Black Coatings for Absolute Radiometers

Abstract

With radiometers in which electrical heating is substituted for radiant heating, corrections are necessary for radiation reflected by the blackened receiver and for the thermal A la radiation Btalon primaire au moyen d'btalons de Perot-Fabry intermbdiaires, ut,ilisbs sous incidence normale.

Carbon multi-walled nanotubes grown by HWCVD on a pyroelectric detector

“…These devices employ some form of thermal-absorber coating such as carbon-based paint or a diffuse metal such as gold black [3,4]. Carbon nanotube coatings present an alternative to the present technologies.…”

The Absolute Measurement of Radiant Power

“…The absolute thermopile was largely a copy of Gillham's (1962) disk radiometer, with the exception of the absorber layer, which was goldblack of 0.001-mm thickness (Blevin and Brown, 1966). The substrate for the detector element consisted of an aluminum disk, 10 mm in diameter and 0.5 mm thick.…”

Thermographic application of black coatings on metals

“…For thermographic studies, surfaces of samples are frequently blackened with "black coatings" [1,2,3] in order to enhance and homogenize their absorptivity and emissivity. Following applications, engineers can choose from a variety of black coatings, however the black paint technique [4,5] is widely used.…”