Surface tension of liquid metal under plasma environment

等离子体环境下液态金属的表面张力

• 批准号: 13450310
• 负责人: NOGI Kiyoshi
• 金额: $ 8.19万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450310/
• 关键词: Surface tension; Plasma; surface active element; sulfur; ステンレス鋼; 溶接; 溶融池形状; アーク溶接; 溶け込み深さ; 溶融金属

Effect of Plasma on surface tension of liquid SUS 304 stainless steel containing various S concentration were measured in a wide temperature range and the following results were obtained.1.Surface tension of liquid SUS 304 stainless steel decreases with increasing S concentration and sulfur acts as surface active element.2.Temperature coefficient of surface tension of liquid stainless steel depends on sulfur concentration and can be written as follows ;γ=176-0.12(T-1480) mN/m・・・10ppmSγ=1530+0.29(T-1480) mN/m・・・110ppmSγ=1380+0.49(T-1480) mN/m・・・250ppmS3.It can be considered that sulfur is adsorbed at the liquid stainless steel surface as ionic state which is calculated from a maximum surface excess quantity.4.Plasma does not effect on the surface tension of liquid stainless steel in the present work.5.Density of liquid stainless steel can be expressed as ;ρ=7.04-0.616(T-1480) g/cm13

在较宽的温度范围内，测定了等离子体对含不同浓度S的SUS 304不锈钢液表面张力的影响，结果表明：1. SUS 304不锈钢液表面张力随S浓度的增加而降低，S起表面活性元素的作用; 2.不锈钢液表面张力的温度系数与S浓度有关，可写成如下; γ=176-0.12（T-1480）mN/m···10ppmSγ=1530+0.29（T-1480）mN/m···110ppmSγ=1380+0.49（T-1480）mN/m···根据表面过剩量的最大值计算出硫在不锈钢液表面的吸附量，可以认为硫是以离子态吸附在不锈钢液表面5.不锈钢液的密度可表示为：ρ=7.04-0.616（T-1480）g/cm ~（13

项目成果

T.Matsumoto: "Surface Tension of Molten Stainless Steels under Plasma Condition"Proc.4th International Conference, High Tempe-rature Capillarity (Sanremo, Italy). March 31-April 3. 135-139 (2004)

T.Matsumoto：“等离子条件下熔融不锈钢的表面张力”Proc.4th 国际会议，高温毛细管现象（意大利圣雷莫）。

H.Fujii: "Surface Tension of Molten Metals under Plasma Conditions"Proc.7th International Welding Symposium. 137-142 (2001)

H.Fujii：“等离子条件下熔融金属的表面张力”Proc.7th International Welding Symposium。

H.Fujii: "Temperature Coefficients of Surface Tension of Molten Pure Iron and Tin Under Plasma Conditions"International Institute of Welding. 212. 1-7 (2001)

H.Fujii：“等离子体条件下熔融纯铁和锡的表面张力的温度系数”国际焊接研究所。

H.Fujii, K.Ueda, T.Matsumoto, K.Nogi: "Surface tension of molten metals under plasma cpnditions"Proc, of 7^<th> Int, Symp., JWS, 2001, Kobw. Vol.1. 137-142 (2001)

H.Fujii、K.Ueda、T.Matsumoto、K.Nogi：“等离子条件下熔融金属的表面张力”Proc，第 7 次 Int，Symp.，JWS，2001，Kobw。

K.Nogi: "Physical Property Measurement pf Liquid Metal"J.J.Weld.Soc.. 72. 467-469 (2003)

K.Nogi：“液态金属的物理特性测量”J.J.Weld.Soc.. 72. 467-469 (2003)