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dc.contributor.authorHadjiafxenti, A.en
dc.contributor.authorGunduz, I. E.en
dc.contributor.authorDoumanidis, C. C.en
dc.contributor.authorRebholz, Clausen
dc.creatorHadjiafxenti, A.en
dc.creatorGunduz, I. E.en
dc.creatorDoumanidis, C. C.en
dc.creatorRebholz, Clausen
dc.date.accessioned2019-05-06T12:23:41Z
dc.date.available2019-05-06T12:23:41Z
dc.date.issued2014
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/48398
dc.description.abstractLow-energy ball milling of aluminum and nickel particles with an overall composition corresponding to the NiAl intermetallic phase was performed up to milling durations of 13 h. The milled powders and cold-compacted pellets were ignited using a low-energy spark. Interrupted thermal analysis and X-ray diffraction was performed to investigate the effect of milling time on intermetallic phase formation. The results show that microstructural refinement with increasing milling times increases reactivity, where the intermetallic formation temperatures reduce to those of sputtered multilayer foils with a similar phase formation sequence. NiAl intermetallic phase starts forming at 12 h of milling. Loose powders milled for 11 and 12 h and the corresponding pellets ignite locally with uniform thermal wave fronts self-propagating at velocities up to 0.24 m/s. © © 2013 Elsevier B.V. All rights reserved.en
dc.language.isoengen
dc.sourceVacuumen
dc.subjectNanostructuresen
dc.subjectPowdersen
dc.subjectX ray diffractionen
dc.subjectThermoanalysisen
dc.subjectBall millingen
dc.subjectMilling (machining)en
dc.subjectMultilayer foilsen
dc.subjectNickelen
dc.subjectElectric sparksen
dc.subjectPelletizingen
dc.subjectIgnitionen
dc.subjectIntermetallic formationen
dc.subjectIntermetallic phaseen
dc.subjectLow energy ball millingsen
dc.subjectMicrostructural refinementen
dc.subjectNi-Al intermetallicsen
dc.subjectNickel aluminidesen
dc.subjectPhase formation sequenceen
dc.subjectSelf propagating reactionen
dc.subjectSelf-propagating reactionen
dc.subjectWavefrontsen
dc.titleSpark ignitable ball milled powders of Al and Ni at NiAl compositionen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1016/j.vacuum.2013.09.006
dc.description.volume101
dc.description.startingpage275
dc.description.endingpage278
dc.author.facultyΠολυτεχνική Σχολή / Faculty of Engineering
dc.author.departmentΤμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering
dc.type.uhtypeArticleen
dc.description.totalnumpages275-278


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