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 ... Found on http://www.britannica.com/eb/a-z/s/80
Sherardizing is a method of treating iron and steel in order to obtain a rust-proof surface. Sherardizing consists of heating the iron or steel in the presence of zinc dust in such a way that an amalgamation of the two metals takes place, an iron-zinc alloy being formed. Found on http://www.probertencyclopaedia.com/browse/GS.HTM