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Oxidation Resistant Ti-Al-Fe Diffusion Barrier for FeCrAlY Coatings on Titanium AluminidesA diffusion barrier to help protect titanium aluminide alloys, including the coated alloys of the TiAl gamma + Ti3Al (alpha2) class, from oxidative attack and interstitial embrittlement at temperatures up to at least 1000 C is disclosed. The coating may comprise FeCrAlX alloys. The diffusion barrier comprises titanium, aluminum, and iron in the following approximate atomic percent: Ti-(50-55)Al-(9-20)Fe. This alloy is also suitable as an oxidative or structural coating for such substrates.
Document ID
19970009935
Acquisition Source
Legacy CDMS
Document Type
Other - Patent Application
Authors
Brady, Michael P. (NASA Lewis Research Center Cleveland, OH United States)
Smialke, James L. (NASA Lewis Research Center Cleveland, OH United States)
Brindley, William J. (NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
October 21, 1996
Subject Category
Metallic Materials
Report/Patent Number
NAS 1.71:LEW-20006-1
Accession Number
97N15580
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-LEW-20006-1
Patent Application
US-Patent-Appl-SN-735368

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