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Is anodizing or chromating better for flat black finish

Hi,
We need to paint a small number of aluminum components flat black. The alloy will vary. They will be subjected to minimal handling and will remain dry, but they will be exposed to intense UV. If one anodizes first do you need to primer? I have read that with powder coating it is not necessary to primer. If so, is this applicable to paint? What would you recommend to achieve the flattest black finish? Best regards, Jon B.

Jon Brown
equipment - Fremont California
1999

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Your have two options to solve the problem:

A.Conversion coating as preparation for paint . You can make clear conversion coating or yellow conversion coating. It is much better preparation for paint than any anodize . And of course much cheaper process.

B.Black kephos flat: This is a black anhydrous preparation for paint , it is applied and treated as paint but cannot stand alone without extra painting.The upper layer can be clear color paint or varnish.

The second suggestion can be available in the Henkel Surface Technology or straight by exporting from our company.

Yehuda Blau
YB Plating Engineering and Quality - Haifa Israel
1999