Accession Number:

AD0270453

Title:

NORMAL SPECTRAL REFLECTANCE OF ANODIZED COATINGS ON ALUMINUM, MAGNESIUM, TITANIUM AND BERYLLIUM

Descriptive Note:

Rept. for Jan 1959-May 1961 on Finishes and Materials Preservation

Corporate Author:

HONEYWELL RESEARCH CENTER HOPKINS MN

Report Date:

1961-09-01

Pagination or Media Count:

288.0

Abstract:

The object of this investigation was to study the effects of several variables in the anodizing process on the reflectance of anodized metals. Normal spectral reflectance data on 158 specimens of anodized Al, Mg, Ti, and Be are presented. For Al anodized in H2SO4 the ratio of solar absorptance to IR emittance was about 0.3, while the ratio for A110AT Ti anodized in NaOH was 7. In general, the anodizing process had a greater effect on the reflectance than did alloying elements in the metal. Measurements at elevated temperatures indicated a loss of water from coatings that contained water. In general, it was the presence of this water which produced high emittance in the IR region and gave low values for the solar absorptanceIR ratio.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Atomic and Molecular Physics and Spectroscopy
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE