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    Results from a U.K. Interlaboratory Project on Dry Sliding Wear of Alumina

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    Eleven U.K. laboratories performed dry pin-on-disk wear tests on a 95% alumina ceramic under a load of 40 N and at a sliding speed of 0.1 ms-1. Specimens were supplied with polished and ground finishes; the ground finish gave higher wear and lower friction than the polished specimens. Subsidiary experiments showed a large effect of humidity on wear with high wear rates at low humidity levels. The measure of wear with the best repeatability was scar size measurements at 5%, and the worst was mass loss measurements at 42% (expressed as ratios of 95% confidence intervals to the mean values). The reproducibility of friction measurements was 14%.


    wear, friction, round robin, alumina, ceramic, reproducibility, repeatability, humidity

    Author Information:

    Gee, MG
    National Physical Laboratory, Teddington, Middlesex,

    Committee/Subcommittee: G02.30

    DOI: 10.1520/STP23862S