| Autor: |
Mirtich, Michael J., Kussmaul, Michael |
| Zdroj: |
Surface and Coatings Technology; December 1987, Vol. 33 Issue: 1 p511-521, 11p |
| Abstrakt: |
A discharge chamber of a 30 cm argon ion source was successfully used to texture potential space radiator materials for the purpose of obtaining values of thermal emittance greater than 0.85 at 700 and 900 K. Some samples were also treated in acid before texturing. To evaluate the durability of the textured materials to atomic oxygen, samples were exposed to a plasma asher, a device that produced atomic oxygen. The spectral emittance between 2.0 and 15 μm was measured before and after the textured materials were exposed to the plasma asher. The results indicate that copper with extremely high values of emittance after texturing (0.978 and 0.983) at 700 K and 900 K respectively did not change its values of emittance after ashing, whereas the emittance of stainless steel fell below 0.85 after ashing. These data, scanning electron photomicrographs and the results of texturing and ashing titanium and Nb-1 wt.%Zr are presented in this paper. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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