透辉石增韧补强氧化铝基陶瓷材料烧结动力学和烧结机制

人工晶体学报, 2008, 37(5): 1177-1182.

透辉石增韧补强氧化铝基陶瓷材料烧结动力学和烧结机制

孙军龙 ^1, , 张希华 ^2, , 刘长霞 ^3, , 段彩云 ^4,

1.鲁东大学先进制造与自动化技术重点实验室,烟台,264025

2.山东大学材料科学与工程学院,济南,250061

3.鲁东大学先进制造与自动化技术重点实验室,烟台,264025

4.山东商务职业学院,烟台,264025

基金项目: 山东省自然科学基金(Y2007F29) 鲁东大学引进人才基金(LY20074303;LY200074302)

关键词：氧化铝 , 透辉石 , 烧结动力学 , 烧结机制

Sintering Kinetics and Mechanisms of Alumina Matrix Ceramic Materials Toughened by Diopside

研究了透辉石增韧补强Al2O3,基陶瓷材料的无压烧结致密化过程,根据压坏烧结时烧结温度和保温时间对线收缩率的影响,计算了复合材料液相烧结的表观激活能Q,得出其致密化机理为扩散机制控制.建立了透辉石增韧补强Al2O3,基陶瓷材料的烧结动力学方程,并由特征指数n值对比研究了它们的烧结致密化机制.纯Al2O3陶瓷材料烧结过程中的物质迁移机制由体扩散控制;透辉石增韧补强Al2O3基陶瓷材料烧结过程中的物质迁移机制既有体扩散,也有晶界扩散.

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透辉石增韧补强氧化铝基陶瓷材料烧结动力学和烧结机制

Sintering Kinetics and Mechanisms of Alumina Matrix Ceramic Materials Toughened by Diopside

参考文献