Affiliation:
1. Tomsk Polytechnic University
2. Al-Farabi Kazakh National University
Abstract
This work researches the impact of the temperature of compacted copper nanopowder on the amperage of the current flowing through the nanopowder sample. It was determined that upon reaching its oxidation temperature (~ 1900C), the copper nanopowder started conducting electricity, and at 280-320°C electric breakdown of sample was occurring. This is caused to irreversible processes taking place in nanomaterials during heating, such as sintering and mass-transfer, those processes leading to the formation of conductivity channels. This speaks in favor of an evident dependency between copper nanopowder conductivity and the chemical transformations taking place in it; this allows for recommending this research method for instant diagnostics of copper nanopowders.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference31 articles.
1. Wendlandt, W.W., Themal Methods of Analysis, 2nd ed., John Wiley & Sons, NY, (1974).
2. Il'in A.P., Root L.O., and Mostovshchikov A.V., The Rise of Energy Accumulated in Metal Nanopowders, Techn. Phys. 57 (2012) 1178–1180.
3. Cox J.D., Wagman D.D., Medvedev V.A., CODATA Key Values for Thermodynamics. New York, USA, Hemisphere Publishing Corp., (1989).
4. Gubarev F.A., Fedorov V.F., Fedorov K.V., Shiyanov D.V., and Evtushenko G.S., Copper bromide vapour laser with an output pulse duration of up to 320 ns, Quantum Electron., Vol. 46, 1 (2016) 57–60.
5. Torgaev S.N., Gubarev F.A., Boichenko A.M., Evtushenko G.S., and Zhdaneev O.V., Reduction of copper bromide molecules in the plasma of a CuBr laser during the interpulse period, Russ. Phys. J., Vol. 54, 2 (2011) 221-225.
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