抄録
Supersonics (frequency 620 K. C.) have been radiated upon the anodes of Al in oxalic acid solution, that of Cu in HCl and CuSO4 and that of Fe in H2SO4 solution.
By the radiation of supersonics passivation has been promoted in the case of Al, whereas in the case of Copper and iron, it has been retarded.
Peculiar phenomena occured in the latter case, i. e., higher bath voltage has been required in dissolving copper and iron from the anode at very low current densities when exposed to the radiation of suppersonics.
