中文摘要：

磁流变液是一种由铁磁性悬浮相、悬浮介质和添加剂组成的分散体材料，具有高的饱和磁化强度，在外磁场作用下能产生高的屈服应力，可用于旋转轴的较高压差密封。设计了一种旋转轴密封装置，该装置包括高性能的永磁体、导磁良好的极靴和旋转轴，注入自制的磁流变液，在轴转速8000r／min时能够密封的氩气压差达到0．3MPa。

英文摘要：

MRF are substances that comprise magnetizable particles dispersed in a liquid ,They can change their flow characteristics under the influence of an applied magnetic field. A device comprising MRF is designed to seal axle of revolution. It was found that the press of the argon sealing by the device is 0.3MPa when the axle revoluting at a speed of 8000r/min.