finishing-and-treatment-manufacturing-processes > Sulphuric Acid Anodising
This process encompasses the use of a Sulphuric Acid Solution to convert the surface of suitable materials to a stable form of oxide.
Components are submerged, then a voltage is applied across the component and the solution which causes the formation of an oxide layer.
When anodising aluminium in this way, the oxide layer thickness can be controlled effectively to create an oxide film thicknesses of 5-25 Microns. Titanium on the other hand will only produce film thicknesses in the region 0.1-0.3 Microns.
Sulphuric Acid Anodising is by far the most commonly available form of Anodising in the UK, it is readily coloured or dyed to provide a decorative finish on aluminium components.
Colouring of titanium is possible, but this is through control of the oxide layer thickness, not through dyeing or colouring using a solution, as with aluminium.