节点文献
起始粉末粒径对Al2O3-TiC陶瓷力学性能的影响
Effect of the starting powder size on the mechanical properties of Al2O3 - TiC composite
【摘要】 热压烧结制备了Al2O3和Al2O3-TiC复合陶瓷。研究了起始粉末粒径对Al2O3-TiC复合陶瓷力学性能的影响。试验结果表明,添加TiC显著地提高了氧化铝陶瓷的力学性能,σf和K1c分别提高了70％和90％。其中大颗粒TiC对氧化铝陶瓷的增韧尤为有利,其裂纹偏转增长了扩张路径,提高了材料的断裂抗力。
【Abstract】 In this paper, Al2O3 ceramics and Al2O3 - TiC composite ceramics were synthesized by hot press sintering, and the effect of starting powder size on the mechanical properties of Al2O3 - TiC composites was studied. The results showed that the mechanical properties can be greatly improved by addition of TiC into alumina ceramics, the σf and KIC increase 70% and 90% respectively. The coarse particle of TiC helps increase toughness of Al2O3 - TiC ceramic and lengthens the route of cracks deflection, thus increasing the fracture resistance.
【关键词】 Al2O3-TiC复合陶瓷；
粉末粒径；
力学性能；
裂纹偏转；
【Key words】 Al2O3 - TiC composite； powder size； mechanical properties； crack deflection；
【Key words】 Al2O3 - TiC composite； powder size； mechanical properties； crack deflection；
【基金】 安徽省自然科学基金(03044902)
- 【文献出处】 兵器材料科学与工程 ,Ordnance Material Science and Engineering , 编辑部邮箱 ,2004年05期
- 【分类号】TQ174
- 【被引频次】6
- 【下载频次】197