Which oxide film is more protective ?
(a) porous
(6) non-porous
(d) none of the abo
(c) volatile
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Natural oxides.
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non-porous
The result is a non-porous oxide layer that is very securely adhered. Due to the lack of pores in the oxide coating, it acts as a barrier to further activity, slowing down the pace of metal oxidation.
Metals such as Aluminum forms its oxide which has a volume larger than that of the metal (Al). The result is a non-porous oxide layer that is exceptionally securely adhered. Due to the lack of porosity in the oxide coating, it acts as a barrier to further activity, slowing down the pace of metal oxidation.
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