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PREPARATION OF NB – NB3AL/AL2O3 NANOCOMPOSITE POWDER BY MECHANO-CHEMICAL REACTION

1 HANUSOVÁ Petra
Co-authors:
1 ČUPERA Jan 1 DLOUHÝ Ivo
Institution:
1 Brno University of Technology, Faculty of Mechanical Engineering, Institute of Materials Science and Engineering, NETME Centre, Brno, Czech Republic, EU, hanusova@fme.vutbr.cz
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
1445-1450
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
293 views / 120 downloads
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Abstract

Mechanochemical processing route appears to be an advanced technique for synthesis of nanosized materials of composite type. The work is focused on the synthesis of Nb-Nb3Al/Al2O3 composite by mechanical alloying (MA). For these purposes, a mixture of niobium (V) oxide and pure aluminum powders was subjected to high energy ball milling. The structural and phase analyses of powder particles before and after milling for different times was conducted by scanning electron microscopy (SEM) and X-ray diffractometry (XRD). Thermal properties were detected by using differential scanning calorimetry (DSC). Formation of the Nb/Nb3Al nanocomposite was proved, as a side effect of the reactions almost alumina matrix was formed during mechanochemical reaction for the Nb2O5 / Al ratio used.

Keywords: mechanical alloying, mechanochemical synthesis, intermetallics, niobium aluminate

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