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Consolidation of Carbon Nanofiber/Copper Composites by Hot-Pressing and Spark Plasma Sintering: A Comparative Study

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Vapour grown carbon nanofibers have been incorporated into a copper matrix at 20 and 40 volume fractions. The manufacturing route involves the dispersion of the carbon nanofibers and their subsequent coating by electroless plating with copper. The consolidation of the composite powders was performed by two different techniques: hot-pressing and spark plasma sintering. A comparative study of the two processes is reported, in terms of microstructure, dispersion and porosity. The consolidation by hot-pressing (at 900 °C, 30 MPa) led to poreless composites (relative density > 96%) and to a homogeneous microstructure. On the other hand, spark plasma sintering (at 400 °C, 75 MPa) led to lower densification (relative density < 96%) and heterogeneous microstructure.
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Keywords: ELECTROLESS PLATING; HOT-PRESSING; METAL-MATRIX COMPOSITES; NANOSCALE DISPERSION; SPARK PLASMA SINTERING; VAPOUR GROWN CARBON NANOFIBERS

Document Type: Research Article

Publication date: 2009-03-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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