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Title: METHOD OF ELECTROPLATING ON URANIUM

Abstract

This patent relates to a preparation of metallic uranium surfaces for receiving coatings, particularly in order to secure adherent electroplated coatings upon uranium metal. In accordance with the invention the uranium surface is pretreated by degreasing in trichloroethylene, followed by immersion in 25 to 50% nitric acid for several minutes, and then rinsed with running water, prior to pickling in trichloroacetic acid. The last treatment is best accomplished by making the uranium the anode in an aqueous solution of 50 per cent by weight trichloroacetic acid until work-distorted crystals or oxide present on the metal surface have been removed and the basic crystalline structure of the base metal has been exposed. Following these initial steps the metallic uranium is rinsed in dilute nitric acid and then electroplated with nickel. Adnerent firmly-bonded coatings of nickel are obtained.

Inventors:
;
Issue Date:
OSTI Identifier:
4212402
Patent Number(s):
2884364
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25D - PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16L - PIPES
NSA Number:
NSA-13-022506
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
METALLURGY AND CERAMICS; ACETIC ACID; ADHESION; ANODES; CLEANING; COATING; ELECTROLYSIS; ELECTROPLATING; ETCHING; ETHYLENE; NICKEL; NITRIC ACID; ORGANIC CHLORINE COMPOUNDS; OXIDES; PREPARATION; SURFACES; URANIUM

Citation Formats

Rebol, E W, and Wehrmann, R F. METHOD OF ELECTROPLATING ON URANIUM. United States: N. p., 1959. Web.
Rebol, E W, & Wehrmann, R F. METHOD OF ELECTROPLATING ON URANIUM. United States.
Rebol, E W, and Wehrmann, R F. Tue . "METHOD OF ELECTROPLATING ON URANIUM". United States.
@article{osti_4212402,
title = {METHOD OF ELECTROPLATING ON URANIUM},
author = {Rebol, E W and Wehrmann, R F},
abstractNote = {This patent relates to a preparation of metallic uranium surfaces for receiving coatings, particularly in order to secure adherent electroplated coatings upon uranium metal. In accordance with the invention the uranium surface is pretreated by degreasing in trichloroethylene, followed by immersion in 25 to 50% nitric acid for several minutes, and then rinsed with running water, prior to pickling in trichloroacetic acid. The last treatment is best accomplished by making the uranium the anode in an aqueous solution of 50 per cent by weight trichloroacetic acid until work-distorted crystals or oxide present on the metal surface have been removed and the basic crystalline structure of the base metal has been exposed. Following these initial steps the metallic uranium is rinsed in dilute nitric acid and then electroplated with nickel. Adnerent firmly-bonded coatings of nickel are obtained.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {4}
}