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Nickel electroplating is a process of depositing nickel onto a metal part. Parts to be plated must be clean and free of dirt, corrosion, and defects before plating can begin. [3] To clean and protect the part during the plating process, a combination of heat treating, cleaning, masking, pickling, and etching may be used. [1]
The main ingredients of an electroless nickel plating bath are source of nickel cations Ni 2+, usually nickel sulfate and a suitable reducing agent, such as hypophosphite H 2 PO − 2 or borohydride BH − 4. [1] With hypophosphite, the main reaction that produces the nickel plating yields orthophosphite H 2 PO − 3, elemental phosphorus ...
Nickel plating Soon after, John Wright of Birmingham , England discovered that potassium cyanide was a suitable electrolyte for gold and silver electroplating. Wright's associates, George Elkington and Henry Elkington were awarded the first patents for electroplating in 1840.
Plating is a finishing process in which a metal is deposited on a surface. Plating has been done for hundreds of years; it is also critical for modern technology. Plating is used to decorate objects, for corrosion inhibition, to improve solderability, to harden, to improve wearability, to reduce friction, to improve paint adhesion, to alter conductivity, to improve IR reflectivity, for ...
Electroless nickel-boron plating developed as a variant of the similar nickel-phosphorus process, discovered accidentally by Charles Adolphe Wurtz in 1844. [2]In 1969, Harold Edward Bellis from DuPont filed a patent for a general class of electroless plating processes using sodium borohydride, dimethylamine borane, or sodium hypophosphite, in the presence of thallium salts, thus producing a ...
Electroless nickel plating uses nickel salts as the metal cation source and either hypophosphite (H 2 PO 2-) (or a borohydride-like compound) as a reducer. [6] A side reaction forms elemental phosphorus (or boron) which is incorporated in the coating. The classical deposition methods follows the following steps:
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