ELECTROLESS NICKEL PLATING PROCESSES

The process of electroless nickel plating consists in the depositing of nickel without the use of electricity: the presence of a chemical reducing agent in the treatment solution (normally sodium hypophosphite) triggers a controlled autocatalytic reaction with a co-deposition of phosphorus (resulting from the hypophosphite reaction).

PROCESSI DI NICHELATURA CHIMICA

Il processo di nichelatura chimica (o electroless nickel plating) consiste in una deposizione di nichel senza l’uso di corrente elettrica: la presenza nella soluzione di trattamento di un riducente chimico (normalmente ipofosfito di sodio) innesca una reazione autocatalitica controllata, con una codeposizione di fosforo (derivante dalla reazione dell’ipofosfito).

UNIFORM THICKNESS

RESISTANCE TO CORROSION

RESISTANCE TO WEAR AND TEAR

ADDITIONAL PROPERTIES

Electroless nickel can be deposited on a wide range of materials: aluminum alloys, copper and its alloys (including copper-tungsten), ferrous alloys (stainless steel, kovar, invar, mumetal, etc.) and titanium (Ti6Al4V alloy) with thicknesses ranging from 2-3μ up to 50μ (and more) according to the needs. In comparison with electrolytic nickel-plating (using electricity), one of the strengths of electroless nickel-plating is that it allows uniform thickness distribution on treated objects, especially on complex geometric shapes; indeed, it is possible to nickel-plate the internal part of pipes without the aid of auxiliary anodes (it is sufficient to ensure good piece motion).

TREATED MATERIALS

  • Aluminum and its alloys (among the most treated: 6082 – 6061 – 2024 – 4047 – 7075)
  • Ferrous alloys, including high strength steels (36CrNiMo16 e 300M)
  • Stainless steels (AISI 303, 304, 316, 430, 440, 15-5PH, 17-4PH)
  • Iron-nickel alloys (Mumetal, Invar, Inconel, Kovar)
  • Copper and its alloys (brass, bronze, nickel silver, copper-beryllium)
  • Tungsten-copper alloys (W / Cu 70/30%, W / Cu 80/20%)
  • Titanium (Ti6Al14V alloy)
  • Magnesium alloys (alloy type AZ91)
  • Molybdenum
  • Tungsten (especially black chrome)
  • Carbon fiber composite material
  • Al-Si-C (aluminum metal matrix composite with silicon carbide particles)

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