Pressure-less spark plasma sintering of 3D-plotted titanium porous structures

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dc.contributor.authorKashimbetova, Adeliacs
dc.contributor.authorSlámečka, Karelcs
dc.contributor.authorDíaz de la Torre, Sebastiancs
dc.contributor.authorHernández-Morales, Bernardocs
dc.contributor.authorMendez-Garcia, Jose C.cs
dc.contributor.authorPina-Barba, Maria Cristinacs
dc.contributor.authorHui, Davidcs
dc.contributor.authorČelko, Ladislavcs
dc.contributor.authorMontufar Jimenez, Edgar Benjamincs
dc.coverage.issue1cs
dc.coverage.volume22cs
dc.date.issued2022-12-14cs
dc.description.abstractAdditive manufacturing of titanium porous structures by direct ink writing involves the removal of the binder needed for powder extrusion and subsequent sintering to consolidate the 3D-plotted body. In this work, pressure-less spark plasma sintering (PL-SPS) was systematically studied for fast consolidation of titanium porous structures. Furthermore, poloxamer 407 was used as the binder and the lowest temperature possible was identified for its thermal elimination. The results show for the first time that PL-SPS generated sintering conditions similar to those generated by conventional pressure-less sintering, producing hierarchical titanium porous structures with equivalent densification, shrinkage, and surface roughness, but with minimal grain growth. The thermal responses of the die and material showed efficient radiation heat transfer, allowing fast heating (100 °C/min) of one sample per run, promoting the formation of sintering necks and powder densification in 10 min, which is much faster than conventional sintering that requires at least 2 h of dwell time. However, the process operates at a sintering temperature 200-300 °C above the conventional sintering temperature, and at the expense of high consumption of electrical energy to achieve such a high heating rate. The mechanical strength of the resulting titanium structures increases with increasing strand densification at nearly constant strand separation, resulting in strong and plastic porous structures.en
dc.formattextcs
dc.format.extent2147-2157cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJournal of Materials Research and Technology. 2022, vol. 22, issue 1, p. 2147-2157.en
dc.identifier.doi10.1016/j.jmrt.2022.12.072cs
dc.identifier.issn2238-7854cs
dc.identifier.orcid0000-0002-1945-2563cs
dc.identifier.orcid0000-0001-8847-075Xcs
dc.identifier.orcid0000-0003-0264-3483cs
dc.identifier.orcid0000-0002-8122-4000cs
dc.identifier.other183243cs
dc.identifier.researcheridD-9475-2012cs
dc.identifier.researcheridD-6870-2012cs
dc.identifier.researcheridF-8040-2016cs
dc.identifier.scopus16242487800cs
dc.identifier.scopus25621022900cs
dc.identifier.scopus23397943300cs
dc.identifier.urihttp://hdl.handle.net/11012/209267
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofJournal of Materials Research and Technologycs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S2238785422019627cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2238-7854/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectDirect ink writingen
dc.subjectMetal porous structureen
dc.subjectRobocastingen
dc.subjectScaffolden
dc.subjectSpark plasma sinteringen
dc.subjectTitaniumen
dc.titlePressure-less spark plasma sintering of 3D-plotted titanium porous structuresen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-183243en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:48:21en
sync.item.modts2025.01.17 16:39:27en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav fyzikálního inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé povlakycs
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