Chromating (based on hexavalent chromium), passivation (based on trivalent chromium) and sealants (organic, inorganic and hybrid) protect zinc and zinc alloy coatings and thus optimise the corrosion resistance of the coating systems. In addition, lubricants can be used to define the coefficient of friction of the surface.
cathodic corrosion protection (CRC)
Liquid additive used to remove zinc from passivations, thus increasing the service life of the passivating solution.
Improves adhesion and corrosion resistance of yellow chromated layers.
Black chromating two-step process for zinc-iron alloys. Liquid product.
Post-Dip Solution for black chromated zinc and zinc-iron coatings. Fixes the chromate layer and improves its appearance.
Post-dip sol. for black chromated Zn- and Zn-Fe layers, fixes the chromated layer and improves the appearance.
Black chromating process for zinc and zinc-iron coatings. Liquid product.
Black chromating process for zinc coatings from acid and alkaline electrolytes. May also be applied as olive chromating. Solid product.
Organic sealant for chromated or passivated zinc and zinc alloy layers. Produces a uniform appearance and improves the corrosion protection.
Clear, transparent hybrid sealant which contains organic- as well as inorganic components. This film doesn’t only increase the corrosion protection but also reduces the sensitivity towards finger prints and improves the appearance.
Inorganic sealant for chromated respectively passivated zinc- and zinc alloy layers. It produces an uniform appearance and improves the corrosion protection.
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.
Post-Treatment for zinc-nickel coatings, for transparent appearance and less sensitve to fingerprints. Replaces the sealing at black passivated parts.
Black chromating for electro deposited Zn-Ni layers which form deep black, uniform surfaces.
Sealant for chromated or passivated zinc and zinc alloys containing nano sized silicon compounds. It gives a clear, transparent surface film after drying and increases corrosion protection and optical appearance.
Sealer produces a nearly closed coating on parts with complicated geometry.
Sealant with very good corrosion protection on the basis of polysilicate.
Post-dip solution which forms a transparent protection film. It doesn't only increase the corrosion protection but also reduces the sensitivity towards finger prints and improves the appearance.
Sealant with very good corrosion protection on the basis of polysilicate with an integrated lubricant.
Sealant SLOTOFIN GM 1610 is a sealer which is applied by immersion or in centrifuges on passivated or chromated zinc alloy coatings. It serves primarily to produce a defined coefficient of friction on screw heads
Sealant SLOTOFIN GM 1260 is a sealer which is applied by immersion or in centrifuges on passivated or chromated zinc and zinc alloy coatings. It serves primarily to produce a defined coefficient of friction on screw heads
The Post-Dip Solution SLOTOPAS NT 1300 is used for posttreatment on already passivated zinc-nickel alloy coatings. The Post-Dip Solution SLOTOPAS NT 1300 is applied as an alternative to a sealant.It can be used for both rack and barrel plating.
Intensive yellow passivation without any dye.
Black passivation at RT for alkaline zinc- and low alloyed zinc-iron layers.
Passivation SLOTOPAS PF 1750 is applied for the posttreatment of Zn-Fe coatings with an iron content of 0.7-1.2% iron. It produves a uniform black conversion layer featuring good corrosion protection in combination with a sealant.
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.
METAPAS F yellow CA is intended to yellow chromating of electro deposited zinc coatings. Barrel- and rack parts can both be chromated very well.
METAPAS F black CA is intended to black chromating of electro deposited zinc coatings and forms deep black and uniform surfaces. In dry condition these are resistant to abrasion and bending.
METAPAS 131 CA forms a dark olive chromate film on zinc- cadmium- as well as on cadmium alloycoatings, which are mainly deposited from alkaline electrolytes.
METAPAS olive CA forms dark-, olive freen chromate films and can be used forrack- as well as for barrel parts.
METAPAS C black CA forms deep black chromate films, regardless if the zinc layers have been deposited from acidic, alkaline cyanide-free or cyanidic electrolytes.
Passivation SLOTOPAS PF 1890 contains Cr(III) compounds and fluorides, and no Cr(VI) compounds. SLOTOPAS 1890 prudces black, weakly iridescent layers on zinc-nickel alloys. Passivation SLOTOPAS PF 1890 is used in combination with a subsequent post-dip solution, sealant or topcoat.
Blue thin layer passivation for zinc-nickel alloy layers. Universally applicable for all zinc-nickel alloy layers of Schlötter.
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).