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Zinc-Alloy Plating Processes

parts plated in zinc-alloy coatings

Corrosion protection is one of the fundamental tasks in electroplating technology. Zinc- and zinc alloy processes from Schloetter offer a high-quality and cost-effective protection for functional components which are intrinsically linked with our post-treatments.

Summary of Zinc Alloy Electrolytes

Bath No. Process Name Type of Electrolyte Description
08508 Zinc-Nickel
SLOTOLOY ZN 80
Zinc-Nickel
alkaline
a long-life process for rack plating; provides highest corrosion protection
08221 Zinc-Nickel
SLOTOLOY ZN 210
Zinc-Nickel
alkaline
barrel process, which allows steel types with a difficult starting behaviour a deposition on one-step basis
08312 Zinc-Nickel
SLOTOLOY ZN 320
Zinc-Nickel
acidic
good tolerance to high temperature and therefore especially suitable for barrel plating

Alkaline Zinc-Nickel Alloy Electrolytes

08508 Zinc-Nickel Alloy SLOTOLOY ZN 80

Like all other zinc-nickel electrolytes this is a high-end process to fulfil the highest standards of corrosion protection. Zinc-Nickel SLOTOLOY ZN 80 is an alkaline process for the deposition of zinc-nickel coatings with 12 - 15 % nickel in the alloy.

Zinc-Nickel SLOTOLOY ZN 80 is operated with insoluble nickel anodes. It provides good metal distribution and constant alloy composition over a wide current density range. With adequate maintenance the service life of the electrolyte is almost unlimited. Electrolytes that were made-up directly after the development of this process are still in use today.

08221 Zinc-Nickel Alloy SLOTOLOY ZN 210

Zinc-Nickel SLOTOLOY ZN 210 is an alkaline, single-stage process for the deposition of zinc-nickel alloy coatings containing 12 - 15 % w/w nickel. It is only used for barrel plating. The difference to the two-stage barrel process, SLOTOLOY ZN 60, is a new additive system which allows steel types with a difficult starting behaviour, a deposition on single-stage basis at barrel plating. Zinc-Nickel SLOTOLOY ZN 210 deposits semi-bright to bright alloy coatings with an excellent metal and alloy distribution. Furthermore, our tests showed a very good throwing power.

08312 Zinc-Nickel SLOTOLOY ZN 320

Zinc-Nickel SLOTOLOY ZN 320 is a weak acidic, ammonium- and boric acid-free electrolyte. It’s used for the deposition of silky matt or bright zinc-nickel alloy coatings with a nickel content of 12 - 15 % by weight.

Excellent corrosion protection is achieved, as would be expected from a high nickel containing zinc-nickel alloy. Zinc-Nickel SLOTOLOY ZN 320 is suitable for both rack and barrel application.

The metal content of the electrolyte is maintained in the correct ratio by the application of separate zinc- and nickel anodes. The electric circuit is separated on the anode side that means separate rectifiers are used for the particular anode type. The electrolyte is characterized by a constant alloy composition over a wide current density range.

more zinc-alloy plated parts

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Schloetter Co Ltd

Abbey Works
New Road
Pershore
Worcs, UK
WR10 1BY

Tel:      +44(0)1386 552331

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E-mail:  info@schloetter.co.uk

Registered in England 947371

VAT No. GB 274 7177 31

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