Dr. Alaa Abdul hasan Atiyah ,Dr. Saad Badry Hasson Farid ,Assist. Lec. Awham Jumah Salman
الملخص الانجليزي
This work is a study of the effect of polyethylene glycol (PEG) on electrophoretic deposition )
EPD) of alumina and zirconia particles. The effect of polyethylene glycol as a binder material and the toluene as a dielectric liquid, on the pH of suspension, the final thickness and green density of the deposed parts were studied. There was a difference in the behavior of polyethylene glycol when added for the alumina suspension and the zirconia suspension. The increase in polyethylene glycol was useful to deposit the zirconia more than alumina. The pH for both alumina and zirconia suspension increases with the increase of polyethylene glycol content and with the addition of toluene due to increase of the OH– concentration in the suspension. This increase of pH enhances the particle surface charge and enhances the deposition rate, which led to the increase of density of the deposit.