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Synthesising carbo-nitrides of some d-group transition metals using a solar furnace at PSA

2013Journal article Open access
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dc.contributor.authorShohoji, Nobumitsu
dc.contributor.authorOliveira, Fernando Almeida Costa
dc.contributor.authorRosa, Luís Guerra
dc.contributor.authorFernandes, Jorge Cruz
dc.contributor.authorMagalhães, Teresa
dc.contributor.authorCoelho, Manuel Caldeira
dc.contributor.authorRodriguez, Jose
dc.contributor.authorCañadas, Inmaculada
dc.contributor.authorRamos, Carlos
dc.contributor.authorMartinez, Diego
dc.date.accessioned2014-02-12T14:26:40Z
dc.date.available2014-02-12T14:26:40Z
dc.date.issued2013
dc.description.abstractCarbo-nitride synthesis was undertaken using a solar furnace at PSA in flowing N2/Ar gas mixture under total pressure 1 atm and processing temperature T = 1600ºC for some d-group transition elements (Ti; Zr, V, Nb, Mo, W) starting from 1.5G/M (graphite/metal powder mixture with mole ratio 1.5:1) compact to ensure co-presence of free carbon with the reaction product. Clear X-ray diffraction (XRD) evidence of formation of carbo-nitride was detected for Ti (IVa group metal) showing higher N content in the carbo-nitride synthesised in N2 gas environment at partial pressure p(N2) = 1 atm than that at p(N2) = 0.5 atm. For M = V and Nb (Va group metals), formation of mono-carbide MC single-phase was detected in the N2 environment showing no evidence of formation of carbo-nitride in spite of presence of N2 in the environment. For M = Mo and W (VIa group metals), formation of higher carbide, among several options of carbide phases, appeared to be promoted in the N2 gas environment although, like in cases with the Va group metals, no evidence of dissolution of N into the reaction product was detected. As such, at T = 1600ºC in N2 gas environment up to p(N2) = 1 atm under concentrated solar beam, carbo-nitride formed from the 1.5G/M mixture only for IVa group metal (Ti) but not for Va and VIa group metals. Anyway, it seemed certain that N2 gas affected somehow the reaction path between G and M to yield the carbide phase for M = V, Nb, Mo and W.por
dc.identifier.citationShohoji, N.; Oliveira, F.A. Costa; Rosa, L. Guerra; Fernandes, J. Cruz; Magalhães, T.; Coelho, M. Caldeira; Rodríguez, J.; Canãdas, I.; Ramos, C.; Martínez, D. Synthesising carbo-nitrides of some d-group transition metals using a solar furnace at PSA. In: Materials Science Forum, 2013, Vol. 730-732, p. 153-158por
dc.identifier.issn1662-9752
dc.identifier.urihttp://hdl.handle.net/10400.9/2186
dc.language.isoengpor
dc.publisherTrans. Tech. Publicationspor
dc.relation.publisherversionhttp://dx.doi.org/10.4028/www.scientific.net/MSF.730-732.153por
dc.subjectSolar furnacepor
dc.subjectCarbo-nitridespor
dc.subjectNon-stoichiometrypor
dc.subjectSynthesispor
dc.titleSynthesising carbo-nitrides of some d-group transition metals using a solar furnace at PSApor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage158por
oaire.citation.startPage153por
oaire.citation.titleMaterials Science Forumpor
oaire.citation.volume730-732por
person.familyNameOliveira
person.familyNameFernandes
person.familyNameRodriguez
person.familyNameCañadas
person.givenNameFernando
person.givenNameJorge
person.givenNameJose
person.givenNameInmaculada
person.identifier647144
person.identifier.ciencia-id561B-597F-9D55
person.identifier.ciencia-id7B1F-EB22-9FF4
person.identifier.orcid0000-0002-1503-0152
person.identifier.orcid0000-0002-1573-6067
person.identifier.orcid0000-0001-7153-7743
person.identifier.orcid0000-0001-8637-1547
person.identifier.ridA-2312-2011
person.identifier.ridA-5241-2013
person.identifier.scopus-author-id23019925500
person.identifier.scopus-author-id6602405560
person.identifier.scopus-author-id35592804100
person.identifier.scopus-author-id24278417800
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublication.latestForDiscovery4d53f9db-2cb5-440a-b695-cfb1ec4923cb

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