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Wang Chonglin, Lin Shuzhi, Wang Xiaobin. THEORETICAL ANALYSIS OF CO-REDUCED Fe—Mo POWDER[J]. Powder Metallurgy Technology, 1993, 11(1): 8-14.
Citation: Wang Chonglin, Lin Shuzhi, Wang Xiaobin. THEORETICAL ANALYSIS OF CO-REDUCED Fe—Mo POWDER[J]. Powder Metallurgy Technology, 1993, 11(1): 8-14.
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THEORETICAL ANALYSIS OF CO-REDUCED Fe—Mo POWDER

  • 1. Institute of Metal Research, Academia Sinica, Shenyang 110015;

  • 2. Shenyang Institute of Metallurgy, Shenyang 110015

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  • Received Date: February 08, 1992
  • Available Online: August 06, 2021
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    • Abstract
  • In this paper, several theoretical problems about co-reduced Fe-Mo powder are discussed. Thermodynamical results show that MoO3 or FeO·MoO3 can be reduced by C or CO easily, Through mathematical analysis of diffusion equation, it is pointed that the value of Dt/l2 could be a criterion representing the homogenity of element distribution. If it is far below one,diffusion proceeds without homogeneity. When mixed Fe and Mo powders were sintered at 1120-1180℃, Mo could diffuse into iron matrix. In the situation of co-reduced process,the corresponding value of Dt/l2 is far above one. Mc diffuses very homogeneously in iron matrix. Lattice constants of pure Fe and Fe-Mo powders were measured. It is 0.28664nm for Fe,and it is 0.28673nm for Fe-Mo. It is suggested that Mo should be solved in the lattice of Fe. The sites of Fe are partly replaced by slightly bigger atoms of Mo, therefore the lattice constant of Fe-Mo alloy powder is enlarged.
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