| 镍液中Mg-O平衡及Fe、Al、Cr对镁活度的影响 |
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| 引用本文： | 韩其勇, 王丛桦. 镍液中Mg-O平衡及Fe、Al、Cr对镁活度的影响[J]. 工程科学学报, 1991, 13(5): 461-466. DOI: 10.13374/j.issn1001-053x.1991.05.010 |
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| 作者姓名： | 韩其勇 王丛桦 |
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| 摘 要： | 在密闭容器中用蒸汽平衡法研究了1480℃～1590℃内,镍液中镁-氧反应平衡,以及1480℃下镍液中合金元素Fe、Al、Cr对镁的活度的影响。实验测得,1480～1580℃下:$log {K_{{rm{MgO}}}} = 0.50 + 1.27 times {10^4}/T;△G_{{rm{MgO}}}^{rm{o}} = 2.43 times {10^5} - 9.57T({rm{J/mol}});e_{rm{O}}^{{rm{Mg}}} = 1.10 times {10^3} - 2.19 times {10^6}/T$。1480℃下：$e_{{rm{Mg}}}^{{rm{Fe}}} = - 0.28;e_{{rm{Mg}}}^{{rm{Al}}} = - 0.51;e_{{rm{Mg}}}^{{rm{Cr}}} = 0.72$。
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| 关 键 词： | 镍 Mg-O平衡 活度 合金元素 |
| 收稿时间： | 1990-07-26 |
Equilibrium of Mg-O and the Effect of Fe,Al and Cr on the Activity of Mg in Molten Nickel |
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| Han Qiyong, Wang Conghua. Equilibrium of Mg-O and the Effect of Fe,Al and Cr on the Activity of Mg in Molten Nickel[J]. Chinese Journal of Engineering, 1991, 13(5): 461-466. DOI: 10.13374/j.issn1001-053x.1991.05.010 |
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| Authors: | Han Qiyong Wang Conghua |
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| Abstract: | The equilibrium constant of Mg-O in Nickel melt at the temperature range of 1 480℃ to 1580℃ was determined with the vapour equilibrium method in a sealed chamber. The influence of the alloying elements Fe, Al and Cr on the activity of Mg in nickel melts at 1480℃ mas investigated. It was found that at 1480℃ to 1580℃: $log {K_{{rm{MgO}}}} = 0.50 + 1.27 times {10^4}/T;G_{{rm{MgO}}}^{rm{o}} = 2.43 times {10^5} - 9.57T({rm{J/mol}});e_{rm{Mg}}^{{rm{O}}} = 1.10 times {10^3} - 2.19 times {10^6}/T$; And at 1480℃: $e_{{rm{Mg}}}^{{rm{Fe}}} = - 0.28;e_{{rm{Mg}}}^{{rm{Al}}} = - 0.51;e_{{rm{Mg}}}^{{rm{Cr}}} = 0.72$ |
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| Keywords: | nickel Mg-O equilibrium activity alloying element |
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