Repository logo
 
Publication

Heterogeneity along the Height in Disc Specimens of Graphite/Tungsten Powder Mixtures with Sub-Stoichiometric Carbon Atom Ratios Heated by Concentrated Solar Beam to 1600 C

2010Journal article Open access
Simple item page
dc.contributor.authorShohoji, Nobumitsu
dc.contributor.authorMagalhães, Teresa
dc.contributor.authorOliveira, Fernando Almeida Costa
dc.contributor.authorRosa, Luís Guerra
dc.contributor.authorFernandes, Jorge Cruz
dc.contributor.authorRodriguez, Jose
dc.contributor.authorCañadas, Inmaculada
dc.contributor.authorMartinez, Diego
dc.date.accessioned2010-11-30T11:18:44Z
dc.date.available2010-11-30T11:18:44Z
dc.date.issued2010
dc.description.abstractCompositional heterogeneity along the thickness of compacted disc specimens of graphite/tungsten powder mixtures with substoichiometric carbon atom ratios (0.35, 0.50 and 1.00) heated by concentrated solar beam to 1600 C was characterised by X-ray diffraction. Top surface of any examined test piece was consisted purely of mono-carbide WC while the bottom surface showed different constitution depending on the net initial C/W ratio of the test piece; almost pure metallicWfor the C/W ¼ 0:35 specimen, dominant metallicWassociated with small proportion ofW2C for the C/W ¼ 0:50 and dominantW2C with trivial proportion of WC for the C/W ¼ 1:0. In the intermediate zone between the top and the bottom layers, the constitution held virtually constant depending on the nominal C/W ratio of the starting material: co-existing metallicWandW2C for the C/W ¼ 0:35, pureW2C for the C/W ¼ 0:50 and predominant WC with traceW2C for the C/W ¼ 1:00. Unlike for the top surface of the C/W ¼ 0:35 test piece heated in a solar furnace to 1900 C reported earlier, no evidence of formation of nano-meter scale WC whisker was detected for the top surface in any sample heated to 1600 C in the present work.por
dc.identifier.citationShohoji, N.; Magalhães, T.; Oliveira, F. A. C.; Rosa, L. G.; Fernandes, J. C.; Rodriguez, J.; Canadas, I.; Martinez, D. Heterogeneity along the Height in Disc Specimens of Graphite/Tungsten Powder Mixtures with Sub-Stoichiometric Carbon Atom Ratios Heated by Concentrated Solar Beam to 1600 C. In: Materials Transactions, 2010, vol. 51, nº 2, p. 381-388por
dc.identifier.urihttp://hdl.handle.net/10400.9/1070
dc.language.isoengpor
dc.peerreviewedyespor
dc.subjectTungsten carbidespor
dc.subjectSolar furnacepor
dc.subjectX-ray diffractionpor
dc.subjectHeat treatmentpor
dc.subjectTemperature gradientpor
dc.titleHeterogeneity along the Height in Disc Specimens of Graphite/Tungsten Powder Mixtures with Sub-Stoichiometric Carbon Atom Ratios Heated by Concentrated Solar Beam to 1600 Cpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage388por
oaire.citation.startPage381por
oaire.citation.titleMaterials Transactionspor
person.familyNameSHOHOJI
person.familyNameOliveira
person.familyNameFernandes
person.familyNameRodriguez
person.familyNameCañadas
person.givenNameNobumitsu
person.givenNameFernando
person.givenNameJorge
person.givenNameJose
person.givenNameInmaculada
person.identifier647144
person.identifier.ciencia-id561B-597F-9D55
person.identifier.ciencia-id7B1F-EB22-9FF4
person.identifier.orcid0000-0002-9499-7280
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-5751-2012
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
relation.isAuthorOfPublicationa3396e58-3598-42de-97a9-9b11f7c2e9d9
relation.isAuthorOfPublication2c841cae-13ca-44f6-8cb1-b5ce93608bae
relation.isAuthorOfPublicationbd4f5c60-466f-4d7b-abd1-e3ffa5f4aa69
relation.isAuthorOfPublication1f96fc2c-f674-497f-932c-058f81227398
relation.isAuthorOfPublication4d53f9db-2cb5-440a-b695-cfb1ec4923cb
relation.isAuthorOfPublication.latestForDiscovery2c841cae-13ca-44f6-8cb1-b5ce93608bae

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
HETEROGENITY_93.pdf
Size:
3.55 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ME - Artigos em revistas internacionais