Passivations (based on trivalent chromium) protect zinc and zinc alloy coatings and improve the corrosion resistance of the coating systems. Different shades of colour (black, yellow, olive) are available for colour coding of the coated parts.
for all zinc-plated parts (alkaline, acidic or cyanidic zinc) in order to improve cathodic corrosion resistance (CRC).
Liquid additive used to remove zinc from passivations, thus increasing the service life of the passivating solution.
Produces a transparent, weakly bluish finish on zinc-nickel alloys. SLOTOPAS ZN T 20 is operated at room temperature.
Produces slightly iridescent conversion layers with excellent corrosion protection. Subsequent sealing gives a uniform transparent surface finish.
Produces bluish-violet conversion layers. Less sensitive towards temperature treatment.
Produces slightly iridescent conversion layers on zinc and zinc-iron. Reduces inside corrosion. Subsequent sealing gives a uniform transparent surface finish.
Thin Layer Passivation for zinc-nickel alloys. Excellent corrosion protection. Free of flouride.
Single-component thinlayer passivation for zinc-nickel alloys.
Black chromating for electro deposited Zn-Ni layers which form deep black, uniform surfaces.
Intensive yellow passivation without any dye.
Black passivation at RT for alkaline zinc- and low alloyed zinc-iron layers.
Cobalt-free passivation witch is used for passivation of electro deposited zinc-nickel alloy layers . It produces a blue, chromium(VI)-free passivation layer with good corrosion behaviour and is suitable for colour coding of articles.
Produces dark conversion layers on zinc-nickel alloys. Gives a uniform black surface finish when followed by a sealant.
Passivation SLOTOPAS Z 30 T forms on every zinc plated surface an intensive bluish, chromium(VI)-free protection layer with extraordinary good corrosion behaviour.
Produces black conversion layers on zinc-iron alloys .Subsequent sealing is recommended.
Corrosion resistance according to DIN EN ISO 9227, > 24 h also after heat treatment (120 °C / 24 h).