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Chemical and morphological characterization of spherical Cu/Zn alloy microparticles produced by combustion synthesis

Published online by Cambridge University Press:  13 September 2012

Tae-Hyuk Lee ,
Hayk H. Nersisyan ,
Ha-Guk Jeong  and
Jong-Hyeon Lee
Tae-Hyuk Lee
Affiliation:
Graduate School of Department of Advanced Materials Engineering, Chungnam National University, Daejeon 305-764, Republic of Korea
Hayk H. Nersisyan
Affiliation:
Rapidly Solidified Materials Research Center, Chungnam National University, Daejeon 305-764, Republic of Korea
Ha-Guk Jeong
Affiliation:
Advanced Fusion Process R&D Group, KITECH, Incheon 406-130, Republic of Korea
Jong-Hyeon Lee*
Affiliation:
Graduate School of Department of Advanced Materials Engineering, Daejeon 305-764, Republic of Korea; and Graduate School of Green Energy Technology, Daejeon 305-764, Republic of Korea
*
a)Address all correspondence to this author. e-mail: jonglee@cnu.ac.kr
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Abstract

Copper–zinc alloy (Cu/Zn) powders with different Zn to Cu molar ratios were prepared by the combustion synthesis technique using a CuO + 0.15(C2H4)n + kZn (0.2 ≤ k ≤ 1.6 mol) reactive mixture. Depending on the Zn concentration, the combustion wave developed a temperature between 950 and 1040 °C and passed through the sample with a speed of 0.04–0.08 cm/s, resulting in almost single-stage temperature distributions. Cu/Zn alloy powders with Zn concentrations ranging from 0.5 to 45 wt% were obtained. It was shown that alloy particles become spherical and well dispersed with increasing Zn concentration. Inert dilution test with KCl salt was also performed to determine the influence of temperature degradation in the combustion wave on the morphology and composition of alloy powders.

Keywords

combustion synthesis (SHS)thermo gravimetric analysis (TGA)morphology
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 20 , 28 October 2012 , pp. 2601 - 2608
Copyright
Copyright © Materials Research Society 2012

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