Zirconium and zirconium alloy passivation process

Details Zirconium and zirconium alloy passivation process Zirconium and zirconium alloy passivation process

1991-09-16

1993-11-23

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Treating substrate prior to coating

205322, C25D 1134

Patent

active

052641090

ABSTRACT:
A zirconium or zirconium alloy passivation process comprises providing an electrolyte which is capable of removing nickel, nickel alloys and alloys containing nickel from the surface of a zirconium or zirconium alloy article, keeping the dissolved metal in solution while simultaneously anodizing the article surfaces. Such nickel, if not removed provides a window for hydride accumulation to occur, detrimentally affecting the alloy properties when subject to a nuclear reactor environment. An article placed in the electrolyte in proximity to a cathode and connected to a power source has the trace nickel, nickel alloys and alloys containing nickel removed to background levels and reduces the potential for hydride accumulation within the article in a nuclear reactor environment, and provides for increased article life.

REFERENCES:
patent: 1787672 (1931-01-01), Davenport
patent: 2711389 (1955-06-01), Beach et al.
patent: 2938841 (1960-05-01), Dale
patent: 3063917 (1962-11-01), Barto
patent: 3159556 (1964-12-01), McLean et al.
patent: 3259558 (1966-07-01), Hagiwara et al.
patent: 3502549 (1970-03-01), Charveriat
patent: 3556870 (1971-01-01), Debray et al.
patent: 3864220 (1975-07-01), Denning et al.
patent: 3909370 (1975-09-01), Videm et al.
patent: 4017368 (1977-04-01), Wax et al.
patent: 4137131 (1979-04-01), Donaghy
patent: 4214952 (1980-07-01), Sato et al.
patent: 4589929 (1986-05-01), Steinberg
patent: 4755265 (1988-07-01), Young
patent: 4857803 (1989-08-01), Anderson, Sr.

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