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Low-temperature nitriding of VA-group metal powders (V,Nb,Ta) in flowing NH3 gas under heating with concentrated solar beam at PSA

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dc.contributor.authorFernandes, Jorge Cruz
dc.contributor.authorOliveira, Fernando Almeida Costa
dc.contributor.authorRosa, Luís Guerra
dc.contributor.authorRodríguez, José
dc.contributor.authorCañadas, Inmaculada
dc.contributor.authorMagalhães, Teresa
dc.contributor.authorShohoji, Nobumitsu
dc.date.accessioned2015-08-03T15:54:41Z
dc.date.available2015-08-03T15:54:41Z
dc.date.issued2015
dc.description.abstractOver the last two decades, we have been using concentrated solar beam as the reaction heat source for synthesizing carbides and nitrides of d-group transition elements in view of usage of ecological renewable energy source in place of conventional heat sources using electricity or gas. In recent works [1,2] nitriding of VIa-group metals (Cr, Mo, W) and Fe in stream of NH3 gas with suppressed extent of dissociation (uncracked NH3) was attempted under heating with concentrated solar beam. It was demonstrated that mono-nitride -MoN of Mo and sub-nitride -Fe2N of Fe that are known to be impossible to synthesize in N2 gas environment even at elevated pressure p(N2) were successfully synthesized by the reactions of these metals in stream of NH3 gas under heating with concentrated solar beam up to 800ºC. In the present work, nitriding of Va-group metals (V, Nb and Ta) was attempted in stream of NH3 gas under irradiation of concentrated solar beam. By up to 90 min heating in uncracked NH3 under concentrated solar beam up to 800ºC, reaction products were identified by X-ray diffraction (XRD) analysis to be consisted of mono-nitride MN co-existent with sub-nitride M2N.por
dc.identifier.citationFernandes, J.C.; Oliveira, F.A.C.; Rosa, L.G.; Rodríguez, J.; Canadas, I.; Magalhães, T.; Shohoji, N. - Low-temperature nitriding of VA-group metal powders (V,Nb,Ta) in flowing NH3 gas under heating with concentrated solar beam at PSA. In: Materiais 2015: VII International Materials Symposium/XVII Conference of Sociedade Portuguesa dos Materiais, Book of Abstracts, Porto, Portugal, 21-23 June, 2015, 2 p.por
dc.identifier.urihttp://hdl.handle.net/10400.9/2846
dc.language.isoengpor
dc.subjectConcentrated solar beampor
dc.subjectNitridepor
dc.subjectSynthesis por
dc.subjectTantalumpor
dc.subjectAmmonia (NH3)por
dc.titleLow-temperature nitriding of VA-group metal powders (V,Nb,Ta) in flowing NH3 gas under heating with concentrated solar beam at PSApor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlacePorto, Portugalpor
oaire.citation.titleMateriais 2015: VII International Materials Symposium/XVII Conference of Sociedade Portuguesa dos Materiaispor
person.familyNameFernandes
person.familyNameOliveira
person.familyNameCañadas
person.familyNameSHOHOJI
person.givenNameJorge
person.givenNameFernando
person.givenNameInmaculada
person.givenNameNobumitsu
person.identifier647144
person.identifier.ciencia-id7B1F-EB22-9FF4
person.identifier.ciencia-id561B-597F-9D55
person.identifier.orcid0000-0002-1573-6067
person.identifier.orcid0000-0002-1503-0152
person.identifier.orcid0000-0001-8637-1547
person.identifier.orcid0000-0002-9499-7280
person.identifier.ridA-5241-2013
person.identifier.ridA-2312-2011
person.identifier.ridA-5751-2012
person.identifier.scopus-author-id6602405560
person.identifier.scopus-author-id23019925500
person.identifier.scopus-author-id24278417800
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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