摘要
以Ti/SI/C为原料，采用反应烧结方法制备Ti3SiC2材料，并分析反应烧结机理。结果表明，以3Ti／1．2Si／2C为起始原料，烧结温度在1250—1300℃之间，可以得到Ti3SiC2含量90％以上的Ti3SiC2材料。Ti3SiC2的反应合成机理是固-液反应，即：Ti3SiC2和β—Ti形成液相，液相冉与TiC反应，进而合成Ti3SiC2。
The Ti3SiC2 ceramic was prepared by reaction sintering with Ti/Si/C powder mixtures as raw material and the reaction mechanism was analyzed. The results show that bulk Ti3SiC2 ceramic with the amount of Ti3SiC2 over 90% could be obtained successfully by reaction sintering, 3Ti/1.2Si/2C ratio mixture powders are used as raw material and the sintering temperature is in the range of 1 250-1 300 ℃. The reaction mechanism of Ti3SiC2 is solid-liquid reaction, i.e., the Ti3SiC2 phase is synthesized by the reaction of TiC phase with liquid phase,which results from reaction of Ti3SiC2 with β-Ti phase.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2008年第4期44-47,共4页
Ordnance Material Science and Engineering
基金
陕西省自然科学基金资助(编号:2007E104)
关键词
烧结温度
固-液反应
热力学分析
TI3SIC2
反应机理
sintering temperature
solid-liquid reaction
thermodynamic analysis
Ti3SiC2
reaction mechanism
