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sherardizing
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Large zinc-coated galvanized metal ventilation ducts with a vent and joints are mounted near a ceiling inside an industrial or commercial building.
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Sherardizing
Sherardizing Zinc-coated ventilation ductwork.

sherardizing

metallurgy
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History

sherardizing, means of forming a uniform, corrosion-resistant coating of zinc on the surface of iron or steel objects. The process, practiced since about 1900, is named for its English inventor Sherard O. Cowper-Coles. The object is heated in a sealed container with finely divided zinc to a temperature below the point at which zinc melts. The two metals amalgamate, forming alloys of zinc and iron and an external layer of pure zinc in an adherent coating that resists corrosion and also makes an excellent base for paint. Compare galvanizing.

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Divya Dubey.