The Effect of the Composition of Gaseous Media on the Friction of Graphitic Materials,
Abstract
The friction and wear properties of a graphitic carbon sliding against steel have been measured in vacuum and in air, oxygen, nitrogen, argon and helium. The influence of water vapour has been studied in helium over a concentration range from 1 x 10 to the minus 20th power to 17.3 g/cu m. In dried gases, high friction and wear - 'dusting' - are obtained only when the nominal surface pressure exceeds a critical value. Below this value, the friction and wear remain low, even in vacuum at high temperatures. The results conflict with Savage's hypothesis of 'dusting', it is suggested that mechanical factors are more important than adsorption phenomena in the transition to 'dusting'.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 21, 1974
- Accession Number
- AD0781768
Entities
People
- L. Plutalova
Organizations
- Royal Aircraft Establishment