NASA NTRS · 19930019082
Surface characterization of selected LDEF tray clamps
Abstract
The surface characterization of chromic acid anodized 6061-T6 aluminum alloy tray clamps has shown differences in surface chemistry depending upon the position on the Long Duration Exposure Facility (LDEF). Water contact angle results showed no changes in wettability of the tray clamps. The overall surface topography of the control, trailing edge(E3) and leading edge(D9) samples was similar. The thickness of the aluminum oxide layer for all samples determined by Auger depth profiling was less than one micron. X-ray photoelectron spectroscopy (XPS) analysis of the tray clamps showed significant differences in the surface composition. Carbon and silicon containing compounds were the primary contaminants detected.
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Cromer, T. F., Grammer, H. L., Wightman, J. P., Young, Philip R., Slemp, Wayne S.. 1993-04-01. Surface characterization of selected LDEF tray clamps. https://ntrs.nasa.gov/citations/19930019082
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