Abstract
The formations of bubble in the polystyrene latex (PSL) aqueous suspension were observed through out the electrophoretic deposition (EPD) process. The voltages in between of 20V to 50V were studied as a parameter for this study to investigate reason of bad quality of deposition when high voltage is applied in the EPD process. The objectives of the study are to observe the pattern and to determine of bubbles formation size on the stainless steel during pulse EPD process. The PSL suspension from pH 5 to 10 were prepared. The bubble formation was observed and size of bubbles was measured by using microscopic video. The difference voltages are applied on the suspension to observe the best condition with no or low bubbles formation when voltage applied. From the experiment, when the voltages increase, the number of bubbles increases. Observation shown that at low voltage the bubble tend to grow up and then burst during the process. As an addition, the sizes of bubbles decrease in base suspension though its increase in acid suspension.
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