Failure and acoustic-emission response of plasma-sprayed ZrO2-8 wt% Y2O3 coatings

Journal Article · Wed Sep 01 00:00:00 EDT 1982 · Ceram. Eng. Sci. Proc.; (United States)

DOI:https://doi.org/10.1002/9780470318782.ch30· OSTI ID:5945836

Shankar, N R; Berndt, C C; Herman, H

An acoustic emission (AE) examination was conducted for the failure of ZrO2-8 wt% Y2O3 plasma-sprayed coatings incorporated in a tensile-adhesion test arrangement. The AE generated during failure is related to the cracking process, and both are in turn related to fracture morphology. The production of AE count rate distribution changes by heat treatment of the coating may be interpreted in terms of the morphological features of the coating. Insight into the adhesion mechanism of plasma-sprayed coatings is gained through the study of the relationship of the bond strength test results to AE and fracture behavior.

• Research Organization: State Univ. of New York, Stony Brook
• OSTI ID: 5945836
• Journal Information: Ceram. Eng. Sci. Proc.; (United States), Vol. 3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SPRAYED COATINGS
ACOUSTIC TESTING
YTTRIUM OXIDES
ZIRCONIUM OXIDES
ADHESION
CRACK PROPAGATION
FRACTURE PROPERTIES
HEAT TREATMENTS
TENSILE PROPERTIES
CHALCOGENIDES
COATINGS
MATERIALS TESTING
MECHANICAL PROPERTIES
NONDESTRUCTIVE TESTING
OXIDES
OXYGEN COMPOUNDS
TESTING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties