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Why galvanized iron articles do not …

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Why galvanized iron articles do not rust even uf the zinc layer gets broken?

Posted by Broken Buddy 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Diksha? 5 years, 11 months ago

Zinc is more reactive than iron, and loses electrons more easily. The outer layer of zinc of any galvanized material, reacts with the atmospheric oxygen to form Zinc Oxide (ZnO), which is stronger than Zinc. Thus, even if the outer layer of zinc undergoes corrosion, the material is getting coated with a stronger substance (ZnO), and thus is better able to resist corrosion.

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