Carbon Composites for Space Tribology

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F33615-01-C-5007
Agency Tracking Number: 001ML-2315
Amount: $749,276.00
Phase: Phase II
Program: SBIR
Awards Year: 2001
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
ALLCOMP, INC.
209 Puente Ave., City of Industry, CA, 91746
DUNS: 026249487
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Wei Shih
 President
 (626) 369-4572
 weishih@aol.com
Business Contact
 Wei Shih
Title: President
Phone: (626) 369-4572
Email: weishih@aol.com
Research Institution
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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