Abstract
The pressure dependence of the binary Sn–P phase diagram was investigated using an isopiestic equilibration method. Successful experiments were carried out at nine different pressures in the range from 0.006 to 0.69 bar, and the corresponding phase diagrams for these pressures were created up to a content of x P = 70 %. The change of the equilibrium temperatures of the formation reactions for the three binary compounds (Sn4P3, Sn3P4, SnP3) with increasing pressure was analyzed and extrapolated to 1 bar. The pressure-dependent maximum solubility of phosphorus in the tin-rich liquid was investigated and partial thermodynamic properties of P were derived for the liquid phase. Standard molar Gibbs energies of formation were derived for all three stable compounds.
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Acknowledgments
This study is a contribution to the European COST Action MP 0602. Financial support of the Austrian Science Foundation FWF (Fonds zur Förderung der wissenschaftlichen Forschung) under project no. P18968 is gratefully acknowledged. In addition, the authors would like to thank Dr. Rajesh Ganesan for a careful review of the manuscript.
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Ritscher, A., Schmetterer, C. & Ipser, H. Pressure dependence of the tin–phosphorus phase diagram. Monatsh Chem 143, 1593–1602 (2012). https://doi.org/10.1007/s00706-012-0861-y
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DOI: https://doi.org/10.1007/s00706-012-0861-y