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Nickel & Zinc Cyanide
Description
- Substitute non-cyanide Nickel and/or Zinc baths in place of those containing cyanide
- Discontinue use of cyanide
Advantages / Limitations
Acidic bath (contains cyanide)
- Plates faster, at twice the efficiency of the alkaline bath
- Produce 10-15% nickel alloys
- Plate distribution varies across current density range
- Nickel content in the deposit may be higher in low-current density areas
- Avoiding cyanide eliminates the need for cyanide destruction reducing disposal costs
Alkaline bath (non-cyanide)
- 20-40% efficient
- Produces uniform thickness and nickel distribution in the deposit across low- and high- current density areas
- Deposit has good ductility and has been successfully used on parts requiring post plate forming
- Alkalinity of the bath reduces corrosion tendency of un-plated surfaces such as internal areas of tubular parts
- Non cyanide baths require more maintenance and are less forgiving
Resources
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