TY - JOUR
T1 - Friction and wear of self-lubricating TiN-MoS2 coatings produced by chemical vapor deposition
AU - Blau, Peter J.
AU - Yust, Charles S.
AU - Bae, Yong W.
AU - Besmann, Theodore M.
AU - Lee, Woo Y.
PY - 1996
Y1 - 1996
N2 - 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-6A1-4V 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.
AB - 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-6A1-4V 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.
KW - Chemical vapor deposition
KW - Friction properties
KW - Molybdenum disulfide
KW - Self-lubricating materials
KW - Surface coatings
KW - Surface treatments
KW - Titanium nitride
KW - Wear testing
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M3 - Article
AN - SCOPUS:0029700290
SN - 0066-0558
VL - 1278
SP - 22
EP - 34
JO - ASTM Special Technical Publication
JF - ASTM Special Technical Publication
ER -