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HYDROGENATION PROPERTIES OF BALL-MILLED Mg-Ti-C-Zr COMPOSITE
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SYSNO ASEP 0468223 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title HYDROGENATION PROPERTIES OF BALL-MILLED Mg-Ti-C-Zr COMPOSITE Author(s) Král, Lubomír (UFM-A) RID, ORCID
Čermák, Jiří (UFM-A) RID, ORCID
Roupcová, Pavla (UFM-A) RID, ORCIDNumber of authors 3 Source Title METAL 2016: 25th International Conference on Metallurgy and Materials. - Ostrava : Tanger Ltd., 2016 - ISBN 978-80-87294-67-3 Pages s. 1445-1449 Number of pages 5 s. Publication form Medium - C Action METAL 2016 - Anniversary International Conference on Metallurgy and Materials /25./ Event date 25.05.2016 - 27.05.2016 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords hydrides ; hydrogen storage ; Mg-alloys Subject RIV JJ - Other Materials R&D Projects ED1.1.00/02.0068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 UT WOS 000391251200236 EID SCOPUS 85010817740 Annotation The hydrogen storage properties of ball-milled Mg-Ti-Zr-C composite (1.8 wt.% Ti, 1.9 wt.% Zr and 0.2 wt.% C) were investigated. It has been previously shown, that the addition of Ti, Zr and C improved its storage properties. This beneficial effect of additives upon hydrogen storage properties can be explained by catalysis by the particles rich in Ti or Zr located on the surface of Mg grains. They provide effective pathways for the hydrogen diffusion into the MgH2. The morphological and microstructural characteristics were investigated by scanning electron microscopy and by X-ray diffraction. The hydrogen sorption was measured by Sieverts method using Setaram PCT-Pro device. In this paper, sorption behaviour of the composite after ball-milling and after aging on the air was compared. The ball-milled composite adsorbed 3.5 wt.% H2 within 10 min at 623 K. However, hydrogen storage capacity of the composite aged on the air for 7 months remarkably decreased: The aged composite adsorbed within 10 min only 2 wt.% H2 at 623 K and the sorption capacity decreased from 4.7 wt.% H2 to 2.1 wt.% H2. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2017
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