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[40604] Artykuł: Fabrication and microstructural characterization of Al/Zn-enriched layers on pure magnesiumCzasopismo: Materials Characterization Tom: 78, Zeszyt: Complete, Strony: 121-128ISSN: 1044-5803 Wydawca: ELSEVIER SCIENCE INC, 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA Opublikowano: 2013 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 45 Klasyfikacja Web of Science: Article ![]() ![]() ![]() ![]() Keywords: Magnesium  AlZn-enriched surface layer  Mg-Al-Zn intermetallic phases  Microstructure  Hardness  |
Al/Zn-enriched surface layers were fabricated by heating Mg specimens in contact with Al-Zn powder mixtures in a vacuum furnace at 445 degrees C. The layer formation process took place through partial melting at the Mg-substrate/powder-mixture interface. Heating times ranged from 20 to 80 min. The layer microstructure and composition were analyzed by optical microscopy (OM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The layers were 100-900 mu m in thickness, depending on the treatment time. The examination results revealed that the layers consisted of Mg-17(Al,Zn)(12) and Mg5Al2Zn2 intermetallic phases and a solid solution of Al and Zn in Mg. Between the Al/Zn-enriched layer and the Mg substrate, there was a transition zone of a solid solution of Al and Zn in Mg with a thickness of 20-30 mu m. The layers had much higher microhardness than the Mg substrate. (C) 2013 Elsevier Inc. All rights reserved.