Friction and wear of self-lubricating TiN-MoS{sub 2} coatings produced by chemical vapor deposition
- Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.
The purpose of the work reported here was to develop special chemical vapor deposition (CVD) methods to produce self-lubricating ceramic coatings in which the lubricating and structural phases were co-deposited on Ti-6Al-4V alloy substrates. These novel composite coatings are based on a system containing titanium nitride and molybdenum disulfide. The method for producing these coatings and their sliding behavior against silicon nitride counterfaces, in the temperature range of 20 to 700 C in air, are described. The initial sliding friction coefficients for the composite coatings at room temperature were 0.07 to 0.30, but longer-term transitions to higher friction occurred, and specimen-to-specimen test variations suggested that further developments of the deposition process are required to assure repeatable friction and wear results. Friction and wear tests at 300 and 700 C produced encouraging results, but tests run at an intermediate temperature of 400 C exhibited friction coefficients of 1.0 or more. Oxidation and a change in the nature of the debris layers formed during sliding are believed to be responsible for this behavior.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 611624
- Report Number(s):
- CONF-9412140-; ISBN 0-8031-2036-2; TRN: IM9816%%98
- Resource Relation:
- Conference: Symposium on effect of surface coatings and treatments on wear, Phoenix, AZ (United States), 7 Dec 1994; Other Information: PBD: 1996; Related Information: Is Part Of Effect of surface coatings and treatments on wear; Bahadur, S. [ed.] [Iowa State Univ., Ames, IA (United States)]; PB: 166 p.; ASTM special technical publication, 1278
- Country of Publication:
- United States
- Language:
- English
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