Moritz, K.K.MoritzMoritz, T.T.Moritz2022-03-112022-03-112009https://publica.fraunhofer.de/handle/publica/36380810.4028/www.scientific.net/KEM.412.2552-s2.0-68549117134Planar zirconia green bodies with unidirectionally aligned pore channels were prepared by an electrophoretic deposition method using an effect which is usually disadvantageous for the EPD from aqueous suspensions: the formation of gas bubbles by electrolysis. Aqueous ZrO2 suspensions containing acetic acid to enable a sufficient gas generation were used for the EPD experiments. The influence of selected parameters - electrolyte content, applied voltage, and kind of deposition electrode - on the pore structure has been investigated. The green bodies were sintered at 1450 deg C in air. Optical microscopy and X-ray computer tomography (CT) were used for characterising the porous structures. CT-investigations have the advantage of a three-dimensional characterisation of the samples by a non-destructive method. The resulting pore structure depended to a high degree on the experimental conditions of the EPD. The kind of the deposition electrode - platinum foil or platinum gauze on foil - had a strong influence on the arrangement of the pores. The EPD on Pt-foil led to randomly arranged pores, whereas very regular pore structures were obtained by the use of Pt-gauze.en620666conference paper