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Title: Method For Creating Corrosion Resistant Surface On An Aluminum Copper Alloy

Abstract

A method for treating the surface of aluminum alloys hang a relatively high copper content is provided which includes the steps of removing substantially all of the copper from the surface, contacting the surface with a first solution containing cerium, electrically charging the surface while contacting the surface in an aqueous molybdate solution, and contacting the surface with a second solution containing cerium. The copper is substantially removed from the surface in the first step either by (i) contacting the surface with an acidic chromate solution or by (ii) contacting the surface with an acidic nitrate solution while subjecting the surface to an electric potential. The corrosion-resistant surface resulting from the invention is excellent, consistent and uniform throughout the surface. Surfaces treated by the invention may often be certified for use in salt-water services.

Inventors:
 [1];  [2];  [3]
  1. (Playa del Rey, CA)
  2. (Jingshou, CN)
  3. (San Dimas, CA)
Issue Date:
Research Org.:
Sandia Corp
OSTI Identifier:
879272
Patent Number(s):
5635084
Application Number:
08/447075
Assignee:
University of Southern California (Los Angeles, CA) OSTI
DOE Contract Number:  
AH-1623
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Mansfeld, Florian B., Wang, You, and Lin, Simon H. Method For Creating Corrosion Resistant Surface On An Aluminum Copper Alloy. United States: N. p., 1997. Web.
Mansfeld, Florian B., Wang, You, & Lin, Simon H. Method For Creating Corrosion Resistant Surface On An Aluminum Copper Alloy. United States.
Mansfeld, Florian B., Wang, You, and Lin, Simon H. Tue . "Method For Creating Corrosion Resistant Surface On An Aluminum Copper Alloy". United States. https://www.osti.gov/servlets/purl/879272.
@article{osti_879272,
title = {Method For Creating Corrosion Resistant Surface On An Aluminum Copper Alloy},
author = {Mansfeld, Florian B. and Wang, You and Lin, Simon H.},
abstractNote = {A method for treating the surface of aluminum alloys hang a relatively high copper content is provided which includes the steps of removing substantially all of the copper from the surface, contacting the surface with a first solution containing cerium, electrically charging the surface while contacting the surface in an aqueous molybdate solution, and contacting the surface with a second solution containing cerium. The copper is substantially removed from the surface in the first step either by (i) contacting the surface with an acidic chromate solution or by (ii) contacting the surface with an acidic nitrate solution while subjecting the surface to an electric potential. The corrosion-resistant surface resulting from the invention is excellent, consistent and uniform throughout the surface. Surfaces treated by the invention may often be certified for use in salt-water services.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {6}
}

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