Abstract
Electrophoretic deposition (EPD) has attracted attention as a coating technology for ceramic particles. Ethyl perfluorobutyl ether (EFE), a hydrofluoroether, can be used as a solvent for preparing silica particle suspensions for EPD. EFE is polar, nonflammable, and has a high density. In addition, the electrical insulation of EFE allows significant power savings over conventional EPD. In this study, the power consumption of EPD with EFE was compared with that of EPD with various common solvents. The silica particle suspension showed a high zeta potential in EFE. Power consumption per unit deposition amount in EFE at 10 V was 6.4 × 10−5% of that of water at 100 V. Similarly, it was 2.6 × 10−3% of that of acetone, 7.8 × 10−5% of that of ethanol, and 7.5 × 10−5% of that of ethanol at 100 V. Compared with the solvents used previously in EPD, EFE offers significant energy savings to the EPD process.
