烧结助剂对95氧化铝瓷性能的影响  

Effect of Sintering Additives on the Properties of 95 Alumina Ceramics

作　　者：夏清[1] 严运[1] 严小艳[1] 叶昌[1] 

机构地区：[1]长沙理工大学物理与电子科学学院,长沙410114

出　　处：《硅酸盐通报》2014年第2期266-270,共5页Bulletin of the Chinese Ceramic Society

基　　金：湖南省科技计划项目(2012GK3055);2012年校级大学生研究性学习与创新性实验计划项目(2012-108);2013年湖南省大学生研究性学习和创新性实验计划项目(2013-115);省重点学科建设项目资助

摘　　要：采用正交实验,X射线衍射分析、电子显微镜及视频显微镜分析,研究了MgO-CaO-SiO2与TiO2烧结助剂及烧成温度对95氧化铝瓷的密度和洛氏硬度等性质的影响。结果表明:添加5%的MgO-CaO-SiO2,同时添加1.0%的TiO2,可实现95氧化铝瓷试样在1520℃时及常压下达到致密烧结,获得的试样吸水率为0.07%,体积密度为3.64g/cm3,洛氏硬度为90,相比其它常压烧结方法制备的95氧化铝瓷的烧结温度降低了约150℃。The effects of MgO-CaO-SiO2 system,TiO2 and firing temperature of the density and hardness on the properties of 95 alumina ceramic were investigated by orthogonal experiments, X-ray diffraction, scanning electron microscopy and video optic microscopy analysis. The results show that with sintering additives of 5% MgO-CaO-SiO2 and 1% TiO2, it can realize the same effect as the molded 95 alumina ceramic samples which are sintered at 1520 ℃ under normal pressure ,with the water absorption of 0.07%, bulk density of 3.64 g/cm3 and the rockwell hardness of 90. It lowers sintering temperature by 150 ℃ compared with other normal sintering methods for the preparation of 95 alumina ceramics.

关 键 词：烧结助剂 95氧化铝瓷 性能 正交实验 

分 类 号：TQ174[化学工程—陶瓷工业]