| Determination of the Surface Tension of Liquid Fe77.5Cu13Mo9.5 Ternary Monotectic Alloy |
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| 作者姓名： | 王海鹏 常健 罗炳池 魏炳波 |
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| 作者单位： | Department of Applied Physics, Northwestern Polytechnical University, Xi＇an 710072 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 50121101 and 50395105, NPU Doctorate Foundation under Grant No CX200420, and NPU Young Teachers Scientific and Technological Innovation Foundation. |
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| 摘 要： | Thermophysical properties of undercooled liquid monotectic alloys are usually difficult to be determined because of the great dittlculty in achieving large undercoolings. We measure the surface tension of liquid Fe77.5 Cu13Mo9.5 monotectic alloy by an electromagnetic oscillating drop method over a wide temperature range from 1577 to 1784 K, including both superheated and undercooled states. A good linear relationship exists between the surface tension and temperature. The surface tension value is 1.588 N/m at the monotectic temperature of 1703K, and its temperature coefficient is -3.7 × 10^-4 Nm^-1 K^-1. Based on the Butler equation, the surface tension is also calculated theoretically. The experimental and calculated results indicate that the effect of the enriched element on droplet surface is much more conspicuous than the other elements to decrease the surface tension.
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| 关 键 词： | Fe77.5Cu13Mo9.5 合金 液体 表面张力 |
| 收稿时间： | 2006-8-28 |
| 修稿时间： | 2006-08-28 |
Determination of the Surface Tension of Liquid Fe 77.5 Cu13Mo 9.5 Ternary Monotectic Alloy |
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| WANG Hai-Peng,CHANG Jian,LUO Bing-Chi,WEI Bing-Bo.Determination of the Surface Tension of Liquid Fe77.5Cu13Mo9.5 Ternary Monotectic Alloy[J].Chinese Physics Letters,2007,24(2):504-507. |
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| Authors: | WANG Hai-Peng CHANG Jian LUO Bing-Chi WEI Bing-Bo |
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| Affiliation: | Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710072 |
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| Abstract: | Thermophysical properties of undercooled liquid monotectic alloys are usually difficult to be determined because of the great difficulty in achieving large undercoolings. We measure the surface tension of liquid Fe 77.5 Cu13Mo 9.5 monotectic alloy by an electromagnetic oscillating drop method over a wide temperature range from 1577 to 1784K, including both superheated and undercooled states. A good linear relationship exists between the surface tension and temperature. The surface tension value is 1.588N/m at the monotectic temperature of 1703K, and its temperature coefficient is -3.7×10 -4 Nm -1 K -1. Based on the Butler equation, the surface tension is also calculated theoretically. The experimental and calculated results indicate that the effect of the enriched element on droplet surface is much more conspicuous than the other elements to decrease the surface tension. |
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| Keywords: | 61 25 Mv 68 03 Cd 65 20 +w |
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