Burner-rig evaluation of thermal barrier coating systems for nickel-base alloys

Technical Report · Sun Feb 01 04:00:00 EST 1981

OSTI ID:6799482

Gedwill, M A

Eight plasma-sprayed bond coatings were evaluated for their potential use with ZrO/sub 2/-Y/sub 2/O/sub 3/ thermal barrier coatings (TBCs) which are being developed for coal-derived-fuel-fired gas turbines. Longer TBC liver in cyclic burner rig oxidation to 1050/sup 0/C were achieved with the more oxidation resistant bond coatings. These were Ni-14.1Cr-13.4A1-0.10Zr, Ni-14.1Cr-14.4A1-0.16Y, and Ni-15.8Cr-12.8A1-0.36Y on Rene 41. The TBC systems performed best when 0.015-cm thick bond coatings were employed that were sprayed at 20 kW using argon - 3.5 v/o hydrogen. Cycling had a more life limiting influence on the TBC than accumulated time at 1050/sup 0/C.

• Research Organization: National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
• DOE Contract Number: AI01-77ET10350
• OSTI ID: 6799482
• Report Number(s): DOE/NASA/2593-26; NASA-TM-81685
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
COATINGS
CORROSION RESISTANCE
DATA
DEPOSITION
EXPERIMENTAL DATA
GAS TURBINES
INFORMATION
MACHINERY
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PLASMA ARC SPRAYING
PROTECTIVE COATINGS
SPRAY COATING
SURFACE COATING
TESTING
TRANSITION ELEMENT COMPOUNDS
TURBINE BLADES
TURBINES
TURBOMACHINERY
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES