4-4 The influence of micro-addition Chromium on the Valence Electron Structure and toughness of Fe<,2>B phase
Fe<,2>B is a typical kind of intermetallic compound, which has perfect behavior on the corrosion resistant of molten zinc. However, its fatal intrinsic brittleness limits its further utilities in the Hot- Dip Galvanizing Industry. Therefore, its worthwhile to improve the eigen-brittleness of Fe<,2>B phase. In this research, the valence electron structure of Fe <,2>B containing various chromium content has been studied, on the basis of Yus empirical electron theory of solids and molecules (EET). Furthermore, the values of valence electrons on every bond in an atomic coordinate cluster have been calculated by the method of bond length difference (BLD). The results show that, in the (Fe<,1-x>Cr<,x>)<,2>B phase, the number of covalent electron pairs and the weaker bond energy can be increased by the substituting atom-Cr. Accordingly, the effects of of micro-addition Chromium on Fe<,2>B phase are explained at the electron structure level. In addition, the brittleness and the rigidity of Fe<,2>B phase with and without micro-addition chromium were investigated In comparison with pure Fe<,2>B phase, the intrinsic brittleness and the rigidity of Fe<,2>B phase containing chromium will be lower. Namely, there is a conformability between the experimental results and the theoretical analysis.
Fe<,2>B Chromium empirical electron theory (EET) valence electron structure eigen-brittleness
Xu Juan Chen Lin Ma Jingjing Wang Yan
School of Material Science and Engineering Programs, Hebei University of Technology, Tianjin, 300130, China
国际会议
第七届亚太镀锌大会(The 7th Asia Pacific General Galvanizing Conference)(7th APGGC)
北京
英文
204-207
2007-09-14（万方平台首次上网日期，不代表论文的发表时间）