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Tribological behavior of glass fiber reinforced-PA66 in contact with carbon steel under high contact pressure, sliding and grease lubricated conditions
Wear ( IF 5 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.wear.2020.203383
Takeshi Kunishima , Yasuharu Nagai , Takanori Kurokawa , Gaëtan Bouvard , Jean-Christophe Abry , Vincent Fridrici , Phillippe Kapsa

Abstract Polyamide 66 is widely used for sliding parts, such as resin worm gear. Glass fibers are usually added to increase its strength. In this study, the tribological behavior of glass fiber reinforced-polyamide 66 composite in contact with carbon steel under high contact pressure, sliding, and grease lubricated conditions is studied. Measurement of mechanical properties and SEM observations of composite sliding surfaces after different sliding cycle numbers indicate that sliding induces characteristic damage of the surface (peeled off fibers and scratching of polyamide) and a degradation in mechanical properties. These lead to an increase in friction and creep of the composite. The wear effect increases with the increase in sliding cycles, and the initial orientation of the fibers in the composite sliding surface has significant effects on the wear of the steel counterpart. The contribution of each phenomenon to the tribological behavior is discussed. The damage to the composite surface and the increase in contact temperature due to sliding have great effects on the tribological properties compared to the presence of wear debris in grease and wear on the steel. The effects of the hardness of the steel on the tribological properties are investigated, and it is found that wear of the composite is reduced by using softer steels.

中文翻译:

玻璃纤维增​​强-PA66在高接触压力、滑动和脂润滑条件下与碳钢接触的摩擦学行为

摘要 聚酰胺66广泛用于滑动部件,如树脂蜗轮。通常添加玻璃纤维以增加其强度。在这项研究中,研究了玻璃纤维增​​强聚酰胺 66 复合材料在高接触压力、滑动和油脂润滑条件下与碳钢接触的摩擦学行为。不同滑动循环次数后复合材料滑动表面的机械性能测量和 SEM 观察表明,滑动会引起表面的特征性损伤(剥离纤维和聚酰胺划伤)和机械性能的下降。这些导致复合材料的摩擦和蠕变增加。磨损效应随着滑动次数的增加而增加,复合材料滑动表面中纤维的初始取向对钢对应物的磨损有显着影响。讨论了每种现象对摩擦学行为的贡献。与润滑脂中存在磨屑和钢上的磨损相比,复合材料表面的损坏和由于滑动导致的接触温度升高对摩擦学性能有很大影响。研究了钢的硬度对摩擦学性能的影响,发现使用较软的钢可降低复合材料的磨损。与润滑脂中存在磨屑和钢上的磨损相比,复合材料表面的损坏和由于滑动导致的接触温度升高对摩擦学性能有很大影响。研究了钢的硬度对摩擦学性能的影响,发现使用较软的钢可降低复合材料的磨损。与润滑脂中存在磨屑和钢上的磨损相比,复合材料表面的损坏和由于滑动导致的接触温度升高对摩擦学性能有很大影响。研究了钢的硬度对摩擦学性能的影响,发现使用较软的钢可降低复合材料的磨损。
更新日期:2020-09-01
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