Low temperature effect in electrical properties of sintered copper-nickel-aluminum alloys
Tipo
Artigo de evento
Data de publicação
2015
Periódico
Materials Science Forum
Citações (Scopus)
4
Autores
Monteiro W.A.
Carrio J.A.G.
da Silveira C.R.
Carvalhal M.
Masson T.J.
Carrio J.A.G.
da Silveira C.R.
Carvalhal M.
Masson T.J.
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© (2015) Trans Tech Publications, Switzerland.The major effort of sintered metallic alloys (compression, homogenization and sintering of metallic powder) is the observation of the evolution of electrical conductivity, mechanical properties (microhardness tests) and microstructures changes after appropriate thermomechanical treatments with the use of copper-nickel-aluminum alloys as electric material. In this case, thepurpose was to verify the possible changes in these materials when subjected at low temperatures. Samples of Cux%Niy%Alz% initially compressed, sintered and homogenized were characterized by optical metallography (microstructure) and mechanical strength (hardness Vickers) at room temperature. Data of x-ray diffraction of polycrystalline samples were collected with a conventional Difractometer. After this was made measurements of electrical properties (electrical conductivity) at low temperatures of samples obtained from precursors of high purity in powder form, for the study of the influence of powder metallurgy processes in physical properties of metallic alloys in this condition.
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Assuntos Scopus
Copper nickels , Electrical conductivity , Low temperatures , Microhardness tests , Optical metallography , Polycrystalline samples , Powder metallurgy process , Structural characterization