The process of coating a metal surface with a protective layer of zinc or other metal using electrical current.
From electro- + galvanization (from Galvani). This industrial technique evolved in the 19th century as a refinement of hot-dip galvanizing, using electrical plating instead of chemical immersion.
Electrogalvanized steel bridges and cars resist rust far better than regular steel because the zinc coating actually sacrifices itself first—it rusts instead of the steel underneath, protecting it for decades.
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