The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1976
Filed:
Sep. 26, 1975
William P Kampert, Lower Burrell, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
An improved process for metal plating on aluminum wherein a zinc immersion coating is applied to the aluminum to dissolve undesirable oxides on the aluminum surface. The improvement comprises a controlled dissolution of the zinc layer followed by immediate plating of the surface with another metal such as nickel. The dissolution of the zinc surface is monitored by immersing the zinc-coated aluminum, together with a nickel electrode, in an electrolytic bath and monitoring the electrode potential difference between the electrodes. The subsequent metal plating step is commenced when the electrode potential difference between the electrodes falls about 100-200 millivolts below the initial electrode potential difference at the particular temperature and bath composition.