Effect of roughness and sliding speed on the wear and friction of ultra-high molecular weight polyethylene

T.S. Barrett, Gwidon Stachowiak, A.W. Batchelor

    Research output: Contribution to journalArticle

    88 Citations (Scopus)

    Abstract

    The friction and wear of ultra-high molecular weight polyethylene (UHMWPE) pins sliding against a stainless steel disc were measured for sliding speeds ranging from 1.25 to 10 m s-1 and disc surface roughnesses R(a) from 0.07 to 0.53-mu-m ms-1. Frictional heating was controlled by air jets and surface temperature measured with an IR pyrometer. It was found that the wear of UHMWPE is critically dependent on surface temperature and that, when the temperature exceeds a critical value, wear proceeds in a series of discrete steps caused by the sudden loss of a molten or softened layer of polymer. Wear was also influenced by surface roughness. An optimum surface roughness, ie. a minimum of wear was found at low and medium sliding speeds. At the highest speed tested, however, the influence of roughness on wear rate was much less distinct. Scanning electron photomicrographs of worn pins and disc surfaces revealed evidence of melting by UHMWPE at high sliding speeds and abrasion at high surface roughnesses. Transfer films on disc surfaces were limited to isolated deposits of polymer wear particles.
    Original languageEnglish
    Pages (from-to)331-350
    JournalWear
    Volume153
    DOIs
    Publication statusPublished - 1992

    Fingerprint

    Ultrahigh molecular weight polyethylenes
    sliding
    polyethylenes
    molecular weight
    roughness
    friction
    Surface roughness
    Wear of materials
    Friction
    surface roughness
    surface temperature
    Polymers
    photomicrographs
    Pyrometers
    pyrometers
    air jets
    abrasion
    Stainless Steel
    polymers
    ultra-high molecular weight polyethylene

    Cite this

    Barrett, T.S. ; Stachowiak, Gwidon ; Batchelor, A.W. / Effect of roughness and sliding speed on the wear and friction of ultra-high molecular weight polyethylene. In: Wear. 1992 ; Vol. 153. pp. 331-350.
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    abstract = "The friction and wear of ultra-high molecular weight polyethylene (UHMWPE) pins sliding against a stainless steel disc were measured for sliding speeds ranging from 1.25 to 10 m s-1 and disc surface roughnesses R(a) from 0.07 to 0.53-mu-m ms-1. Frictional heating was controlled by air jets and surface temperature measured with an IR pyrometer. It was found that the wear of UHMWPE is critically dependent on surface temperature and that, when the temperature exceeds a critical value, wear proceeds in a series of discrete steps caused by the sudden loss of a molten or softened layer of polymer. Wear was also influenced by surface roughness. An optimum surface roughness, ie. a minimum of wear was found at low and medium sliding speeds. At the highest speed tested, however, the influence of roughness on wear rate was much less distinct. Scanning electron photomicrographs of worn pins and disc surfaces revealed evidence of melting by UHMWPE at high sliding speeds and abrasion at high surface roughnesses. Transfer films on disc surfaces were limited to isolated deposits of polymer wear particles.",
    author = "T.S. Barrett and Gwidon Stachowiak and A.W. Batchelor",
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    Effect of roughness and sliding speed on the wear and friction of ultra-high molecular weight polyethylene. / Barrett, T.S.; Stachowiak, Gwidon; Batchelor, A.W.

    In: Wear, Vol. 153, 1992, p. 331-350.

    Research output: Contribution to journalArticle

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    T1 - Effect of roughness and sliding speed on the wear and friction of ultra-high molecular weight polyethylene

    AU - Barrett, T.S.

    AU - Stachowiak, Gwidon

    AU - Batchelor, A.W.

    PY - 1992

    Y1 - 1992

    N2 - The friction and wear of ultra-high molecular weight polyethylene (UHMWPE) pins sliding against a stainless steel disc were measured for sliding speeds ranging from 1.25 to 10 m s-1 and disc surface roughnesses R(a) from 0.07 to 0.53-mu-m ms-1. Frictional heating was controlled by air jets and surface temperature measured with an IR pyrometer. It was found that the wear of UHMWPE is critically dependent on surface temperature and that, when the temperature exceeds a critical value, wear proceeds in a series of discrete steps caused by the sudden loss of a molten or softened layer of polymer. Wear was also influenced by surface roughness. An optimum surface roughness, ie. a minimum of wear was found at low and medium sliding speeds. At the highest speed tested, however, the influence of roughness on wear rate was much less distinct. Scanning electron photomicrographs of worn pins and disc surfaces revealed evidence of melting by UHMWPE at high sliding speeds and abrasion at high surface roughnesses. Transfer films on disc surfaces were limited to isolated deposits of polymer wear particles.

    AB - The friction and wear of ultra-high molecular weight polyethylene (UHMWPE) pins sliding against a stainless steel disc were measured for sliding speeds ranging from 1.25 to 10 m s-1 and disc surface roughnesses R(a) from 0.07 to 0.53-mu-m ms-1. Frictional heating was controlled by air jets and surface temperature measured with an IR pyrometer. It was found that the wear of UHMWPE is critically dependent on surface temperature and that, when the temperature exceeds a critical value, wear proceeds in a series of discrete steps caused by the sudden loss of a molten or softened layer of polymer. Wear was also influenced by surface roughness. An optimum surface roughness, ie. a minimum of wear was found at low and medium sliding speeds. At the highest speed tested, however, the influence of roughness on wear rate was much less distinct. Scanning electron photomicrographs of worn pins and disc surfaces revealed evidence of melting by UHMWPE at high sliding speeds and abrasion at high surface roughnesses. Transfer films on disc surfaces were limited to isolated deposits of polymer wear particles.

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    JO - Wear

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