Invar合金的电子化学势均衡判据

Electrochemical potential equilibrium criterion of Invar alloy

用二元团簇作为描述Invar合金的基本结构单元,运用"团簇共振"结构模型,建立起以某一已知二元团簇与连接原子按1:x比例连接,描述Invar合金的电子化学势均衡判据.给出了Invar合金成分的经验分子式,即Invar合金成分=[团簇]1(连接原子)x.运用此判据,解析了部分Invar合金成分.发现典型的Invar合金实验成分与经验分子式相符合,说明基于"团簇共振"模型的Invar合金的电子化学势判据很好地解释了Invar合金成分的形成规律.

In this paper, Invar alloy composition is described by using binary cluster as basic structural unit. We use“cluster resonance” structure model and establish the connection of a known binary clusters with atoms by an atomic ratio of 1 ： x to describe Invar alloy component empirical criterion. Invar alloy composition formula is given, that is, Invar alloy component=[clusters]1 （glue atom）x. Using this criterion, some of Invar alloy compositions are calculated, and it is confirmed that the experimentally determined typical Invar alloy compositions are in good agreement with the compositions calculated from the formula. This shows that the formation of the rule of the Invar alloy composition is well explained by the composition formulae criterion.