Nano Alumina Deposition and Prediction of EPD Yield by Using of Cell Current

An electrophoretic deposition process as a high-speed process of ceramic body shaping has received great attention in recent years and many kinetic equations from 1940 attempt to predict the yield of the process. In the development of these relations two major issues are taken into consideration: 1- Using constant current and 2- constant potential, each of these, led to a set of assumptions in the development of relationships. In all these efforts validation was based on a series of deposition tests is done at regular intervals (non-online or off-line). With the development of new systems, these tests can be done in the on-line process, which this method will result in the deletion of some errors in the system. By eliminating these errors there became clear that some considered assumptions in the development of relations were be ignored for long times and causes some errors. The relationships that have been developed based on the electric current of the cell will have less of errors. Because the sensitivity of the electrophoretic deposition process to the electric field changes inside the suspension that is the main driver of the process. finally, It was found that by taking account the electrical current of cell in the equation of Ferrari et al. there was be a new kinetic relationship that were honest in the constant electric potential and constant electrical current.