High temperature solid-lubricating materials: A review

This paper provides a review on the current research developments in high temperature solid-lubricating materials. We first briefly discuss fundamental of high temperature solid-lubricating materials, including design strategies of a low friction coefficient, a high wear resistance, a wide environment range, and how to construct high temperature solid-lubricating materials. And then the review highlights progress in the design and exploration of high temperature solid-lubricating coatings (monolithic coatings, multiphase coatings and self-adaptive coatings) and composites (metal, intermetallic and ceramic matrices high temperature solid-lubricating composites). Finally, we shortly introduce practical applications and trends of high temperature solid-lubricating materials in the future. These developments offer new avenues to both intensify the understanding of high temperature tribology and expand the diversity of practical applications.