Wear mechanisms of ptfe in humidified hydrogen gas

Kazuhiro Nakashima, Carlos Morillo, Yoshie Kurono, Yoshinori Sawae, Joichi Sugimura

    研究成果: 書籍/レポート タイプへの寄稿会議への寄与

    2 被引用数 (Scopus)


    PTFE is used as sealing material of machine elements in hydrogen utilizing machine systems, such as fuel cell vehicles and related infrastructures. It is necessary to know the tribological property of sealing materials in hydrogen gas to realize safety and reliability of machine elements operated in hydrogen environment. In this study, humidity in gases was focused on and its effects on the friction and wear of rubbing pair of PTFE pin and AISI 316L disk was investigated in pin-on-disk wear apparatus. The result indicated that the humidity in hydrogen gas had little effect on the friction coefficient between PTFE and AISI 316L. However, the specific wear rate of unfilled PTFE was clearly affected by the humidity. The amount of PTFE transfer film formed on the stainless surface gradually decreased with decreasing the humidity in hydrogen gas. The similar results could be obtained in inert argon gas as well. Water molecules remained in gaseous environments would be included in the formation process of PTFE transfer film affect on formation of PTFE transfer film. The humidity in hydrogen gas should be regulated to ensure the tribological behavior of the PTFE/stainless sliding pair being used in the hydrogen environment.

    ホスト出版物のタイトルASME/STLE 2011 International Joint Tribology Conference, IJTC 2011
    出版ステータス出版済み - 2011
    イベントASME/STLE 2011 International Joint Tribology Conference, IJTC 2011 - Los Angeles, CA, 米国
    継続期間: 10月 24 201110月 26 2011


    名前American Society of Mechanical Engineers, Tribology Division, TRIB


    その他ASME/STLE 2011 International Joint Tribology Conference, IJTC 2011
    CityLos Angeles, CA

    !!!All Science Journal Classification (ASJC) codes

    • 機械工学
    • 材料科学(全般)


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