Electro Synthesised Ceramic Coating
Electro Synthesised Ceramic Coating on Aluminium for Corrosion Resistance
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Anodizing of aluminium is widely used in almost all field right from kitchenware to spacecraft components. Anodizing of aluminium is used for fabricating nano porous alumina membranes suitable for a number of diverse applications, including filtration, duplication matrixes and evaporations etc. The formation of oxide film on aluminium is carried out in sulphuric acid, oxalic acid, phosphoric acid and chromic acid. Of all these systems, phosphoric acid is used to improve adhesive bond on aluminium and chromic acid is preferred where corrosion resistance is the main requirement. Similarly the ox...
Anodizing of aluminium is widely used in almost all field right from kitchenware to spacecraft components. Anodizing of aluminium is used for fabricating nano porous alumina membranes suitable for a number of diverse applications, including filtration, duplication matrixes and evaporations etc. The formation of oxide film on aluminium is carried out in sulphuric acid, oxalic acid, phosphoric acid and chromic acid. Of all these systems, phosphoric acid is used to improve adhesive bond on aluminium and chromic acid is preferred where corrosion resistance is the main requirement. Similarly the oxide surface obtained using sulphuric acid electrolyte contain number of pores.An attempt was made to produce thick alumina coatings with excellent corrosion resistance at room temperature by carrying anodization of aluminium in potassium titanium oxalate electrolyte which was investigated very less in past literature. Anodization carried out in potassium titanium oxalate alone will yield porous coating.
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