泳動電着法による管状多孔質アルミナ基板上へのランタンコバルタイト緻密酸化物薄膜の作製

根岸 秀之; 大島 徳夫; 原谷 賢治; 榊 啓二; 池上 徹; 井手本 康; 小浦 延幸; 柳下 宏

doi:10.2109/jcersj.114.36

Special Issue by Guest Editors: Novel Materials Design and Processing by External and Internal Reaction Fields: Papers

Preparation of Thin and Dense Lanthanum Cobaltite Coating on Porous Tubular Alumina Supports by Electrophoretic Deposition

Hideyuki NEGISHI, Norio OSHIMA, Kenji HARAYA, Keiji SAKAKI, Toru IKEGAMI, Yasushi IDEMOTO, Nobuyuki KOURA, Hiroshi YANAGISHITA

Author information

Hideyuki NEGISHI
Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)
Norio OSHIMA
Faculty of Science and Technology, Tokyo University of Science
Kenji HARAYA
Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)
Keiji SAKAKI
Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)
Toru IKEGAMI
Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)
Yasushi IDEMOTO
Faculty of Science and Technology, Tokyo University of Science
Nobuyuki KOURA
Faculty of Science and Technology, Tokyo University of Science
Hiroshi YANAGISHITA
Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST)

Keywords: Electrophoretic deposition, Lanthanum cobaltite, Mixed conductor, Thin coating, Dense coating, Porous alumina, Tubular, Methanol

JOURNAL FREE ACCESS

2006 Volume 114 Issue 1325 Pages 36-41

DOI https://doi.org/10.2109/jcersj.114.36

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Abstract

The electrophoretic deposition (EPD) process is one of several ceramic powder assembling technologies using a simultaneous colloidal process and electrochemical driving force. For the further development of the EPD technique, the possibility and the usefulness of preparing a thin and dense ceramic coating on non-electronically conductive porous tubular ceramics using the EPD technique was investigated. La_0.8Sr_0.2Co_0.8Sr_0.2O_3-δ (LSCF) was used as the deposition material and a porous alumina tube was used as the deposition substrate. Methanol (MeOH) was suitable as a dispersing medium for the LSCF powder. LSCF particles were positively charged in MeOH. For the fabrication of a uniform EPD layer, the cathode was placed in a porous alumina tube. The insides of the porous alumina tubes were filled with MeOH and the cathode did not make contact with the EPD bath. A 30 μm (200 g/m²) thick uniform LSCF powder coating was obtained by EPD at 100 V for 10 min. After sintering at 1500°C for 5 h, a 20 μm dense membrane was obtained.

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