Reduction of metal oxides by mechanical alloying method

被引：32
作者：
Tokumitsu, K [1 ]
机构：
[1] Univ Tokyo, Dept Mat Sci, Bunkyo Ku, Tokyo 113, Japan
来源：
SOLID STATE IONICS | 1997年 / 101卷
关键词：
reduction; mechanical activation; ball-milling; mechanical alloying; silver oxide; copper oxide; iron oxide; Fe-37 Mossbauer spectroscopy;
D O I：
10.1016/S0167-2738(97)00277-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The reduction of metal oxides is usually carried out at high temperature in appropriate conditions with respect to equilibrium thermodynamics. However using the high activity of fresh surfaces enables mechanically activated reduction. After ball-milling of silver oxide, Ag2O, copper oxide, CuO, and hematite, Fe2O3, respectively, with carbon powder, metallic silver and copper could be obtained at room temperature and hematite was reduced to magnetite. The reduction processes were investigated by X-ray diffraction and Fe-57 Mossbauer spectroscopy.
引用
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页码：25 / 31
页数：7
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