Ti-Si-C三元机械合金化粉末热压制备Ti_3SiC_2  

Hot press mechanical alloying powders of Ti-Si-C to synthesize Ti_3SiC_2

作　　者：张俊才[1] 

机构地区：[1]黑龙江科技学院材料科学与工程学院,哈尔滨150027

出　　处：《黑龙江科技学院学报》2009年第2期113-116,共4页Journal of Heilongjiang Institute of Science and Technology

基　　金：黑龙江省教育厅科学技术研究项目(10551274)

摘　　要：针对原有Ti3SiC2的制备方法存在烧结温度高、工艺控制困难的问题,以Ti、Si、C三元粉末为原料,分别采用普通混料和机械合金化对原料粉末进行混合,对混合后的粉末进行XRD、TEM和DTA分析,从而确定合成Ti3SiC2的真空热压工艺,并对经热压制备的材料进行组织结构分析。结果表明:机械合金化能降低合成Ti3SiC2的反应温度,使合成Ti3SiC2的过程更加充分,热压后的烧结体组织更加均匀,几乎没有成分偏析。Directed at higher sintering temperature and more difficult technology control, this paper introduces a mixture of Ti, Si and C powders by the way of ordinary mixing and mechanical alloying mixing, and XRD, TEM, DTA analysis of the mixed powders to determine the technology of vacuum hot press. The paper gives an analysis of texture and structural of vacuum hot press bodies. The results show that mechanical alloying can reduce the temperature of reaction synthetic Ti3 SIC2, and make reaction synthesis of Ti3SiC2 be more ample; mechanical alloying even makes the organization of hot press body become more uniform, with little composition segregation.

关 键 词：机械合金化 热压 TI3SIC2 

分 类 号：O641[理学—物理化学]