45钢在永磁体磁场作用下的摩擦磨损特性

Friction and wear characteristics of 45 steel in permanent magnet field

通过增加或减少永磁体的个数控制磁感应强度,分析了磁场对45钢摩擦磨损性能的影响.实验结果表明,在相同的磨损时间和载荷条件下,与无磁场作用下的磨损量相比,有磁场作用时45钢试样的磨损量明显降低,并且随着磁感应强度的增加而减小.微观分析表明,磁场作用下45钢试样的摩擦副表面生成了更多的氧化膜,磁场直接促进摩擦副表面及磨屑的氧化,从而使磨损量减小.

By increasing or decreasing the number of permanent magnets to control the intensity of the magnetic field,the effect of magnetic field on the friction and wear properties of 45 steels is analyzed.Experiment results show that under the same time of wear and load conditions,compared with no magnetic field,the wear of 45 steel samples is significantly lower with a magnetic field,and the wear volume decreases with the increase of magnetic field strength.Microscopic analysis shows that on 45 steel friction pair surface of the sample more oxide films are generated are in the magnetic field.The magnetic field directly promotes the oxidation of friction and wear debris surface therefore reduces the wear.