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Effect of type and temperature of serum lubricant on VEXLPE wear and friction

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Saikko, Vesa
dc.contributor.author Morad, Omar
dc.contributor.author Viitala, Raine
dc.date.accessioned 2021-01-25T10:15:21Z
dc.date.available 2021-01-25T10:15:21Z
dc.date.issued 2021-04-15
dc.identifier.citation Saikko , V , Morad , O & Viitala , R 2021 , ' Effect of type and temperature of serum lubricant on VEXLPE wear and friction ' , Wear , vol. 470-471 , 203613 . https://doi.org/10.1016/j.wear.2021.203613 en
dc.identifier.issn 0043-1648
dc.identifier.issn 1873-2577
dc.identifier.other PURE UUID: 9615ea74-0809-4239-80ff-56110be8ccee
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/9615ea74-0809-4239-80ff-56110be8ccee
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85099398493&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/54868176/ENG_Saikko_et_al_Effect_of_type_and_temperature_Wear.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/102213
dc.description.abstract Multidirectional tests were carried out to study the influence of the type and temperature of serum lubricant on the wear and friction of vitamin E stabilized, extensively crosslinked ultrahigh molecular weight polyethylene (VEXLPE) against polished CoCr. To minimize the rates of protein denaturation and microbial growth, cold wear tests were performed for the first time so that the serum lubricant was at a refrigerator temperature of 4 °C. The highest wear factors and coefficients of friction were observed at the refrigerator temperature and the lowest at body temperature where the rates of protein denaturation and microbial growth were expected to be at their maximum. The VEXLPE mean wear factor in alpha calf serum (ACS) decreased by two orders of magnitude as the lubricant bulk temperature increased from 4 °C to 37 °C. Thermal analysis indicated that the contact temperature in the pin-on-disk test was less than 2 °C above the lubricant bulk temperature. It appears that a wide range of polyethylene wear rates and coefficients of friction can be obtained depending on the temperature. The type of serum also strongly affected the obtained wear rate at and above 20 °C. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Elsevier BV
dc.relation.ispartofseries Wear en
dc.relation.ispartofseries articlenumber 203613 en
dc.rights openAccess en
dc.title Effect of type and temperature of serum lubricant on VEXLPE wear and friction en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Mechatronics
dc.contributor.department Department of Mechanical Engineering en
dc.identifier.urn URN:NBN:fi:aalto-202101251523
dc.identifier.doi 10.1016/j.wear.2021.203613
dc.date.embargo info:eu-repo/date/embargoEnd/2023-01-07

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