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Recommendation needed for black nickel vs. chrome plating

Hi,

I am looking for a black optical absorbing coating on the copper substrate. The optical radiation wavelength range would be between 1000 nm to 10,000 nm. The power density is high. My questions are:

1. Which plating is better between black nickel and black chrome?
2. what are the specifications should I request for my application?
3. Which company has more experiences for high quality job?

Xiaoyu,

Xiaoyu Li
- Boulder, Colorado
May 8, 2009

Ed. note: Sorry, this RFQ is old & outdated, so contact info is no longer available. However, if you feel that something technical should be said in reply, please post it; no public commercial suggestions please ( huh? why?)

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Ed. note: we can't print public responses to your 3rd question, Xiaoyu, but hopefully our supporting advertisers will contact you in private.

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