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Fact Sheet 2011–3016

Zinc—The Key to Preventing Corrosion

By S.J. Kropschot and Jeff L. Doebrich

Abstract

Cover and link to report PDF (5.12 MB)

Centuries before it was identified as an element, zinc was used to make brass (an alloy of zinc and copper) and for medicinal purposes. Metallic zinc and zinc oxide were produced in India sometime between the 11th and 14th centuries and in China in the 17th century, although the discovery of pure metallic zinc is credited to the German chemist Andreas Marggraf, who isolated the element in 1746.

Refined zinc metal is bluish-white when freshly cast; it is hard and brittle at most temperatures and has relatively low melting and boiling points. Zinc alloys readily with other metals and is chemically active. On exposure to air, it develops a thin gray oxide film (patina), which inhibits deeper oxidation (corrosion) of the metal. The metal’s resistance to corrosion is an important characteristic in its use.

First posted March 2011

For additional information contact:
Mineral Resources Program Coordinator
U.S. Geological Survey
913 National Center
Reston, VA 20192
Telephone: 703–648–6100
Fax: 703–648–6057

Internet: http://minerals.usgs.gov/

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Suggested citation:

Kropschot, S.J., and Doebrich, J.L., 2011, Zinc—The key to preventing corrosion: U.S. Geological Survey Fact Sheet 2011-3016, 2 p., available at http://pubs.usgs.gov/fs/2011/3016/.



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