Barrier Protection: The spray coating itself provides a strong barrier between the environment and the steel surface, keeping out water that eventually leads to oxidation.
Cathodic Protection: Metallizing is also effective because it relies on an electrochemical reaction between steel and zinc to drive these zinc-based coatings to “sacrifice” themselves to protect the steel at the site of any damage. This sacrificial protection is akin to the protection provided by zinc-rich primers or galvanizing.
Tomorrow: What is the difference between metallizing and hot-dip galvanizing?
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