Black or Blue Trivalent Chrome Passivation Process After Zinc or Zinc-nickel Alloy Plating

​Introduction
Trivalent chromium passivation process gives extremely good corrosion resistance to the zinc or zinc-nickel plated substrates, without any hexavalent chromium, can meet the environment protection standard. Black, blue, iridescent or white color can be obtain using I.M.T’s trivalent passivation, I.M.T.

Details

Introduction

Trivalent chromium passivation process gives extremely good corrosion resistance to the zinc or zinc-nickel plated substrates, without any hexavalent chromium, can meet the environment protection standard. Black, blue, iridescent or white color can be obtain using I.M.T’s trivalent passivation, I.M.T. trivalent blue passivation process pass the test of 72-hour neutral salt spraying(NSS test), and iridescent passivation process can pass 100-hour NSS test.

 

Application

Trivalent chromium passivation is widely used in industries like engineering, shipbuilding, car manufacturing, furniture, electric, etc.. It is applicable to rack or barrel plating.

 

Application examples

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Representative Process

HN-67 Trivalent Black Zn Passivation Process

HN-68 Trivalent Blue Zn Passivation Process

HN-69 Trivalent Colored Zn Passivation Process

HN-861 Zn-Ni Alloy Trivalent Chromium Black Passivation Process

HN-862 Zn-Ni Alloy Trivalent Chromium Blue Passivation Process

HN-863 Zn-Ni Alloy Trivalent Chromium Colored Passivation Process

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