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首页> 外文期刊>ISIJ international >Measurement and Thermodynamics of Carbon Solubilities in Molten Si-Fe, Si-Ni, and Si-Cr-Fe Alloys at 2073 K
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Measurement and Thermodynamics of Carbon Solubilities in Molten Si-Fe, Si-Ni, and Si-Cr-Fe Alloys at 2073 K

机译：2073 k的熔融Si-Fe，Si-镍和Si-Cr-Fe合金中碳溶解度的测量和热力学

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摘要

The equilibrium phase relations of molten Si-Fe, Si-Ni, and Si-Fe-Cr alloys saturated with either silicon carbide (SiC) or graphite, which are candidates for the solvent for rapid solution growth of SiC, have been investigated. The measured carbon solubilities at 2073 K were 0.19-6.6 mol% for the Si-(24.1-70.1) mol% Fe, 0.061-5.2 mol% for Si-(30.0-85.0) mol% Ni, and 1.1-3.9 mol% for Si-(50-x) mol% Fe-x mol% Cr (x = 10.4-40.1) alloys. A quasi-chemical model that assumes that the carbon atoms are introduced into the interstitial sites of the Si-Fe, Si-Ni, and Si-Fe-Cr solvents and obstruct the bonding between solvent atoms was used to evaluate the activity coefficient of carbon in each alloy. The estimation reproduced the trends of the measured carbon solubilities fairly well. However, the estimation using the sub-regular solution model often overestimated the carbon solubilities. Thus, the carbon behavior in molten silicon-transition metal alloys is well described by the quasi-chemical model.
机译：研究了用碳化硅（SiC）或石墨饱和的熔融Si-Fe，Si-Ni和Si-Fe-Cr合金的平衡相位关系，其是溶剂的溶剂，用于快速溶解SiC的溶剂。对于Si-（24.1-70.1）摩尔％Fe，0.061-5.2摩尔％的Mol％Ni，0.061-5.2摩尔％，0.061-5.2摩尔％Ni，0.061-5.2摩尔％Ni，0.061-5.2摩尔％Ni，0.061-5.2摩尔％，摩尔％Ni为1.1-3.9摩尔％ Si-（50-x）摩尔％Fe-x Mol％Cr（x = 10.4-40.1）合金。假设碳原子被引入Si-Fe，Si-Ni和Si-Fe-Cr溶剂的间隙位点并阻碍溶剂原子之间的粘合来评估碳的粘合剂来评估碳活性系数的准化学模型。在每种合金中。估计可相当良好地复制了测量的碳溶解度的趋势。然而，使用子定期解决方案模型的估计通常估计碳溶解度。因此，熔融硅 - 过渡金属合金中的碳行为通过准化学模型很好地描述。

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  • 来源
    《ISIJ international》 |2020年第10期|2123-2128|共6页
  • 作者

    Sakiko KAWANISHI; Takeshi YOSHIKAWA;

  • 作者单位

    Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira Aoba-ku Sendai Miyagi 980-8577 Japan;

    Institute of Industrial Science The University of Tokyo 4-6-1 Komaba Meguro-ku Tokyo 153-8505 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    carbon solubility; thermodynamics; quasi-chemical model;

    机译：碳溶解度;热力学;准化学模型;

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