Effect of test environment on lifetime of a vacuum lubricant

Details Effect of test environment on lifetime of a vacuum lubricant Effect of test environment on lifetime of a vacuum lubricant

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.591...73p&link_type=abstract

In: Proceedings of the 11th European Space Mechanisms and Tribology Symposium, ESMATS 2005, 21-23 September 2005, Lucerne, Switz

Physics

Tribology

Scientific paper

The relative destruction rate of Krytox 143AC molecules subjected to rolling contact with 440C steel has been evaluated as a function of test environment. The rates in ultrahigh vacuum, 1.6 Torr oxygen and 760 Torr dry nitrogen were about the same. However, water vapor in the test environment - a few ppm in 760 Torr nitrogen - reduced the destruction rate by up to an order of magnitude.

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