Zinc Passivation
Zinc passivation is a chemical treatment applied to zinc-coated metals to enhance corrosion resistance by forming a protective, inert layer on the surface. Zinc passivation, also known as chromate or conversion coating, is a process that creates a thin, protective layer on zinc or zinc-alloy surfaces. This layer chemically reacts with the zinc to form a zinc-chromium complex, which acts as a barrier against moisture, oxygen, and salts, preventing the formation of white rust (zinc hydroxide) and extending the li...
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Passivation Color include
1. Clear (Blue ) Passivation ， Bright mettalic, moderate corrosion protection
2. Thick Film Passivation , Higher corrosion resistance,coloured iridescent
3. Black Trivalent Passivation, High visual appeal with good protection, popular in automotive, hardware
4. Yellow Trivalent Passivation, Traditional Hevalent yellow without ttoxicity
