Mechanically activated synthesis of nanocrystalline ternary carbide Fe3Mo3C

被引:16
作者
Zakeri, M. [1 ]
Rahimipour, M. R. [2 ]
Khanmohammadian, A. [1 ]
机构
[1] Islamic Azad Univ Saveh Branch, Dept Mat Sci, Saveh, Iran
[2] Mat & Energy Res Ctr, Dept Ceram, Tehran, Iran
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 492卷 / 1-2期
关键词
mechanical activation; ternary carbide; Fe3Mo3C; nanocrystalline;
D O I
10.1016/j.msea.2008.05.008
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this investigation, Fe3Mo3C ternary carbide was synthesized from the elemental powders of 3Mo/3Fe/C by mechanical milling and subsequent heat treatment. Structural and Morphological evolutions of powders were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Results showed that no phase transformation occurs during milling. A nanostructure Mo (Fe) solid solution obtained after 30 h of milling. With increasing milling time to 70 h no change takes place except grain size reduction to 9 nm and strain enhancement to 0.86%. Milled powders have spheroid shape and very narrow size distribution about 2 mu m at the end of milling. Fe3Mo3C Was synthesized during annealing of 70 h milled sample at 700 degrees C. Undesired phases of MoOC and Fe2C form at 1100 degrees C. No transformation takes place during annealing of 10 h milled sample at 700 degrees C. Mean grain size and Strain get to 69 nm and 0.23% respectively with annealing of 70 h milled sample at 1100 degrees C. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:311 / 316
页数:6
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