铝对3Ti/SiC/C体系自蔓延高温合成Ti_3SiC_2的影响  

Effects of Al on Ti_3SiC_2 Synthesized by Self-propagating High Temperature Synthesis from 3Ti/SiC/C Powders

作　　者：张艳丽[1] 徐世帅[1] 刘红燕[1] 梁宝岩[1] 

机构地区：[1]中原工学院材料与化工学院,郑州450007

出　　处：《中国陶瓷》2015年第6期26-29,共4页China Ceramics

基　　金：河南省教育厅重点项目(13A430132)

摘　　要：采用3Ti/SiC/C粉体为原料,通过自蔓延高温合成技术制备了Ti3SiC2材料。探讨Al助剂对制备Ti3SiC2的作用。研究结果发现C-SiC-3Ti粉体能够产生SHS反应,产品由TiC、Ti5Si3和Ti3SiC2三相组成,Ti3SiC2含量约46%。添适当Al可显著促成Ti3SiC2相合成。选用3Ti/SiC/C/0.3Al粉体作原材料,产物中Ti3SiC2含量高达92.5wt%。3Ti/SiC/C mixed powders were used as the starting materials for Ti3SiC2 synthesized materials by SHS.Effects of Al on the synthesis of Ti3SiC2 were studied.The result shows that 3Ti/Si C/C powders occurs selfpropagation reaction.After reaction,the synthesized product contained Ti C,Ti5Si3 and Ti3SiC2.Ti3SiC2 content of the product reached about 46 wt%.Addition of appropriate amounts of Al may obviously promote the synthesis of Ti3SiC2.When the starting materials was 3Ti/SiC/C/0.3Al powders,Ti3SiC2 content of the products reached the highest value of 92.5 wt%.

关 键 词：TI3SIC2 自蔓延高温合成 AL 

分 类 号：TQ174.1[化学工程—陶瓷工业]