Thermodynamic study of solid copper–nickel alloys by use of copper–beta-alumina

Oishi, Takao; Tagawa, Shinya; Tanegashima, Soichiro

doi:10.1016/j.jpcs.2004.08.038

Cited by 3 publications

(4 citation statements)

References 19 publications

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“…Three synthesis methods for copper(I) β" alumina (Cuβ"Al 2 O 3 ) were investigated in this work. The method of synthesis that minimized cracking and maximized density of the solid electrolyte was utilized to fabricate Cuβ"Al 2 O 3 for use in electrochemical cells to measure copperaluminium mixing thermodynamics [32,33,43,44,[46][47][48]…”

Section: Methodsmentioning

confidence: 99%

“…Copper(I) β" alumina (Cuβ"Al 2 O 3 ) of composition Cu 5 Mg 2 Al 31 O 51 was synthesized using 1) ion exchange from sodium β" alumina (Naβ"Al 2 O 3 ), following similar methods to Fray et al [42] , 2) direct sintering from the base oxides, or 3) from an oxide melt through the floating zone method of crystal growth [58] . 1) Ion exchange from Naβ"Al 2 O 3 [42] One method of synthesis of copper(I) β" alumina (Cuβ"Al 2 O 3 ) is through exchange of sodium with copper from sodium β" alumina (Naβ"Al 2 O 3 ) [42,43] . Using copper chloride as the exchange medium at both the working (WE) and counter (CE) electrode, the following reactions occur:…”

Section: Synthesis Of Copper(i) β" Aluminamentioning

confidence: 99%

“…Cuβ"Al 2 O 3 solid electrolyte has previously been synthesized but has thus far seen limited application. Currently, its only application is electrochemical potential measurements for liquid copper-nickel [43] and copper-tin [44] thermodynamic of mixing. Cuβ"Al 2 O 3 has also been suggested as a candidate material for tunable solid-state lasers [45] .…”

Section: Introductionmentioning

confidence: 99%

“…In this study, Cuβ"Al 2 O 3 is utilized as a solid electrolyte for high temperature thermodynamic measurements in the copper-aluminium system using the electrochemical potential difference (formerly known as EMF) method [32,33,43,44,[46][47][48] . The following isothermal electrochemical cell has been constructed:…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermodynamic and Structural Study of the Copper-Aluminum System by the Electrochemical Method Using a Copper-Selective Beta″ Alumina Membrane

Stinn

Allanore

2018

Metall Mater Trans B

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The liquid phase thermodynamic of mixing of the copper-aluminium binary system is investigated as a function of temperature and composition using the electrochemical potential difference method. A copper-selective beta" alumina (Cuβ"Al 2 O 3 ) is used as a solid electrolyte, synthesized through ion exchange, sintering from base oxide powders, and the floating zone method of crystal growth. Measured thermodynamic of mixing data were used to inform short range ordering in copper-aluminium melts through Darken's factor for excess stability and Bhatia-Thornton structure factors, revealing a strong departure from ideality and pronounced ordering. Mixing properties were used to predict viscosity and self-diffusion coefficients. Features observed in calculated electronic entropy of mixing for copper-aluminium were compared to trends in viscosity, demonstrating the utility of electronic property of mixing in the description of structure-properties in this liquid binary system.

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