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:
Jan. 10, 1984
Filed:
Mar. 18, 1982
Applicant:
Inventors:
Robert E Fishter, Boca Raton, FL (US);
Henry Lada, Lake Park, FL (US);
Victoria M Putnam, Jupiter, FL (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; B44C / ;
U.S. Cl.
CPC ...
156656 ; 134-3 ; 156664 ; 156665 ; 252 792 ;
Abstract
Disclosed is a method for stripping nickel aluminide coatings of up 10 weight percent aluminum from nickel base alloy substrates at room temperature. The preferred solution contains by volume percent 43-45 nitric acid, 7-12 hydrochloric acid, 0.1-1.5 sulfuric acid, balance water; it also contains 0.008-0.025 moles per liter of ferric chloride, at least 0.016 moles per liter copper sulfate. The ratio between the sulfate and chloride is 2:1 or greater.