Anelastic behavior of plasma-sprayed zirconia coatings

Yajie Liu, Toshio Nakamura, Gopal Dwivedi, Alfredo Valarezo, Sanjay Sampath

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

61 Citas (Scopus)

Resumen

Low-temperature thermal cycling of plasma-sprayed zirconia coatings reveals unique mechanical responses in their curvature measurements, namely nonlinear and cyclic hysteresis, collectively termed as anelastic. These features arise from the inherent layered, porous, and cracked morphology of thermal-sprayed ceramic materials. In this paper, the mechanisms of anelasticity are characterized by crack closure and frictional sliding models, and stress-strain relations of various thermal-sprayed zirconia coatings were determined via an inverse analysis procedure. These results demonstrate process conditions such as powder morphology and spray parameters significantly influence the mechanical behaviors of coatings. The unique anelastic responses can be used as valuable parameters in identifying coating quality as well as process reliability in manufacturing.

Idioma originalInglés
Páginas (desde-hasta)4036-4043
Número de páginas8
PublicaciónJournal of the American Ceramic Society
Volumen91
N.º12
DOI
EstadoPublicada - dic. 2008
Publicado de forma externa

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