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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: vermutung2 on November 11, 2020, 06:58:21 AM

Title: Problem on anodizing stainless steel
Post by: vermutung2 on November 11, 2020, 06:58:21 AM
Hi all, new forum user here.

I would like to color some stainless steel by anodization for my school project.

After reading through some research articles, I found that they use a common electrolyte which consist of the combination of H2SO4 and CrO3 in a concentration ratio of around 2:1

The problem is that I cannot buy Chromium trioxide due to the restriction in my country.

What is the use of CrO3 in anodizing stainless steel? Could anyone provide some suggestions for my situation that I can anodize stainless steel without direct access of CrO3? Coloring through heating would be my last option

Thank you