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Interdiffusion behavior between Nb and MoSi_2 intermetallic compound

机译：Nb与MoSi_2金属间化合物的互扩散行为

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摘要

The interdiffusion behavior in Nb/MoSi_2 diffusion couples was studied in temperature interval 1250-1400℃ The average binary interdiffusion coefficients in Nb_5Si_3 phase were determined from the interdiffusion fluxes calculated directly from experimental concentration profiles. The concentration dependence ternary interdiffusion coefficients in (Nb,Mo)_5Si_3 phase were calculated over the selected compositional ranges. Strong diffusional interaction between Nb and Mo in (Nb,Mo)_5Si_3 phase had been unfolded by the cross-interdiffusion coefficients D_(NbMo)~(Si)and D_(MoNb)~(Si). The ternary interdiffusion coefficients were also examined to estimate binary interdiffusion coefficients and tracer diffusion coefficients of Nb and Mo in M_5Si_3 (M = Nb, Mo).
机译：研究了Nb / MoSi_2扩散对在1250-1400℃温度范围内的互扩散行为。根据实验浓度曲线直接计算出的互扩散通量，确定了Nb_5Si_3相的平均二元扩散系数。在选定的成分范围内计算了（Nb，Mo）_5Si_3相中浓度依赖性的三元互扩散系数。 Nb和Mo在（Nb，Mo）_5Si_3相中的强扩散相互作用已通过交叉扩散系数D_（NbMo）〜（Si）和D_（MoNb）〜（Si）展开。还检查了三元互扩散系数，以估计M_5Si_3（M = Nb，Mo）中Nb和Mo的二元互扩散系数和示踪扩散系数。

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  • 来源
    《Materials Science and Engineering》 |2010年第26期|p.6787-6793|共7页
  • 作者

    Dengzun Yao; Junying Yang; Weiyan Gong; Chungen Zhou;

  • 作者单位

    Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, 37 Xueyuan Rd., Beijing 100191, China;

    Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, 37 Xueyuan Rd., Beijing 100191, China;

    Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, 37 Xueyuan Rd., Beijing 100191, China;

    Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, 37 Xueyuan Rd., Beijing 100191, China;

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  • 正文语种 eng
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  • 关键词

    interdiffusion; multicomponent; silicide; MoSi_2;

    机译：相互扩散多组分硅化物MoSi_2;

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