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Electroless nickel (NiP) is a process to chemically deposit a nickel phosphorous alloy on the surface of aluminium and aluminium alloys, stainless steel, carbon steel alloys, copper and copper alloys and some non-conductive materials.
Depending on the concentration of phosphorous in the bath, the electroless nickel can be classified as follows:
Apart from these regular treatments, we count on the nickel Teflon treatment (NiPTFE), a coating incorporating Teflon particles (8-9 %w) into the high phosphorus concentration (9-11 %w), which confers the coating an exceptionally low friction coefficient (between 0.05 and 0.1) and excellent wear resistance. This characteristic makes it the most suitable process for the mould industry and for any part subject to sustained friction. 
All these processes enjoy a common characteristic that makes electroless nickel plating very adequate for any sector, and that is the uniform coating on all part surfaces no matter its shape (no dispersion). This saves possible after treatment grinding; and avoids problems when very close tolerances are involved (error margin ±2 microns).
Deposit characteristics vary as a function of the phosphorous percentage, but as a general rule all treatments improve substrate hardness, as well as corrosion resistance.
All these processes can be performed both at rest and in barrel, as a function of size and shape.. |
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