Ceramics-Silikáty 26, (2) 165 - 168 (1982) |
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DETERMINATION OF THE MIXING ENTHALPY OF SOLID SOLUTIONS IN THE SYSTEM Y₂O₃-Nd₂O₃
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Tichonov Pjotr Alekseyevich 1, Proks Ivo 2, Kosa Ladislav 2
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1 Institute of the Chemistry of Silicates, Academy of Sciences of the USSR, nab. Makarova 2,
199 164 Leningrad B-164
2 Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 5, 809 34 Bratislava
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Experimentally established heats of solution of Y₂O₃, Nd₂O₃ and of three solid solutions in the system Y₂O₃-Nd₂O₃ in nitric acid (vol. ratio HNO₃ : H₂O = 1 : 1) at 298 K were used for determining the enthalpy of mixing for the formation of solid solutions in this system. All the specimens, the heats of solutions of which were measured, had a body-centered cubic lattice. The non-zero values of the enthalpy of mixing have shown, that the solid solutions in the system Y₂O₃-Nd₂O₃ are non-ideal. |
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