High performance blue passivate
for zinc nickel surfaces
Up to 1,000 hours against white corrosion
Extraordinary lifetime due to a high pH
(4.0 – 4.5)
Fluoride-free and optionally cobalt-free, two-component deep blue passivate for alkaline zinc nickel and acid zinc nickel
- For alkaline and acid zinc nickel surfaces
- Outstanding corrosion protection
- Up to 1,000 hours against white corrosion without sealer
- Extraordinary lifetime
- Homogeneous blue appearance
- Clean stainless steel look on acid zinc nickel with sealer
- Cobalt-free version is also available
- For demanding applications
- Suitable for automotive applications such as brake calipers
- Rack and barrel plating
High performance blue passivate for zinc nickel surfaces
Tridur® DB is Atotech’s newest member of the Tridur® family. It is a fluoride-free, two-component deep blue passivate for alkaline and acid zinc nickel surfaces. Suitable for rack and barrel applications, Tridur® DB produces an even, attractive deep blue finish even on complex-shaped parts.
It has a wide working window and an outstanding corrosion performance, which makes it a perfect alternative to standard thickfilm passivates.
Tridur® DB offers up to 1,000 hours against white corrosion without even applying a sealer. When used with a sealer it provides even higher corrosion resistance results along with a stainless steel appearance on acidic zinc nickel electroplated surfaces.
Another remarkable benefit of Tridur® DB is its extraordinary lifetime. Due to a high pH (4.0 – 4.5), the metal dissolution rate is reduced considerably during passivation. A cobalt-free version of Tridur® DB providing the same features in terms of corrosion protection and deep blue appearance is also an available option.
What inspires us
Why we developed Tridur® DB
Surfaces for functional parts have to provide reliable corrosion protection. But in addition to its functional properties, the finish should look good, too.
However, functional metal parts are often complex shapes, which makes it more difficult to achieve an even finish. Additionally, fueled by increased environmental regulations, demand for sustainable surface solutions continues to grow.
Our passivate Tridur® DB has an outstanding high corrosion resistance – up to 1,000 hours against white corrosion without using a sealer are possible.
It produces an even, attractive deep blue finish, even on complex-shaped parts. When used with a sealer on acidic zinc nickel surfaces, it provides a clear stainless steel appearance. It is fluoride-free and a cobalt-free option is also available.