Method for forming thin solid lubricious films and film articles

Details Method for forming thin solid lubricious films and film articles Method for forming thin solid lubricious films and film articles

1989-04-10

1991-03-26

Silverman, Stanley

Coating processes

Electrical product produced

Welding electrode

427 42, 4272481, 4272531, 4272552, B05D 306

Patent

active

050027980

ABSTRACT:
Thin films of solid lubricious metal chalcogenides, such as MoS.sub.2, are grown on stainless steel substrates by pulsed laser evaporation (P.L.E.). X-ray photoelectron spectroscopy of PLE deposited MoS.sub.2 films grown at substrate temperatures up to 300.degree. C. have the same stoichiometry as bulk MoS.sub.2. MoS.sub.2 PLE deposited films grown at 450.degree. C. are sulfur rich. These laser-deposited films have a granular structure and exhibit none of the dendritic structures typically observed in sputter-deposited films. The coefficients of friction of PLE films were measured in laboratory air and ranged from 0.09-0.25; the majority of values were between 0.16 and 0.20. These frictional coefficients are in the appropriate range for a solid lubricant.

REFERENCES:
patent: 4664940 (1987-05-01), Bensoussan et al.
patent: 4874741 (1989-10-01), Shaw et al.

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