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:
May. 22, 1984
Filed:
Aug. 23, 1982
Robert A Tremmel, Woodhaven, MI (US);
OMI International Corporation, Warren, MI (US);
Abstract
An aqueous bath and process suitable for the electrodeposition of bright, high-leveling nickel-iron alloy deposits on a conductive substrate comprising controlled, effective amounts of nickel ions, iron ions, an iron solubilizing agent, a buffering agent, a primary brightening agent, hydrogen ions to provide a pH of about 2.6 to 4.5 and at least one bath soluble additive agent present in an amount of at least about 2 mg/l, selected from propargyl sulfonic acid, 1-butyne-3-sulfonic acid, 1-pentyne-5-sulfonic acid, 2-butyne-1-sulfonic acid and the alkali metal and ammonium salts thereof. A particularly preferred additive agent comprises propargyl sulfonic acid and the alkali metal and ammonium salts thereof. The invention further contemplates the use of the aforementioned additive agent as a replenishing agent for nickel-iron electroplating solutions and as a rejuvenating agent for restoring the activity and capacity of such aqueous baths to deposit bright, high-leveling nickel-iron alloy deposits.