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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
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
finishing.com - Pine Beach, New Jersey
2007

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