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鈾熔體中Fe蒸氣分壓的測量及其活度計算
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Dissolution Equilibrium of Iron Vapour and Activities of Iron in Liquid Uranium-Iron Solutions
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    摘要:

    采用載流氣體攜帶法測量了1500~1600 ℃范圍U-Fe熔體上方Fe的蒸氣分壓，計算獲得Fe在U熔體中的活度、活度系數(shù)及標(biāo)準(zhǔn)溶解自由能。結(jié)果顯示，相對Raoult定律Fe為負(fù)偏差元素，1500和1600 ℃無限稀的鈾熔體中Fe的活度系數(shù)g 分別為0.344和0.485，其在鈾熔體中的標(biāo)準(zhǔn)溶解自由能與溫度關(guān)系符合DG0＝–448 682+125.4T。

    Abstract:

    A carrier method was used to measure the dissolution equilibrium of iron vapour over liquid U-Fe alloys from 1500 to 1600 °C, and then the activities as well as activity coefficients of iron in liquid U-Fe alloys were calculated from the results for iron. It is found that iron shows strong negative deviation from Raoult’s law, and the relationship between the standard free energy of dissolution reaction Fe(g)=[Fe]Y and temperature is DG0=–448682+125.4T. At 1500 and 1600 °C, the activity coefficients g of iron at infinite dilution are 0.344 and 0.485, respectively.

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陳 波,段玉潔,杜戰(zhàn)輝,劉 奎,張新建,王震宏.鈾熔體中Fe蒸氣分壓的測量及其活度計算[J].稀有金屬材料與工程,2015,44(11):2793~2797.[Chen Bo, Duan Yujie, Du Zhanhui, Liu Kui, Zhang Xinjian, Wang Zhenhong. Dissolution Equilibrium of Iron Vapour and Activities of Iron in Liquid Uranium-Iron Solutions[J]. Rare Metal Materials and Engineering,2015,44(11):2793~2797.]
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  • 收稿日期:2014-11-05
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  • 在線發(fā)布日期: 2016-07-29
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