Characteristics of nanopowders produced by wire electrical explosion of tinned copper conductor in argon

• Published in: Materials letters Vol. 62; no. 17; pp. 3143 - 3145
• Main Authors: Kwon, Y.S., Ilyin, A.P., Tikhonov, D.V., Yablunovsky, G.V., An, V.V.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 30.06.2008
• Subjects: Nanoparticles; Surface layers; Wire electrical explosion; Nanoparticles; Wire electrical explosion; Surface layers
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2008.02.006

The end products of electrical explosion of copper wires coated with a thin tin layer were studied. Depositing tin (~ 1 wt.%) on the surface of the copper wire did not have a considerable effect on the relation between the sample dispersity and the input energy. When increasing the input energy, the tin content in surface and near-surface layers of the nanoparticles reduces sharply within 1.1–1.3 W/ W s. Decreasing the input energy increases the oxidation onset temperature by ~ 20 °C when heating Cu (Sn) nanopowders unlike the copper nanopowders without additives. The main phase in the powders is crystallized copper.