CAJ | 학술논문

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TiC,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TiC、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TiC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.
이Ti、Al화석묵분체위원료,채용미파열처리기술,반응합성료태려탄재료(Ti3AlC2화Ti2AlC).연구료원료배비화첨가과량Al대반응합성태려탄적영향.연구결과표명,통과미파처리Ti/Al/C배체,승온속솔위200 ℃/min,승온지680 ℃회유발열폭반응.당원료배비위3Ti/Al/2C시,합성산물적주상위Ti3AlC2、Ti2AlC화TiC,이급소량적Al3Ti.2Ti/Al/C반응후생성적주상칙위Ti3AlC2화Ti2AlC,환유소량TiC、Ti3AlC화Al3Ti.재이상량충원료중괄당첨가과량적Al균가이현저적촉진Ti3AlC2화Ti2AlC적합성,현저감소산물중적TiC화기타태려화합물상.재원료중당다첨가0.2화0.3 mol Al시,산물기본상유Ti3AlC2화Ti2AlC조성.
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 Al3Ti,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 Ti3AlC2and Ti2AlC.