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[42864] Artykuł: Formation of a Mg-Al-Zn intermetallic surface layers on magnesiumCzasopismo: Metal 2013, 22nd International Conference on Metallurgy and Materials, Conference Proceedings Strony: 1261ISBN: 978-80-87294-39-0 Wydawca: TANGER LTD, KELTICKOVA 62, SLEZSKA, OSTRAVA 710 00, CZECH REPUBLIC Opublikowano: 2013 Autorzy / Redaktorzy / Twórcy Grupa MNiSW: Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science) Punkty MNiSW: 15 Klasyfikacja Web of Science: Proceedings Paper ![]() Keywords: magnesium  Mg-Al-Zn intermetallic phases  surface layer  microstructure  hardness  |
Surface layers containing intermetallic phases were fabricated on an Mg substrate by heating the Mg specimens in contact with the Al+Zn powder mixture at 445 degrees C in a vacuum furnace. The layers were produced from 80 wt.% Al+20 wt.% Zn and 60 wt.% Al+40 wt.% Zn powder mixtures. The microstructure and composition of the layers were analyzed by optical microscopy, scanning electron microscopy and energy dispersive spectroscopy. The examination results showed that the layers consisted of Mg-17(Al, Zn)(12) and Mg5Al2Zn2 intermetallic phases and a solid solution of Al and Zn in Mg. The microstructure of the layers was dependent on the content of Zn in the diffusion powder mixture, the higher the amount of Zn in the powder mixture, the higher the content of the Mg5Al2Zn2 phase in the layer microstructure. Alloyed surface layers had much higher hardness than the Mg substrate.