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Tribology Transactions Volume 46, 2003 - Issue 1
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Original Articles

Spiral Orbit Tribometry — Part II: Evaluation of Three Liquid Lubricants in Vacuum

Stephen V. Pepper NASA-Glenn Research Center, Cleveland, Ohio, 44135
&
Edward P. Kingsbury Interesting Rolling Contact, Walpole, Massachusetts, 02081
Pages 65-69 | Published online: 25 Mar 2008
 
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Abstract

The coefficients of friction and relative degradation rates of three lubricants run in the boundary regime in vacuum are evaluated in a Spiral Orbit Tribometer. This tribometer subjected the lubricants to rolling contact conditions similar to those found in angular contact ball bearings. A multiply alkylated cyclopentane (MAC) hydrocarbon lubricant suffered degradation at a rate almost two orders of magnitude less than the degradation rate of two perfluoropolyalkylether (PFPE) lubricants.

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Related Research Data

Perfluoropolyethers: intramolecular disproportionation
Source: American Chemical Society (ACS)
The Effect of Stress and TiC Coated Balls on Lifetime of a Perfluoropolyalkylether Using a Vacuum Rolling Contact Tribometer
Source: Informa UK Limited
Surface films and soluble degradation products formed in a PFPAE fluid and their implications to the wear of steel
Source: Informa UK Limited
Perfluoropolyethers: Their physical properties and behaviour at high and low temperatures
Source: Elsevier BV
Tribology for space applications
Source: SAGE Publications
Auger analysis of films formed on metals in sliding contact with halogenated polymers
Source: AIP Publishing
The Reaction of Perfluoropolyalkylether Oil with FeF(3), AlF(3), and AlCl(3) at Elevated Temperatures.
Source: Informa UK Limited
Perfluoropolyalkylether Oil Degradation: Inference of FeF3 Formation on Steel Surfaces under Boundary Conditions
Source: Informa UK Limited
Acidic Attack of Perfluorinated Alkyl Ether Lubricant Molecules by Metal Oxide Surfaces
Source: Informa UK Limited
Mechanical scission of perfluoropolyethers
Source: Wiley

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