MU-GAP SHIN¹, DONG-WHA PARK^1,*

Abstract

Copper nanopowders were prepared from bulk material using a transferred arc plasma system. N2 diluting gas flow rate was introduced as an experimental parameter. It was observed that as the flow rate of the diluting gas was increased, the oxidation level of the copper nanopowders was greatly reduced and the particle size was also decreased. Also, copper nanopowders were prepared using a non-transferred arc plasma system. The morphology and the particle size were changed by the flow rate of the N2 added plasma gas, as it was confirmed by the results of the scanning electron microscopy (SEM), particle size analyzer (PSA), X-ray diffractometer (XRD), transmission electron microscopy (TEM), elemental analyzer (EA), and thermogravimetric analyzer (TGA). The experimental results of the two types of the plasma systems showed the remarkable differences. The evaporation rate of the bulk copper by the transferred arc plasma system was much higher than that of the non-transferred arc plasma system. The mean particle size of the particles prepared by the transferred arc was 98 nm while that of the particles prepared by the non-transferred arc was about 202 nm confirmed by PSA..

Keywords

Transferred arc plasma, Non-transferred arc plasma, Copper, Nanopowders.

Submitted at: June 21, 2009
Accepted at: Feb. 27, 2010

Citation

MU-GAP SHIN, DONG-WHA PARK, Synthesis of copper nanopowders by transferred arc and non-transferred arc plasma systems, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 3, pp. 528-534 (2010)

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