Carbon Composites for Space Tribology

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$749,276.00
Award Year:
2001
Program:
SBIR
Phase:
Phase II
Contract:
F33615-01-C-5007
Award Id:
55258
Agency Tracking Number:
001ML-2315
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
209 Puente Ave., City of Industry, CA, 91746
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
026249487
Principal Investigator:
WeiShih
President
(626) 369-4572
weishih@aol.com
Business Contact:
WeiShih
President
(626) 369-4572
weishih@aol.com
Research Institute:
n/a
Abstract
The intent of this Phase I effort was to examine the feasibility of using C-C composite for possible tribological applications in Space. In the Phase I effort, selected C-C composite materials were modified and tested for both high-speed bearing cage andslip ring/ brush applications under simulated space environments. 2D C-C cage materials were modified to reduce its pore size for lubricant retention. Friction tests revealed comparable frictional coefficient between modified C-C and cotton-phenolicbaseline. 3D C-C was selected for initial brush test based on its isotropic properties. Samples were further metal (silver and copper) impregnated to improve their performances. Frictional coefficient and electrical resistance were measured. C-C basedbrushes exhibited promising results when compared to the performance of Ag-MoS2 baseline.In Phase II, we propose to further optimize C-C based materials for both cage and brush applications. In addition to fine-tune the C-C composite, lubricants will be added to the base composite via filler, coating and material conversion. Prototype cageswill be fabricated and tested for both gyroscope (government) and X-ray Scanner (commercial) applications. Slip Ring brushes will also be fabricated and tested against silver ring using real hardware for both power and signal transmissions.

* information listed above is at the time of submission.

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