点击次数：

论文类型：期刊论文

发表时间：2014-08-03

发表刊物：PHILOSOPHICAL MAGAZINE

收录刊物：SCIE、EI、Scopus

卷号：94

期号：22

页面范围：2520-2540

ISSN号：1478-6435

关键字：ideal metallic glasses; cluster formula; cluster-plus-glue-atom model; valence electron concentration; cluster-resonance model

摘要：It is known that ideal metallic glasses fully complying with the Hume-Rothery stabilization mechanism can be expressed by a universal cluster formula of the form [cluster](glue atom)(1 or 3). In the present work, it is shown, after a re-examination of the cluster-resonance model, that the number of electrons per unit cluster formula, e/u, is universally 24. The cluster formulas are then the atomic as well as the electronic structural units, mimicking the 'molecular' formulas for chemical substances. The origin of different electron number per atom ratios e/a is related to the total number of atoms Z in unit cluster formula, e/a = 24/Z. The 24 electron formulas are well confirmed in typical binary and ternary bulk metallic glasses.