ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
White anodic coatings are gained by growth in situ on the aluminum alloy. The coatingspossess stable optical properties, excellent adhesive power, low cost, stability in the space environment,and so on, which can be widely used in the thermal control system of spacecrafts. In this article, thedeveloped Al2O3 thermal control coatings that had a low solar absorptance and a high infrared emittancewere gained in the electrolyte of sulfuric acid. The influences of various process parameters, such aselectrolyte temperature, current density, anodizing time, on the optical properties of the coatings wereinvestigated. AFM and XRD were used to characterize the microstructure of the coatings. Experimentalresults show the anodic coatings could reach a solar absorptance value lower than 0.20 and an infraredemittance higher than 0.80. Therefore, the coatings can be applied as important thermal control coatingsfor space applications
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.643.pdf
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