| abstract |
PROBLEM TO BE SOLVED: To form a conductive film such as silver, copper, or tin firmly on a specific light metal selected from aluminum, magnesium, and titanium, which easily form a nonconductive state. SOLUTION: A method for forming a conductive film such as silver, copper, or tin on a light metal via a base film, wherein the base film is a nickel-phosphorus film, and the base film is formed into a predetermined complex. By using an electroplating bath containing an agent and a predetermined surfactant, it is possible to firmly form a base film on a specific light metal that easily forms a non-conductive state. Therefore, a conductive film is formed on the light metal. Can be formed with good adhesion. [Selection figure] None |