Isothermal and cyclic oxidation of an air plasma-sprayed thermal barrier coating system

Conference · Thu Aug 01 04:00:00 EDT 1996

OSTI ID:279596

Haynes, J A; Ferber, M K; Porter, W D ^[1]; Rigney, E D ^[2]

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1. Oak Ridge National Lab., TN (United States)
2. Alabama Univ., Birmingham, AL (United States). Dept. of Materials and Mechanical Engineering

Thermogravimetric methods for evaluating bond coat oxidation in plasma-sprayed thermal barrier coating (TBC) systems were assessed by high-temperature testing of TBC systems with air plasma-sprayed (APS) Ni-22Cr-10Al-1Y bond coatings and yttria-stabilized zirconia top coatings. High-mass thermogravimetric analysis (at 1150{sup degrees}C) was used to measure bond coat oxidation kinetics. Furnace cycling was used to evaluate APS TBC durability. This paper describes the experimental methods and relative oxidation kinetics of the various specimen types. Characterization of the APS TBCs and their reaction products is discussed.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 279596
• Report Number(s): CONF-960608--7; ON: DE96011952
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CERAMICS
CHEMICAL REACTION KINETICS
CHROMIUM ALLOYS
GAS TURBINE ENGINES
NICKEL BASE ALLOYS
OXIDATION
SPRAY COATING
SPRAYED COATINGS
THERMAL GRAVIMETRIC ANALYSIS
VACUUM COATING
VAPOR DEPOSITED COATINGS
YTTRIUM ALLOYS
ZIRCONIUM OXIDES