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The cyclic oxidation resistance at 1200 C of beta-NiAl, FeAl, and CoAl alloys with selected third element additionsThe intermetallic compounds Beta-NiAl, FeAl, and CoAl were tested in cyclic oxidation with selected third element alloy additions. Tests in static air for 200 1-hr cycles at 1200 C indicated by specific weight change/time data and x-ray diffraction analysis that the 5 at percent alloy additions did not significantly improve the oxidation resistance over the alumina forming baseline alloys without the additions. Many of the alloy additions were actually deleterious. Ta and Nb were the only alloy additions that actually altered the nature of the oxide(s) formed and still maintained the oxidation resistance of the protective alumina scale.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Barrett, C. A.
(NASA Lewis Research Center Cleveland, OH, United States)
Titran, R. H.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1992
Subject Category
Metallic Materials
Report/Patent Number
NAS 1.15:105620
Accession Number
Funding Number(s)
PROJECT: RTOP 505-63-01
Distribution Limits
Work of the US Gov. Public Use Permitted.
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