High Emissivity Surface Treatments for Arcjet Thrusters

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 20050
Amount: $74,987.00
Phase: Phase I
Program: SBIR
Awards Year: 1993
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Thermacore, Inc.
780 Eden Road, Lancaster, PA, 17601
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 William G. Anderson
 (717) 569-6551
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Most surface emissivity coatings exhibit adherence problems under there severe operating conditions of an arcjet. A porous surface produced from powdered tungsten would more than double the effective emissivity, and would maintain full metallurgical integrity with the tungsten anode. Certain coatings, specifically hafnium carbide, appear promising and will be investigated. Combining hafnium carbide with porous tungsten could produce an effective emissivity in excess of 0.98.

* information listed above is at the time of submission.

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