Black Electrochemical Coatings for Aerospace and Allied Applications

Coatings comprising carbon nanotubes (CNT) are super black, that is, characterized by uniformly low reflectance over a broad range of wavelengths from the visible to far infrared [[]1, 2]. This is attributable to the intrinsic properties as well as the morphology (density, thickness, disorder, and tube size) of graphitic material. About two decades ago, diamond-like carbon (DLC) was the primary candidate for the black coating of the large optical baffles, as it has a low outgassing rate [[]3-5].