人工晶体学报2008，Vol.37Issue(4)：800-804,5.
自增韧和增强的镁铝尖晶石透明陶瓷
Situ-strengthened and Toughened Mg-Al Spinel Transparent Ceramics
摘要
Abstract
Transparent Mg-Al spinel ceramics MA1. 0, MA1.3, MA1.5 and MA1.8 was fabricated from MgO · nAl2O3 powder with n of 1. 0, 1.3, 1.5 and 1.8, respectively. These ceramics were sintered to be transparent through two combined sintering processes, i.e. vacuum sintering followed by hot isostatic pressing (HIP). Relative density of these ceramics decreases with n in MgO · nAl2O3 increasing because of second phase Al2O3 grains appearing in non-stoichiometric ceramics MA1.3, MA1.5 and MA1.8 during preparation. However, these non-stoichiometric ceramics show higher mechanical properties than ceramic MA1. 0. Fractural surfaces of non-stoichiometric ceramics observed by scanning electron microscopy (SEM) are featured with more transgranular fracture which contributes to improving their mechanical properties.关键词
透明陶瓷/机械性能/非化学配比/显微结构Key words
transparent ceramics/mechanical property/non-stoichiometry/microstructure分类
化学化工引用本文复制引用
黄存兵..自增韧和增强的镁铝尖晶石透明陶瓷[J].人工晶体学报,2008,37(4):800-804,5.基金项目
Project supported by the National Nature Science Foundation of China( No. 50272040) （ No. 50272040）
