Погребняк, Олександр ДмитровичПогребняк, Александр ДмитриевичPohrebniak, Oleksandr DmytrovychКаверіна, Аліса Шер АхмадКаверина, Алиса Шер АхмадKaverina, Alisa Sher AkhmadДрозденко, Олексій ОлександровичДрозденко, Алексей АлександровичDrozdenko, Oleksii OleksandrovychSobol, O.V.Komarov, F.F.Tyurin, Yu.N.Yakuschenko, I.V.Partyka, J.2014-05-232014-05-232012Structure, Properties and Element Composition of Alumina Coatings, Obtained by Micro-Arc Oxidation Method / A. S. Kaverina, J. Partyka, A. D. Pogrebnjak et al. // Nanomaterials: Applications & Properties (NAP-2012) : 2-nd International conference, Alushta, the Crimea, September 17-22, 2012 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2012. - V. 1, No2. - 02NFC32-02NFC320000-0002-9218-64920000-0002-0047-739Xhttp://essuir.sumdu.edu.ua/handle/123456789/34914Coatings of aluminium oxide Al2O3 were obtained by micro-arc oxidation under different conditions of deposition. They were analysed by such methods as: positron annihilation spectroscopy (PAS), Rutherford backscattering (RBS), X-ray diffraction (XRD) and scanning electron microscopy with microanalysis (SEM with EDS). Investigated samples showed good adhesion to the substrate, low concentration of nanopores in the bulk. Content of amorphous phase in the coating was about 20 vol.%, and metastable -Al2O3 - Al2O3 phases about less than 10 vol.%. It was demonstrated that by varying of parameters of deposition, it is possible to control the physical – mechanical properties of obtained coatings as well as their element composition and surface morphology. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/34914encnemicro-arc oxidationAl2O3crystalline and amorphous phasethe annihilation of positronsTheses