Ceramic Coatings with Controlled Reflective and Emissive Properties

Autor:	J. R. Jasperse, D. G. Burgess, E. P. Flint
Rok vydání:	1961
Předmět:	Materials science Infrared chemistry.chemical_element Barium Silicate chemistry.chemical_compound chemistry visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Emissivity Thermal emittance Ceramic Composite material Inconel Frit
Zdroj:	Journal of the American Ceramic Society. 44:446-450
ISSN:	1551-2916 0002-7820
Popis:	Two types of ceramic coatings were formulated for application to Inconel to give (a) the highest possible emittance from room temperature to about 1200°C. and (b) the highest possible reflectance to solar energy (0.4 to 2.0 μ) while having high emissivity in the infrared from 25° to 700° C. or higher. Both types of coatings were formulated from a modified barium silicate frit. This frit was opacified with various black spinels to give the (a)-type enamels having total normal emittances ranging from 0.74 to 0.87. The (b)-type enamels were made with equal parts of stannic and eerie oxides as opacifiers. At thicknesses greater than 5 mils, these had hemispherical reflectances varying between 0.67 and 0.62 at wave lengths of 0.6 to 2.6 μ respectively, together with total emittances of 0.75 at 400°C. and 0.60 at 800° C.
Databáze:	OpenAIRE
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