2. Galvanization reaction
Galvanization coating is not simply a deposit of zinc on the surface of steel, as paint might be. Since steel is dipped in liquid zinc, it is a metallurgical reaction of double diffusion between zinc and iron. This diffusion leads to the formation of layers of intermetallic compound alloys.
The galvanization coating is therefore composed of:
one or more layers of intermetallic compounds, depending on the nature of the bath (presence of aluminum in particular) and the technological process;
a final layer of external zinc, zinc drawn to the part's surface by capillary action.
2.1 Formation of interfacial alloys
When a steel component is immersed...
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Galvanization reaction
Main steps in a galvanizing operation
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Bibliography
Bibliography
- (1) - - http://www.egga.com
- (2) - COUTSOURADIS (D.) - Developments in zinc and zinc alloy coated sheet - . Intergalva n° 91, Barcelone, EGGA....
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