Electroless deposition process for zirconium and zirconium...

Details Electroless deposition process for zirconium and zirconium... Electroless deposition process for zirconium and zirconium...

G - Physics

21

C

117/77

G21C 3/20 (2006.01) C23C 3/00 (1980.01)

Patent

CA 1128376

24 NF 04282 ABSTRACT OF THE DISCLOSURE A method is disclosed for preventing stress corrosion cracking or metal embrittlement of a zirconium alloy container that is to be coated on the inside surface with a layer of a metal such as copper, a copper alloy, nickel, or iron and used for holding nuclear fuel material as a nuclear fuel element. The zirconium material is etched in an etchant solution, desmutted mechanically or ultrasonically, oxidized to form an oxide coating on the zirconium, cleaned in an aqueous alkaline cleaning solution, activated for electroless deposition of a metal layer and contacted with an electroless metal plating solution. This method provides a boundary layer of zirconium oxide between the zirconium container and the metal layer.

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