Microstructural and electrical investigation of Cu-Ni-Cr alloys obtained by powder metallurgy method

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dc.contributor.authorCarrio J.A.G.
dc.contributor.authorCarvalhal M.A.
dc.contributor.authorAyabe L.M.
dc.contributor.authorDa Silva L.C.E.
dc.contributor.authorSilva Jr. R.V.
dc.contributor.authorMonteiro W.A.
dc.date.accessioned2024-03-13T01:32:34Z
dc.date.available2024-03-13T01:32:34Z
dc.date.issued2010
dc.description.abstractThe aim of this work, using the powder metallurgy process, is to synthesize metallic alloys with high mechanical strength and high electric conductivity, after melting optimizing and thermal treatments. The Cu-Ni-Cr (wt%) alloys are characterized in their mechanical and electrical properties as well as the obtained microstructure. Through the process of powder metallurgy, contacts and structural parts can be obtained. The alloys elements are added to copper with the intention to improve their strength, ductility and thermal stability, without causing considerable damages in their form, electrical and thermal conductivity, and corrosion resistance. The metallic powders were mixed for a suitable time and then they were pressed in a cold uniaxial pressing (1000 kPa). Afterwards, the specimens were sintered in temperatures varying from 700 up to 800°C under vacuum. At last, the samples were homogenized at 550°C under vacuum, for special times. The comparative analysis is based on the sintered density, densification parameter, hardness, macrostructures and microstructures of the samples. The alloys were characterized by optical microscopy, x rays powder diffraction, electrical conductivity and Vickers hardness. © (2010) Trans Tech Publications.
dc.description.firstpage35
dc.description.lastpage40
dc.description.volume660-661
dc.identifier.doi10.4028/www.scientific.net/MSF.660-661.35
dc.identifier.issn1662-9752
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37242
dc.relation.ispartofMaterials Science Forum
dc.rightsAcesso Aberto
dc.subject.otherlanguageCopper-nickel-chromium alloys
dc.subject.otherlanguageElectrical properties
dc.subject.otherlanguageMechanical properties
dc.subject.otherlanguageMicrostructure
dc.subject.otherlanguagePowder metallurgy
dc.subject.otherlanguageStructural characterization
dc.titleMicrostructural and electrical investigation of Cu-Ni-Cr alloys obtained by powder metallurgy method
dc.typeArtigo de evento
local.scopus.citations1
local.scopus.eid2-s2.0-78649910323
local.scopus.subjectCold uniaxial pressings
local.scopus.subjectCopper nickel chromium alloys
local.scopus.subjectDensification parameters
local.scopus.subjectElectrical conductivity
local.scopus.subjectHigh mechanical strength
local.scopus.subjectMechanical and electrical properties
local.scopus.subjectPowder metallurgy process
local.scopus.subjectStructural characterization
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78649910323&origin=inward
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