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Iridite Process

We are to develop an Aluminum heat sink with Yellow / Clear Iridite coating. Please can you give me some detailed stats of this Iridite process so that I can develop it here. The parts are small - 4" X 4". Please let me have some details on this process.

Thanks,

Ravindra C Dani
- Bangalore, India

"Iridite" is a Macdermid brand name, so you certainly cannot formulate it yourself. But you are probably really referring to generic chromate conversion coating. You will find SOME details if you do a literature search back in the early 1950's when the process was developed; these days it's proprietary knowledge.

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey

There is also a pretty good article on Chromate Conversion Coating in the Metal Finishing Guidebook at ~~www.metalfinishing.com~~. That would be a smart place to start, then finish by talking to a vendor of the materials.

Good luck!

Lee Gearhart
metallurgist - E. Aurora, New York

Ed. note: The Metal Finishing Guidebook was available on-line for only a few months, but hard copies are readily available. Follow the link.

Refer to MIL-C-5541 Class 3.

Brian Kerluke
- Kelowna, British Columbia, Canada

I need to know if there is a way to coat an area that needs rework on aluminum parts if it needs to be re-machined, like a hole needs to be opened up.What can I do to coat the hole

Cecil veley
- Hannahan, South Carolina
2007

A. Chromate conversion "pens" are available from most of the suppliers of chromate conversion chemistry, Cecil.

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
2007

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