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