Fabrication of High-purity Ternary Carbide Ti_3AlC_2 by Spark Plasma Sintering(SPS)Technique  

作　　者：SONG Jinghong YANG Haitao 

机构地区：[1]The Centre for Materials Research and Analysis,Wuhan University of Technology ,Wuhan 430074, China [2]Shenzhen University, Shenzhen Key Lab of Special Functional Materials,Shenzhen 518060, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2008年第2期177-180,共4页武汉理工大学学报（材料科学英文版）

基　　金：the National Natural Science Foundation of China(No.50572080)

摘　　要：The effect of silicon on synthesis of Ti3AlC2 by spark plasma sintering （SPS） from TiC/Ti/Al powders was investigated. X-ray diffraction （XRD） and scanning electron microscope （SEM） were used for phase identification and microstructure evaluation. The results show that addition of silicon can considerably accelerate the synthesis reaction of Ti3AlC2 and fully dense, essentially single-phase （purity 〉98%） polycrystalline Ti3AlC2 could be successfully obtained by sintering 2TiC/lTi/lAl/0.2Si powders at 1 200- 1 250 ℃ under a pressure of 30 MPa. SEM photographs show that the obtained Ti3AlC2 samples from mixtures powders are in plane-shape with a size of about 2-5 μm and 10-25 μm in the thickness dimension and elongated dimension, respectively.The effect of silicon on synthesis of Ti3AlC2 by spark plasma sintering （SPS） from TiC/Ti/Al powders was investigated. X-ray diffraction （XRD） and scanning electron microscope （SEM） were used for phase identification and microstructure evaluation. The results show that addition of silicon can considerably accelerate the synthesis reaction of Ti3AlC2 and fully dense, essentially single-phase （purity 〉98%） polycrystalline Ti3AlC2 could be successfully obtained by sintering 2TiC/lTi/lAl/0.2Si powders at 1 200- 1 250 ℃ under a pressure of 30 MPa. SEM photographs show that the obtained Ti3AlC2 samples from mixtures powders are in plane-shape with a size of about 2-5 μm and 10-25 μm in the thickness dimension and elongated dimension, respectively.

关 键 词：TI3ALC2 ceramics carbides microstructure layered structures 

分 类 号：TQ174.7[化学工程—陶瓷工业]