Al-Ti-C体系中Al对合成TiC的影响  

Effect of Al in Al-Ti-C System on Synthesis of TiC

作　　者：梁艳峰[1] 王宏铮 

机构地区：[1]西安工业大学材料与化工学院,陕西西安710032 [2]山西柴油机工业有限公司生产安全部,山西大同037000

出　　处：《热加工工艺》2010年第20期80-82,90,共4页Hot Working Technology

基　　金：陕西省教育厅专项科研项目(09JK486);西安工业大学校长基金(XAGDXJJ0909)

摘　　要：通过压块在不同温度下的烧结反应,借助DTA、XRD分析手段,研究了Al-Ti-C体系中Al对合成TiC的影响。结果表明,烧结后的压块显示出典型的自蔓延高温合成特点。无Al的条件下,Ti很难与C直接反应生成TiC,液态铝可作为很好的扩散介质,并且Al是通过生成Al3Ti而参加自蔓延高温反应。当Ti/C原子比为1,烧结温度为1000℃,压块中的Al量在10wt%左右时,Al-Ti-C体系能较为完全地生成TiC。The effects of aluminum on the formation of TiC were studied through DTA and XRD techniques.A series of sintering experiments using Al-Ti-C powder were conducted at different temperature.The results show that the sintered preforms present typical SHS features.Ti is difficult to react directly with C without adding Al.Liquid Al serves as a good diffusion matter.Al joins the SHS reaction through the formation of Al3Ti.The content of Al in the preforms should be controlled in approximately 10wt%,as the atomic ratio of Ti/C is 1,sintering at 1000 ℃.

关 键 词：Al-Ti-C体系 烧结 自蔓延高温合成 TIC 

分 类 号：TG146[一般工业技术—材料科学与工程]