金属学报  1986, Vol. 22 Issue (2): 51-60

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铁液中Ce-Al-O和Nd-Al-O平衡的研究

刁淑生;韩其勇;林钢;陈冬

北京钢铁学院;北京钢铁学院;北京钢铁学院;北京钢铁学院

EQUILIBRIA OF Ce-Al-O AND Nd-Al-O IN MOLTEN IRON

DIAO Shusheng; HAN Qiyong; LIN Gang; CHEN Dong (Beijing University of Iron and Steel Technology)

刁淑生;韩其勇;林钢;陈冬. 铁液中Ce-Al-O和Nd-Al-O平衡的研究[J]. 金属学报, 1986, 22(2): 51-60.
, , , . EQUILIBRIA OF Ce-Al-O AND Nd-Al-O IN MOLTEN IRON[J]. Acta Metall Sin, 1986, 22(2): 51-60.

摘要 参考文献 相关文章 Metrics 全文: PDF(745 KB)   摘要: 本工作应用放射性同位素技术和无水电解液电解法测定铁液中溶解态稀土的含量,用直接比色法分析和计算铁液中溶解态的Al含量,在稀土作用过的Al_2O_3坩埚内,使用ZrO_2(MgO)固体电解质浓差电池直接测定铁液中溶解态的氧活度。用外推法求得铁液中RE-Al-O平衡常数K_(REAlO_3)和相互作用系数e_(RE)~(Al)与温度的关系式。 对于CeAlO_(3(2))=[Ce]+[Al]+3[O]平衡反应 lgK_(CeAlO_3)=-37900/T+5.84 △G_(CeAlO_3)~0=173400-26.7T(cal/mol) e_(Ce)~(Al)=20500/T-13.53 对于NdAlO_(3(3))=[Nd]+[Al]+3[O]平衡反应 lgK_(NdAlO_3)=-24700/T+O.69 △G_(NdAlO_3)~0=113030-3.16T(cal/mol) e_(Nd)~(Al)=13500/T-9.33 Abstract：Equilibrium of Ce-Al-O or Nd-Al-O system in molten iron was studied by separately smelting the radioactive isotope of ~(141)Ce or ~(147)Nd in an Al_2O_3 crucible filled with pure iron to form ~(141)CeAlO_3 or ~(147)NdAlO_3 around its inner wall. The content of dissolved Ce or Nd in iron was determined by means of radioassay and electrolysis in organic electrolyte. The analysis of dissolved Al in iron was obtained by colorimetry and followed by calculation. The activity of oxygen as dissolved state in liquid iron was directly measured by solid electrolyte sensors made of ZrO_2(MgO) tube. By extrapolation of data obtained, the temperature dependence of equilibrium constant of RE-Al-O in molten iron, K_(REAlO_3) or of interaction coefficient, e_(RE)~(Al), may be described as: For reaction CeAlO_(3(s)=[Ce]+[Al]+3[O] lg K_(CeAlO_3)=-37900/T+5.84 △G_(CeAlO_3)~0=175400-26.7T cal/mol e_(Ce)~(Al)=20500/T-13.53 For reaction NdAlO_(3(s)) =[Nd]+[Al]+3[O] lg K_(NdAlO_3)=-24700/T+0.69 △G_(NdAlO_3)~0=113030-3.16T cal/mol e_(Nd)~(Al)=13500/T-9.33 收稿日期: 1986-02-18      基金资助:中国科学院科学基金 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 刁淑生 韩其勇 林钢 陈冬 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I2/51 1 韩其勇;吴卫江;方克明;霍成章;周小龙,中日钢铁学术会议,第一届炼钢学术会议报告,中国金属学会,北京,1981年p.25;钢铁,17 (1982) ,№2,1． 2 韩其勇;刘士伟;牛红兵;唐志伟,金属学报,18 (1982) ,176． 3 韩其勇;项长祥,董元篪;杨斯馥,日本,中国铁钢学术会议第二回制钢学术会议报告,东京,1983,p.10． 4 韩其勇;董元篪;牛锡安;项长祥;杨斯馥,金属学报,20 (1984) ,204． 5 武恩佑;陈鹏,北京钢铁学院学报,(1982) ,№2,157． 6 丰锡安,北京钢铁学院研究生论文,1979． 7 Sigworth, G.K.; Elliott, J. F., Met. Sci., 8 (1974) , 298． 8 韩其勇,北京钢铁学院学报,(1982) ,№2,157． 9 #12 10 #12 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed