the galvanised article is protected against rusting even if the coating is broken . can u reason out why ?
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coating of zinc on any metal from prevent from rusting because which metal have coated its also have power resist the rusting
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Hey friend,
Here's your answer,
If the zinc coating is broken, the galvanized object remains protected because zinc is more reactive than iron and hence can be easily oxidized.
Moreover, zinc is more reactive than iron, and loses electrons easily. The outer layer of zinc of any galvanized material, reacts with the atmospheric oxygen to form Zinc Oxide (ZnO), which is stronger than Zinc.
Therefore, when zinc layer gets broken down, the zinc keeps on reacting and thus gets oxidized. Thus, iron object is protected.
Hope this helps!!!!
Here's your answer,
If the zinc coating is broken, the galvanized object remains protected because zinc is more reactive than iron and hence can be easily oxidized.
Moreover, zinc is more reactive than iron, and loses electrons easily. The outer layer of zinc of any galvanized material, reacts with the atmospheric oxygen to form Zinc Oxide (ZnO), which is stronger than Zinc.
Therefore, when zinc layer gets broken down, the zinc keeps on reacting and thus gets oxidized. Thus, iron object is protected.
Hope this helps!!!!
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