Abstract
Polymers with self-lubricating properties have been employed in various applications as bearing components and tribological surfaces, particularly where the use of liquid lubricant is infeasible, such as space-related applications. This study reports on tribological solutions for extreme temperature ranging from −196 to 300 °C, which simulates extreme operating conditions that bearing materials in space will encounter. Tribological performance of three polymeric-based coatings, namely ATSP-, PEEK-, and Fluoropolymer-based coatings was evaluated. Inspired by the benefit of transfer layer, we deposited the coatings on both pins and disks to simulate polymer sliding on pre-deposited “transfer layer.” The ATSP-based coatings showed excellent tribological performance with low coefficient of friction and unmeasurable wear within a wide temperature range and constant contact pressure of 1 MPa.
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