层片状LaPO_4陶瓷的力学性能与显微结构  

Mechanical Properties and Microstructure of Layered LaPO_4 Ceramics

作　　者：王瑞刚[1] 潘伟[1] 蒋蒙宁[1] 陈健[1] 罗永明[1] 曹珍珠[1] 

机构地区：[1]清华大学材料系新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《无机材料学报》2003年第1期109-114,共6页Journal of Inorganic Materials

摘　　要：利用无压、热压、放电等离子三种烧结方法制备了高密度、层片状的LaPO4陶瓷.测定、表征了三种烧结路线合成LaPO4陶瓷的致密化程度、织构行为及基本力学性能.同时,基于Al2O3和LaPO4相之间可形成弱结合界面,无压烧结制备了可用硬质合金钢钻头钻孔的40wt％Al2O3/LaPO4可加工复合材料.Dense and layered LaPO4 ceramics were fabricated by using pressureless sintering, hot pressing and spark plasma sintering Densification, texture and mechanical properties of LaPO4 ceramics by different sintering routes were character ized. Based on the formation of weak interface of Al2O3 and LaPO4 phase, machinable 40wt%Al2O3/LaPO4 composite havinga hardness of 6.3 +/- 0.45GPa, was fabricated and characterized by using cemented carbide drill.

关 键 词：层片状LaPO4陶瓷 力学性能 显微结构 可加工陶瓷 磷酸镧 纤维增强陶瓷基复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ174.758[化学工程—陶瓷工业]