It has great corrosion resistance. It is a plating film in which about 15% nickel is alloyed with zinc plating.
So called "Green chromate" using hexavalent chromium has excellent corrosion resistance, so Zinc-nickel alloy plating did not receive much attention until the RoHS and ELV Directives came into effect.
Basic characteristics
| Wear resistance | Heat resistance | Corrosion resistance | Chemical resistance | Non-adhesive | Lubricity | Adhesion | Electrical conductivity | Dimensional accuracy |
| △ | 〇 | ◎ | △ | × | × | ◎ | △ | △ |
Features
Features 1Feature 1 Excellent corrosion resistance
Zinc plating is called a self-sacrificing film. As zinc is more easily corroded than iron, the zinc plating film corrodes first to prevent the iron underneath from corroding.
Zinc-nickel alloy plating is not only self-sacrificing, it also does not easily corrode as it contains nickel.
Enhanced corrosion resistance with post treatment
Chromate treatment can make zinc-nickel plating even more corrosion resistant.
Over 1,000 hours of in-house salt spray tests showed no occurrence of red rust.
In addition to the usual blue exterior color, black is now being made available.
Plating equipment
| Processing type | Maximum size | Maximum weight |
|---|---|---|
| Automatic rack | 900 × 200 × 600H | 10kg |
Proceccable materials
Iron materials, stainless steel materials
Application
Frames, bases, brackets, stays, springs,
For prevention of corrosion and painting substrates for mechanical structural parts such as cases, yokes and metal fittings.
Materials used under environments where corrosion resistance more than zinc plating is required.