Vapor phase lubrication of ceramics
- Cleveland State Univ., OH (United States)
Vapor phase lubrication of ceramics under sliding wear has been extended up to 500{degrees}C, using tricresyl phosphate as the vaporized lubricant. In order to successfully lubricate ceramics, it was necessary to first activate the surface with a metal. Different methods of activating the surface have been investigated, including in-situ reaction with metal components. Continuous vapor phase lubrication of the activated ceramic reduced the coefficient of friction from 0.7 to less than 0.1, resulting in essentially no wear. The reduction in the wear rate and friction coefficient was due to a polymeric derivative of the original TCP which was formed on the high temperature surfaces. The deposit formed on the surface was analyzed using high performance liquid chromotography (HPLC). Results have suggested that it ins an organic polymer with a molecular range of 6000 to 60000 gmole/mole and an average molecular weight of approximately 30000 gmole/mole. This method of lubrication has direct application for the continuous lubrication of ceramic engines. 9 refs., 12 figs., 1 tab.
- OSTI ID:
- 273857
- Journal Information:
- Lubrication Engineering, Journal Name: Lubrication Engineering Journal Issue: 10 Vol. 50; ISSN 0024-7154; ISSN LUENAG
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of surface temperature on vapor phase lubrication
Vapor-phase deposition studies of phosphate esters on metal and ceramic surfaces. Final report