抄録
Phosphorus contents of nickel plating films obtained from electroless nickel plating baths containing various kinds of organic salts were determined.
Corrosion resistances of electroless nickel plating films, having different phosphorus contents from plating baths of the same compositions (but of different pH values), were measured by a few sorts of electrochemical methods and dissolution tests in solutions of IN-H2SO4, 5%-NaCl, and IN-NaOH.
As the results, the corrosion resistances of the plating films increased with the increase of phosphorus contents, but passivity effects were not found in each film containing phosphorus.
