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Spectral reflectance properties of electroplated and converted zinc for use as a solar selective coating
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | McDonald, G. E. Gianelos, L. Curtis, H. B. |
| Copyright Year | 1975 |
| Description | The spectral reflectance properties of electroplated and chemically converted zinc were measured for both chromate and chloride conversion coatings. The reflectance properties were measured for various times of conversion and for conversion at various chromate concentrations. The values of absorptance, integrated over the solar spectrum, and of infrared emittance, integrated over black body radiation at 250 F were then calculated from the measured reflectance values. The interdependent variations of absorptance and infrared emittance were plotted. The results indicate that the optimum combination of the highest absorptance in the solar spectrum and the lowest emittance in the infrared of the converted electroplated zinc is produced by chromate conversion at 1/2 concentration of the standard NEOSTAR chromate black solution for 0.50 minute or by chloride conversion for 0.50 minute. |
| File Size | 725041 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760006505 |
| Archival Resource Key | ark:/13960/t95766g46 |
| Language | English |
| Publisher Date | 1975-01-01 |
| Access Restriction | Open |
| Subject Keyword | Energy Production And Conversion Emission Spectra Spectrum Analysis Black Body Radiation Solar Collectors Infrared Spectra Absorptance Coatings Spectral Reflectance Zinc Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
