(武汉工业大学 材料复合新技术国家重点实验室, 武汉 430070)
摘 要: 根据固体与分子经验电子理论, 通过键距差(BLD)方法, 对ZrC, ZrN和ZrB2相的价电子结构进行了计算: ZrC, ZrN, ZrB2晶体中最强键上的共价数 nA 和键能 E 的大小与硬度、熔点的高低是一致的, 而ZrB2具有强的层间结合是因Zr—B键仍具有一定的共价电子数及独特键络特征的结果。
关键字: ZrC, ZrN, ZrB2; 价电子结构; 性能
(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P.R.China)
Abstract:According to solid and molecular empirical electron theory the valenceelectron structure of ZrC, ZrN and ZrB2 phases are calculated by bond length difference(BLD) method. Themagnitude of the covalent number nA on the strongest chemical bond in ZrC, ZrN and ZrB2 crystals and chemical bond energy E are in agreement with that ofthe hardness and melting point. ZrB2 has strong atom layer due to certain covalence electron number on Zr—B bond and special bond net feature.
Key words: ZrC, ZrN, ZrB2; valence electron structure; property