Effect of Tin on the Reaction Synthesis of Ternary Carbide Ti_3AlC_2  

作　　者：周卫兵 

机构地区：[1]School of Materials Science and Engineering, Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2009年第2期283-286,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China (No.20771088, No.50572080) ;Doctoral Foundation of Wuhan University of Technology (No.471-38650142)

摘　　要：The effect of tin on synthesis of Ti3AlC2 by spark plasma sintering （SPS） from TiC/Ti/Al powders was investigated. X-ray diffraction （XRD） and scanning electron microscopy （SEM） were used for phase identification and microstructure evaluation. The experimental results show that addition of tin can considerably accelerate the synthesis reaction of Ti3AlC2 and fully dense, essentially single-phase polycrystalline Ti3AlC2 could be successfully obtained by sintering 2TiC/1Ti/1Al/0.2Sn powders at 1200-1250 ℃ under a pressure of 30 MPa. SEM images show that Ti3AlC2 samples in about 2-5 μm thick and 10-25μm long platelets can be obtained. The fracture toughness and flexural strength of Ti3AlC2 were 6.5±0.2 MPa·m^1/2 and 560±10 MPa, respectively.The effect of tin on synthesis of Ti3AlC2 by spark plasma sintering （SPS） from TiC/Ti/Al powders was investigated. X-ray diffraction （XRD） and scanning electron microscopy （SEM） were used for phase identification and microstructure evaluation. The experimental results show that addition of tin can considerably accelerate the synthesis reaction of Ti3AlC2 and fully dense, essentially single-phase polycrystalline Ti3AlC2 could be successfully obtained by sintering 2TiC/1Ti/1Al/0.2Sn powders at 1200-1250 ℃ under a pressure of 30 MPa. SEM images show that Ti3AlC2 samples in about 2-5 μm thick and 10-25μm long platelets can be obtained. The fracture toughness and flexural strength of Ti3AlC2 were 6.5±0.2 MPa·m^1/2 and 560±10 MPa, respectively.

关 键 词：titanium aluminum carbide spark sintering technique synthesis 

分 类 号：O614.411[理学—无机化学]