复合润滑结构表面在油润滑下的减摩性能*

为研究不同表面处理方式对巴氏合金/45钢配副表面减摩性能的影响，采用热压固化工艺将六方氮化硼封装于表面织构内，制备复合润滑结构表面；在油润滑下进行销-盘磨损试验，使用递归定量分析（Recurrence quantification analysis，RQA）参数划分磨损过程；研究复合润滑结构表面在磨合期和正常磨损期的减摩性能，并与纯织构表面减摩性能进行对比。结果表明：复合润滑结构表面拥有较低摩擦因数和显著减摩效果，其减摩性能优于纯织构表面；相比无织构表面，复合润滑结构表面在磨合期内的平均摩擦因数下降77.9%，在正常磨损期内的平均摩擦因数下降73.5%且磨合期的时长缩减75.0%；较大织构孔径的复合润滑结构表面的减摩效果更好且磨合期更短；纯织构和复合润滑结构表面的减摩效果均在较高速度和载荷下更显著；各试样表面在磨合期的摩擦因数越低，对应进入正常磨损期后就越低。

Anti-friction Performance of Composite Lubrication Structure Surface under Oil-lubrication

In order to study the effect of different surface treatment methods on anti-friction performance of Babbitt alloy/45 steel pair,hexagonal boron nitride was encapsulated in the surface texture,and the composite lubrication structure surfaces were prepared.Pin-disk wear tests were carried out under oil-lubrication,and the wear process was divided using recurrence quantification analysis (RQA) parameter.The anti-friction performance of composite lubrication structure surfaces during running in and normal wear was studied,and compared with that of only texture surface.The results show that the composite lubrication structure surfaces have lower friction coefficient and more significant anti-friction performance,whose anti-friction performance is better than only texture surface.Compared with the no texture surface,the average friction coefficient of the composite lubrication structure surfaces decreases by 77.9% in the running-in period and 73.5% in the normal wear period,and the time in running-in period decreases by 75.0%.The composite lubrication structure surfaces with larger texture pore diameter have better anti-friction performance and shorter running-in period.Both only textured surfaces and composite lubrication structure surfaces have more significant anti-friction performance at a higher speed and load.The lower the friction coefficient of various surfaces in the running-in period,the lower the corresponding friction coefficient after entering the normal wear period.