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Heterogeneous junction of yttria partially stabilized zirconia by superplastic flow

Published online by Cambridge University Press:  31 January 2011

Arturo Domínguez-Rodríguez ,
Fernando Guiberteau  and
Manuel Jimenez-Melendo
Arturo Domínguez-Rodríguez
Affiliation:
Departamento de Física Materia Condensada, Universidad de Sevilla, Apartado 1065, 41080 Sevilla, Spain
Fernando Guiberteau
Affiliation:
Departamento de Física, Universidad de Extremadura, 61070 Badajoz, Spain
Manuel Jimenez-Melendo
Affiliation:
Departamento de Física Materia Condensada, Universidad de Sevilla, Apartado 1065, 41080 Sevilla, Spain
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Abstract

Layers of different composition and/or grain size of yttria partially stabilized zirconia (YPSZ) have been compressed, with the stress perpendicular to the interface of the layers and temperature of 1400 °C, in order to produce a joint using the microstructural feature of superplasticity found in fine-grained ceramics. The pieces joined have been characterized by scanning electron microscopy (SEM), showing a clean interface with no cavitation. The stiffness of the junction was checked using Vickers indentation at room temperature at the interface and compression tests at the same conditions (T = 1400 °C in air) used for the joining and the stress parallel to the interface. The observation and comparison between the cracks developed around the indents at the interface and in the bulk of the pieces joined as well as the absence of cavities along the interface in the samples compressed parallel to the interface shows that this technique is useful to produce a joint with a clean and strong interface.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1631 - 1636
Copyright
Copyright © Materials Research Society 1998

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