3含量越多,Al18B4O33相也越多.
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