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为了研究不同类型接触线的磨损行为,对由上引连铸及连续挤压方法制备的Cu-Sn,Cu-Ag和Cu-Mg合金的干滑动磨损行为进行分析。该实验在环块式摩擦磨损试验机上进行。结果表明:由连续氧化物膜组成的表面层对摩擦因数有显著影响。在实验过程中观察到的主要磨损机制有磨粒磨损、粘着磨损、氧化磨损和塑性变形。在较低的摩擦速度和载荷下氧化磨损和磨料磨损是主要的磨损机制;随着载荷和摩擦速度的增加氧化磨损和粘着磨损起主要作用;而在较高的速度和载荷下,塑性变形则成为主要的磨损机制。
In order to study the wear behavior of different types of contact lines, the dry sliding wear behaviors of Cu-Sn, Cu-Ag and Cu-Mg alloys prepared by continuous casting and continuous extrusion were analyzed. The experiment was carried out on a ring-block friction and wear tester. The results show that the surface layer composed of continuous oxide film has a significant effect on the friction coefficient. The main wear mechanisms observed during the experiment were abrasive wear, adhesive wear, oxidative wear and plastic deformation. Oxidative wear and abrasive wear are the main wear mechanisms at lower friction speeds and loads; oxidative wear and adhesive wear play a major role with increasing load and friction speed; while at higher speeds and loads, plastic deformation Become a major wear mechanism.