Stock material or miscellaneous articles – Composite – Of metal
Reexamination Certificate
2000-02-22
2002-09-17
Sheehan, John (Department: 1742)
Stock material or miscellaneous articles
Composite
Of metal
C428S472100, C428S472200, C148S273000, C148S275000, C148S285000
Reexamination Certificate
active
06451443
ABSTRACT:
REFERENCE TO A “MICROFICHE APPENDIX”
Not applicable
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to coatings for aluminum alloys. More particularly, the present invention relates to corrosion-resistant coatings for aluminum alloys.
2. General Background of the Invention
A good background of the invention can be found in the paper entitled “Chromium Free Conversion Coating for Aluminum” and attached to U.S. Provisional Patent Application Ser. No. 60/120,611 which paper is incorporated herein by reference.
Also incorporated herein by reference are International Publication No. WO 99/41305, International application no. PCT/US99/03470, and U.S. patent application Ser. No. 09/236,482 now U.S. Pat. No. 6,069,197.
BRIEF SUMMARY OF THE INVENTION
The apparatus of the present invention solves the problems confronted in the art in a simple and straightforward manner. What is provided are corrosion-resistant coatings for aluminum alloys including lithium molybdate and cerium and methods of applying these coatings to aluminum alloys.
BRIEF DESCRIPTION OF THE TABLES
Table 1 Forming chemical film with lithium salts; and
Table 2 Cerium chloride coating solution.
REFERENCES:
patent: 3945899 (1976-03-01), Nikaido et al.
patent: 5582654 (1996-12-01), Mansfield et al.
patent: 5756218 (1998-05-01), Buchheit et al.
patent: 6248184 (2001-06-01), Dull et al.
patent: 04302296 (1993-10-01), None
Garvey, Smith, Nehrbass & Doody, L.L.C.
Nehrbass Seth M.
Oltmans Andrew L.
Sheehan John
University of New Orleans Research and Technology Foundation, In
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