Ti-Al/TiC+Al_2O_3复合材料的制备与性能  

Preparation and Properties of Ti-Al/TiC+Al_2O_3 Composites

作　　者：李江田[1] 孙康宁[1] 赵萍[1] 田涛[1] 

机构地区：[1]山东大学材料液态结构及其遗传性教育部重点实验室工程陶瓷山东省重点实验室,山东济南250061

出　　处：《机械工程材料》2005年第1期30-33,共4页Materials For Mechanical Engineering

基　　金：山东省自然科学基金资助项目(Q99F01)

摘　　要：用机械合金化和热压烧结制备了Ti Al/TiC+Al2O3复合材料。研究了不同烧结温度(1550、1650℃)和热处理温度(700、900℃)对烧结体的力学性能和显微组织的影响。结果表明:烧结体具有良好的力学性能,硬度达到92HRA,抗弯强度可大于600MPa,而断裂韧度最高可达8 021MPa·m1/2。Ti-Al/TiC+Al_2O_3 composites were prepaed by mechanical alloying and hot-pressing sintering. The effects of different sintering temperatures (1 550 ℃, 1 660 ℃) and heat-treatment temperatures(700 ℃, 900 ??￡(c)on the mechanical properties and microstructure have been studied. The results show that the composites have excellent properties with hardness of 92HRA, bending strength higher than 600 MPa, and maximum fracture toughness of 8.021 MPa?¤ma?a(c)1/2

关 键 词：机械舍金化 复合材料 热压烧结 

分 类 号：TB331[一般工业技术—材料科学与工程] TQ174[化学工程—陶瓷工业]