摘要
采用原位反应热压法制备了自生Al2O3增强TiAl间金属化合物复合材料,通过第三元素(氧化铌)掺杂的形式,对其进行强化研究。采用DTA结合XRD分析对其反应过程进行了探讨。SEM,XRD及其它测试分析显示,引入氧化铌使铝热反应生成了更高的热能,材料能够在较低的温度下烧结。同时,Nb2O5的掺入对基体相生成比例(TiAl:Ti3Al)有一定的调控作用,也使材料中的自生氧化铝成分增强,对材料结构及性能产生了较大影响。
Spontaneous Al2O3 reinforced TiAI composite was prepared by reaction synthesis with hot pressing. The effect of doping Nb2O5 on microstructure was investigated as well. Adopting DTA, XRD analysis, their reaction courses were analysed and discussed. SEM, XRD, metallography analysis and other test showed that it is niobium oxide improved aluminium thermal reaction and released much higher energy which made the composite could be sintered under lower temperature. Meanwhile, the doping of Nb2O5 has a function to control and alter the proportion of the matrix （TiAl： Ti3Al）phase, strengthen the forming of spontaneous alumina composition in the material, and produce greater influence on the microstructure.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第11期1744-1747,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金资助项目(50432010
0372037)
陕西科技大学创新基金(SUST-B14)
作者简介
王芬，女，1959年生，教授，陕西科技大学材料科学与工程学院，陕西咸阳712081，电话：0910-3579137，E-mail：wangf@sust．edu．cn
