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  for Metal Finishing since 1989
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Thermal conductive powder

I am looking for information on a thermal conductive powder coating (and company to apply it) that will increase heat dissipation, rather than insulate heat, from outside surface of the aluminum die cast or extruded housing. It very desirable to have nice looking white and/or yellow colors. I am open to suggestions for cost affective alternatives to the powder coating. Heat dissipation, money and color -these are the critical factors.

Boris Shteynberg
- San Francisco, California, USA

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Boris,

A silver or white silicone powder will reflect heat from an adjacent source and withstand temperature of 600 F (plus). Automatic application equipment can be provided to precisely control the thickness of powder. If this does not provide the answer, you may want to expand on the requirement.

Herb Ashley
- Smartt, TN

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Dear Boris,

The Boron Nitride may be suitable for your process needs.
There is a boron nitride coating especially for aluminum die castings; the coating layer will provide the high temperature protection, lubricious surface, anti-corrosive and anti-oxidation.
The boron nitride itself has good thermal conductive of 300 W/mK. It is better them aluminum.

Kent Chu
National Nitride Technologies Co., Ltd. - Taiwan