FR2231771A1 - Corrosion protection of uranium radiation shields - by cleaning surface then electrode positing nickel, zinc, cadmium or nickel-tin alloy - Google Patents

Corrosion protection of uranium radiation shields - by cleaning surface then electrode positing nickel, zinc, cadmium or nickel-tin alloy

Info

Publication number
FR2231771A1
FR2231771A1 FR7319408A FR7319408A FR2231771A1 FR 2231771 A1 FR2231771 A1 FR 2231771A1 FR 7319408 A FR7319408 A FR 7319408A FR 7319408 A FR7319408 A FR 7319408A FR 2231771 A1 FR2231771 A1 FR 2231771A1
Authority
FR
France
Prior art keywords
nickel
corrosion protection
cadmium
zinc
radiation shields
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7319408A
Other languages
French (fr)
Other versions
FR2231771B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie pour lEtude et la Realisation de Combustibles Atomiques SAS
Original Assignee
Compagnie pour lEtude et la Realisation de Combustibles Atomiques SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie pour lEtude et la Realisation de Combustibles Atomiques SAS filed Critical Compagnie pour lEtude et la Realisation de Combustibles Atomiques SAS
Priority to FR7319408A priority Critical patent/FR2231771A1/en
Publication of FR2231771A1 publication Critical patent/FR2231771A1/en
Application granted granted Critical
Publication of FR2231771B1 publication Critical patent/FR2231771B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/46—Pretreatment of metallic surfaces to be electroplated of actinides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Uranium and its alloys are pretreated in three stages: solvent degreasing; anodic degreasing at 5 A/dm2 in alkali/cyanide/EDTA soln; and anodic etch at 5 A/dm2 in aq. soln. contg. an alcohol and an acid. These pretreatment formulations exclude halide ions. The treated surface is suitable for electroplating with Ni, pref. from a sulphamate soln, Cd, Zn, or Sn/Ni alloy. Treatment is a corrosion protection for uranium radiation shields in nuclear and aero applications.
FR7319408A 1973-05-29 1973-05-29 Corrosion protection of uranium radiation shields - by cleaning surface then electrode positing nickel, zinc, cadmium or nickel-tin alloy Granted FR2231771A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7319408A FR2231771A1 (en) 1973-05-29 1973-05-29 Corrosion protection of uranium radiation shields - by cleaning surface then electrode positing nickel, zinc, cadmium or nickel-tin alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7319408A FR2231771A1 (en) 1973-05-29 1973-05-29 Corrosion protection of uranium radiation shields - by cleaning surface then electrode positing nickel, zinc, cadmium or nickel-tin alloy

Publications (2)

Publication Number Publication Date
FR2231771A1 true FR2231771A1 (en) 1974-12-27
FR2231771B1 FR2231771B1 (en) 1977-11-10

Family

ID=9120137

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7319408A Granted FR2231771A1 (en) 1973-05-29 1973-05-29 Corrosion protection of uranium radiation shields - by cleaning surface then electrode positing nickel, zinc, cadmium or nickel-tin alloy

Country Status (1)

Country Link
FR (1) FR2231771A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884364A (en) * 1946-05-14 1959-04-28 Elmer W Rebol Method of electroplating on uranium
US2999817A (en) * 1960-08-15 1961-09-12 Du Pont Azeotropic composition
US3275535A (en) * 1966-03-22 1966-09-27 Jerry R Lundquist Method of preparing uranium for nickel plating
US3288636A (en) * 1962-10-27 1966-11-29 Interatom Process for coating uranium alloy members

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884364A (en) * 1946-05-14 1959-04-28 Elmer W Rebol Method of electroplating on uranium
US2999817A (en) * 1960-08-15 1961-09-12 Du Pont Azeotropic composition
US3288636A (en) * 1962-10-27 1966-11-29 Interatom Process for coating uranium alloy members
US3275535A (en) * 1966-03-22 1966-09-27 Jerry R Lundquist Method of preparing uranium for nickel plating

Also Published As

Publication number Publication date
FR2231771B1 (en) 1977-11-10

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Legal Events

Date Code Title Description
ST Notification of lapse