Effect of environmental gas on surface initiated rolling contact fatigue

Hiroyoshi Tanaka, Tatsuhiko Morofuji, Kakeru Enami, Masaaki Hashimoto, Joichi Sugimura

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)


    This paper describes an exploratory study on the effects of temperature on the formation of oxide film and rolling contact fatigue life in hydrogen, argon and air. Rolling contact fatigue tests were conducted at 333 K and 363 K by using a three-ball-on-disk type apparatus. The rolling contact fatigue life in hydrogen was shorter than that in argon, and life in air was the longest. Relationship was found between fatigue life and hydrogen concentration in steel. Cross sections of the specimens show that iron oxide grew to larger grain size in the subsurface in hydrogen environment, which may have resulted in shorter fatigue life. It was also found that fatigue failure occurs on ball surface in hydrogen at 363 K.

    Original languageEnglish
    Pages (from-to)90-96
    Number of pages7
    JournalTribology Online
    Issue number1
    Publication statusPublished - 2013

    All Science Journal Classification (ASJC) codes

    • Surfaces, Coatings and Films


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