Long-service-life high-speed acid environment protection bright chemical nickel plating additive and use method thereof

Abstract

The invention relates to a long-service-life high-speed acid environment protection bright chemical nickel plating additive and a use method thereof. A complexing agent in the additive is a mixture of three kinds or more than three kinds of materials in lactic acid, malic acid, citric acid, glycine, glycollic acid and salicylic acid through being mixed according to any proportion. A stabilizing agent is a composite stabilizing agent prepared from thiosemicarbazone derivatives and oxygenated chemicals according to a mass ratio of 1 / 10 to 30, and the oxygenated chemicals are iodate or molybdateor bromate, an accelerating agent is one kind of materials in glutaric acid or adipic acid. A buffering agent is prepared from either boric acid or sodium tetraborate and either acetic acid or sodiumacetate according to a mass ratio of 1 / 2 to 5. The chemical nickel plating additive of the invention can realize the mass production. When being used, the chemical nickel plating additive is directlyadded into water to be diluted according to the proportion for use, and the operation is simple. After the use for 8 to 10 periods, the plating layer performance and the speed are still stable, the stability of plating liquid is good, nickel is not separated out from the wall of a tank, the phosphorus content of the plating layer is stabilized ranged from 5 to 8 percent, and the plating layer is bright.

Description

technical field

[0001] The invention relates to the technical field of electroless nickel plating treatment on metal surfaces, in particular to a long-life, high-speed, acidic, environment-friendly and bright electroless nickel plating additive and a use method thereof. Background technique

[0002] Electroless nickel plating, also known as electroless nickel plating, is a film-forming technology that deposits a metal coating on the metal surface by means of a self-catalyzed chemical reaction in a solution where a metal salt and a reducing agent coexist.

[0003] The electroless nickel-phosphorus alloy coating has comprehensive physical and chemical properties such as excellent throwing property, high hardness, good wear resistance and corrosion resistance. At present, it is almost difficult to find an industrial field that does not use electroless nickel plating technology. According to reports, the proportion of electroless nickel plating in various industries is roughly a...

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