Functionally Graded ZrO2-WC Composites Processed by Electrophoretic Deposition

This paper reports on the processing of homogeneous as well as graded ZrO2-WC composites by means of electrophoretic deposition. The EPD characteristics of the constituent powders, such as the point of zero charge, the natural pH and the electrophoretic mobility are experimentally determined and rep...

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Bibliographic Details
Published in:Key engineering materials 2001-12, Vol.206-213, p.189-192
Main Authors: Van der Biest, Omer, Anné, Guy, Put, Stijn, Vleugels, Jef
Format: Article
Language:English
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Summary:This paper reports on the processing of homogeneous as well as graded ZrO2-WC composites by means of electrophoretic deposition. The EPD characteristics of the constituent powders, such as the point of zero charge, the natural pH and the electrophoretic mobility are experimentally determined and reported. The EPD processing parameters are described and the mechanical properties of the densified homogeneous and FGM composites are reported and evaluated. Moreover, the deposition yield in the FGM material is described as a function of time and starting composition of the suspensions, resulting in a model of the EPD process that allows one to predict the composition gradient in the sintered material. The presented model enables one to calculate the composition gradient in the ZrO2-WC FGM material from the starting composition of the suspensions, the EPD operating parameters and the powder-specific EPD characteristics. (Author)
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.206-213.189