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るつぼ回転粘度法による溶融Ni基超合金の粘度測定

Viscosity measurements of molten Ni-based superalloys by the oscillating crucible method

松本 早織*; 西 剛史*; 太田 弘道*; 堀 亜由美*; 林 喜一郎*; 山野 秀将   

Matsumoto, Saori*; Nishi, Tsuyoshi*; Ota, Hiromichi*; Hori, Ayumi*; Hayashi, Kiichiro*; Yamano, Hidemasa

本研究では、るつぼ回転粘度計を用いてNi基超合金の粘度を測定した。今回測定した温度範囲において、いずれの試料も温度上昇に伴い粘度が減少するArrhenius型の良好な温度依存性を示した。また、添加されている元素の中でCoの含有量が多いほど粘度が小さい傾向が見られた。

In this study, the viscosity of the molten Ni-based superalloys were measured by the oscillating crucible method. When the logarithm of the viscosity was plotted against the inverse temperature (Arrhenius-type plot), all alloys showed a good Arrhenius-type linearity over the temperature range investigated. It was also found that the viscosities of molten Ni-based superalloys decreased with increasing the Co contents.

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