Evaluation of Nanostructure Al2O3-TiO2 Composite CoatingsSynthesized By Electrophoretic Process
In this research, alumina - titania nanoparticles in thin-film forms and in different alcoholic environments such as ethanol, butanol and isopropanol were coated on API5-GrB steel substrates by electrophoretic process. coating operations was performed at different voltages, as well as chronoamperometry method was used to investigation of the mechanism of nucleation and surface qualities of coatings. in order to measurement of coating thickness and adhesion to the substrate, optical microscope was used. in the measurment the weight of the coating test showed that the weight of the coating increased via increasing voltage. by applying low voltage, the highest coverage was created in the presence of the butanol suspension, but via increasing the voltage, the maximum coverage was formed in the presence of the ethanol suspension. in the measurement results of coatings weight and their quality viewing showed that coating weight changes with voltage (electrical field intensity) and time follow the Hamaker relationship.
Iranian Journal of Surface Science and Engineering, No. 30, 2017
33 - 43
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