Phase transformations in the hematite-metal system during mechanical alloying

被引：0
|
作者：
K. A. Kozlov
V. A. Shabashov
A. V. Litvinov
V. V. Sagaradze
机构：
[1] Russian Academy of Sciences,Institute of Metal Physics, Ural Division
来源：
The Physics of Metals and Metallography | 2009年 / 107卷
关键词：
81.20.Ev; 61.43.Gt;
D O I：
暂无
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学科分类号：
摘要：
Mössbauer spectroscopy and X-ray diffraction are used to show that the phase transformations in hematite α-Fe2O3-metal (M = Fe, Ni, Ti, Zr) powder mixtures induced by severe cold plastic deformation in ball mills occur via the formation of M-Fe-O solid solutions, redox reactions with the reduction of metallic iron, and the formation of secondary MxOy oxides and MxFey intermetallics. Mechanical activation in a ball mill is compared to that under high-pressure shear in Bridgman anvils. The transformations that take place in a ball mill are found to have several stages and to be accelerated.
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页码：384 / 393
页数：9
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