Polymer transfer film formation from cryogenic to elevated temperatures  

作　　者：Kian BASHANDEH Vasilis TSIGKIS Ahmad AMIRI Pixiang LAN Andreas A.POLYCARPOU 

机构地区：[1]J.Mike Walker’66 Department of Mechanical Engineering,Texas A&M University,College Station,Texas 77843,USA [2]ATSP Innovations,Inc.,Houston,Texas 77055,USA [3]Russell School of Chemical Engineering,The University of Tulsa,Tulsa,Oklahoma 74104,USA [4]Department of Mechanical Engineering,The University of Tulsa,Tulsa,Oklahoma 74104,USA

出　　处：《Friction》2024年第9期2018-2032,共15页摩擦（英文版）

基　　金：supported by Small Business Innovation Research(SBIR)Phase II contract No.#80NSSC20C0180.

摘　　要：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℃ 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℃ and maximum at−180℃.ATSP coating showed superior performance with lower friction and unmeasurable wear at all temperatures,whereas PEEK coating exhibited maximum wear at 25℃ followed by−180,and 110℃.

关 键 词：transfer film CRYOGENIC high temperature tribology space tribology polymer coating 

分 类 号：TH117[机械工程—机械设计及理论]