Abstract
A novel experimental technique for the measurement of surface tension of molten metals has been developed. It is based on the Rayleigh equation which relates frequency and surface tension for an oscillating drop. A systematic study has shown this equation to be valid for a liquid metal droplet levitated electromagnetically in an inert flowing gas with no prior calibration required. It is, therefore, an absolute method. The frequencies of oscillation of droplets of pure iron and nickel in a 6 pct H2-He gas mixture were measured by high speed cinematography. Surface tensions were obtained for temperatures of 1550° to 1780°C for iron and 1475° to 1650°C for nickel.
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M. E. FRAZER, Formerly Graduate Student, Department of Metallurgy and Materials Science, McMaster University, Hamilton, Ontario, Canada.
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Fraser, M.E., Lu, W.K., Hamielec, A.E. et al. Surface tension measurements on pure liquid iron and nickel by an oscillating drop technique. Metall Trans 2, 817–823 (1971). https://doi.org/10.1007/BF02662741
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DOI: https://doi.org/10.1007/BF02662741