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

Stainless steel
Wear of materials
Friction
Ionic strength
Molecular structure
Proteins
Water

Keywords

  • Water based lubrication
  • hydrophobins
  • biolubrication

Cite this

Hakala, T. J., Wählisch, F., Laaksonen, P., Ahlroos, T., Helle, A., Linder, M., ... 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.
Hakala, Timo J. ; Wählisch, F. ; Laaksonen, Päivi ; Ahlroos, Tiina ; Helle, Aino ; Linder, Markus ; Bennewitz, R. ; Holmberg, Kenneth. / Friction and wear behaviour of hydrophobin films under sliding on stainless steel. Paper presented at 15th Nordic Symposium on Tribology, NORDTRIB 2012, Trondheim, Norway.
@conference{5244ed5e36b2490ababe3239759ab782,
title = "Friction and wear behaviour of hydrophobin films under sliding on stainless steel",
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",
keywords = "Water based lubrication, hydrophobins, biolubrication",
author = "Hakala, {Timo J.} and F. W{\"a}hlisch and P{\"a}ivi Laaksonen and Tiina Ahlroos and Aino Helle and Markus Linder and R. Bennewitz and Kenneth Holmberg",
note = "Project code: 34126 Project code: 41202; 15th Nordic Symposium on Tribology, NORDTRIB 2012, NORDTRIB 2012 ; Conference date: 12-06-2012 Through 15-06-2012",
year = "2012",
language = "English",

}

Hakala, TJ, 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, 12/06/12 - 15/06/12, .

Friction and wear behaviour of hydrophobin films under sliding on stainless steel. / Hakala, Timo J.; Wählisch, F.; Laaksonen, Päivi; Ahlroos, Tiina; Helle, Aino; Linder, Markus; Bennewitz, R.; Holmberg, Kenneth.

2012. Paper presented at 15th Nordic Symposium on Tribology, NORDTRIB 2012, Trondheim, Norway.

Research output: Contribution to conferenceConference articleScientificpeer-review

TY - CONF

T1 - Friction and wear behaviour of hydrophobin films under sliding on stainless steel

AU - Hakala, Timo J.

AU - Wählisch, F.

AU - Laaksonen, Päivi

AU - Ahlroos, Tiina

AU - Helle, Aino

AU - Linder, Markus

AU - Bennewitz, R.

AU - Holmberg, Kenneth

N1 - Project code: 34126 Project code: 41202

PY - 2012

Y1 - 2012

N2 - 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

AB - 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

KW - Water based lubrication

KW - hydrophobins

KW - biolubrication

M3 - Conference article

ER -

Hakala TJ, Wählisch F, Laaksonen P, Ahlroos T, Helle A, Linder M et al. Friction and wear behaviour of hydrophobin films under sliding on stainless steel. 2012. Paper presented at 15th Nordic Symposium on Tribology, NORDTRIB 2012, Trondheim, Norway.