ENVIRONMENT-RESISTANT COATINGS FOR TI-ALLOYS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$500,000.00
Award Year:
1992
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
16904
Agency Tracking Number:
16904
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
57 Maryanne Dr, Monroe, CT, 06468
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
THE NICOCRAIY COMPOSITES ARE EXTENSIVELY USED FOR OXIDATION PROTECTION OF NI-BASE SUPERALLOYS. HOWEVER, FOR HIGHER TEMPERATURE TI-ALLOYS, THIS OVERLAY WILL REACT WITH THE SUBSTRATE THUS DEFEATING THE INTENDED PURPOSE OF THE COATING. THIS PROJECT EXPLORES THE DEVELOPMENT OF A COMPOSITE COATING WHERE AN INTERMEDIATE NITI LAYER IS INTERPOSED BETWEEN THE TITANIUM ALLOY AND THE NICOCRAIY OVERLAY. THE DUCTILE NITI LAYER CAN ACCOMMODATE INTERFACIALSTRESSES GENERATED DUE TO THE THERMAL EXPANSION MISMATCH BETWEEN THE BASE MATERIAL AND THE PROTECTIVE COATING. IN ADDITION TO NITI BEING COMPATIBLE WITH TITANIUM, IT IS EXPECTED TO BE COMPATIBLE WITH THE NICOCRAIY LAYER AS WELL. THE ESTABLISHMENT OF THIS COMPOSITE COATING APPROACH WILL RESULT IN A RATHER QUICK AND EASY ADAPTATION OF THE WELL-EXAMINED AND APPLIED NICOCRAIY COATING TO TITANIUM ALLOYS, THUS ENHANCING THEIR CAPABILITY FOR HIGH-PERFORMANCEGAS TURBINE APPLICATIONS. THE NICOCRAIY COMPOSITES ARE EXTENSIVELY USED FOR OXIDATION PROTECTION OF NI-BASE SUPERALLOYS. HOWEVER, FOR HIGHER TEMPERATURE TI-ALLOYS, THIS OVERLAY WILL REACT WITH THE SUBSTRATE THUS DEFEATING THE INTENDED PURPOSE OF THE COATING. THIS PROJECT EXPLORES THE DEVELOPMENT OF A COMPOSITE COATING WHERE AN INTERMEDIATE NITI LAYER IS INTERPOSED BETWEEN THE TITANIUM ALLOY AND THE NICOCRAIY OVERLAY. THE DUCTILE NITI LAYER CAN ACCOMMODATE INTERFACIALSTRESSES GENERATED DUE TO THE THERMAL EXPANSION MISMATCH BETWEEN THE BASE MATERIAL AND THE PROTECTIVE COATING. IN ADDITION TO NITI BEING COMPATIBLE WITH TITANIUM, IT IS EXPECTED TO BE COMPATIBLE WITH THE NICOCRAIY LAYER AS WELL. THE ESTABLISHMENT OF THIS COMPOSITE COATING APPROACH WILL RESULT IN A RATHER QUICK AND EASY ADAPTATION OF THE WELL-EXAMINED AND APPLIED NICOCRAIY COATING TO TITANIUM ALLOYS, THUS ENHANCING THEIR CAPABILITY FOR HIGH-PERFORMANCEGAS TURBINE APPLICATIONS.

* information listed above is at the time of submission.

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