| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a zinc-nickel alloy plating solution that can attain a plated layer having corrosion resistance equal to or above that of a cadmium plating or a cadmium-titanium alloy plating but not containing cadmium as a harmful material at all, can use a coating film layer not containing 6-valent chromium as a harmful material at all as a protective layer protecting the plated layer and can apply plating capable of reliably suppressing the occurrence of hydrogen embrittlement on a high strength steel; and to provide a zinc-nickel alloy plating method. <P>SOLUTION: The zinc-nickel alloy plating solution containing zinc ion, nickel ion, sodium ion and hydroxide ion in the solution is kept so that a water-soluble cationic polymer is controlled not to exceed 100 mg in 1 L solution. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
