what is anodising.why Aluminium is called a self protecting metal.
Answers
advertising is a process of coating the surface of aluminium by a thick oxide layer by electrolysis.
Aluminium is also called as self protecting metal because it forms a hard and thin layer of Aluminium oxide on its surface by oxidization which prevents oxygen from coming in contact with aluminium thereby protecting the metal
Anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish.
Thus, the aluminium protects itself from any corrosion by the formation of a layer of aluminium oxide over the entire metal surface and thus, aluminium is termed as a self-protecting metal. ✔Aluminium is called a self - protecting metal as aluminium reacts with oxygen and and forms aluminium oxide.
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