| 摘要 |
PURPOSE:To obtain the titled soln. forming uniformly a dense Co-Ni alloy film having satisfactory adhesion by striking by using nickel chloride, cobalt chloride and hydrochloric acid. CONSTITUTION:This Co-Ni alloy striking soln. contains nickel chloride, cobalt chloride and hydrochloric acid or further contains a surfactant as required. When the soln. is used, a dense Co-Ni alloy film having satisfactory adhesion can be uniformly formed by striking as an underlayer on which plating with a noble metal is carried out. A thin noble metallic film having satisfactory heat resistance and adhesion can be formed on the underlayer by plating at a low cost.
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