Galvanizing
Galvanizing is the process by which metal, primarily iron and steel, is covered by a protective layer of zinc. This layer of protection is added to guard against exposure to the elements and the air that would cause the metals to rust and deteriorate. If applied properly, galvanizing is able to protect against corrosion for 15 to 30 years or more.
George Bedson* invented the continuous galvanizing process by which sheets of metal or wire are passed along continuously through a molten zinc bath.
Another way to galvanize is by vapor galvanizing. This process involves coating the iron piece with a zinc dust which is then baked onto the surface. An alloy is formed and the iron is then known as sherardized iron.
Metallizing is yet another method of galvanizing, by which semi-molten zinc is sprayed on the surface of prepared metal with a spray gun.
ONELINER: Galvanizing prevents metal rusting.
OTHER CONNECTIONS: None
BIBLIOGRAPHY:
Encyclopedia Britannica
http://www.industrialgalvanizadorasa.com/ing/que_galvanizacion.htm
http://education.yahoo.com/reference/encyclopedia/entry?id=18307