在m-ZrO2中添加不同摩尔质量分数的亚微米A12O3,真空热压烧结成复合陶瓷.通过X-射线衍射和扫描电镜以及能谱对复合陶瓷进行表征,并对材料的密度及力学性能进行了检测和分析.实验结果表明:Al2O3的加入提高了烧结密度,强化了材料的晶界,部分Al2O3颗粒嵌入到ZrO2基体晶粒内,形成"晶内型"结构;复合材料中存在多种增韧机制.相对于无掺杂的ZrO2,添加Al2O3后的材料硬度,抗弯强度和断裂韧性都有所提高.
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