Method for emissivity measurement of semitransparent coatings at ambient temperature.

ABSTRACT: Coatings deposited on a material surface are effective way of changing its surface properties. For increasing or decreasing radiation heat transfer, coatings with high or low emissivity are used. Measurement of spectral emissivity is a fundamental step to effective use of coatings for this application. Up to now the measurement methods are focused on bulk samples and mainly opaque ones. Here we present a method enabling measurement of emissivity of semitransparent coating itself, although it is deposited on a substrate. The method is based on measurement of transmittance and reflectance using an integration sphere system and Fourier transform infrared (FTIR) spectrometer for samples with two different coating thicknesses deposited on transparent substrates. Measured transmittance of the co

SUBMITTER: Honnerova P 

PROVIDER: S-EPMC5431223 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature