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Viscosity measurements of molten metal using an improved oscillating crucible method

改良坩堝回転振動法を用いた溶融金属の粘度測定

佐藤 理花*; 西 剛史*; 太田 弘道*; 山野 秀将  

Sato, Rika*; Nishi, Tsuyoshi*; Ota, Hiromichi*; Yamano, Hidemasa

本研究では、振動の周期と対数減衰から最小二乗法を基にした簡易な粘度測定法を開発した。提案手法の再現性を確認するため、溶融ニッケルの粘度を測定した結果、文献で報告されたものと良い一致が見られた。測定誤差は$$pm$$3%であり、実験データは良い再現性を示した。提案した測定手法は高い精度を持つことが示された。

In this study, we developed a simple viscosity measurement method based on the principle of least squares to derive the period and logarithmic decrement of oscillation. To confirm the reproducibility of the proposed method, the viscosity of molten nickel was measured and found to be in good agreement with those reported in the literature. The measurement error was less than $$pm$$3%. Further, the experimental data showed good reproducibility, and the measurements were obtained with high accuracies using the proposed method.

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