PROTECTIVE COATING FOR CARBON-CARBON COMPOSITES

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$49,926.00
Award Year:
1991
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
16909
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Spire Corp
Patriots Park, Bedford, MA, 01730
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
CARBON-CARBON (C-C) HAS AN EXTREMELY HIGH STRENGTH-TO-WEIGHTRATIO AND WOULD THEREFORE BE THE MATERIAL OF CHOICE FOR HOT STRUCTURES ON HYPERSONIC VEHICLES IF ITS OXIDATION RESISTANCE COULD BE IMPROVED. TO ACHIEVE THIS OBJECTIVE, A COATING SYSTEM WILL BE DEVELOPED IN WHICH A VERY THIN FILM OF PLATINUM SERVES AS THE FINAL LINE OF DEFENSE AGAINST OXIDATION. PLATINUM HAS A HIGH MELTING TEMPERATURE, EXCELLENT OXIDATION RESISTANCE, AND IS DUCTILE ENOUGH TO AVOID CRACKING DURING THERMAL CYCLING. TO ENSURE GOOD ADHESION, THE PLATINUM FILM WILL BE FORMED ON C-C BY ION BEAM-ASSISTED DEPOSITION (IBAD). IBAD WILL BE USED IN PHASEI TO PLATINUM COAT TWO-DIMENSIONAL C-C COUPONS; THE COUPONS WILL BE EVALUATED FOR OXIDATION RESISTANCE UP TO 2500 DEGREES FAHRENHEIT DURING THERMAL CYCLING. SUCCESSFUL PHASEI RESULTS WILL LEAD TO FABRICATION AND TESTING OF C-C PANELSWITH PLATINUM FILMS FORMING PART OF AN OXIDATION-RESISTANT COATING SYSTEM. THE PLATINUM FILM WILL BE ONE COMPONENT OF A SYSTEM INCORPORATING MATRIX OXIDATION INHIBITORS, CERAMIC SURFACE COATINGS, AND GLASSY CRACK SEALERS--RESULTING IN MULTIPLE LINES OF DEFENSE AGAINST COMPOSITE OXIDATION. CARBON-CARBON (C-C) HAS AN EXTREMELY HIGH STRENGTH-TO-WEIGHTRATIO AND WOULD THEREFORE BE THE MATERIAL OF CHOICE FOR HOT STRUCTURES ON HYPERSONIC VEHICLES IF ITS OXIDATION RESISTANCE COULD BE IMPROVED. TO ACHIEVE THIS OBJECTIVE, A COATING SYSTEM WILL BE DEVELOPED IN WHICH A VERY THIN FILM OF PLATINUM SERVES AS THE FINAL LINE OF DEFENSE AGAINST OXIDATION. PLATINUM HAS A HIGH MELTING TEMPERATURE, EXCELLENT OXIDATION RESISTANCE, AND IS DUCTILE ENOUGH TO AVOID CRACKING DURING THERMAL CYCLING. TO ENSURE GOOD ADHESION, THE PLATINUM FILM WILL BE FORMED ON C-C BY ION BEAM-ASSISTED DEPOSITION (IBAD). IBAD WILL BE USED IN PHASEI TO PLATINUM COAT TWO-DIMENSIONAL C-C COUPONS; THE COUPONS WILL BE EVALUATED FOR OXIDATION RESISTANCE UP TO 2500 DEGREES FAHRENHEIT DURING THERMAL CYCLING. SUCCESSFUL PHASEI RESULTS WILL LEAD TO FABRICATION AND TESTING OF C-C PANELSWITH PLATINUM FILMS FORMING PART OF AN OXIDATION-RESISTANT COATING SYSTEM. THE PLATINUM FILM WILL BE ONE COMPONENT OF A SYSTEM INCORPORATING MATRIX OXIDATION INHIBITORS, CERAMIC SURFACE COATINGS, AND GLASSY CRACK SEALERS--RESULTING IN MULTIPLE LINES OF DEFENSE AGAINST COMPOSITE OXIDATION.

* information listed above is at the time of submission.

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