Gold plating of chromium

摘要

Process of producing a thin, adherent, durable gold plate on a chromium surface of an article comprises the steps of conventional cleaning of the article, activation of the chromium surface, rinsing preferably with an acid dip, plating in a gold plating solution at optimum conditions of about five to ten seconds, and about 25 to 75 amps per square foot, rinsing and thereafter heating the gold plated article at temperatures of about 200 degrees F. to 900 degrees F for a period of about two minutes to two hours. The gold plate is in the range of about on e to ten millionths of an inch. The activating soln contains NaOH, KCN and EDTA and is at room temp to 120 degrees F. The article is cathodically treated for 15 sec. - 60 secs. at 6-9v in this soln.