Anisotropic thermal expansion effects in plasma-sprayed ZrO2-8 percent Y2O3 coatings

Journal Article · Thu Sep 01 04:00:00 EDT 1983 · Ceram. Eng. Sci. Proc.; (United States)

DOI:https://doi.org/10.1002/9780470320167.ch9· OSTI ID:6421441

Berndt, C C; Herman, H

The thermal expansion properties of plasma-sprayed ZrO2-8-wt pct Y2O3 coatings, detached from the substrate, have been examined. Coatings were heat-treated in air or in argon. Anisotropic effects in the longitudinal (planar to the substrate surface) and transverse (perpendicular to the substrate surface) directions were measured and related to the coating structure. The thermal expansion coefficient of the coating is discussed in terms of the material's properties, such as the crack network and interlamellar boundary distribution. A precise model for the expansion behavior of coatings still needs attention, since no description of all of the contributing variables exists. A quantitative analysis of thermal properties of coatings will aid in future design and modeling of coating systems.

• Research Organization: New York State Univ., Stony Brook
• OSTI ID: 6421441
• Journal Information: Ceram. Eng. Sci. Proc.; (United States), Journal Name: Ceram. Eng. Sci. Proc.; (United States) Vol. 4; ISSN CESPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ANISOTROPY
CHALCOGENIDES
COATINGS
DEPOSITION
EXPANSION
HEAT TREATMENTS
OXIDES
OXYGEN COMPOUNDS
PLASMA ARC SPRAYING
SPRAY COATING
SPRAYED COATINGS
SURFACE COATING
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES