微波反应快速合成Ti_3AlC_2和Ti_2AlC材料  

Synthesis of Ternary Titanium Aluminum Carbides Using Microwave Synthesis Technique

作　　者：梁宝岩[1] 王艳芝[1] 张旺玺[1] 徐世帅[1] 

机构地区：[1]中原工学院材料与化工学院,河南郑州450007

出　　处：《陶瓷学报》2015年第5期476-480,共5页Journal of Ceramics

基　　金：河南省教育厅重点项目(13A430132);河南省基础与前沿技术研究计划(编号:132300410164);河南省省院科技合作项目(编号:122106000051;142106000193);河南省高校科技创新团队等自然科学研究计划(编号:15IRTSTHN004;12A430024;13A430128;14A430007)项目资助

摘　　要：以Ti、Al和石墨粉体为原料,采用微波热处理技术,反应合成了钛铝碳材料(Ti3AlC2和Ti2AlC)。研究了原料配比和添加过量Al对反应合成钛铝碳的影响。研究结果表明,通过微波处理Ti/Al/C坯体,升温速率为200℃/min,升温至680℃会诱发热爆反应。当原料配比为3Ti/Al/2C时,合成产物的主相为Ti3AlC2、Ti2AlC和Ti C,以及少量的Al3Ti。2Ti/Al/C反应后生成的主相则为Ti3AlC2和Ti2AlC,还有少量Ti C、Ti3AlC和Al3Ti。在以上两种原料中适当添加过量的Al均可以显著的促进Ti3AlC2和Ti2AlC的合成,显著减少产物中的Ti C和其它钛铝化合物相。在原料中当多添加0.2和0.3 mol Al时,产物基本上由Ti3AlC2和Ti2AlC组成。The titanium aluminum carbides materials were reaction synthesized by microwave heat treatment from Ti, Al and graphite powders. Effect of raw materials and Al content on the synthesis of titanium aluminum carbides was studied. The results show that thermal explosion may occur when Ti, Al and graphite powders were heated by microwave at 680 ℃ with the heating rate of 200 ℃/min. The main phases of the products from 3Ti/Al/2C powders were Ti3AlC2 and Ti2AlC. Some amounts of Al3Ti and TiC were obtained. The main phases of the products from 2Ti/Al/C powders were Ti3AlC2 and Ti2AlC. Some amounts of AI3Ti, Ti3AlC and TiC were obtained. Adding appropriate amounts of Al to both raw materials mentioned above may obviously promote the synthesis of titanium aluminum carbides, which can apparently reduce TiC and TiAl phases content in the products. With Al content increased by 0.2 and 0.3 mol, the products were basically composed of Ti3AlC2 and Ti2AlC.

关 键 词：TI3ALC2 TI2ALC 微波合成 原料配比 

分 类 号：TQ174.75[化学工程—陶瓷工业]