期刊
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
卷 31, 期 6, 页码 1585-1589出版社
MINERALS METALS MATERIALS SOC
DOI: 10.1007/s11661-000-0168-1
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The surface tension of molten silicon was measured using the electromagnetic levitation method under microgravity. The atmosphere was Ar-3 pet H-2 purified by Pt asbestos and magnesium perchlorate. The partial oxygen pressure is estimated to be less than 1.1 x 10(-14) Pa. The spherical droplet shape was controlled by changing the current ratio between a quadrupole coil and a dipole coil. The surface tension of molten silicon can be expressed by the equation gamma = 735 - 0.074 (T - 1687) where gamma is the surface tension (in mN/m) and T is the temperature (in K). The value was measured over a wide range of temperatures, from 230 K below the melting point (1687 K) to 1890 K. The scatter of the measured surface-tension values is much less than that measured by conventional methods.
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