Structural and electrical properties of copper-nickel-aluminum alloys obtained by conventional powder metallurgy method
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Artigo de evento
Date
2010
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Materials Science Forum
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5
Authors
Monteiro W.A.
Carrio J.A.G.
Da Silveira C.R.
Vitor E.
Buso S.J.
Carrio J.A.G.
Da Silveira C.R.
Vitor E.
Buso S.J.
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Abstract
This work looked for to search out systematically, in scale of laboratory, copper-nickel-aluminum alloys (Cu-Ni-Al) with conventional powder metallurgy processing, in view of the maintenance of the electric and mechanical properties with the intention of getting electric connectors of high performance or high mechanical damping. After cold uniaxial pressing (1000 kPa), sintering (780°C) and suitable homogenization treatments (500°C for different times) under vacuum (powder metallurgy), the obtained Cu-Ni-Al alloys were characterized by optical microscopy, electrical conductivity, Vickers hardness. X rays powder diffraction data were collected for the sintered samples in order to a structural and microstructural analysis. The comparative analysis is based on the sintered density, hardness, macrostructures and microstructures of the samples. © (2010) Trans Tech Publications.
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Keywords
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Cold uniaxial pressings , Copper nickels , Electrical conductivity , Homogenization treatment , Microstructural analysis , Powder metallurgy processing , Structural and electrical properties , Structural characterization