放电等离子合成Ti3AlC2／TiB2复合材料的研究  

Preparation of Ti_3AlC_2/TiB_2 Composites Sintered by Spark Plasma Sintering

作　　者：周卫兵[1] 梅炳初[2] 朱教群[1] 卢雪飞[2] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《武汉理工大学学报》2008年第5期1-3,共3页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50572080);博士启动基金(471-38650142)

摘　　要：采用放电等离子烧结工艺成功地制备了Ti3AlC2/TiB2复合材料。研究表明:在1 250℃,30 MPa压力和保温8 min下烧结,可以得到相对密度达98%以上的致密Ti3AlC2/TiB2块体材料;在Ti3AlC2中添加TiB2能大幅度提高材料性能,Ti3AlC2/TiB2复合材料Vickers硬度随TiB2掺量的增加而增大,最大可达到10.4 GPa;当TiB2体积含量为10%时,复合材料的最大的抗弯强度为696 MPa,断裂韧性为6.6 MPa.m1/2。The synthesis of Ti3A1C2/TiB2 composites was studied by in-situ spark plasma sintering with different volume content of TiB2. Results indicated the bulk Ti3A1C2/TiB2 was fabricated by SPS, which .soaked for 8 min under a pres, sure of 30 MPa at 1 250 ℃. The properties of composites was great increased with the addition of TiB2 ; the Vicker＇ s hardness increased with addition of TiB2 content, the maximum value is 10, 4 GPa. The maximum flexural strength and fracture toughness reached maximum value, which were 696 MPa and 6.6 MPa·m^1/2 when the volume content of TiB2 was 10%.

关 键 词：放电等离子 钛碳化铝 二硼化钛 制备 性能 复合材料 

分 类 号：TB333[一般工业技术—材料科学与工程]