Empirical expression for the pressure-composition-temperature curve of the Zr2Fe-deuterium system

Satoshi Fukada; Masabumi Nishikawa

doi:10.1016/0925-8388(95)02126-4

Empirical expression for the pressure-composition-temperature curve of the Zr₂Fe-deuterium system

Satoshi Fukada, Masabumi Nishikawa

Engineering Science for Advanced energy system

Research output: Contribution to journal › Letter › peer-review

6 Citations (Scopus)

Abstract

Empirical equations for the pressure-composition-temperature (PCT) curve of the Zr₂Fe-D₂ system were developed using the relation of R_gT In(p_D2/p₀) = ΔH_s - T(ΔS_s + 2S̄_conf). The constant value of -101.8 kJ mol^-1 was given for ΔH_s regardless of the atomic ratio of D to Zr₂Fe, which is denoted as r. The ΔS_s + 2S̄_conf term was expressed by using the fourth-order polynomial of r. Although a past analytical equation could not be extrapolated to lower pressure, the present empirical equation fitted well a wide range of the PCT data. When Zr₂Fe underwent the disproportional reaction, PCT data could not be correlated by the empirical equations.

Original language	English
Journal	Journal of Alloys and Compounds
Volume	234
Issue number	2
DOIs	https://doi.org/10.1016/0925-8388(95)02126-4
Publication status	Published - Feb 15 1996

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/0925-8388(95)02126-4

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title = "Empirical expression for the pressure-composition-temperature curve of the Zr2Fe-deuterium system",

abstract = "Empirical equations for the pressure-composition-temperature (PCT) curve of the Zr2Fe-D2 system were developed using the relation of RgT In(pD2/p0) = ΔHs - T(ΔSs + 2{\=S}conf). The constant value of -101.8 kJ mol-1 was given for ΔHs regardless of the atomic ratio of D to Zr2Fe, which is denoted as r. The ΔSs + 2{\=S}conf term was expressed by using the fourth-order polynomial of r. Although a past analytical equation could not be extrapolated to lower pressure, the present empirical equation fitted well a wide range of the PCT data. When Zr2Fe underwent the disproportional reaction, PCT data could not be correlated by the empirical equations.",

author = "Satoshi Fukada and Masabumi Nishikawa",

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T1 - Empirical expression for the pressure-composition-temperature curve of the Zr2Fe-deuterium system

AU - Fukada, Satoshi

AU - Nishikawa, Masabumi

PY - 1996/2/15

Y1 - 1996/2/15

N2 - Empirical equations for the pressure-composition-temperature (PCT) curve of the Zr2Fe-D2 system were developed using the relation of RgT In(pD2/p0) = ΔHs - T(ΔSs + 2S̄conf). The constant value of -101.8 kJ mol-1 was given for ΔHs regardless of the atomic ratio of D to Zr2Fe, which is denoted as r. The ΔSs + 2S̄conf term was expressed by using the fourth-order polynomial of r. Although a past analytical equation could not be extrapolated to lower pressure, the present empirical equation fitted well a wide range of the PCT data. When Zr2Fe underwent the disproportional reaction, PCT data could not be correlated by the empirical equations.

AB - Empirical equations for the pressure-composition-temperature (PCT) curve of the Zr2Fe-D2 system were developed using the relation of RgT In(pD2/p0) = ΔHs - T(ΔSs + 2S̄conf). The constant value of -101.8 kJ mol-1 was given for ΔHs regardless of the atomic ratio of D to Zr2Fe, which is denoted as r. The ΔSs + 2S̄conf term was expressed by using the fourth-order polynomial of r. Although a past analytical equation could not be extrapolated to lower pressure, the present empirical equation fitted well a wide range of the PCT data. When Zr2Fe underwent the disproportional reaction, PCT data could not be correlated by the empirical equations.

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

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ER -

Empirical expression for the pressure-composition-temperature curve of the Zr₂Fe-deuterium system

Abstract

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