Galvanic nickel plating involves depositing a layer of nickel onto an item by suspending it and a nickel anode in a galvanic solution and passing an electric current between them. Electroplating is a common method used to coat goods with different metals, including nickel, which offers wear resistance, low friction, corrosion resistance, and decorative finishes. The process involves suspending the receiving articles and a nickel anode in a bath of electroplating solution and passing an electric current between them, causing nickel particles to bond atomically with the receiving surface. The thickness of the coating can be controlled by manipulating the process time, cathodic efficiency coefficient, and electric current.
Galvanic nickel plating is the process of coating an item with a layer of nickel by deposition of electrical material. The process involves suspending the element and a nickel anode in a bath of galvanic solution and passing an electric current between the two. This causes a transfer of nickel metal particles between the bath and the receiving object. These particles bind to the receiving object at the atomic level, thereby coating it with a layer of nickel. The contents of the spent nickel bath are replaced by particles from the anode which are poured into the solution during the electroplating process.
Electroplating is a very common material deposition method used to coat millions of tons of goods with a multitude of different metals each year. Nickel is one of the most popular plating metals with several attractive and beneficial characteristics. These include increased wear resistance in softer metal parts, exceptionally low coefficients of friction and outstanding corrosion resistance. Electroplating nickel is also a popular decorative process that gives plated items a deep, lustrous sheen. These decorative trims include black nickel finishes and are available in a variety of sheen grades ranging from semi-gloss to satin.
The nickel electroplating process is similar to most electrical material deposition methods. The receiving articles are suspended together with a nickel anode in a bath of nickel electroplating solution. These are typically nickel/sulfate-chloride, nickel/fluoborate or nickel/sulfamate blends for regular coatings and nickel sulfate/ammonium chloride/boric acid blends used for hard coatings. An electric current is then passed between the nickel anode and the receiving articles. In this process, the receiving parts act as the cathode or negative point, the anode the positive point, and the bath solution the conductive path in the circuit.
Current flow from the anode to the plating elements causes nickel particles in the bath solution to be attracted to the surface of the plating elements. These particles bond atomically with the receiving surface, thus effectively “growing” a layer of nickel on them. When this occurs, nickel particles are released from the anode into the solution, thus replacing those deposited on the plated items. Bath solutions are typically heated between 100°-160° Fahrenheit (about 38°-71° Celsius) depending on the solution used; each type of solution produces different characteristics of tensile strength and hardness. The thickness of the electroplating nickel coatings can be carefully controlled by manipulating the process time, the cathodic efficiency coefficient and the electric current.
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