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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Touch Up of Conversion Coating

2004

I am a Senior Product Engineer and we manufacture printed circuit boards bonded to heatsinks amoung other products. I have an application where scratches are not allowed on the heat sink metal. The metal is plated with nickel, then plated with Cadmium and then conversion coated with Iridit 80. I need to touch up these scratche and need to know how I can go about do this. These are small areas. I tried just 'brush" coating it with the Iridite but it removes the original coating.

Can someone give me some ideas how to accomplish this task. The product if very expensive.

Thanks, Mark

Mark B.
Coretec Cleveland - Cuyahoga Falls, Ohio

Soak a scrap of absorbent paper (paper towel or bathroom tissue) with the solution and lay it on the affected area. Leave it there for several minutes, then peel it off. Don't rub or handle until dry.

Tom Gallant
- Long Beach, California, USA
2004

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