铁基材料表面粘结润滑涂层摩擦学性能研究

Study on the Tribological Properties of Adhesive Solid Lubricating Coating on Iron-based Materials

为改善铁基粉末冶金材料的摩擦磨损性能,在其表面制备了复合粘结润滑涂层,分别在干摩擦和油润滑条件下进行摩擦磨损试验与分析,结果表明:石墨、二硫化钼两者有协同作用,复合粘结润滑涂层具有良好的润滑减摩性能,油润滑条件下,涂层以石墨含量较多者为佳,干摩擦条件下,涂层以MoS2含量较多者为佳,采用硅烷偶联剂处理后,进一步提高了复合涂层的减摩耐磨性能和承载能力。

The solid lubricating composite coatings were prepared on the surface of iron-based powder metallurgy material, the tribological performances were investigated under oil lubricating and dry friction conditions. The results show that the graphite and MoS2 have synergistic effect, and the solid lubricating composite coatings have good tribological performances. The higher graphite content is beneficial to improve the tribological performances of the materials under the oil lubricating conditions, however under the dry friction conditions, the higher MoS2 content is beneficial to enhance the tribological performances of the materials. The composites exhibit better tribological performances and bearing capacity when the Fe-based surface treated with silane coupling agent.