Abstract
Measurements of the surface potential under standardized condition of a number of metals such as Al, Zn, Cr, Ni, Ti, Cu, Fe, Ag, Au, Pt and brass, together with determinations of the adhesive strength of these metals under the same condition for polar and nonpolar organic coatings have been carried out. As a result, it is revealed that for metals which are lower in surface potential and accordingly less surface-oxidizable than Cu, adhesion strength increases almost proportinally to surface potential, but on the contrary, for metals having higher surface potential than Cu, adhesive strength is inversely proportional to surface potential. This latter inverse relation may be interpreted as due to the effect of surface-oxidation films.
