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Surface tension measurements of liquid metals using levitation, microgravity, and image processing

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Abstract

An improved method for measuring the surface tension of liquid metals is proposed. It makes use of the electromagnetic levitation technique for levitating a liquid metal droplet and of digital image processing to evaluate the surface oscillations of the droplet. The oscillation frequencies determine the surface tension. This paper contains a discussion of the theoretical background and a description of the experimental setup. In addition, preliminary results on FeNi samples in 1g and microgravity are presented.

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Egry, I., Lohöfer, G., Neuhaus, P. et al. Surface tension measurements of liquid metals using levitation, microgravity, and image processing. Int J Thermophys 13, 65–74 (1992). https://doi.org/10.1007/BF00503356

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