Iridite is a N.C.P. (non-chrome chemical process) that adds a protective chromate conversion film coating on aluminium and its alloys.
Iridite is often used for high or low frequency electrical applications, as Iridite coating has a minimal effect on aluminium’s electrical characteristics when used at lower concentrations. In addition, it is often used as a protective coating for abraded anodized surfaces and to provide an electrical contact.
Iridite coating can be applied using dip, brush, swab, or spray methods and creates coatings in shades ranging from clear to dark yellow. The darker shade of coating, the greater the corrosion protection. Yellow Iridite coating can be left as the final finish or can be dyed other colours.
Once coated with Iridite there are a number of further finishing options:
- Iridite coating can act as a base key for paint application and high performance top coats and lacquers
- Iridite provides an excellent base for rubber bonding
- Once Iridite coated, the aluminium surface can be welded either by shielded arc method or by spot welding.
The Iridite process is both RoHS and WEEE compliant.