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Production of carbon-coated aluminium nanopowders in pulsed microarc discharge

Production of carbon-coated aluminium nanopowders in pulsed microarc discharge,10.1088/0957-4484/13/5/320,Nanotechnology,Alexandre Ermoline,Mirko Scho

Production of carbon-coated aluminium nanopowders in pulsed microarc discharge   (Citations: 6)
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A new technique of metal nanopowder production and in situ coating using a microarc discharge is proposed. The feasibility of this method is demonstrated and preliminary results are presented. The microarc discharge was operated at 1 atm in both pure Ar and natural gas environments. Respectively, aluminium nanoparticles without and with ~1 nm thick carbon surface coating were obtained. The morphology and structures of the nanoparticles were studied using a transmission electron microscope (TEM), and size distribution of the coated particles was determined from the TEM image analyses. It was found that the sizes of the produced carbon-coated aluminium particles were well described by a lognormal distribution with the geometrical mean size of 22.7 nm and standard deviation of 1.35.
Journal: Nanotechnology - NANOTECHNOL , vol. 13, no. 5, pp. 638-643, 2002
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