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What materials can be used for hot-dipped, zinc-coated galvanized steel?

1) Stainless steel
2) Silicon bronze
3) Copper

User MobileGuy
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1 Answer

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Final answer:

Stainless steel, silicon bronze, and copper are not typical materials for hot-dipped, zinc-coated galvanized steel, which is used to protect iron or steel from corrosion. The zinc coating provides prophylactic and cathodic protection, preventing rust and sacrificing itself before the underlying metal oxidizes.

Step-by-step explanation:

Materials such as stainless steel, silicon bronze, and copper are not typically used for hot-dipped, zinc-coated galvanized steel. Instead, galvanization involves protecting iron or steel by coating it with a layer of zinc through a process called hot-dipping. The zinc coating serves to provide both prophylactic protection and cathodic protection. Prophylactic protection is a barrier that shields the steel from oxygen in the air, preventing rust, while cathodic protection means that zinc, being more reactive, will oxidize before the underlying steel. Zinc's crystalline surface after hot-dipping has this dual protective role.

Galvanized steel is widely used because of its resistance to corrosion. The crystalline surface of galvanized steel and the creation of a protective layer of basic carbonate, Zn₂(OH)₂CO3, inhibits further oxidation and corrosion. Galvanized steel is commonly found in objects like nails and garbage cans, where durability against the elements is essential.

User John Montgomery
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