MoO<sub>2</sub>和NiMo化合物性能差异的价电子结构分析

陆晓锋; 王华明

MoO₂和NiMo化合物性能差异的价电子结构分析

北京航空航天大学材料科学与工程学院, 北京 100191

基金项目: 国家自然科学基金资助项目(50625413)

详细信息

作者简介:
陆晓锋(1976-),男,吉林通榆人,博士生,lulxf@163.com.

中图分类号: TG 146; TG 113.25
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- 被引次数: 0
出版历程
- 收稿日期: 2008-05-23
- 网络出版日期: 2009-06-30

Valence electron structure analysis of property differences between MoO₂ and NiMo compounds

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 应用经验电子理论中的键距差法计算了激光熔化沉积MoO₂增强 γ /NiMo合金中两种化合物即MoO₂和NiMo的价电子结构,研究了价电子结构与两种化合物的硬度、强度和熔点差异的关系,并用实验测量结果进行了验证.表明价电子结构中的共价电子总数与总价电子数之比可以作为衡量MoO₂和NiMo强度高低的依据;价电子结构中最强键的理论键距可以作为衡量MoO₂和NiMo熔点高低的依据;但价电子结构中最强共价键上的共价电子对数不能单独作为衡量MoO₂和NiMo硬度高低的依据.
- 激光熔化沉积 /
- 合金 /
- 价电子结构 /
- 硬度 /
- 强度 /
- 熔点
Abstract: Valence electron structures of NiMo and MoO₂ compounds in a MoO₂-strengthened γ /NiMo alloy were analyzed by a bond length difference method on the basis of Yu’s Empirical electron theory of solids and molecules. Relationships between hardness, strength and melting point differences of the two compounds and their respective valence electron structure were investigated. The differences were confirmed by measurement results. The ratio of total covalent electron number to valence electron number on all of the bonds in valence electron structures could be used to compare strength of NiMo and MoO₂. Length of the strongest bond in the valence electron structure could be used to measure melting point of NiMo and MoO₂. However, covalent electron pair number of the strongest bond in the valence electron structure could not be viewed as the sole standard for comparing hardness of the two compounds.
- laser melting deposition /
- alloy /
- valence electron structure /
- hardness /
- strength /
- melting point

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参考文献(1)

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