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Helium and deuterium irradiation effects in tungsten-based materials with titanium

2018-12-15Journal article Restricted access
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dc.contributor.authorCatarino, Norberto
dc.contributor.authorDias, Marta
dc.contributor.authorLopes, Jose
dc.contributor.authorJepu, Ionut
dc.contributor.authorAlves, E.
dc.date.accessioned2018-05-09T09:28:16Z
dc.date.available2018-05-09T09:28:16Z
dc.date.issued2018-12-15
dc.description.abstractPure Tungsten (W) will be used as plasma facing component in fusion devices due to its high melting point, good thermal conductivity and low sputtering yield. However, its structural application as plasma facing component (PFC) is still restricted by its low fracture toughness associated with the high ductile to brittle transition temperature (DBTT). In the present study tungsten titanium (W-Ti) samples were produced by Ti implantation at room temperature and 500 °C with a constant fluence of 2 × 1021 at/m2 and an energy of 100 keV. In order to understand the fundamental mechanisms which govern the behavior of defect dynamics in tungsten under reactor conditions, W-Ti materials were implanted at room temperature with 10 keV of He+ with a constant fluence of 5 × 1021 at/m2 and 5 keV of D+ with fluences in the range of 0.1 × 1021–5 × 1021 at/m2. Surface structure and morphology changes were investigated by scanning electron microscopy and X-ray diffraction. Rutherford backscattering spectrometry, nuclear reaction analysis and thermal desorption spectroscopy methods were used to provide information about the distribution of Ti, He and D on W. No changes in the microstructure were observed after Ti implantation in the W plates. NRA analysis showed that D retention in the W-Ti samples is higher after sequential He and D implantation when compared with single D implantation. The diffractogram of W-Ti samples implanted with He evidence a broadening of the W peaks. This effect is believed to be associated with the high volume fraction of the bubbles that may cause internal stress fields inducing extended defects like dislocations which distort the crystal lattice.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCATARINO, N.; [et al] – Helium and deuterium irradiation effects in tungsten-based materials with titanium. Surface and Coatings Technology. ISSN 0257-8972. Vol. 355 SI (2018), pp. 143-147pt_PT
dc.identifier.doihttps://doi.org/10.1016/j.surfcoat.2018.03.015pt_PT
dc.identifier.issn0257-8972
dc.identifier.urihttp://hdl.handle.net/10400.21/8495
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPROGRAMA AVANÇADO EM CIÊNCIA E ENGENHARIA DE PLASMAS - APPLAUSE
dc.relation.publisherversionhttps://reader.elsevier.com/reader/sd/BB956CB18DECCFDBFBBB2CD42EF25E3B0C5BFF8DF9D45CCAD584A72FC24B4CA730A4A21C9E2EF42FFA474F24D911FFF9#pf1pt_PT
dc.subjectTungstenpt_PT
dc.subjectTitaniumpt_PT
dc.subjectDeuterium inventorypt_PT
dc.subjectHelium implantationpt_PT
dc.titleHelium and deuterium irradiation effects in tungsten-based materials with titaniumpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitlePROGRAMA AVANÇADO EM CIÊNCIA E ENGENHARIA DE PLASMAS - APPLAUSE
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/PD%2FBD%2F52411%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FFIS%2F50010%2F2013/PT
oaire.citation.endPage147pt_PT
oaire.citation.startPage143pt_PT
oaire.citation.titleSurface and Coatings Technologypt_PT
oaire.fundingStreamOE
oaire.fundingStream5876
person.familyNameCatarino
person.familyNameRosado Silva Dias
person.familyNameLopes
person.familyNameJepu
person.familyNameAlves
person.givenNameNorberto
person.givenNameMarta Sofia
person.givenNameJose
person.givenNameIonut
person.givenNameEduardo
person.identifier.ciencia-id7A16-E80B-04A3
person.identifier.ciencia-id0E13-5F70-9D8A
person.identifier.ciencia-id7911-8653-3CF4
person.identifier.orcid0000-0003-3879-1533
person.identifier.orcid0000-0001-6797-7711
person.identifier.orcid0000-0003-3793-8898
person.identifier.orcid0000-0001-8567-3228
person.identifier.orcid0000-0003-0633-8937
person.identifier.ridQ-4663-2017
person.identifier.ridE-1451-2016
person.identifier.ridC-2195-2012
person.identifier.scopus-author-id54583124100
person.identifier.scopus-author-id55778145481
person.identifier.scopus-author-id35208635700
person.identifier.scopus-author-id56467741400
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.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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