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Microwave versus Conventional Sintering of NiTi Alloys Processed by Mechanical Alloying

2022-08Journal article Open access
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dc.contributor.authorTeixeira, Rodolfo da Silva
dc.contributor.authorOliveira, R. V.
dc.contributor.authorRodrigues, Patricia Freitas
dc.contributor.authorMascarenhas, João
dc.contributor.authorNeves, Filipe
dc.contributor.authorPaula, Andersan dos Santos
dc.date.accessioned2022-10-21T15:17:04Z
dc.date.available2022-10-21T15:17:04Z
dc.date.issued2022-08
dc.description.abstractABSTRACT: The present study shows a comparison between two sintering processes, microwave and conventional sintering, for the manufacture of NiTi porous specimens starting from powder mixtures of nickel and titanium hydrogenation-dehydrogenation (HDH) milled by mechanical alloying for a short time (25 min). The samples were sintered at 850 degrees C for 15 min and 120 min, respectively. Both samples exhibited porosity, and the pore size results are within the range of the human bone. The NiTi intermetallic compound (B2, R-phase, and B19 ') was detected in both sintered samples through X-ray diffraction (XRD) and electron backscattering diffraction (EBSD) on scanning electron microscopic (SEM). Two-step phase transformation occurred in both sintering processes with cooling and heating, the latter occurring with an overlap of the peaks, according to the differential scanning calorimetry (DSC) results. From scanning electron microscopy/electron backscatter diffraction, the R-phase and B2/B19 ' were detected in microwave and conventional sintering, respectively. The instrumented ultramicrohardness results show the highest elastic work values for the conventionally sintered sample. It was observed throughout this investigation that using mechanical alloying (MA) powders enabled, in both sintering processes, good results, such as intermetallic formation and densification in the range for biomedical applications.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationTeixeira, Rodolfo da Silva... [et.al.] - Microwave versus Conventional Sintering of NiTi Alloys Processed by Mechanical Alloying. In: Materials, 2022, vol. 15 (16), article nº 5506pt_PT
dc.identifier.doi10.3390/ma15165506pt_PT
dc.identifier.eissn1996-1944
dc.identifier.urihttp://hdl.handle.net/10400.9/3922
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationTowards self-repairing metallic materials
dc.relationCentre for Mechanical Enginnering, Materials and Processes
dc.relation.publisherversionhttps://doi.org/10.3390/ma15165506pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPowder metallurgypt_PT
dc.subjectNi-Ti alloyspt_PT
dc.subjectMechanical alloyingpt_PT
dc.subjectMicrowave processingpt_PT
dc.subjectMicrostructurespt_PT
dc.subjectMechanical propertiespt_PT
dc.titleMicrowave versus Conventional Sintering of NiTi Alloys Processed by Mechanical Alloyingpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleTowards self-repairing metallic materials
oaire.awardTitleCentre for Mechanical Enginnering, Materials and Processes
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTM-CTM%2F29101%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00285%2F2020/PT
oaire.citation.titleMaterialspt_PT
oaire.citation.volume15pt_PT
oaire.fundingStream9471 - RIDTI
oaire.fundingStream6817 - DCRRNI ID
person.familyNameda Silva Teixeira
person.familyNameOliveira
person.familyNameFreitas Rodrigues
person.familyNameMascarenhas
person.familyNameNeves
person.familyNamedos Santos Paula
person.givenNameRodolfo
person.givenNameRebeca
person.givenNamePatricia
person.givenNameJoão
person.givenNameFilipe
person.givenNameAndersan
person.identifier862130
person.identifier.ciencia-idED1E-21D9-61F8
person.identifier.ciencia-idCF18-4E59-B6B9
person.identifier.ciencia-id1815-040B-3FEF
person.identifier.orcid0000-0002-2961-1898
person.identifier.orcid0000-0002-3225-2996
person.identifier.orcid0000-0001-7616-6793
person.identifier.orcid0000-0003-0440-8057
person.identifier.orcid0000-0002-1251-053X
person.identifier.orcid0000-0002-0904-4240
person.identifier.ridR-2010-2018
person.identifier.ridL-3318-2014
person.identifier.ridA-7836-2012
person.identifier.ridM-7262-2018
person.identifier.scopus-author-id57194174966
person.identifier.scopus-author-id7004435348
person.identifier.scopus-author-id8956940900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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