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Title: Zinc phosphate conversion coatings

Abstract

Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate .alpha.-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal.

Inventors:
 [1]
  1. Wading River, NY
Issue Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
OSTI Identifier:
870839
Patent Number(s):
5604040
Assignee:
Associated Universities, Inc. (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
zinc; phosphate; conversion; coatings; producing; metals; exhibit; enhanced; corrosion; prevention; characteristics; prepared; addition; transition-metal-compound; promoter; comprising; manganese; iron; cobalt; nickel; copper; compound; electrolyte; polyacrylic; acid; polymethacrylic; polyitaconic; poly-l-glutamic; phosphating; solution; improved; incorporation; thermal; treatment; generate; alpha; -phase; anhydrous; improves; qualities; resulting; coated; metal; producing metal; polyacrylic acid; zinc phosphate; thermal treatment; acrylic acid; producing metals; polyitaconic acid; phosphate conversion; exhibit enhanced; coated metal; enhanced corrosion; methacrylic acid; conversion coatings; /428/148/

Citation Formats

Sugama, Toshifumi. Zinc phosphate conversion coatings. United States: N. p., 1997. Web.
Sugama, Toshifumi. Zinc phosphate conversion coatings. United States.
Sugama, Toshifumi. Wed . "Zinc phosphate conversion coatings". United States. https://www.osti.gov/servlets/purl/870839.
@article{osti_870839,
title = {Zinc phosphate conversion coatings},
author = {Sugama, Toshifumi},
abstractNote = {Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate .alpha.-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}

Patent:

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Works referenced in this record:

Nature of interfacial interaction mechanisms between polyacrylic acid macromolecules and oxide metal surfaces
journal, December 1984


Influence of the high temperature treatment of zinc phosphate conversion coatings on the corrosion protection of steel
journal, January 1991


Fundametal Characteristics of Zinc Phosphate Coating [リン酸亜鉛皮膜の基本的性質]
journal, January 1980


Aspects of the adhesion and corrosion resistance of polyelectrolyte-chemisorbed zinc phosphate conversion coatings
journal, January 1988


Phenylene sulfide polymers. III. The synthesis of linear polyphenylene sulfide
journal, April 1962


Chemisorption mechanism and effect of polyacrylic acid on the improvement in bond durability of zinc phosphate-to-polymer adhesive joints
journal, February 1987


Cobalt and Nickel Cations as Corrosion Inhibitors for Galvanized Steel
journal, February 1981


Corrosion protection of steel and bond durability at polyphenylene sulfide-to-anhydrous zinc phosphate interfaces
journal, July 1992


Advanced poly(acrylic)acid-modified zinc phosphate conversion coatings: use of cobalt and nickel cations
journal, February 1992