| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-temperature surface tension measuring device having high operability, capable of performing high-accuracy measurements, without resulting in the instability of measurement results due to heat convection or temperature unevenness in a furnace. Ž<P>SOLUTION: The high-temperature surface tension measuring device includes a crucible 6; an electric furnace 11 for melting a sample in the crucible 6; a reversible motor 12; a ring-shaped gage head 5 suspended in the electric furnace 11 for measuring a surface tension, in contact with a molten surface of the sample; and a measuring part for lowering the position of the crucible 6 from a state in contact with the ring-shaped gauge head 5, and measuring the maximum load during the lowering time. The electric furnace 11 has main characteristics wherein a plurality of heating bodies 10 comprising first heating elements and second heating elements are provided around the crucible, and the first heating elements are arranged vertically around the crucible, at regular intervals to the molten surface, and the second heating elements are arranged in a horizontal direction at the height of the crucible, and a soaking zone is formed, in a range of a prescribed depth from the molten surface of the sample melted by the heating bodies 10. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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