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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References
N. D. Lang, in Solid State Phys. 28:225 (1973).
D. Stroud and M. J. Grimson, J. Non Crystal. Solids 68:231 (1984).
F. Spaepen and R. B. Meyer, Scripta Metallurg. 10:257 (1976).
R. Sangiorgi, G. Caracciolo, and A. Passerone, J. Mater. Sci. 17:2895 (1982).
R. Willnecker, D. M. Herlach, and B. Feuerbacher, Appl. Phys. Lett. 49:1339 (1986).
S. Y. Shiraishi and R. G. Ward, Can. Metallurg. Q. 3:117 (1964).
M. E. Fraser, W.-K. Lu, A. E. Hamielec, and R. Murarka, Metallurg. Trans. 2:817 (1971).
J. Schade, A. McLean, and W. A. Miller, Undercooled Alloy Phases, Proceedings 115th Annual Meeting of TMS-AIME, E. W. Collins and C. C. Koch, eds. (1986), p. 233.
B. J. Keene, K. C. Mills, A. Kasama, A. McLean, and W. A. Miller, Metallurg. Trans. 17B:159 (1986).
K. Nogi, K. Ogino, A. McLean, and W. A. Miller, Metallurg. Trans. 17B:163 (1986).
D. L. Cummings and D. A. Blackburn, J. Fluid Mech. 224:395 (1991).
I. Egry, B. Feuerbacher, G. Lohöfer, and P. Neuhaus, ESA SP-295:257 (1990).
D. M. Herlach, R. Willnecker, and F. Gillessen, ESA SP-222:399 (1984).
L. Liggieri and A. Passerone, High Temp. Technol. 7:82 (1989).
E. Schleip, R. Willnecker, D. M. Herlach, and G. P. Görler, Mater. Sci. Eng. 98:39 (1988).
H. Lamb, Hydrodynamics (Dover, New York, 1945), Chap. IX, Sect. 275.
A. Prosperetti, J. Fluid Mech. 100:333 (1980).
P. L. Marston, J. Acoust. Soc. Am. 67:15 (1980).
W. H. Reid, Q. Appl. Math. 18:86 (1960).
A. D. Myshkis, V. G. Babski, N. D. Kopachevskii, L. A. Slobozhanin, and A. D. Tyuptsov, Low-Gravity Fluid Mechanics (Springer, Berlin, 1987), p. 398.
R. Natarajan and R. A. Brown, Phys. Fluids 29:2788 (1986).
I. Egry, J. Mater. Sci. 26:2997 (1991).
A. V. Oppenheim and R. W. Schafer, Digital Signal Processing (Prentice-Hall, Englewood Cliffs, NJ, 1975), p. 26.
B. J. Keene, Int. Mater. Rev. 1:1 (1988).
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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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DOI: https://doi.org/10.1007/BF00503356