Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Formation of CeO2 coatings on Si–SiC foams by electrophoretic deposition and sintering in air
Authors : Spaggiari, Marco
Bianchi, Giovanni
Santoliquido, Oscar
Senn, Philippe
Fitriani, Pipit
de Hazan, Yoram
Penner, Dirk
Yoon, Dang-Hyok
Ortona, Alberto
et. al : No
DOI : 10.1016/j.ceramint.2019.05.070
Published in : Ceramics International
Volume(Issue) : 45
Issue : 12
Pages : 15603
Pages to: 15608
Issue Date: 2019
Publisher / Ed. Institution : Elsevier
ISSN: 0272-8842
1873-3956
Language : English
Subject (DDC) : 660: Chemical engineering
Abstract: We demonstrate that AC-EPD, using an aqueous slurry system followed by sintering in air, is an effective technique to form thick ceramic coatings on porous Si–SiC cellular ceramic substrates. As an example, CeO2 particles with high surface area dispersed in water have been deposited successfully on Si–SiC foams by optimizing the zeta potential and dispersion conditions. Moreover, the parameters for AC-EPD were determined by controlling voltage, frequency, time, and degree of signal asymmetry to minimize water electrolysis in this aqueous system. The microstructure of CeO2 layer has been controlled by adjusting sintering conditions to obtain porous and dense layers at 1200 and 1400 °C, respectively. The grain growth of the CeO2 deposit upon the heat treatment was explained by the diffusion of SiO2 into the CeO2 coating layer, which resulted in a firm joining with the Si–SiC substrate.
URI: https://digitalcollection.zhaw.ch/handle/11475/19503
Fulltext version : Published version
License (according to publishing contract) : Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Institute of Materials and Process Engineering (IMPE)
Appears in Collections:Publikationen School of Engineering

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