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

Patent · Wed Jan 07 04:00:00 EST 1981

OSTI ID:5683454

Waldrop, F B; Washington, C A

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.

• DOE Contract Number: W-7405-ENG-26
• Assignee: Dept. of Energy
• Patent Number(s): None
• Application Number: ON: DE82004446
• OSTI ID: 5683454
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ACTINIDE COMPOUNDS
ACTINIDES
ANODIZATION
CHALCOGENIDES
CHEMICAL COATING
CORROSION PROTECTION
CORROSION RESISTANCE
DEPOSITION
ELECTROCHEMICAL COATING
ELECTROLYSIS
ELEMENTS
LYSIS
METALS
OXIDES
OXYGEN COMPOUNDS
SURFACE COATING
URANIUM
URANIUM COMPOUNDS
URANIUM OXIDES