Fe/PTFE复合材料的摩擦诱导磁化及摩擦学性能

研究了Fe/PTFE复合材料在摩擦过程中的摩擦诱导磁化行为,主要探讨了滑动速度、载荷以及填料含量对摩擦磁化的影响.结果表明:随着载荷的增加,复合材料的摩擦诱导磁感应强度呈缓慢上升趋势,载荷超过2.5MPa后会略有下降;而随着摩擦线速度的增加,复合材料的摩擦诱导磁感应强度逐渐变小;此外随着填料含量的增加,复合材料的摩擦诱导磁感应强度逐渐增加.含铁磁性填料的聚合物复合材料的摩擦诱导磁化行为会促进摩擦转移膜的形成和稳定,从而对减小摩擦降低磨损产生有益的影响.

Friction-Induced Magnetization and Tribological Performances of the Fe/PTFE Composites

In this paper, the friction-induced magnetization of the Fe/PTFE composites was studied. The effects of the sliding speed, load and filler content on the friction-induced magnetization of the composites were mainly investigated. The results show that as the load increased, the friction-induced magnetic flux density of the composites increased slowly. And it decreased slightly when the load exceeded 2.5 MPa. With the increase of the sliding speed, the frictioninduced magnetic flux density decreased gradually. In addition, as the filler content increased, the friction-induced magnetic flux density increased. The friction-induced magnetization behavior of the polymeric composites containing ferromagnetic fillers promoted the formation and stability of transfer film, which has a beneficial effect on reducing friction and wear of the composites.