The role of different high energy ball milling conditions of molybdenum powder on the resulting particles size and morphology

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dc.contributor.authorDyčková, Luciecs
dc.contributor.authorCasas Luna, Marianocs
dc.contributor.authorTorres Rodríguez, Jorge Albertocs
dc.contributor.authorDyčka, Martincs
dc.contributor.authorJech, Davidcs
dc.contributor.authorDvořák, Karelcs
dc.contributor.authorDeák, Andréacs
dc.contributor.authorČelko, Ladislavcs
dc.date.accessioned2020-10-29T10:05:38Z
dc.date.available2020-10-29T10:05:38Z
dc.date.issued2019-05-24cs
dc.description.abstractHigh energy ball milling is a powder processing method in which the powder particle size can be decreased to micrometer size in a relatively short period of time. This method is based on the friction and the high energy kinetic collisions between the balls and the trapped powder particles. The milling process is influenced by many process variables such as mainly the rotational speed, ball to powder weight ratio and processing time. In the present study, high energy ball milling process was performed for molybdenum powder using a high energy ball mill under different milling conditions varying the: (i) rotational speed from 600 to 800 rpm, (ii) ball to powder weight ratio of 100:3 and 100:6, (iii) milling time in the range of 10 to 60 minutes, (iv) process control agent using polyethylene glycol, and (v) milling atmosphere under air or nitrogen. The used initial molybdenum powder was of globular morphology and 100 µm in particle size. The powders after milling were characterized by a scanning electron microscope (SEM) and a laser diffraction size analysis. The particle size of milled powders was decreased down to 1.1 µm. As the most effective ball to powder weight ratio was found 100:6 with the milling speed of 800 rpm. The milling time played a crucial role for the refinement of particles up to 45 min, where the further milling had negligible effect on the overall trend of particle size evolution.en
dc.formattextcs
dc.format.extent1463-1469cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMetal 2019. 2019, p. 1463-1469.en
dc.identifier.isbn978-80-87294-92-5cs
dc.identifier.other162554cs
dc.identifier.urihttp://hdl.handle.net/11012/184690
dc.language.isoencs
dc.publisherTanger Ltd.cs
dc.relation.ispartofMetal 2019cs
dc.relation.urihttps://metal2019.tanger.cz/files/uploads/02//METAL2019_Conference_Proceedings_Content.pdfcs
dc.rights(C) Tanger Ltd.cs
dc.rights.accessopenAccesscs
dc.subjectgranulometryen
dc.subjecthigh energy ball millingen
dc.subjectmilling parametersen
dc.subjectmolybdenumen
dc.subjectparticle sizeen
dc.titleThe role of different high energy ball milling conditions of molybdenum powder on the resulting particles size and morphologyen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionacceptedVersionen
sync.item.dbidVAV-162554en
sync.item.dbtypeVAVen
sync.item.insts2020.10.29 11:05:38en
sync.item.modts2020.10.27 16:15:23en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Charakterizace materiálů a pokročilé povlaky 1-06cs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Technologie hmot a dílců AdMaScs
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