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Carbide phases synthesised from C/Mo powder compacts at specified sub-stoichiometric ratios by solar radiation heating to temperatures between 1600 C and 2500 C

2009Journal article Open access
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dc.contributor.authorGranier, Bernard
dc.contributor.authorShohoji, Nobumitsu
dc.contributor.authorAlmeida Costa Oliveira, Fernando
dc.contributor.authorMagalhães, Teresa
dc.contributor.authorFernandes, Jorge Cruz
dc.contributor.authorRosa, Luís Guerra
dc.date.accessioned2010-11-30T12:00:02Z
dc.date.available2010-11-30T12:00:02Z
dc.date.issued2009
dc.description.abstractThere are a number of distinguishable carbide phases in the binary Mo-C system depending on C/Mo ratio as well as on temperature. In a preceding work published in this journal, carbide formation performance for graphite/molybdenum powder mixtures at specified levels of substoichiometric C/Mo atom ratio (C/Mo = 1/1, 3/4, 2/3 and 1/2) by exposure to concentrated solar radiation in a solar furnace at PROMESCNRS in Odeillo (France) was reported at a target temperature 1900 C. In the present work, the similar carbide synthesis experiments were carried out at 1600 C as well as at temperature exceeding 2500 C. The target temperature setting was adjusted by controlling the downward deviation of the test piece top surface position from the exact focal spot of the parabolic mirror concentrator located above. In this solar furnace at PROMES-CNRS, temperature of the test piece was raised from ambient temperature to the target temperature within fractions of a second. Reaction products detected were hexagonal -MoC1 x and -Mo2C (high temperature sub-carbide phase) depending on the C/Mo ratio in the starting material as well as on the processing temperature. No evidence of formation of cubic -MoC1 x was detected by X-ray diffraction analysis for any test piece examined.por
dc.identifier.citationGranier, B.; Shohoji, N.; Oliveira, F. A. C.; Magalhães, T.; Fernandes, J. C.; Rosa, L. G. Carbide phases synthesised from C/Mo powder compacts at specified sub-stoichiometric ratios by solar radiation heating to temperatures between 1600 C and 2500 C. In: Materials Transactions vol. 50, nº 12 , 2009, p. 2813-2819por
dc.identifier.urihttp://hdl.handle.net/10400.9/1072
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectMolybdenum carbidespor
dc.subjectNon-stoichiometrypor
dc.subjectSolar furnacepor
dc.subjectUltra-fast heatingpor
dc.subjectUniaxial flexure strengthpor
dc.titleCarbide phases synthesised from C/Mo powder compacts at specified sub-stoichiometric ratios by solar radiation heating to temperatures between 1600 C and 2500 Cpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2819por
oaire.citation.startPage2813por
oaire.citation.titleMaterials Transactionspor
person.familyNameSHOHOJI
person.familyNameOliveira
person.familyNameFernandes
person.givenNameNobumitsu
person.givenNameFernando
person.givenNameJorge
person.identifier647144
person.identifier.ciencia-id561B-597F-9D55
person.identifier.ciencia-id7B1F-EB22-9FF4
person.identifier.orcid0000-0002-9499-7280
person.identifier.orcid0000-0002-1503-0152
person.identifier.orcid0000-0002-1573-6067
person.identifier.ridA-5751-2012
person.identifier.ridA-2312-2011
person.identifier.ridA-5241-2013
person.identifier.scopus-author-id23019925500
person.identifier.scopus-author-id6602405560
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublicationbd4f5c60-466f-4d7b-abd1-e3ffa5f4aa69
relation.isAuthorOfPublication.latestForDiscoverya3396e58-3598-42de-97a9-9b11f7c2e9d9

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