Equation to estimate the surface tensions of stainless steels

• Published in: Journal of materials science Vol. 40; no. 9-10; pp. 2201 - 2205
• Main Authors: SU, Y, LI, Z, MILLS, K. C
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Heidelberg Springer 01.05.2005; Springer Nature B.V
• Subjects: Aluminum; Applied sciences; Austenitic stainless steels; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Ferritic stainless steels; Fluid surfaces and fluid-fluid interfaces; Materials science; Mathematical analysis; Metals. Metallurgy; Oxygen content; Physics; Stainless steel; Stainless steels; Surface energy (surface tension, interface tension, angle of contact, etc.); Surface tension; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Temperature dependence; Austenitic stainless steel; Ferritic stainless steel; Liquid alloys; Fluid-fluid interfaces; Theoretical study; Surface tension; Equations
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-005-1933-8

Surface tension (γ) data for both austenitic and ferritic stainless steels have been analysed to derive an equation which will apply to the surface tensions of all stainless steels. It was assumed that the Al content was sufficient to hold the soluble oxygen content down to 5 ppm. The surface tensions of stainless steels can be expressed in terms of two variables, temperature and wt% sulphur:The calculated surface tensions were found to be within 3% of the measured values and values for the temperature dependence (dγ/dT) values were similar to the measured data.