Viscosity measurements of molten stainless-steel containing boron-carbide

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

In this study, the viscosities of the molten SS (SUS316L), 2.5mass%BC-SS, 5.0mass%BC-SS, 7.0mass%BC-SS and 10mass%BC-SS alloys were measured by the oscillating crucible method. The viscosity measurements of the molten SS, 2.5mass%BC-SS and 5mass%BC-SS, 7mass%BC-SS and 10mass%BC-SS alloys were performed in the temperature range from 1613 to 1793 K, from 1713 to 1793 K, and from 1793 to 1823 K, respectively. In these results, the viscosity increased with BC components in the BC components range from 0 to 7.0mass%. The equation of viscosity of molten BC-SS alloys was estimated by using the experimental data of the molten 2.5mass%BC-SS and 5.0mass%BC-SS, and 7.0mass%BC-SS in the temperature range from 1713 to 1793 K. The equation of viscosity of molten SS+BC alloys was determined as follows. y=Ax+B, A=0.0302, B=-9.88110T+2.546, where x is the BC component and T is the temperature. The uncertainty of the equation is 2.5%.