Trivalent Passivates

Thick layer Passivate is a process for zinc
plating and is free of chrome (V1) once applied it produces a slightly blue-yellow iridescent finish on zinc deposits. The corrosion resistance is excellent and is equivalent to the protecting qualities of chrome (V1) colour passivate. Temperatures up to 150c does not affect the corrosion protection quality which is a complete
contrast to chrome (V1) colour passivate, as a matter of fact temperatures 100c and above even improve the corrosion protection.

The development of the thick layer passivate is for new EU regulations regarding the
Automotive and Electrical / Electronic
Industries., these regulations came into force in 2007. This Passivate is also known as Full Passivate or Full Pass.

The trivalent colour passivate is a chrome (V1) free passivate for zinc plating, the process produces a yellow-green–violet finish,
The corrosion resistance is excellent and is
equivalent to the chrome (V1) colour passivate. Temperatures of 80 – 90c do not affect the corrosion protection quality, which is in complete contrast to chrome (V1) colour.

The development of the thin layer passivate is
for new EU regulations regarding the
Automotive and Electrical / Electronic
Industries.

All trivalent passivates are CrIII ELV/RoHS Compliant.

Thin layer passivate is a process for zinc plating and is free of chrome (V1), once applied it produces an intense blue-violet uniform finish on zinc deposits.
Corrosion resistance is still excellent after
temperatures of 120c and the finish does not
degrade, however temperatures of 200c – 210c find the colour does not degrade significantly, but the corrosion resistance decreases, temperatures of 150c for two to three hours does not affect the corrosion resistance.

The development of the thin layer passivate is
for new EU regulations regarding the
Automotive and Electrical / Electronic
Industries.