摘要
根据固体与分子经验电子理论(EET)以及异相界面电子结构模型,系统计算了(Ti,Me)C/Fe系列金属陶瓷界面电子结构(Me=Mo、W、V、Nb、Ta),初步分析了其界面电子结构与界面润湿、金属陶瓷力学性能之间的关系,结果表明:Me的添加使TiC/Fe金属陶瓷界面电子密度增大,界面润湿改善,改善界面润湿的能力从大到小排列为:Mo、W>Nb、Ta>V;另外,Me的加入使TiC/Fe金属陶瓷界面电子密度差增大,界面应力增大,有利于陶瓷晶粒的细化和提高界面结合强度,Mo、W添加剂能有效提高TiC/Fe金属陶瓷界面强韧性。
Based on the empirical electron theory （EET） of solids and molecules and the valence electron theory of biphase interface, the interracial valence electron structure of （Ti, Me）C/Fe system （Me=Mo, W, V, Nb, Ta） was calculated, and the relationships between interracial valence electron structure and properties were analysed. The results indicate that Me could improve TiC/Fe eermet＇s interracial electron density and interface grain-refining and interracial co electron density difference. It is beneficial to the improvements of interfacial wettability, ceramic njunction and their ability sequence is Mo, W〉Nb, Ta〉V; in addition, Mo and W can always improve the interracial obdurability of TiC/Fe cermet.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2009年第A02期525-528,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50672016)
广西科学研究与技术开发项目(0731003
05112001-2A4)
自治区重点实验室建设基金(063006-5C-09)
桂林工学院科研启动金(005006007)资助
