The sequence of phase formation during mechanical alloying of chromium and silicon powders

被引：10

作者：

Zhang, DL

机构：

[1] Department of Mining and Metallurgical Engineering, University of Queensland, Brisbane

来源：

JOURNAL OF MATERIALS SCIENCE | 1996年 / 31卷 / 04期

关键词：

D O I：

10.1007/BF00352887

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The sequence of phase formation during mechanical alloying of chromium and silicon powders has been studied using high-energy ball milling of mixtures of elemental powders with different Si/Cr atomic ratios. X-ray diffactometry and transmission electron microscopy have been utilized to identify the phases and to characterize the microstructure of the powders. All four equilibrium phases in the Cr-Si system can form. With a Si/Cr atomic ratio equal to or higher than 3/5, CrSi2 is always the first phase to form, and then CrSi2 can react with chromium to form CrSi or Cr5Si3, depending on the Si/Cr atomic ratio. This is similar to the sequence of phase formation during annealing of multilayer chromium and silicon thin films. However, with low Si/Cr atomic ratio close to 1/3, Cr3Si is the first and only phase to form during mechanical alloying.

引用

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页码：895 / 899

页数：5

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