Wear behavior of polymeric sealing material in gaseous hydrogen

Yoshinori Sawae, A. Yamaguchi, K. Nakashima, T. Murakami, Joichi Sugimura

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Wear behavior of polymeric sealing material sliding against austenitic stainless steel was evaluated within gaseous hydrogen atmosphere to ensure the durability and longevity of polymeric seals used in fuel cell vehicles and related hydrogen infrastructures. In this study, unfilled polytetrafluoroethylene (PTFE) was considered as a representative polymeric material for seals and its wear behavior was evaluated by using 3pin-on- disk wear tester coupled with the environmental test chamber. Results indicated that the specific wear rate of unfilled PTFE became significantly smaller in gaseous hydrogen compared with that in air. However, the specific wear rate further decreased in argon gas. Optical microscopy and XPS analysis of the disk specimen surface indicated that the wear behavior of PTFE highly depended on the transfer film formation on the sliding counterface. Notable influences of gaseous hydrogen on the formation process of PTFE transfer film and subsequent wear behavior could be postulated from XPS spectra.

    Original languageEnglish
    Title of host publication2008 Proceedings of the STLE/ASME International Joint Tribology Conference, IJTC 2008
    Pages15-17
    Number of pages3
    Publication statusPublished - 2009
    Event2008 STLE/ASME International Joint Tribology Conference, IJTC 2008 - Miami, FL, United States
    Duration: Oct 20 2008Oct 22 2008

    Other

    Other2008 STLE/ASME International Joint Tribology Conference, IJTC 2008
    CountryUnited States
    CityMiami, FL
    Period10/20/0810/22/08

    All Science Journal Classification (ASJC) codes

    • Fluid Flow and Transfer Processes
    • Process Chemistry and Technology
    • Mechanical Engineering

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