Influence of electrolyzed oxidizing water on the surface as rolled material of oxygen free copper - The effects of ultrasonic agitation -

This paper discusses etching performance and surface roughening performance of electrolyzed oxidizing water (hereinafter it is referred as EO water) on the rolled material of oxygen free copper with ultrasonic. Firstly, etching experiment against the surface as the rolled material of oxygen free copper, using Na2SO4-EO water, NaCI-EO water and chemicals, and with ultrasonic, was carried out. The results showed the ultrasonic agitation is effective for EO water compared with chemicals. Next, by the observation using SEM image, the effects of ultrasonic agitation on the surface micro shape was clarified. The following was clarified from the experimental results. About non-heat treated surface, when using NaCI-EO water, the surface becomes roughest. About heat treated surface, when using Na2SO4-EO water compared with H2SO4 solution, there is not occurrence of alien substance and the surface becomes smooth. Thirdly, in order to elucidate the effects of ultrasonic agitation, experiment on characteristics change of EO water with using ultrasonic, and measurement of oxygen bubble was carried out. By this study, we received the suggestion that EO water could be applied to the surface treatment of oxygen free copper. © 2021 Japan Society for Precision Engineering. All rights reserved.