Friction and wear behaviour of hydrophobin films under sliding on stainless steel

Timo J. Hakala, F. Wählisch, Päivi Laaksonen, Tiina Ahlroos, Aino Helle, Markus Linder, R. Bennewitz, Kenneth Holmberg

    Research output: Contribution to conferenceConference articleScientificpeer-review

    Abstract

    Hydrophobins are small amphiphilic proteins that adhere and form highly hydrated layers on stainless steel surfaces. These layers may contain 40 - 60 % of bound water depending on the conditions such as ionic strength and molecular structure of hydrophobin. In sliding contacts of stainless steel ball on stainless steel disc the friction properties did not depend on load when surfaces were lubricated by hydrophobins. Increased sliding velocity occasionally led to decrease in friction when surfaces were lubricated with the glycosylated hydrophobins in buffer solution. This effect may be caused by tribofilm formation on the worn surface of the stainless steel sphere during sliding
    Original languageEnglish
    Publication statusPublished - 2012
    MoE publication typeNot Eligible
    Event15th Nordic Symposium on Tribology, NORDTRIB 2012 - Trondheim, Norway
    Duration: 12 Jun 201215 Jun 2012
    Conference number: 15

    Conference

    Conference15th Nordic Symposium on Tribology, NORDTRIB 2012
    Abbreviated titleNORDTRIB 2012
    CountryNorway
    CityTrondheim
    Period12/06/1215/06/12

      Fingerprint

    Keywords

    • Water based lubrication
    • hydrophobins
    • biolubrication

    Cite this

    Hakala, T. J., Wählisch, F., Laaksonen, P., Ahlroos, T., Helle, A., Linder, M., Bennewitz, R., & Holmberg, K. (2012). Friction and wear behaviour of hydrophobin films under sliding on stainless steel. Paper presented at 15th Nordic Symposium on Tribology, NORDTRIB 2012, Trondheim, Norway.