Effect of environmental gas on surface initiated rolling contact fatigue

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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
Volume8
Issue number1
DOIs
Publication statusPublished - May 22 2013

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All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

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