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    STP1548

    Rolling Contact Fatigue Testing of Stainless Steel and Cobalt-based Components Using Water as the Lubricant

    Published: 01 August 2012


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    Abstract

    The current paper presents the results obtained from testing of high-nitrogen martensitic stainless steels and a cobalt-based alloy using an accelerated rolling contact fatigue tester, the Polymet test rig. Although demineralised water is not a good lubricant in terms of, for example, its capability of building up a sufficient film thickness, it was possible to rank the tested alloys according to their performance. Corrosion products were observed on the over-rolled tracks, and the materials' resistance to pitting corrosion was assessed.

    Keywords:

    nitrogen stainless steel, tool steel, AISI 440C, cobalt, Polymet, rolling contact fatigue, hybrid bearing, cyclic potentiodynamic polarisation, pitting corrosion, hard water


    Author Information:

    Sherif, Mohamed Y.
    SKF Engineering & Research Centre, Nieuwegein, MT

    Han, Bo
    SKF Engineering & Research Centre, Nieuwegein, MT

    Kahlman, Lars
    SKF Sverige AB, Gothenburg,


    Committee/Subcommittee: A01.28

    DOI: 10.1520/STP104603