Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2005-04-19
2005-04-19
Zimmerman, John J. (Department: 1775)
Stock material or miscellaneous articles
Composite
Of metal
C428S469000, C428S696000, C427S327000, C427S388100, C148S275000, C148S277000, C148S283000, C148S285000
Reexamination Certificate
active
06881491
ABSTRACT:
An aluminum alloy article is cleaned to remove oxides and organic matter from a coatable surface, coated with a composition comprising an organic resin and a fluorine compound, and then heated to an elevated temperature to decompose the organic resin and at least a portion of the fluorine compound. After heating the coated surface is left with a protective oxyfluoride film that prevents blistering and hydrogen pickup and promotes hydrogen degassing from the article.
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Metals Handbook, 9th ed., vol. 14, “Cleaning”, pp. 248-249, 1988; vol. 5,“Chemical Cleaning”, pp. 788-790, 1994.*
Stroup, P.T. Atmospheric Control in the Heat Treatment of Aluminum Products, Controlled Atmospheres, 1942, American Society for Metals, Cleveland, Ohio.
Harenski Joseph P.
Jankosky Sally A.
Kaufold Roger W.
Kolek Paula L.
Opalka Susanne M.
Alcoa Inc.
Cillo Daniel P.
Eckert Seamans Cherin & Mellott , LLC
Topolosky Gary P.
Zimmerman John J.
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