Mechanisms of high-temperature creep of fully stabilized zirconia single crystals as a function of the yttria content

Journal Article · Tue Jul 01 00:00:00 EDT 1997 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1997.tb03036.x· OSTI ID:529532

Gomez-Garcia, D; Martinez-Fernandez, J; Dominguez-Rodriguez, A; Castaing, J ^[1]

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1. Univ. de Sevilla y C.S.I.C. (Spain). Dept. de Fisica de la Materia Condensada

High-temperature creep behavior of yttria fully stabilized zirconia single crystals with various yttria contents in the interval 9.4 {le} x {le} 21 mol % has been studied. The mechanical data have been collected as a function of both the temperature and the yttria concentration. The creep behavior has been explained in terms of a transition between a dislocation viscous glide and a dislocation climb controlled mechanism, making use of a generalized version of a classical model for alloys proposed by Burton. The yttria concentration dependence of the creep rate has been connected with results on cationic diffusivity, with a possible influence of impurities.

• Sponsoring Organization: Comision Interministerial de Ciencia y Tecnologia (Spain)
• OSTI ID: 529532
• Journal Information: Journal of the American Ceramic Society, Vol. 80, Issue 7; Other Information: DN: Paper presented at the symposium on microstructure-property relations of advanced materials, April 29--30, 1996, Stuttgart (DE); PBD: Jul 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CREEP
ZIRCONIUM OXIDES
YTTRIUM OXIDES
SAMPLE PREPARATION
MONOCRYSTALS
CHEMICAL COMPOSITION
TEMPERATURE RANGE 1000-4000 K
STRAINS
DISLOCATIONS
DATA ANALYSIS