한국재료학회지 (Korean Journal of Materials Research)

  • 제12권4호
  • /
  • Pages.283-289
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  • 2002
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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기전력법을 이용한 용융 Zn-Cd 합금중 Zn의 활동도 측정

Activity Measurement of Zn in Liquid Zn-Cd Alloy Using EMF Method

  • 정성엽 (국민대학교 신소재공학부) ;
  • 정우광 (국민대학교 신소재공학부) ;
  • 박종진 (한양대학교 재료화학공학부)
  • Jeong, Seong-Yeop (Dept. of Advanced Materials Engineering, Kookmin University) ;
  • Jeong, U-Gwang (Dept. of Advanced Materials Engineering, Kookmin University) ;
  • Park, Jong-Jin (Division of Materials and Chemical Engineering, Hanyang University)
  • 발행 : 2002.04.01
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초록

The E.M.F of the galvanic cell with fused salt was measured to determine the activities of zinc at 700-820K over the entire composition range of liquid Zn-Cd alloys. The cell used was as follows: (-) W ｜ Zn(pure) $Zn^{2+}(KCI-LiCl)$ ｜ Zn(in Zn-Cd alloy) ｜ W (+) The activities of zinc in the alloys showed positive deviation from Raoult's law over the entire composition range. The activity of cadmium and some thermodynamic functions such as Gibbs free energy, enthalpy, entropy were derived from the results by the thermodynamic relationship. The comparison of the results and the literature data was made. The liquid Zn-Cd alloy is found to be close to the regular solution. The concentration fluctuations in long wavelength limit, $S_{cc}(o)$, in the liquid alloy was calculated from the results.

키워드

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피인용 문헌

  1. Temperature dependence of the bulk and surface properties of liquid Zn–Cd alloys vol.123, pp.5, 2017, https://doi.org/10.1007/s00339-017-0977-3