Mechanical and structural characterization of Cu-Ni-Ag/Y2O3 composites obtained by powder metallurgy

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dc.contributor.authorOkazaki A.K.
dc.contributor.authorMartins M.V.S.
dc.contributor.authorCarvalhal M.A.
dc.contributor.authorMonteiro W.A.
dc.contributor.authorCarrio J.A.G.
dc.date.accessioned2024-03-13T01:08:56Z
dc.date.available2024-03-13T01:08:56Z
dc.date.issued2012
dc.description.abstractMetal-ceramic composites are recently being used as electrode materials in solid oxide fuel cell (SOFC), which have received much attention as alternative energy sources. In this work cermets of Cu-Ni-Ag/Y2O3 were synthesized with different quantities of Ni and Ag. Various samples were prepared from pure precursors by conventional powder metallurgy processing and sintered at 800oC. The characterization by differential scanning calorimetry (DSC) and thermal gravimetric analyze (TGA) indicate that the presence of Y2O3 could increase the corrosion resistance of the metallic copper alloys. The copper crystalline structure presents internal strengths and possibly crystallites with different cell parameters due to the effect of thermal and mechanical treatments in presence of Y2O3. The highest electrical conductivity and highest hardness were obtained for the composition with 5% Y2O3 and 5% nickel, which increases the hardness and could contribute to the higher conductivity through a precipitation mechanism. © (2012) Trans Tech Publications, Switzerland.
dc.description.firstpage314
dc.description.lastpage319
dc.description.volume727-728
dc.identifier.doi10.4028/www.scientific.net/MSF.727-728.314
dc.identifier.issn1662-9752
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36857
dc.relation.ispartofMaterials Science Forum
dc.rightsAcesso Restrito
dc.subject.otherlanguageComposites
dc.subject.otherlanguageElectrical and thermal properties
dc.subject.otherlanguageRietveld method
dc.subject.otherlanguageSynchrotron radiation
dc.titleMechanical and structural characterization of Cu-Ni-Ag/Y2O3 composites obtained by powder metallurgy
dc.typeArtigo de evento
local.scopus.citations2
local.scopus.eid2-s2.0-84869428536
local.scopus.subjectAlternative energy source
local.scopus.subjectCrystalline structure
local.scopus.subjectElectrical conductivity
local.scopus.subjectMechanical treatments
local.scopus.subjectMetal-ceramic composites
local.scopus.subjectPowder metallurgy processing
local.scopus.subjectPrecipitation mechanism
local.scopus.subjectStructural characterization
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84869428536&origin=inward
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