Fujii, Hidetoshi

Kamai, Masayoshi

Matsumoto, Taihei

Nogi, Kiyoshi

Ueda, Takaharu

A drop tube-type short time microgravity system was developed to measure the surface tension of high temperature melts using an oscillating drop method. The oscillation of a falling droplet was precisely recorded using the combination of a line sensor and a laser backlight. The surface oscillation of the droplet was quite simple during the falling, and consequently, the surface tension was calculated using Rayleigh's equation. The measurements were carried out over a wide temperature range including the undercooling state. The obtained surface tension of copper is expressed as below. γ=1257-0.20 (T-1356) (mN/m) (T:1287K-1998K

Osaka University Knowledge Archive

Surface Tension Measurement of Molten Metal using A Falling Droplet in A Short Drop Tube

https://ir.library.osaka-u.ac.jp/repo/ouka/all/7099/jwri34_02_029.pdf

Surface Tension Measurement of Molten Metal using A Falling Droplet in A Short Drop Tube

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