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Title: Method for providing uranium articles with a corrosion-resistant anodized coating

Abstract

Uranium articles are provided with anodized oxide coatings in an aqueous solution of an electrolyte selected from the group consisting of potassium phosphate, potassium hydroxide, ammonium hydroxide, and a mixture of potassium tetraborate and boric acid. The uranium articles are anodized at a temperature greater than about 75/sup 0/C with a current flow of less than about 0.036 A/cm/sup 2/ of surface area while the pH of the solution is maintained in a range of about 2 to 11.5. The pH values of the aqueous solution and the low current density utilized during the electrolysis prevent excessive dissolution of the uranium and porosity in the film or watering. The relatively high temperature of the electrolyte bath inhibits hydration and the attendant deleterious pitting so as to enhance corrosion resistance of the anodized coating.

Inventors:
;
Issue Date:
OSTI Identifier:
5683454
Application Number:
ON: DE82004446
Assignee:
Dept. of Energy TIC; NTS-82-003982; ERA-07-030166; EDB-82-071738
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; URANIUM; ANODIZATION; CORROSION RESISTANCE; URANIUM OXIDES; ACTINIDE COMPOUNDS; ACTINIDES; CHALCOGENIDES; CHEMICAL COATING; CORROSION PROTECTION; DEPOSITION; ELECTROCHEMICAL COATING; ELECTROLYSIS; ELEMENTS; LYSIS; METALS; OXIDES; OXYGEN COMPOUNDS; SURFACE COATING; URANIUM COMPOUNDS; 360101* - Metals & Alloys- Preparation & Fabrication

Citation Formats

Waldrop, F.B., and Washington, C.A. Method for providing uranium articles with a corrosion-resistant anodized coating. United States: N. p., 1981. Web.
Waldrop, F.B., & Washington, C.A. Method for providing uranium articles with a corrosion-resistant anodized coating. United States.
Waldrop, F.B., and Washington, C.A. Wed . "Method for providing uranium articles with a corrosion-resistant anodized coating". United States.
@article{osti_5683454,
title = {Method for providing uranium articles with a corrosion-resistant anodized coating},
author = {Waldrop, F.B. and Washington, C.A.},
abstractNote = {Uranium articles are provided with anodized oxide coatings in an aqueous solution of an electrolyte selected from the group consisting of potassium phosphate, potassium hydroxide, ammonium hydroxide, and a mixture of potassium tetraborate and boric acid. The uranium articles are anodized at a temperature greater than about 75/sup 0/C with a current flow of less than about 0.036 A/cm/sup 2/ of surface area while the pH of the solution is maintained in a range of about 2 to 11.5. The pH values of the aqueous solution and the low current density utilized during the electrolysis prevent excessive dissolution of the uranium and porosity in the film or watering. The relatively high temperature of the electrolyte bath inhibits hydration and the attendant deleterious pitting so as to enhance corrosion resistance of the anodized coating.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}