what is galvanization
Answers
Answer:
Galvanization is a process in which coat of zinc is applied to the thicker base metal surface which are prone to corrosion such as iron. The process involves hot dip galvanization or electrogalvani zation
Hot dip galvanization process needs dipping of the metal which is to be made corrosion free,in a premolted zinc. To this solution chromate may also be added. This method does not ensure uniform coating
Electogalvanization involves transfer of zinc ions to the metal surface through electrons current. It ensures uniform coating.
Zinc protects the metal by forming a barrier between the metal and electrolyte such as salty water or environmental conditions.
Zinc also acts as a sacrificial anode. This anode undergoes chemical reaction faster in presence of cathode metal such as iron than it would when present alone. while on the others hand, iron which acts as a cathode would undergo slower corrosion in presence of zinc.
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Answer:
Galvanization or galvanizing is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which the parts are submerged in a bath of molten zinc.