Why Zinc Does Not Corrode As Fast As Iron

Posted in: Engineering

Actually Zinc (Zn) corrodes faster than iron because it is more reactive. But due to the corrosion of zinc, the reaction of zinc with water and oxygen forming substances (Zn(OH)?) that are very tight and stable. This layer ultimately acts as a coating that protects the zinc underneath because water and oxygen cannot penetrate the layer.

zinc is exposed to water and oxygen
zinc is exposed to water and oxygen
Thin layer formed

This article categorized in: Engineering