ES349838A1 - Method of Electroplating - Google Patents

Method of Electroplating

Info

Publication number
ES349838A1
ES349838A1 ES349838A ES349838A ES349838A1 ES 349838 A1 ES349838 A1 ES 349838A1 ES 349838 A ES349838 A ES 349838A ES 349838 A ES349838 A ES 349838A ES 349838 A1 ES349838 A1 ES 349838A1
Authority
ES
Spain
Prior art keywords
electrolytic
plating
microns
electro
base alloy
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.)
Expired
Application number
ES349838A
Other languages
Spanish (es)
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of ES349838A1 publication Critical patent/ES349838A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/02—Fuel elements
    • G21C3/04—Constructional details
    • G21C3/16—Details of the construction within the casing
    • G21C3/20—Details of the construction within the casing with coating on fuel or on inside of casing; with non-active interlayer between casing and active material with multiple casings or multiple active layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D21/00—Machines or devices for shearing or cutting tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H73/00—Stripping waste material from cores or formers, e.g. to permit their re-use
    • 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
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • 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
    • 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
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
    • 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
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/623—Porosity of the layers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/02—Dosimeters
    • G01T1/10—Luminescent dosimeters
    • G01T1/11—Thermo-luminescent dosimeters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

A method of electro-plating an object at least the surface of which consists of U, Pu, U-base alloy or Pu-base alloy (e.g. a rod or plate intended to serve as nuclear fuel) comprises the successive steps of electro-depositing a layer of a metal (e.g. Ni or Cu) which adheres to the surface of the object electro-depositing at least one layer of Sn, Zn, Pb or In mechanically surface flattening the surface whereby the pores and/or surface irregularities are closed, a smooth outer surface is obtained and the Sn, Zn, Pb or In is rendered impervious to outside agents, the total thickness of the plating after flattening being greater than 55 microns. In an example a plate of U-base alloy is (a) degreased and pickled by degreasing with trichloroethylene, electrolytic degreasing in a solution containing a wetting agent and 40 g/1 NaOH at 5 to 10 A/dm , pickling with HNO 3 , HCl and then HNO 3 (b) electrolytically plated with 40 to 50 microns of Ni by electrically connecting it as a negative pole followed by dipping it in a bath containing nickel sulphate and chloride and KA1(SO 4 ) 2 . 12H 2 O at 45 C. and at a pH of 3 0À25, the current density being progressively increased to 2À5 A/dm2 (c) washed, dried weighed, thickness measured and surface irregularities removed (d) heat-treated to enhance the adhesion of the Ni (e) retouched to fill in any flaws in the Ni layer by electrolytic "spot" deposition of Ni or Sn (f) prepared for Sn plating by electrolytic degreasing in an alkaline bath (g) electrolytically plated with 40 microns of Sn by dipping it at low voltage in a bath containing Na 2 SnO 3 .3H 2 O and NaOH at 70 degrees and increasing the current density to 2À5A/dm2 (h) washed, dried, surface irregularities removed by electrolytic spot deposition of Sn followed by buffing or polishing and (i) mechanically flattened by rotary brushing, the brush may contain a fine grit abrasive.
ES349838A 1967-01-31 1968-01-27 Method of Electroplating Expired ES349838A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR93274A FR1523216A (en) 1967-01-31 1967-01-31 Improvements in electrolytic coating processes and products coated according to these processes

Publications (1)

Publication Number Publication Date
ES349838A1 true ES349838A1 (en) 1970-11-16

Family

ID=8624659

Family Applications (1)

Application Number Title Priority Date Filing Date
ES349838A Expired ES349838A1 (en) 1967-01-31 1968-01-27 Method of Electroplating

Country Status (7)

Country Link
BE (1) BE708629A (en)
CH (1) CH492030A (en)
ES (1) ES349838A1 (en)
FR (1) FR1523216A (en)
GB (1) GB1184393A (en)
IL (1) IL29218A (en)
LU (1) LU55342A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104213160A (en) * 2014-08-22 2014-12-17 常熟市董浜镇徐市鸿磊五金机械厂 Hardware electroplating process

Also Published As

Publication number Publication date
GB1184393A (en) 1970-03-18
BE708629A (en) 1968-05-02
LU55342A1 (en) 1968-04-09
FR1523216A (en) 1968-05-03
CH492030A (en) 1970-06-15
IL29218A (en) 1971-10-20

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