应用轮廓吻合法测量Li2B4O7·KNbO3溶液的表面张力系数

无机材料学报

应用轮廓吻合法测量Li₂B₄O₇·KNbO₃溶液的表面张力系数

金蔚青¹; 长岛敏夫²; 依田真一²; 蒋元方³; 蔡丽霞¹; 潘志雷¹

1. 中国科学院上海硅酸盐研究所, 上海 200050; 2. 日本宇宙开发事业团, 筑波宇宙センタ一, 茨城县日本; 3. 华东师范大学物理系, 上海 200062

收稿日期:2000-06-14 修回日期:2000-06-29 出版日期:2001-05-20 网络出版日期:2001-05-20

Measurements of Surface Tension of Li₂B₄O₇·KNbO₃ Solution by Contour Curve Fitting Methods

JIN Wei-Qing¹; Toshio Nagashima²; Shinichi Yoda²; JIANG Yuan-Fang³; CAI Li-Xia¹; PAN Zhi-Lei ¹

1. Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China; 2. Space Utilization Research Center; Office of Space Utilization System; NASDA; 2-1-1 Sengen, Tsukuba, Ibaraki 305, Hapan; 3. Physics Department, East Normal Iniversity, Shanghai 200062, China

Received:2000-06-14 Revised:2000-06-29 Published:2001-05-20 Online:2001-05-20

摘要/Abstract

摘要： 讨论了一种表面张力测量方法一轮廓曲线吻合法．它是一种应用计算机技术，用数字图像信息处理液滴轮廓的方法．应用数字图像测量和信息处理技术，将置于氮化硼水平平板上的Ｌｉ_２Ｂ_４Ｏ_７＋ＫＮｂＯ_３液滴的轮廓图像记录在录像带上，然后转换成数字图像数据，并与理论方程的数值解吻合，求得表面张力系数．用这种方法侧得的Ｌｉ_２Ｂ_４Ｏ_７＋ＫＮｂＯ_３溶液的表面张力温度系数和表面张力溶质系数分别为 γ_Τ（ｍＮ／ｍ）＝２１０＋０．１５（Ｔ－９００℃），９００℃≤ Ｔ≤１０００℃； γ_ｃ（ｍＮ／ｍ）＝２２９-０．４５（Ｃ_ＫＮ－１０ｗｔ％），１０ｗｔ％≤ Ｃ_ＫＮ ≤３０ｗｔ％

关键词: 表面张力, 静止液滴, 轮廓曲线吻合法, Li₂B₄O₇·KNbO₃溶液

Abstract: A method for measuring the surface tension---Contour Curve Fitting Method, which is determined by digital video image processing of a sessile drop with using computer
was discussed. The image of a sessile drop of Li₂B₄O₇+KNbO₃ formed on a BN plate was recorded on a digital video tape and converted into digital data
of profile by using the technique of digital image acquisition and processing. The Segmented drop image was fitted with numerical solution of theoretical equations
to determine a surface tension. The thermal and solute surface tension coefficients were given by the following forms respectively, γ_T(mN/m)=210+0.15(T--900℃),
900℃≤ T≤1000℃ and γ_C(mN/m)=229--0.45(C_KN--10wt%), 10wt%≤ C_KN≤30wt%.

Key words: surface tension, sessile drop, contour curve fitting method, Li₂B₄O₇·KNbO₃ solution

中图分类号:

O733

金蔚青,长岛敏夫,依田真一,蒋元方,蔡丽霞,潘志雷. 应用轮廓吻合法测量Li₂B₄O₇·KNbO₃溶液的表面张力系数[J]. 无机材料学报.

JIN Wei-Qing,Toshio Nagashima,Shinichi Yoda,JIANG Yuan-Fang,CAI Li-Xia,PAN Zhi-Lei. Measurements of Surface Tension of Li₂B₄O₇·KNbO₃ Solution by Contour Curve Fitting Methods[J]. Journal of Inorganic Materials.

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应用轮廓吻合法测量Li₂B₄O₇·KNbO₃溶液的表面张力系数

Measurements of Surface Tension of Li₂B₄O₇·KNbO₃ Solution by Contour Curve Fitting Methods

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