【摘要】 探讨制备耐磨微晶玻璃的成分范围及主晶相和晶核剂的选择 ,在此基础上 ,采用DTA ,XRD ,SEM等测试手段分析了材料的晶化动力学、晶相和显微结构。所得到的微晶玻璃的主晶相为透辉石 ,其组织致密、结构均匀、晶粒尺寸在 10 0nm左右。该材料具有优良的晶化特性 ,析晶活化能为E =78.81kJ/mol,晶体生长指数为 3.0 1。对该材料与高铝瓷的耐磨性进行了比较 ,其耐磨性是 90 %Al2 O3瓷球的 1.5倍。更多还原

【Abstract】 Compositions for preparing the glass ceramics with good abrasion resistance and selections of main crystallizing form and nucleating agents were discussed. Crystallization kinetics, crystal phases and microstructure were analyzed by DTA,XRD and SEM. The main crystal phase in the glass ceramics is in the form of diopside, which has a homogeneous microstructure and with grain size of about 100 nm. The material has good crystallizing characteristic, the activation energy of crystallization of the glass E =78.81 kJ/mol and crystal growth parameter n is 3.01. Compared with 90%Al 2O 3 ceramics, the abrasive resistance of glass ceramics is 1.5 times as that of the alumina ceramics.更多还原