Increasing the thickness of the natural oxide layer on the surface of metals is known as - Science - Materials Metals and Non-Metals

Question

Increasing the thickness of the natural oxide layer on the surface
of metals is known as

Riya Gupta · Accepted Answer

Dear student, Increasing the thickness of the natural oxide layer
on the surface of metals is known as Anodising Anodising refers to
the process of depositing a thick layer of oxide of metal on its
surface by making that metal as anode of a cell, such that oxygen
which is released during electrolysis of some suitable electrolyte
reacts with the metal and forms metal oxide This layer of metal
oxide makes the metal resistant to further corrosion For example,
during anodising of aluminium metal, a clean aluminium article is
made the anode and is electrolysed with dilute sulphuric acid The
oxygen gas evolved at the anodereacts with aluminium to make a
thicker protective oxide layer, making it passive to further
corrosion Thanks and regards