-4cm/s 和1.01′10-3cm/s。"/>

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真空感應熔煉鈾熔體Fe揮發(fā)動力學
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中國科學院金屬研究所,中國科學院金屬研究所,中國科學院金屬研究所,中國工程物理研究院,中國工程物理研究院

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Evaportion dynamics of Fe element during vacuum induction melting of uranium
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Institute of Metal Research,Chinese Acdimic of Science,Institute of Metal Research,Chinese Acdimic of Science,Institute of Metal Research,Chinese Acdimic of Science,China Academy of Engineering Physics,Mianyang Sichuan,Institute of Metal Research,Chinese Acdimic of Science

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    摘要:

    研究了真空感應熔煉過程鈾熔體中Fe元素揮發(fā)的動力學規(guī)律,結果表明熔體中[Fe]=Fe(g)反應為一級反應,反應的表觀活化能約121kJ/mol,揮發(fā)過程受熔體中Fe在液相邊界層中擴散和液/氣界面化學反應共同控制,但溶質擴散影響更大,1673K和1853K溫度下?lián)]發(fā)反應的傳質系數(shù)分別為4.52′10-4cm/s 和1.01′10-3cm/s。

    Abstract:

    The vaporation dynamics of Fe element in uramium melting during vacuum induction melting bave been studied, the results of experiment and calculation showed that the evaporation rate of Fe was first order with respect to Fe content in the metal. The activation energy of evaporation of Fe form uranium melt was obtained to be 121kJ/mol, and the rate of Fe evaporation is simultaneously controlled by the diffusion through the liquid boundary layer and the evaporation reaction of Fe at the metal/gas interface, in which the mass transfer coefficient was estimated to be from 4.52′10-4cm/s at 1673K to 1.01′10-3cm/s at 1853K.

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陳波,杜戰(zhàn)輝,劉奎,張新建,王震宏.真空感應熔煉鈾熔體Fe揮發(fā)動力學[J].稀有金屬材料與工程,2017,46(9):2455~2458.[B. CHEN, Z. H. DU, K. LIU, X. J. ZHANG, Z. H. WANG. Evaportion dynamics of Fe element during vacuum induction melting of uranium[J]. Rare Metal Materials and Engineering,2017,46(9):2455~2458.]
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  • 收稿日期:2015-11-16
  • 最后修改日期:2017-09-12
  • 錄用日期:2016-12-06
  • 在線發(fā)布日期: 2017-11-29
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