The information of high corrosion resistance of electroless nickel plating

high corrosion resistance of electroless nickel plating
High corrosion resistance of electroless nickel plating decription:Electroless nickel plating, electroless plating, the development of one of the fastest. Salt, bath generally nickel sulfate, nickel acetate the Sub phosphate, sodium borohydride, borane, hydrazine, etc. as a reducing agent, and then add various additives. Operate in the acidic solution or close to room temperature of 90 ° C neutral solution, alkaline solution. Nickel – phosphorus, electroless nickel – boron two categories is divided into different reductant. Coating uniformity, corrosion resistance, hardness, solderability, magnetic, decorative show its superiority.
Without external current through the redox layer of nickel deposited on the surface of metal parts. Used to improve the corrosion resistance and abrasion resistance, and increase the luster and beauty. Suitable for small parts of tubular or complex shape, bright nickel plating, no longer have been polished. Generally will be plated parts immersed in the mixed solution of nickel sulfate, the times monobasic sodium phosphate, sodium acetate and boric acid maceration, in a certain acidity and temperature changes, the nickel ions in the solution was sub-dihydrogen phosphate, sodium reduction atom deposited on the workpiece surface to form a detailed and bright nickel plating. The steel parts can be nickel plated. Parts of tin, copper and copper alloy aluminum contact with its first 1-3 minutes on the surface, in order to accelerate the chemical nickel plating. Electroless plating is the case of no electricity, the use of oxidation-reduction reaction on the catalytic surface of the plated metal alloy. It recently developed a new technology.
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