Abstract
Comprehensive microstructure studies of the surfaces of duralumin sheets exposed to an intense microsecond СО2 laser pulse (Е ~ 500 J) are performed for the first time. The irradiated area is ~100 cm2. A pulse with a duration of ~5 μs has an ~200 ns leading peak. Passivated duralumin sheets subjected to pressure and thermal treatment resulting in the formation of Al2O3 layers ~7 μm thick are irradiated. Electron and atomic force microscopy, X-ray spectral analysis, and optical profilometry are used in the study. Detected traces of nonequilibrium evaporation contained a polycrystalline aggregate of several stoichiometric and nonstoichiometric phases of aluminum oxide and its compounds with manganese and magnesium.
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Original Russian Text © V.E. Rogalin, O.M. Kugaenko, E.E. Ashkinazi, M.S. Andreeva, S.A. Filin, 2016, published in Izvestiya Rossiiskoi Akademii Nauk, Seriya Fizicheskaya, 2016, Vol. 80, No. 12, pp. 1688–1692.
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Rogalin, V.E., Kugaenko, O.M., Ashkinazi, E.E. et al. Examining surfaces of oxidized aluminum exposed to СО2 laser pulses. Bull. Russ. Acad. Sci. Phys. 80, 1489–1493 (2016). https://doi.org/10.3103/S1062873816120170
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DOI: https://doi.org/10.3103/S1062873816120170