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Description: GANZ - We represent the core of New Zealand’s galvanizing specialists
zinc (278) hot-dip galvanizing (26) galvanizing (24) steel protection (1)
In 1742 Paul Jacques Malouin gave a presentation to the Académie Royale des Sciences in which he described a method of protecting iron from corrosion, by way of dipping it into molten zinc.
Over the next 60 years, Luigi Galvani and Alessandro Volta’s studies of electricity suggested that something mysterious was happening when dissimilar metals were immersed in an electrolyte.
By 1824, Sir Humphry Davy had shown the British Navy that zinc anodes would prevent the corrosion of copper (and later steel) ship hulls. He showed both in laboratory and field tests that the zinc was consumed sacrificially, in favour of the more noble metals. This is the process of cathodic protection.
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