Plating method for a nickel-titanium alloy member

Details Plating method for a nickel-titanium alloy member Plating method for a nickel-titanium alloy member

1994-08-29

1995-11-07

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Forming multiple superposed electrolytic coatings

205181, 205182, 205212, 205216, 205219, C25D 514, C25D 538, C25D 540

Patent

active

054645247

ABSTRACT:
A plating method for a nickel-titanium alloy member is provided which comprises the steps of: subjecting a nickel-titanium alloy member to an anodic electrolyzing treatment and a cathodic electrolyzing treatment in succession by using an electrolyte containing hydrochloric acid as an essential component thereof, in particular, an electrolyte having a chloride ion concentration of 0.1 mol/l or more and a pH value of 2 or less, or an electrolyte having a chloride ion concentration of 0.4 mol/l or more, or still preferably, an electrolyte having a chlorine ion concentration of 0.3 mol/l or more and a pH value of 2 or less; strike plating the treated nickel-titanium alloy member with a desired metal; and electroplating the struck nickel-titanium alloy member with a desired metal. The adhesion between the nickel-titanium alloy member and a plating layer is very good.

REFERENCES:
patent: 4525250 (1985-06-01), Fahrmbacher-Lutz et al.

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