金属学报  1982, Vol. 18 Issue (3): 371-377

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FeTiO_3-MgTiO_3固溶体的氧分压和活度

李国勋;曹蓉江

冶金工业部有色金属研究总院;冶金工业部有色金属研究总院

ON THE OXYGEN PARTIAL PRESSURE AND ACTIVITY OF FeTiO_3-MgTiO_3 SOLID-SOLUTION SYSTEM

LI Guoxun; Cao Rongjiang (General Research Institute of Nonferrous Metals; Ministry of Metallurgical Industry; Beijing)

李国勋;曹蓉江. FeTiO_3-MgTiO_3固溶体的氧分压和活度[J]. 金属学报, 1982, 18(3): 371-377.
, . ON THE OXYGEN PARTIAL PRESSURE AND ACTIVITY OF FeTiO_3-MgTiO_3 SOLID-SOLUTION SYSTEM[J]. Acta Metall Sin, 1982, 18(3): 371-377.

摘要 参考文献 相关文章 Metrics 全文: PDF(502 KB)   摘要: 采用固体电解质氧浓差电池研究了FeTiO_3-MgTiO_3固溶体系的氧分压和活度。选用Fe/FeO为参比极,测得其氧分压,并求出非化学计量FeO的标准自由焓ΔG°FeO=-259030+60.25T(J·mol~(-1))。测定了固溶体系不同组成,在900—1200℃区间的氧分压和FeO的活度。其结果表明,二者均随温度的升高而增加。将数据处理后,得到生成复合氧化物FeTiO_3的标准生成自由焓,ΔG°FeTio_3=-40470+19.75T(J·mol~(-1))以及固溶体的组元活度与组成的关系图。 Abstract：The oxygen partial pressure and activity of FeTiO_3-MgTiO_3 solid-solution system were studied by means of oxygen concentration cell with the solid electrolyte. Taken Fe/FeO as reference electrode, the oxygen partial pressure was measured, and standard free enthalpy of formation of non-stoichiometric FeO (w/istite) was obtained as ΔG_(FeO)~0=-259030+60.25T (J·mol~(-1)). Furthermore, the oxygen partial pressure and wustite activity of the various compositions of the solid-solution system were measured at the temperature range of 900—1200℃. The results show that both values increase with the increase of temperature. The standard free enthalpy of formation of complex oxide FeTiO_3, ΔG_(FeTiO_3)~0=-40470+19.75T (J·mol~(-1)) and the activity-composition relation of this solid-solution series were obtained. 收稿日期: 1982-03-18      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 李国勋 曹蓉江 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1982/V18/I3/371 1 Johnson, R. E.; Woermann, E.; Muan, A., Am. J. Sci., 271 (1971) , 278． 2 Seetharaman, S.; Abraham, K. P., Indian J. Technol., 6 (1968) , No. 4, 123． 3 Engcll, H.-J., Z. Phys. Chem. Neue Folge, 35 (1962) , 192． 4 北京钢铁学院编,冶金过程物理化学研究方法,1975,下册,p.475． 5 Reed, Thomas, B., Free Energy of Formation of Binary Compounds, MIT Press, Cambridge, Mass, 1971． 6 Taylor, R. W.; Schmalzricd, H., J. Phys. Chem., 68 (1964) , 2444． 7 Richardson, F. D.; Jefes, J. H. E., J. Iron Steel Inst., 163 (1949) , 397． 8 小野勝敏,森山徐一郎,日本鉱业会誌,89(1973) ,No.5,313． 9 Haggerty, S. E.; Lindsley, D. H., Carnegie Inst. Washington, Yearbook, 1968-1969． Pub. 1970, p.247-9． 10 Kubaschcwski, O., High Temp. High Pressures,4 (1972) , No. 1,1． 11 Richardson, F. D.; Jeffes, J. H. E.; Withers, G., J. Iron Steel Inst., 166 (1950) , 213． 12 Grey, E.; Reid, A. E.; Jones, D. G., Trans. Inst. Min. Metall., Sect. C, 83 (1974) , No. 811, C 105．X No related articles found! Viewed Full text Abstract Cited   Shared      Discussed