金属学报  1988, Vol. 24 Issue (4): 299-304

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CaO-SiO_2-La_2O_3渣系中CaO和La_2O_3的活度及渣结构探讨

吴建中;王常珍

东北工学院;教授;沈阳东北工学院有色冶金系

ACTIVITIES OF CaO AND La_2O_3 IN LIQUID CaO-SiO_2-La_2O_3 SLAGS AND SLAG STRUCTURE

WU Jianzhong;WANG Changzhen Northeast University of Technology; ShenyangProfessor;Dept.Non-ferrous Metallurgy;Northeast University of Technology; Shenyang

吴建中;王常珍. CaO-SiO_2-La_2O_3渣系中CaO和La_2O_3的活度及渣结构探讨[J]. 金属学报, 1988, 24(4): 299-304.
, . ACTIVITIES OF CaO AND La_2O_3 IN LIQUID CaO-SiO_2-La_2O_3 SLAGS AND SLAG STRUCTURE[J]. Acta Metall Sin, 1988, 24(4): 299-304.

摘要 参考文献 相关文章 Metrics 全文: PDF(451 KB)   摘要: 用渣金平衡法确定了1600℃下CaO在SiO_2La_2O_3三元渣系中CaO和La_2O_3的活度,在浓度三角形中绘出了相应的等活度线;给出了Sn在La稀溶液中γ_(La)~0与温度的关系,考察并讨论了已有的硅酸盐渣的结构模型对这个渣系的适用性. 关键词 ： CaO-SiO-La_2O_3三元渣系,  渣结构,  活度     Abstract：The activity of CaO and La_2O_3 in the liquid ternary slag CaO-SiO-La_2O_3 has been determined by equilibrating Sn with the slag phase in a graphitecrucible under 1 atm of CO at 1600℃. The experimental results showed that theactivity of CaO and La_2O_3 changes slowly while the ratio of mole fraction, x_(CaO)/x_(SiO_2), is less than unit, but varies sharply while the ratio increases from 1 to 1.2.In addition, by equilibrating Sn with the binary slag B_2O_3-La_2O_3 saturated with solidLa_2O_3 at three different temperatures, the relation between lg γ°_(La) and 1/T isdetermined as follows: lg γ°_(La)=-29400/T+11.37(1500-1600℃) A random network model of molten silicate structure was applied to CaO-SiO-La_2O_3. It was found that the experimentally determined activity-composition curvesof CaO are qualitatively reproduced by the curves calculated with the model, butthe curves of La_2O_3 are considerably different from the calculated ones. It impliesthat the model used is over-simplified and that the difference in interaction energybetween the metal cations of different valence and silicate anions should be consid-ered. Key words： ternary system of CaQ-SiO-La_2O_3    slag    slag structure    activity 收稿日期: 1988-04-18      基金资助:国家自然科学基金 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 吴建中 王常珍 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1988/V24/I4/299 1 张庆登,周祖惠.稀士,1982;(3) :34 2 王渭源,邹元爔.金属学报,1963;6:40 3 王常珍,邹元爔.金属学报,1980;16:190 4 王常珍,叶树青,于丁羽,郭文全.金属学报,1984;20:A357 5 Levin E M, Robbins CBR, McMurdie H F. In: Reser M K ed., Phase Diagrams for Ceramists, Supplement, The American Ceramic Society, 1969: Fig. 237． Fig. 2299． Fig. 2372 6 郭祝崑,CaSiO_3-La_2O_3伪二元相图,(未发表) 7 王常珍,杨代银.金属学报,1979;15:433 8 张子青,周继程,田彦文等.全国第5届冶金过程物理化学年会论文集,上册,西安,中国金属学会冶金物理化学学术委员会,1984:254 9 Gschneidner K A Jr., Kippenhan N, NcMasters O D. Thermochemistry of the Rare Earths, Amesl Iowa: Rare Earth Infoimation Center, Institute for Atomic Research, 1973: 25 10 Fincham C J B, Richarason F D. Proc Roy Soc, London, 1954: A223: 40 11 Yokokawa t, Niwa K. Trans Jpn Inst Met, 1969; 10: 3 12 Yokokawa T, Niwa K. Trans Jpn Inst Met, 1969; 10: 81 13 Lin P L Pelton A D. Metall Tians, 1979; 10B: 667 [1] 居天华, 舒念, 何维, 丁学勇. 合金溶液中溶质间活度相互作用系数预测模型[J]. 金属学报, 2023, 59(11): 1533-1540. [2] 马荣耀, 赵林, 王长罡, 穆鑫, 魏欣, 董俊华, 柯伟. 静水压力对金属腐蚀热力学及动力学的影响[J]. 金属学报, 2019, 55(2): 281-290. [3] 陈晓燕,金喆,白雪峰,周亦胄,金涛,孙晓峰. C对一种镍基高温合金与陶瓷型壳界面反应及润湿性的影响*[J]. 金属学报, 2015, 51(7): 853-858. [4] 荣冬松,姜勇,巩建鸣. 奥氏体不锈钢低温超饱和渗碳实验及热动力学模拟研究*[J]. 金属学报, 2015, 51(12): 1516-1522. [5] 佟振峰 戴勇 杨文 杨启法. 辐照与He协同作用对低活度铁素体/马氏体钢F82H微观结构的影响[J]. 金属学报, 2011, 47(7): 965-970. [6] 吴令; 姜周华; 龚伟; 梁连科 . 遗传神经网络改进正规溶液模型及其在二元渣系中的应用[J]. 金属学报, 2008, 44(7): 799-802 . [7] 蒋光锐; 刘源; 李言祥; 苏彦庆; 郭景杰 . 多元合金熔体组元活度系数计算方法的改进[J]. 金属学报, 2007, 43(5): 503-508 . [8] 乐启炽; 崔建忠 . 三元系彩色热镀锌镀液热力学性质[J]. 金属学报, 2006, 42(11): 1182-1186 . [9] 熊华平; 毛唯; 马文利 . 液相渗Si提高TiAl基合金的高温抗氧化性[J]. 金属学报, 2003, 39(7): 744-748 . [10] 乐启炽; 张新建; 崔建忠; 路贵民 . 金属合金溶液热力学模型研究进展[J]. 金属学报, 2003, 39(1): 35-42 . [11] 陈星秋; 丁学勇 . 二元合金熔体组元活度计算式的改进[J]. 金属学报, 2000, 36(5): 492-496 . [12] 范鹏; 周国治 . 由组元的物性参数预测金属熔体的热力学性质[J]. 金属学报, 1999, 35(4): 421-426 . [13] 侯怀宇; 谢刚 . 用NRTL方程预测三元,四元液态合金体系的热力学数据[J]. 金属学报, 1999, 35(3): 292-295 . [14] 马中庭;J.Ohser;D.Janke. 用活度相互作用系数描述多元体系热力学[J]. 金属学报, 1998, 34(7): 753-762. [15] 罗利华;丁学勇;郭丹;曹文斌;邹宗树;王文忠. 活度、活度相互作用系数数据库软件开发[J]. 金属学报, 1998, 34(4): 388-392. Viewed Full text Abstract Cited   Shared      Discussed