Synthesis of Ti_3SiC_2 by spark plasma sintering(SPS) of elemental powders  

作　　者：朱教群 梅炳初 何利萍 陈艳林 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China [2]Department of Manufacturing Engineering and Engineering Management, Faculty of Science and Engineering, City University of Hong Kong, Hong Kong

出　　处：《中国有色金属学会会刊：英文版》2003年第1期46-49,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project( 5 0 172 0 37)supportedbytheNationalNaturalScienceFoundationofChina

摘　　要：Ti 3SiC 2 materials have been fabricated by spark plasma sintering of the elemental powders with the addition of Al. At the heating rate of 80 ℃/min and under the pressure of 30 MPa, the ideal synthesis temperature of Ti 3SiC 2 is in the range of 1 1501 250 ℃. The addition of Al is in favor of the formation of Ti 3SiC 2. The synthesized compound has the molecular of Ti 3Si 0.8Al 0.2C 2 and lattice parameters of a=0.306 9 nm, c=1.767 0 nm. Its grain is plane-shape with a size of about 50 μm in the elongated dimension. The prepared material has Vickers hardness of 3.55.5 GPa(at 1 N and 15 s) and is as readily machinable as graphite’s.Ti 3SiC 2 materials have been fabricated by spark plasma sintering of the elemental powders with the addition of Al. At the heating rate of 80 ℃/min and under the pressure of 30 MPa, the ideal synthesis temperature of Ti 3SiC 2 is in the range of 1 1501 250 ℃. The addition of Al is in favor of the formation of Ti 3SiC 2. The synthesized compound has the molecular of Ti 3Si 0.8Al 0.2C 2 and lattice parameters of a=0.306 9 nm, c=1.767 0 nm. Its grain is plane-shape with a size of about 50 μm in the elongated dimension. The prepared material has Vickers hardness of 3.55.5 GPa(at 1 N and 15 s) and is as readily machinable as graphite's.

关 键 词：TI3SIC2 合成技术 火花等离子体烧结 粉末 钛硅碳三元化合物 

分 类 号：TF125[冶金工程—粉末冶金]