| 摘要 |
In a process for the electroless plating of nickel onto a substrate made of aluminum or an aluminum alloy, an aqueous acidic solution containing as an essential component a palladium salt is used as an activator of the substrate prior to the nickel plating of the substrate. The activating solution contains a palladium salt, an alkali metal fluoride or hydrofluoric acid, a carboxylic acid complexing agent, an alkali metal salt of gluconic acid, an iron salt, a nickel salt, and deionized water.
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