研究了ZnO/Y_2O_3复合添加剂对75%氧化铝基陶瓷烧结性、体积密度、抗折强度和物相组成的影响. 结果表明: 当ZnO/Y_2O_3为1∶ 0.3时, 在1290 ℃烧结后, 样品的性能可达到: 抗折强度149.9 MPa和体积密度3.16 g·cm~(-3). XRD分析结果表明: ZnO/Y_2O_3不同比例复合时, 锌铝尖晶石相、钙长石相和刚玉相发生了较大变化, 从而影响了材料的性能.
Sintering behavior, bulk density, bending strength and phases of the alumina-based ceramics with ZnO/Y_2O_3 addition were investigated. The results showed that after sintering at 1290 ℃, the bending strength and the bulk density of the composite sample with the addition of ZnO/Y_2O_3 (1∶ 0.3) was 149.9 MPa and 3.16 g·cm~(-3), respectively. XRD analysis indicated that the ratio of ZnO/Y2O3 influenced the amount of the alumina, zinc-aluminium spinel and anorthite phases so as to affect the properties of the alumina-based ceramics.
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