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Metals 2015, 5(1), 428-438; doi:10.3390/met5010428

Channel Structures Formed in Copper Ingots upon Melting and Evaporation by a High-Power Electron Beam

1
Khristianovich Institute of Applied and Theoretical Mechanics, Siberian Branch of the Russian Academy of Sciences, Institutskaya str., 4/1, Novosibirsk 630090, Russia
2
Department of Physics and Engineering, Buryat State University, Smolina str., 24a, Ulan-Ude 670000, Russia
3
Institute of Physical Materials, Siberian Branch of the Russian Academy of Sciences, Sakhyanovoy str., 6, Ulan-Ude 670047, Russia
4
Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, Lavrenteva str., 11, Novosibirsk 630090, Russia
5
Department of Physics, Novosibirsk State University, Pirogova str., 20, Novosibirsk 630090, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 5 November 2014 / Revised: 12 February 2015 / Accepted: 5 March 2015 / Published: 12 March 2015
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Abstract

A new phenomenon is described in this paper: the formation of macroscopic channel structures on the bottom of copper ingots which were used as the target for the synthesis of copper nanoparticles by high-power electron beam evaporation and condensation. In the synthesis experiment, the cylindrical copper ingot is melted and partially evaporated in a graphite crucible. The channel structures were originally observed after a series of nanoparticle synthesis experiments in varying conditions. In the present work, various process conditions are varied in order to recreate the structures and identify their mechanism of formation. Conditions in which the channel structures form and do not form are identified and interesting microstructures are observed near the channel structures. View Full-Text
Keywords: copper; electron beam; self-organization; channel structures; eutectic microstructure copper; electron beam; self-organization; channel structures; eutectic microstructure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bardakhanov, S.; Nomoev, A.; Schreiber, M.; Radnaev, A.; Salimov, R.; Zobov, K.; Zavjalov, A.; Khartaeva, E. Channel Structures Formed in Copper Ingots upon Melting and Evaporation by a High-Power Electron Beam. Metals 2015, 5, 428-438.

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