导电流体在水平磁场中的粘度

Viscosity of Liquid Conductor in Horizontal Magnetic Field

采用回转振荡法,在向导电流体所在空间引入水平可调永磁磁场的条件下,测量研究了导电流体———液态汞(20℃)的粘度.结果表明,液态汞的粘度随磁场强度的增大而增加,二者呈光滑的抛物线关系.液态汞在磁场中粘度增加的现象与磁场导致的固态导电物质的磁粘滞效应现象相似,可以用磁场对带电运动粒子的作用简单直观地解释液态汞在磁场中粘度增加的机理.这些研究成果为研究磁场直拉硅单晶生长提供了理论依据.

The viscosity of liquid Hg is studied in the horizontal permanent magnets magnetic field at 20℃ using the oscillating cup method. Experimental results show that the viscosity of the liquid Hg increases with the increase of magnetic field strength. The relationship of viscosity and magnetic field strength is parabolic. The viscosity increase of Hg in the magnetic field is similar to that of the solid conductor. The change in viscosity can be explained by the effect of magnetic field on the charged particles. These experimental results provide theoretical foundation for the growth of CZSi in the magnetic field.