This study reports on the tribological performance of aromatic thermosetting co-polyester (ATSP) and polyether ether ketone (PEEK)-based polymer composite coatings mixed with PTFE filler. The coatings were tested across a wide temperature range from −180 to 110 °C to simulate the environmental temperatures on Titan, Moon, and Mars, which are of particular interest for NASA’s future exploratory missions. An experimental setup was developed to conduct the pin-on-disk experiments under dry sliding conditions and extreme temperature and contact pressure. Transfer film formation and its characteristics were found to play significant roles in the tribological performance, and the characteristics of the film were temperature-dependent. The XPS and SEM analysis indicated the increase of the PTFE content in the transfer film as the temperature decreased to cryogenic conditions. The coefficient of friction did not follow a linear trend with temperature and was minimum at 110 °C and maximum at −180 °C. ATSP coating showed superior performance with lower friction and unmeasurable wear at all temperatures, whereas PEEK coating exhibited maximum wear at 25 °C followed by −180, and 110 °C.

本研究报告了芳香族热固性共聚酯 (ATSP) 和聚醚醚酮 (PEEK) 基聚合物复合涂层与 PTFE 填料混合的摩擦学性能。这些涂层在-180至110°C的宽温度范围内进行了测试，以模拟土卫六、月球和火星上的环境温度，这对美国宇航局未来的探索任务特别感兴趣。开发了一种实验装置，用于在干滑动条件以及极端温度和接触压力下进行销盘实验。研究发现转移膜的形成及其特性对摩擦学性能起着重要作用，并且膜的特性与温度相关。 XPS 和 SEM 分析表明，随着温度降至低温条件，转移膜中的 PTFE 含量增加。摩擦系数不随温度呈线性趋势，在 110 °C 时最小，在 -180 °C 时最大。 ATSP 涂层在所有温度下都表现出优异的性能，具有较低的摩擦力和不可测量的磨损，而 PEEK 涂层在 25 °C 时表现出最大磨损，其次是 -180 和 110 °C。