Closed Field Unbalanced Magnetron Sputtered Solid Lubricant/Ceramic Coatings For Improved Wear Resistance of Bushing and Gear Materials

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$69,793.00
Award Year:
1996
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
31938
Agency Tracking Number:
31938
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
133 Defense Highway, Suite 212, Annapolis, MD, 21401
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr. Frank Kustas
(301) 261-8373
Business Contact:
() -
Research Institute:
n/a
Abstract
Increased wear life of bushings and gears in a high-pressure Navy gear pump will result in increased pump reliability and reduced refurbishment costs. Wear of silver-impregnated carbon (C/graphite (Gr) bushings against stellite gears results in reduced pump performance, generation of wear debris, displacement of the gears, and eventual pump failure. Technology Assessment and Transfer, a firm with expertise in novel tribocoatings, proposes two innovative solutions based on closed field unbalanced magnetron sputtering: 1) dispersed solid lubricant (e.g, diamondlike carbon, boron nitride) "islands" within a hard ceramic (e.g., boron carbide, silicon carbide) coating matrix and 2) ceramic coatings that will form lubricious oxide/hydroxide surface layers after reaction with the water working fluid. These solutions offer solid lubrication and potential for lubricant refurbishment (through water entrapment) to the bushing/gear interface, while still providing a hard, wear-resistant ceramic matrix. Alternate metallic materials for the bushing/gear tribosystem, that will not gall or seize in the event of coating wear, are also proposed. Coatings will be evaluated by immersion in static water, scratch adhesion, particle erosion, and rotating-disk wear tests in water. The best performing coating will be demonstrated on bushing and gear components.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government