Mechanical property measurements of plasma-sprayed thermal-barrier coatings subjected to oxidation

Journal Article · Sun Jul 01 00:00:00 EDT 1984 · Ceram. Eng. Sci. Proc.; (United States)

DOI:https://doi.org/10.1002/9780470320228.ch5· OSTI ID:5427008

Berndt, C C; Miller, R A

Techniques have been developed for measuring the tensile properties of plasma-sprayed coatings which are used in thermal barrier applications. The measurements have included the average Young's modulus, bond strength and elongation at failure. The oxidation behavior of the bond coat plays an important role in the integrity and adhesion of plasma-sprayed thermal barrier coatings. This work studies the nature of the high temperature degradation on the mechanical properties of the coating. Furnace tests have been carried out on U-700 alloy with bond coats of NiCrAlY or NiCrAlZr and an overlay of ZrO2-8 percent Y2O3. Weight gain measurements on the coatings have been examined with relation to the adhesion strength and failure observations. The results from an initial study are reported in this work. 13 references.

• Research Organization: NASA, Lewis Research Center, Cleveland, OH
• OSTI ID: 5427008
• Journal Information: Ceram. Eng. Sci. Proc.; (United States), Vol. 5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
SPRAY COATING
CHROMIUM ALLOYS
NICKEL ALLOYS
UDIMET 700
SPRAYED COATINGS
YTTRIUM ALLOYS
YTTRIUM OXIDES
ZIRCONIUM ALLOYS
ZIRCONIUM OXIDES
OXIDATION
TENSILE PROPERTIES
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
COATINGS
COBALT ALLOYS
DEPOSITION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL BASE ALLOYS
OXIDES
OXYGEN COMPOUNDS
SURFACE COATING
TITANIUM ALLOYS
TRANSITION ELEMENT COMPOUNDS
UDIMET ALLOYS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties