Deposición electroforética de cerámica en polímeros

Abstract

The interest in electrophoretic deposition (EPD) of ceramics or ceramic composites has widely increased due to the possibility to create green bodies with several interesting characteristics for biomedical applications, for instance porous and/or laminated functionally graded ceramics. In order to get a good ceramic deposition the use of high conductive electrodes is required. Metals with high conductivity are commonly used for this purpose. In this work, the use of low cost non conductive polymers as electrodes is proposed. To increase their conductivity, these polymer electrodes were sputtered with gold or carbon. The conductivity increase obtained by the sputtering allowed the deposition of different ceramics widely used in the dental and orthopaedic industry, as yttria stabilised tetragonal zirconia particles (Y-TZP), alumina and hydroxyapatite (HA).