添加TiC和Ti_3AlC_2对燃烧合成Ti_3AlC_2粉体的影响  

Effects of TiC and Ti_3AlC_2 Addition on Combustion Synthesis of Ti_3AlC_2 Powders

作　　者：郭俊明[1] 陈克新[1] 葛振斌[1] 周和平[1] 宁晓山[1] 

机构地区：[1]清华大学材料科学与工程系新型陶瓷与精细工艺国家重点实验室

出　　处：《无机材料学报》2003年第1期251-256,共6页Journal of Inorganic Materials

基　　金：国家自然科学基金(50102002)

摘　　要：Ti、AI、C和TiC组成的Ti:Al:C=3:1.1:1.8(摩尔比)体系的燃烧合成实验结果表明,当在体系中未加入TiC时,得到的主要是TiC,但加入TiC后燃烧合成产物主要是Ti3AlC2,且Ti3AlC2量随TiC加入量的增加而增加,随燃烧反应体系温度的降低而增加;加入晶种Ti3AlC2有利于合成Ti3AlC2相物质.Titanium aluminium carbide (Ti3AlC2) powder was fabricated through combustion synthesis process by using Ti, Al, C and TiC powders as raw materials. The experimental results show that the phase formation of the final product is affected by the addition of TiC exceptionally. TiC is the main phase in the final product under the condition of no addition of TiC in the raw materials. However, Ti3AlC2 becomes the main phase with the addition of TiC in the raw materials. Furthermore, the amount of Ti3AlC2 is enhanced with increasing the amount of TiC addition in the raw materials and decreasing the combustion temperatures. The addition of Ti3AlC2 as seed crystal is beneficial to form Ti3AlC2.

关 键 词：燃烧合成 TI3ALC2 TIC 陶瓷粉体 碳化钛 碳铝化钛 

分 类 号：TQ174.758[化学工程—陶瓷工业]