Influence of topography on the running-in of water-lubricated silicon carbide journal bearings

Peter Andersson, Jari Juhanko, Antti-Pekka Nikkilä, Pekka Lintula

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)

Abstract

The study summarizes an experimental investigation on the running-in of water-lubricated journal bearings and shaft sleeves made of 10 different commercial silicon carbide materials. In each test the sliding surfaces became polished and the sliding conditions were transformed from boundary or mixed lubrication to full film lubrication within a rather short sliding distance. The initial surface roughness strongly influenced on the initial dynamic coefficient of friction, and on the running-in distance required to reduce the coefficient of friction from a level typical of boundary or mixed lubrication to a level typical of full film lubrication. The initial surface roughness of the shaft sleeve was more slowly removed than that of the bearing, and therefore the surface quality of the shaft rather than that of the bearing governed the running-in distance required for the polishing. The initial surface roughness of the bearing practically only influenced the dynamic coefficient of friction at the beginning of the running-in procedure. In comparison with the influence of the surface roughness variations, the material properties of the silicon carbides studied has a limited influence on the running-in behaviour,which was principally related to a tribochemical surface polishing process.
Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalWear
Volume201
Issue number1-2
DOIs
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

Fingerprint

journal bearings
Bearings (structural)
Journal bearings
Silicon carbide
silicon carbides
Topography
Lubrication
lubrication
topography
Surface roughness
surface roughness
Water
coefficient of friction
boundary lubrication
sliding
Friction
sleeves
Polishing
water
polishing

Cite this

Andersson, Peter ; Juhanko, Jari ; Nikkilä, Antti-Pekka ; Lintula, Pekka. / Influence of topography on the running-in of water-lubricated silicon carbide journal bearings. In: Wear. 1996 ; Vol. 201, No. 1-2. pp. 1-9.
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title = "Influence of topography on the running-in of water-lubricated silicon carbide journal bearings",
abstract = "The study summarizes an experimental investigation on the running-in of water-lubricated journal bearings and shaft sleeves made of 10 different commercial silicon carbide materials. In each test the sliding surfaces became polished and the sliding conditions were transformed from boundary or mixed lubrication to full film lubrication within a rather short sliding distance. The initial surface roughness strongly influenced on the initial dynamic coefficient of friction, and on the running-in distance required to reduce the coefficient of friction from a level typical of boundary or mixed lubrication to a level typical of full film lubrication. The initial surface roughness of the shaft sleeve was more slowly removed than that of the bearing, and therefore the surface quality of the shaft rather than that of the bearing governed the running-in distance required for the polishing. The initial surface roughness of the bearing practically only influenced the dynamic coefficient of friction at the beginning of the running-in procedure. In comparison with the influence of the surface roughness variations, the material properties of the silicon carbides studied has a limited influence on the running-in behaviour,which was principally related to a tribochemical surface polishing process.",
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Influence of topography on the running-in of water-lubricated silicon carbide journal bearings. / Andersson, Peter; Juhanko, Jari; Nikkilä, Antti-Pekka; Lintula, Pekka.

In: Wear, Vol. 201, No. 1-2, 1996, p. 1-9.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Influence of topography on the running-in of water-lubricated silicon carbide journal bearings

AU - Andersson, Peter

AU - Juhanko, Jari

AU - Nikkilä, Antti-Pekka

AU - Lintula, Pekka

N1 - Project code: KOT2011

PY - 1996

Y1 - 1996

N2 - The study summarizes an experimental investigation on the running-in of water-lubricated journal bearings and shaft sleeves made of 10 different commercial silicon carbide materials. In each test the sliding surfaces became polished and the sliding conditions were transformed from boundary or mixed lubrication to full film lubrication within a rather short sliding distance. The initial surface roughness strongly influenced on the initial dynamic coefficient of friction, and on the running-in distance required to reduce the coefficient of friction from a level typical of boundary or mixed lubrication to a level typical of full film lubrication. The initial surface roughness of the shaft sleeve was more slowly removed than that of the bearing, and therefore the surface quality of the shaft rather than that of the bearing governed the running-in distance required for the polishing. The initial surface roughness of the bearing practically only influenced the dynamic coefficient of friction at the beginning of the running-in procedure. In comparison with the influence of the surface roughness variations, the material properties of the silicon carbides studied has a limited influence on the running-in behaviour,which was principally related to a tribochemical surface polishing process.

AB - The study summarizes an experimental investigation on the running-in of water-lubricated journal bearings and shaft sleeves made of 10 different commercial silicon carbide materials. In each test the sliding surfaces became polished and the sliding conditions were transformed from boundary or mixed lubrication to full film lubrication within a rather short sliding distance. The initial surface roughness strongly influenced on the initial dynamic coefficient of friction, and on the running-in distance required to reduce the coefficient of friction from a level typical of boundary or mixed lubrication to a level typical of full film lubrication. The initial surface roughness of the shaft sleeve was more slowly removed than that of the bearing, and therefore the surface quality of the shaft rather than that of the bearing governed the running-in distance required for the polishing. The initial surface roughness of the bearing practically only influenced the dynamic coefficient of friction at the beginning of the running-in procedure. In comparison with the influence of the surface roughness variations, the material properties of the silicon carbides studied has a limited influence on the running-in behaviour,which was principally related to a tribochemical surface polishing process.

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SP - 1

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