Surface tension of liquid metal under plasma environment
Grant-in-Aid for Scientific Research (B)
|Allocation Type||Single-year Grants |
Metal making engineering
|Research Institution||Osaka University |
NOGI Kiyoshi NOGI,Kiyoshi, 接合科学研究所, 教授 (40029335)
MATSUMOTO Taihei MATSUMOTO,Taihei, 接合科学研究所, 助手 (30294135)
FUJII Hidetoshi FUJII,Hidetoshi, 接合科学研究所, 助教授 (00247230)
|Project Period (FY)
2001 – 2003
Completed (Fiscal Year 2003)
|Budget Amount *help
¥12,800,000 (Direct Cost: ¥12,800,000)
Fiscal Year 2003: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2002: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2001: ¥7,100,000 (Direct Cost: ¥7,100,000)
|Keywords||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 ;
3.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 ;
Report (4 results)
Research Products (10 results)