在发动机轴承上的聚合物覆盖的磨损性能评估
Ismail Ozdemir1, Bahattin Bulbul2, Ugur Kiracbedel2
1Materials and Surface Engineering Group, Chemnitz University of Technology, Erfenschlager Str. 73, 09125 Chemnitz, Germany.
Materials (Basel, Switzerland)
|August 10, 2024
概括
一个新的聚合物覆盖层在极端条件下显著减少发动机轴承的摩擦和磨损. 这种先进的涂层与当前的选项相比,提供了更高的性能,提高了耐用性,并防止过早故障.
科学领域:
- 部落学和材料科学 材料科学
- 机械工程 机械工程
- 表面工程是什么?表面工程是什么?
背景情况:
- 现代发动机轴承面临混合滑,低粘度油和启停操作的挑战,导致潜在的金属对金属接触和故障.
- 这些条件需要能够承受过度负荷并保持滑完整性的先进材料.
- 正在探索聚合物覆盖,以提高发动机轴承表面的性能和寿命.
研究的目的:
- 为了研究两种聚合物覆盖的摩擦和耐磨性,应用于发动机轴承表面.
- 在模拟极端条件下,将新开发的聚合物覆盖层 (NDP) 与传统聚合物覆盖层 (CPO) 的性能进行比较.
- 确定有助于聚合物覆盖在减少摩擦和磨损方面的有效性的主要因素.
主要方法:
- 通过硬化工艺,对传统发动机轴承表面涂上了两个约13微米厚的聚合物覆盖层.
- 摩擦和磨损测试是在30N负载下使用针对圆盘设置进行的.
- 测量了每个覆盖类型的摩擦系数 (COF) 和磨损体积损失.
主要成果:
- 新开发的聚合物涂层 (NDP,PAI基涂层) 具有较低的摩擦系数 (0.155) 和磨损体积损失 (0.010 cm3).
- 传统的聚合物覆盖层 (CPO) 显示出明显更高的值,COF为0.378和磨损体积损失为0.024cm3.
- 新开发计划的有效性归因于优化的组件比率和在柜台表面形成有利的转移膜.
结论:
- 新开发的聚合物覆盖层 (NDP) 与传统的聚合物覆盖层 (CPO) 相比,具有更好的摩擦和磨损性能.
- 优化聚合物涂料的配方,包括固体滑剂和耐磨添加剂,对于增强的 Tribological 特性至关重要.
- 转移膜的形成是实现聚合物涂层发动机轴承低摩擦和耐磨性的关键因素.
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