MnS-Pr2S3 phase diagram |
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| Authors: | O. V. Andreev L. N. Monina |
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| Affiliation: | (1) Department of Inorganic Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel;(2) Department of Organic Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel;; |
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| Abstract: | The MnS-Pr2S3 phase diagram is of the eutectic type with incomplete solubility based on the starting sulfides (MnS and Pr2S3). The extent of the MnS-based solid solution at 1470 K is 1 mol % Pr2S3. γ-Pr2S3 at 1470 K dissolves 23 mol % MnS, α-Pr2S3 at 1170 K dissolves 6 mol % MnS. The eutectic composition (30 mol % Pr2S3 at 1550 K) coincides with the value calculated from the Schroeder equation for the liquidus branch descending from MnS. A value of 64 kJ/mol was calculated for the heat of melting of Pr2S3 using the Schroeder equation. |
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