Oxidation-resistant Ti-Al-Fe alloy diffusion barrier coatings

Details Oxidation-resistant Ti-Al-Fe alloy diffusion barrier coatings Oxidation-resistant Ti-Al-Fe alloy diffusion barrier coatings

1996-10-21

1998-07-07

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428652, 428653, 428654, 428660, 428678, 427405, 420551, 420552, 420418, B32B 1500, B32B 1501, C22C 2100, C22C 1400

Patent

active

057766177

ABSTRACT:
A diffusion barrier to help protect titanium aluminide alloys, including the coated alloys of the TiAl.gamma.+Ti.sub.3 Al (.alpha..sub.2) class, from oxidative attack and interstitial embrittlement at temperatures up to at least 1000.degree. C. is disclosed. The coating may comprise FeCrAlX alloys. The diffusion barrier comprises titanium, aluminum, and iron in the following approximate atomic percent:

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