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Which plating is the best for glossy-black finishing? black chrome?

Q. I'm an optical engineer. I'm making a light absorber so called 'light trap', which is shaped as a cone. Its desirable function is a total extinction of incident light to the light trap. To do this, the inner surface of the cone should be a form of mirror-like surface with low optical reflectivity.

Would you recommend a proper plating method? From googling, I found that a black chrome plating might be a good candidate, but I'm not sure whether it provides a glossy surface and whether it provides a quite black color not gray.

Seongchong Park
research scientist - Daejeon, Republic of Korea
May 20, 2012

June 2, 2012

A. What metals are you planning to use? Have considered pure titanium? If yes, black matte on titanium is very color absorbing, although we have not conducted any experiments.

58574

Anna Berkovich
Russamer Lab

Pittsburgh, Pennsylvania

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