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Open AccessArticle

Properties of Cu-xFe3O4 Nanocomposites for Electrical Application

1
Faculty of Materials Science and Engineering, University POLITEHNICA of Bucharest, RO-060042 Bucharest, Romania
2
Department of Electrical and Computer Engineering, University of California Davis, Davis, CA 95616, USA
3
Faculty of Materials Science and Engineering, “Gheorghe Asachi” Technical University of Iasi, RO-700050 Iasi, Romania
*
Authors to whom correspondence should be addressed.
Materials 2020, 13(14), 3086; https://doi.org/10.3390/ma13143086
Received: 14 June 2020 / Revised: 8 July 2020 / Accepted: 8 July 2020 / Published: 10 July 2020
(This article belongs to the Special Issue Advanced Surface Treatment Technologies for Metallic Alloys)
Copper matrix nanocomposites reinforced with magnetite nanoparticles were developed using powder metallurgy. Various processing parameters were taken into consideration, such as magnetite content, compaction pressure, sintering time and temperature. The nanopowder blends were compacted using various uniaxial pressures and sintered at 650 and 800 °C in order to study the influence of processing parameters on morphology, structure, thermal, magnetic and mechanical properties. The structure and morphology of the nanocomposites analyzed by X-ray diffraction (XRD), bright field transmission electron microscopy (TEMBF) and scanning electron microscopy (SEM) showed that sintered composites retained the nanoscale characteristics of the initial Fe3O4 and Cu nanopowders. These nanocomposites have good cold-rolling deformability and Vickers micro-hardness. The Cu-xFe3O4 nanocomposites have thermal and magnetic properties that make them suitable for electronical applications. View Full-Text
Keywords: nanosize powders; copper; magnetite; powder metallurgy; sintering; thermal properties; magnetic properties; cold-rolling; Vickers micro hardness nanosize powders; copper; magnetite; powder metallurgy; sintering; thermal properties; magnetic properties; cold-rolling; Vickers micro hardness
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MDPI and ACS Style

Predescu, A.M.; Vidu, R.; Vizureanu, P.; Predescu, A.; Matei, E.; Predescu, C. Properties of Cu-xFe3O4 Nanocomposites for Electrical Application. Materials 2020, 13, 3086.

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