The cyclic oxidation resistance at 1200 C of Beta-NiAl, FeAl, and CoAl alloys with selected third element additions

Technical Report · Wed Apr 01 04:00:00 EST 1992

OSTI ID:7116164

Barrett, C A; Titran, R H

The 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.

• Research Organization: National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
• OSTI ID: 7116164
• Report Number(s): N-92-24554; NASA-TM--105620; E--5326; NAS--1.15:105620; CNN: RTOP 505-63-01
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ADDITIVES
AIR
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COATINGS
COBALT ALLOYS
COHERENT SCATTERING
CORROSION RESISTANCE
DIFFRACTION
ELEMENTS
FLUIDS
GASES
INTERMETALLIC COMPOUNDS
IRON ALLOYS
METALLURGICAL EFFECTS
METALS
NICKEL ALLOYS
NIOBIUM
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PROTECTIVE COATINGS
SCATTERING
TANTALUM
TANTALUM ADDITIONS
TANTALUM ALLOYS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENTS
X-RAY DIFFRACTION