Published July 1990 | Version v1
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Fabrication, aging behavior and fatigue of transformation toughened Y-TZP(A) and Ce-TZP materials

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Description

Two central points were studied in this work, i.e. the development and the optimization as well as the thermal aging behavior and the fatigue properties of the transformation toughened ZrO2 ceramics. Both the chemical composition such as the Y2O3 (2-3 mol%), CeO2 (9 mol%) as well as Al2O3 (20-40 wt%) contents and the processing parameters (sintering and HIPing) were systematically varied in order to control the microstructures of the sintered products. Particularly the effects of the grain size, the critical flaw size, and their distributions and the stress induced phase transformation of ZrO2 were investigated. (orig.)

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MF available from INIS under the Report Number.

Abstract (German)

In dieser Arbeit wurden umwandlungsverstaerkte, ZrO2-haltige Keramiken im System Y-TZP(A) und Ce-TZP mit systematischer Variation von Gefuegeparametern wie z.B. Korngroesse, Fehlergroesse, deren Verteilung und vor allem des Potentials der spannungsinduzierten t-m Umwandlung (Ausmass sowie Form und Groesse der Umwandlungszone) hergestellt. Diese Werkstoffe wurden bzgl. der Gefuege, des spannungsinduzierten t-m Umwandlungsverhaltens sowie ihrer Einfluesse auf die mechanischen Eigenschaften charakterisiert. Weiterhin wurde das Degradationsverhalten der erreichten mechanischen Eigenschaften unter langzeitiger thermischer oder mechanischer Beanspruchung untersucht. (orig.)

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Additional details

Additional titles

Original title (German)
Herstellung, Degradation und Ermuedung von umwandlungsverstaerkten Y-TZP(A) und Ce-TZP Werkstoffen

Publishing Information

Imprint Pagination
179 p.
Report number
KFK--4769

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
22002720
Subject category
S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
AGING; ALUMINIUM OXIDES; CERAMICS; CERIUM OXIDES; COMPOSITE MATERIALS; FABRICATION; FATIGUE; OPTIMIZATION; PHASE TRANSFORMATIONS; YTTRIUM OXIDES; ZIRCONIUM OXIDES
Descriptors DEC
ALUMINIUM COMPOUNDS; CERIUM COMPOUNDS; CHALCOGENIDES; MATERIALS; MECHANICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; ZIRCONIUM COMPOUNDS