No-firing Ceramic Coatings Using Electrophoretic Deposition Process

Abstract

The film formation method utilizing the electrophoretic phenomenon of charged particles in a liquid is called “electrophoretic deposition (EPD)” and is used for powder coating, etc. The main difference between EPD and other colloidal methods is the coexistence of an electrode reaction, i.e., an electrochemical reaction that occurs at the interface between the electrode and the electrolyte. The applied electric field in the EPD method plays an important role not only in the electrophoresis of the charged particles, but also in controlling the aggregation mechanism and film quality. In this paper, we introduce the principle of the EPD method that takes into account the electrode reaction, and an example of its application to ceramic coating that does not require a post-sintering process.