plating, anodizing, & finishing Q&As since 1989
Can Iridite Be Colored White?
October 1, 2008
Is Iridite with a color of WHITE possible?... I have seen clear and gold and also a blueish color with the RoHS compliant Trivalent Iridite but never white... If a white Iridite finish is possible, would the surface be electrically conductive?Bob Diamond
Mechanical Engineer - Hauppauge, New York
October 4, 2008
The color is a function of the chemistry that results in the protective conversion coating. The hexavalent clear is generally a thinner version of the "yellow" or has been leached (even when it is a formulation specifically for clear, chemically it is a variation of the formulation for the yellow and is a thinner coating). The trivalent products are exhibiting a color which happens to be that which is a result of the chemistry. Many wish for the old yellow color of hex finishes.
If a white was on the market, I would presume it was the result of the chemistry to make a product that met the applicable corrosion protection and/or conductivity spec. not that it would have certain properties because it was white.
process supplier - Great Neck, New York