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A STUDY ON Fe-Nb-O EQUILIBRIA AND THEIR THERMODYNAMIC PARAMETERS |
GU Longjian;TANG Zhonghe Cetral Iron and Steel Research Institute;Ministry of Metallurgical Industry;Beijing |
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Cite this article:
GU Longjian;TANG Zhonghe Cetral Iron and Steel Research Institute;Ministry of Metallurgical Industry;Beijing. A STUDY ON Fe-Nb-O EQUILIBRIA AND THEIR THERMODYNAMIC PARAMETERS. Acta Metall Sin, 1985, 21(2): 73-80.
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Abstract Equilibrium oxygen activities in Fe-Nb-O melts containing 0.004 to 3.80wt-% Nb were determined by oxygen concentration cell with solid electrolyte ZrO_2(MgO)at 1833,1873 and 1913 K.The deoxidation products were identified byX-ray diffraction analysis to be tetragonal NbO_2 with a rutile structure whenNb>0.20 wt-%,to be Nb_2O_5 when Nb content being in the range of 0.05 to0.20 wt-% and to be FeNb_2O_6 when Nb<0.05 wt-%.With decreasing Nb content,i.e.with increasing oxygen activity,the form of the deoxidation products changesin the following order:NbO_2→Nb_2O_5→FeNb_2O_6With the experimental data the Nb-O equilibrium constants and other relatedthermodynamic parameters in the range of 1833 to 1913 K were calculated.
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Received: 18 February 1985
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1 邵象华,钢铁,17(1982) ,№2,23. 2 Elle,M.;Chipman,J.,Trans.Metall.Soc.AIME.,221(1961) ,701. 3 成田贵一,小山伸二,铁(?)钢,52(1966) ,786. 4 Narita,K.;Koyama,S.,Trans.Iron Steel Inst.Jpn.,9(1969) ,53. 5 佐藤雄孝;大森康男;三本木贡治;铃木健一郎,铁(?)钢,54(1968) ,330. 6 Fischer,W.A.;Janke,D.,Arch.Eisenhuettenwes.,42(1971) ,695. 7 #12 8 Buzek,Z.;Macoszek,M.;Szlauer,J.,Hutn.Listy,27(1972) ,549. 9 唐仲和;朱果灵;单玲珍;谢效方;陈永定,钢铁研究总院学报,3(1983) ,№1,9. 10 魏寿昆;张圣弼;佟亭,中国金属学会第四届全国冶金过程物理化学学术年会论文,鞍山,1982. 11 Elliott,J.F.;Gleiser,M.;Ramakrishna,V.,Thermochemistry for Steelmaking,Vol.2,Addison-Wesley Pub.,1963,p.620. 12 Elliott,J.F.,Electric Furnace Conf.Proc.,32(1974) ,73. 13 Janke,D.;Fischer,W.A.,Arch.Eisenuettenwes.,46(1975) ,755. 14 林昭二;鹈野达二,铁(?)钢,68(1982) ,1728. 15 魏寿昆,冶金过程热力学,上海科学技术出版社,(1980) ,289. 16 #1 |
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