About: Effect of hydrogen on formation of Fe-Al nanoparticles by mechanical milling

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.scientific.net/JNanoR.29.23
Description	Nanocrystalline powders of iron aluminum alloy of the Fe82Al18 nominal composition were prepared under air, hydrogen and nitrogen atmospheres from the Fe and Al elemental powders by mechanical alloying and also from the conventionally cast Fe82Al18 alloy by the high-energy ball milling. The intensive plastic deformation during high-energy mechanical treatment has introduced high concentrations of open volume defects and contributed to a rapid decrease in the crystallite size down to a nanoscopic range. The hydrogen atmosphere was found to be the most efficient for the Fe-Al mechanical alloying since it has resulted into the fully alloyed Fe82Al18 after 30 h of milling. On the other hand, the nitrogen and air atmosphere have slightly prevented mechanical alloying and after the same milling time the pure iron particles were still detected in the powder mixtures. This partial suppression of the mechanical alloying process is explained by a formation of thin iron nitride and/or oxide layers on the surface of Fe particles preventing mutual inter-diffusion of Fe and Al atom Nanocrystalline powders of iron aluminum alloy of the Fe82Al18 nominal composition were prepared under air, hydrogen and nitrogen atmospheres from the Fe and Al elemental powders by mechanical alloying and also from the conventionally cast Fe82Al18 alloy by the high-energy ball milling. The intensive plastic deformation during high-energy mechanical treatment has introduced high concentrations of open volume defects and contributed to a rapid decrease in the crystallite size down to a nanoscopic range. The hydrogen atmosphere was found to be the most efficient for the Fe-Al mechanical alloying since it has resulted into the fully alloyed Fe82Al18 after 30 h of milling. On the other hand, the nitrogen and air atmosphere have slightly prevented mechanical alloying and after the same milling time the pure iron particles were still detected in the powder mixtures. This partial suppression of the mechanical alloying process is explained by a formation of thin iron nitride and/or oxide layers on the surface of Fe particles preventing mutual inter-diffusion of Fe and Al atom (en)
Title	Effect of hydrogen on formation of Fe-Al nanoparticles by mechanical milling Effect of hydrogen on formation of Fe-Al nanoparticles by mechanical milling (en)
skos:prefLabel	Effect of hydrogen on formation of Fe-Al nanoparticles by mechanical milling Effect of hydrogen on formation of Fe-Al nanoparticles by mechanical milling (en)
skos:notation	RIV/00216208:11320/14:10290408!RIV15-MSM-11320___
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(7AMB12SK009), P(7AMB14SK185), P(GAP108/11/1350), S
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Lukáč, František Vlček, Marián Procházka, Ivan Čížek, Jakub
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	13339
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/14:10290408
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	mechanical milling; nanoparticles; Fe-Al; hydrogen (en)
http://linked.open.../riv/klicoveSlovo	Fe-Al hydrogen nanoparticles mechanical milling
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[96FC7B82B563]
http://linked.open...i/riv/nazevZdroje	Journal of Nano Research
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Study of hydrogen interactions with defects in structural alloys using positron annihilation spectroscopy Microstructure of Fe-Al based alloys Effects of cores and boundaries of nanograins on structural and physical properties of ball milled and mechanically alloyed iron-based materials.
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	29
http://linked.open...iv/tvurceVysledku	Lukáč, František Procházka, Ivan Vlček, Marián Čížek, Jakub Jirásková, Yvonna Janičkovič, Dušan Švec, Peter
issn	1662-5250
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.4028/www.scientific.net/JNanoR.29.23
http://localhost/t...ganizacniJednotka	11320

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