The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 1991
Filed:
Apr. 10, 1989
Michael S Donley, Dayton, OH (US);
Paul T Murray, Dayton, OH (US);
Trice W Haas, Kettering, OH (US);
University of Dayton, Dayton, OH (US);
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.