本文研究真空烧结工艺制备Al2O3/ZrO2(Y2O3)复合材料，详细分析ZrO2(3Y)和ZrO2(2Y)含量对Al2O3基陶瓷烧结致密化、显微结构及相变行为的影响。分析ZrO2(Y2O3)的含量对复合材料显微组织的影响以及相变量存在着临界含量值。结果表明：制备Al2O3/ZrO2(3Y)和Al2O3/ZrO2(2Y)复合材料，含量为15vol%和20vol%时，烧结试样相对密度分别为99.6.％和98.5％，ZrO2的晶粒平均尺寸为1.1μm和1.8μm，样品断裂前后的最大相变量分别是 ＝43.8vol%， =18.4vol%。
In this paper, preparation of composites Al2O3/ZrO2(Y2O3) by vacuum sintering was studied. The effects of the contents of ZrO2(3Y) and ZrO2(2Y) on the sintering densification, microstructure and transformation behavior in detail were analyzed. The effect of the content of ZrO2(Y2O3) on the microstructure of the composites was also investigated, and it was found that there is a critical value of the content. The results also show that when the contents of ZrO2(Y2O3) were 15vol% and 20vol%, the relative densities of the composites Al2O3/ZrO2(Y2O3) were 99.6% and 98.5%, respectively, and the corresponding average grains of ZrO2(Y2O3) were 1.1μm and 1.8μm. In addition, the transformation quantities of the samples before and after their fracture were ＝43.8vol% and =18.4vol%.
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