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Proceedings Paper

Effects Of Polishing On 10.6 On Light Absorption Of Aluminum And Titanium Alloys
Author(s): T. T. Saito; J. G. Gowan
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Paper Abstract

This study adds evidence to the hypothesis that polishing can degrade the IR absorption of bare metal surfaces. The alloys of Al and Ti as well as the metallographic polishing techniques are described. Characterization of the samples included 10.6 pm absorption and reflectivity, total-integrated-scatter at 0.6 01, Nomarski microscopy,Taleystep surface roughness, Knoop hardness, and an x-ray nondispersive analysis attachment to a scanning electron microscope. The titanium's hardness did not significantly change during polishing and the absorption was reasonably correlated to the surface roughness for a range of 0.127 to 0.16 and 28 to 71 Å (rms) respectively. The absorption of the Al samples was not correlated to its roughness. The best polished sample had an absorption of 0.053 as compared to an unpolished (as received) sample which had an absorption of 0.022. The absorption of aluminum was well correlated to the microhardness indicating that the increase in absorption during the polishing procedure may be due to work hardening.

Paper Details

Date Published: 15 January 1976
PDF: 5 pages
Proc. SPIE 0065, Design, Manufacture and Application of Metal Optics, (15 January 1976); doi: 10.1117/12.954512
Show Author Affiliations
T. T. Saito, Air Force Weapons Laboratory (United States)
J. G. Gowan, Air Force Weapons Laboratory (United States)


Published in SPIE Proceedings Vol. 0065:
Design, Manufacture and Application of Metal Optics
William P. Barnes, Editor(s)

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