STP769

    Dry Sliding Wear Studies of Nickel-Phosphorus and Chromium Coatings on 0–2 Tool Steel

    Published: Jan 1982


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    Abstract

    An investigation of dry sliding wear of electrodeposited nickel-phosphorus and chromium coatings on 0–2 tool steel against 52100 steel has been carried out. Wear and friction measurements were made in an argon atmosphere under dry sliding conditions at 0.2 m/s sliding speed and a load of 10 N. Among the materials studied, significant differences in wear rates were found that depended upon the nature of the coating. This work has determined the wear rates and has examined factors involved in the wear process for nickel-alloy coatings produced using electroless, direct-current, and pulsed-current plating, and chromium coatings. Thermal treatments after plating affected wear performance and indentation hardness. In all the nickel-alloy coatings, a laminar morphology was found that varied with the deposition method and was affected by thermal treatment. The wear test system used in this research was designed to examine flat specimens using a rotating 52100 steel ring as the counterface. The system was computer-interfaced and controlled, which permitted real-time measurements of wear and friction coefficient. These features made the system particularly suitable for studying the wear of thin metal coatings.

    Keywords:

    coatings, wear, wear testing, metallic glasses, electrodeposition, nickelphosphorus, steel, chromium


    Author Information:

    Ruff, AW
    Group Leader, Metallurgy Division, and Chemical Stability and Corrosion Division, Center for Materials Science, National Bureau of Standards, Washington, D.C.

    Lashmore, DS
    Group Leader, Metallurgy Division, and Chemical Stability and Corrosion Division, Center for Materials Science, National Bureau of Standards, Washington, D.C.


    Paper ID: STP29370S

    Committee/Subcommittee: G02.30

    DOI: 10.1520/STP29370S


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