| 摘要 |
A process for the deposition of a nickel coating directly on articles of aluminum or aluminum alloys, without need to preplate with an intermediate layer. After immersing the cleaned aluminum article for about one minute at room temperature in an activating solution containing a nickel, cobalt or chromium salt, a cyanide, and ammonium hydroxide to condition and prepare the metal surface, the article is transferred to an electrolytic bath and the article is plated with nickel by electrolytic action. If desired, a chromium coating may then be superimposed on the nickel, using conventional procedures.
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