抄録
In order to observe the cathode behavior of the surface of aluminum treated by the mixed solution of TiO2 and HCl, the cathode polarization potentials in various electrolytes are measured.
A series of experiments about four electrolytes CuSO4, NiSO4⋅(NH4)2SO4, ZnSO4, FeSO4⋅FeCl2, done by changing concentration, amount of buffer-and addition-reagents, and temperature of electrolytes, reveals that the potential is much affected by the stortage of Cu2+ and N2+, and that the solution temperature of 20°C is preferable.
When it is necessary to change the potential of the cathode surface, the reading of which generally lies betweem those of ordinary aluminum surface and FeCl-HCl solution, control of pH value and amount of addition of buffer and other reagents should properly be considered.
