Influence of soft surface modification on rolling contact fatigue strength of machine element

A. Yoshida, M. Fujii

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Various surface modification methods have been employed in order to improve the tribological performance of machine elements. In this work, electroless Ni-P alloy plating and sulfurizing treatments were employed, and the surface modified steel rollers and ball bearings were fatigue-tested under a pure or free rolling contact condition. The fatigue lives of both rollers and bearings were improved by these surface modifications. The contact pressure and subsurface stresses of the surface modified rollers and bearings were analyzed. The reason why the rolling fatigue strengths of surface modified rollers and bearings were higher than those of the non-coated ones would be due to the smaller contact pressure and subsurface stresses by the smaller elasticity as well as the conformity of the plated layer.

Original languageEnglish
Pages (from-to)837-847
Number of pages11
JournalTribology International
Volume35
Issue number12
DOIs
Publication statusPublished - Dec 2002

Keywords

  • Rolling contact fatigue
  • Stress analysis
  • Surface modification

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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