载荷和转速对铜合金材料摩擦磨损性能的影响

采用MMW-1A摩擦磨损试验机，对比研究干摩擦条件下，载荷和转速对QSn7-0.2、CuZn31Si1和Cu9Ni6Sn三种铜合金材料摩擦磨损性能的影响，采用扫描电子显微镜(SEM)和能谱仪(EDS)分析磨损表面形貌及元素成分，讨论了QSn7-0.2、CuZn31Si1和Cu9Ni6Sn的磨损机理. 结果表明：当载荷和转速增大时，平均摩擦系数和磨损率为Cu9Ni6Sn＜CuZn31Si1＜QSn7-0.2. 当载荷增大时，QSn7-0.2的磨损机理由磨粒磨损逐渐加剧转变为黏着磨损；CuZn31Si1的磨损机理由塑性变形磨损加重并伴有轻微的磨粒磨损转变为磨粒、黏着磨损；Cu9Ni6Sn的磨损机理由轻微的磨粒、塑性变形磨损转变为疲劳磨损. 当转速增大时，QSn7-0.2的磨损机理由塑性变形磨损加重转变为黏着磨损，整个过程伴随着轻微的磨粒磨损；CuZn31Si1的磨损机理由磨粒磨损转变为塑性变形磨损；Cu9Ni6Sn的磨损机理由轻微的磨粒磨损转变为磨粒磨损与塑性变形磨损共存.

Using an MMW-1A friction and wear testing machine, a comparative study was conducted on the effects of load and rotational speed on the friction and wear properties of three copper alloys (QSn7-0.2, CuZn31Si1, and Cu9Ni6Sn) under dry friction conditions. The worn surface morphology and elemental composition were analyzed using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS), and the wear mechanisms of the three copper alloys were discussed. The results show that as the load and rotational speed increase, the average friction coefficient and wear rate follow the order: Cu9Ni6Sn < CuZn31Si1 < QSn7-0.2. When the load increases, the wear mechanism of QSn7-0.2 gradually transitions from aggravated abrasive wear to adhesive wear; the wear mechanism of CuZn31Si1 changes from plastic deformation wear accompanied by slight abrasive wear to a combination of abrasive and adhesive wear; while the wear mechanism of Cu9Ni6Sn shifts from slight abrasive and plastic deformation wear to fatigue wear. When the rotational speed increases, the wear mechanism of QSn7-0.2 changes from aggravated plastic deformation wear to adhesive wear, with slight abrasive wear throughout the process; the wear mechanism of CuZn31Si1 transitions from abrasive wear to plastic deformation wear; and the wear mechanism of Cu9Ni6Sn changes from slight abrasive wear to the coexistence of abrasive wear and plastic deformation wear.

搜集汇总

背景与挑战

背景概述

该数据集研究了载荷和转速对QSn7-0.2、CuZn31Si1和Cu9Ni6Sn三种铜合金材料摩擦磨损性能的影响，揭示了不同条件下材料的摩擦系数、磨损率及磨损机理的变化规律。实验数据表明，Cu9Ni6Sn在载荷和转速增大时表现出最优的摩擦磨损性能。