Based on the assessment and optimization of nine experimental sub-binary phase diagramsand thermodynamic data (RECl3-LiCl, RECl3-CaCl2 and CaCl2-LiCl), four phase diagrams of theRECl3-CaCl2-LiCl systems are calculated...Based on the assessment and optimization of nine experimental sub-binary phase diagramsand thermodynamic data (RECl3-LiCl, RECl3-CaCl2 and CaCl2-LiCl), four phase diagrams of theRECl3-CaCl2-LiCl systems are calculated and brieflly discussed.展开更多
PrCl_3-NaCl-LiCl phase diagram has been constructed from the phase diagrams of its sub-binary systems and of six quasi-binary systems measured by DTA technique.It is found that this ternary system is composed of five ...PrCl_3-NaCl-LiCl phase diagram has been constructed from the phase diagrams of its sub-binary systems and of six quasi-binary systems measured by DTA technique.It is found that this ternary system is composed of five liquidus surfaces,seven second crystallization lines,two peritectic points and one eutectie point.The temperatures and compositions of invariant points are as follows:P_1(416℃,30.3 mol% NaCl,44.2 mol% LiCl,25.5 mol% PrCl_3);P_2(409℃,25.0 mol% NaCl,50.0 mol% LiCl,25.0 mol% PrCl_3);E(404℃,20.0 mol% NaCl,55.4 mol% LiCl,24.6 mol% PrCl_3).展开更多
Three surfaces corresponding to the primary crystallization of PrCl_3,CaCl_2 and MgCl_2 respectively,3 univariant curves related to the secondary crystallization and a ternary eutectic(44.8 wt-% PrCl_3,31.8 wt-% CaCl_...Three surfaces corresponding to the primary crystallization of PrCl_3,CaCl_2 and MgCl_2 respectively,3 univariant curves related to the secondary crystallization and a ternary eutectic(44.8 wt-% PrCl_3,31.8 wt-% CaCl_2,546℃)were found in system PrCl_3-CaCl_2-MgCl_2 by means of DTA.A reaction occurs in this system: L=PrCl_3+CaCl_2+MgCl_2.展开更多
A computer prediction for the regularities of formation of binary bromide system was made. The results indicate that CsBr-CaBf2 molten salt system is binary complex compound-forming system. The phase diagram of CSBr-C...A computer prediction for the regularities of formation of binary bromide system was made. The results indicate that CsBr-CaBf2 molten salt system is binary complex compound-forming system. The phase diagram of CSBr-CaBt2 system has been determined by visual polythermal method in order to prove the prediction. The phase diagrams of the quasibinary system KCl-CsBr, KCl-CaBr2 and the quasiternary system CsBr-CaBr2-KCl were determined by using visual polythermal method. The phase diagrams of CsBr-CaBr2 and KCl-CaBr2 show that the intermediate compound is formed. The results are in agreement with the computer prediction. Here, the various parts of the phase diagram of the quasiternary system CsBr-CaBr2-KCl were discussed.展开更多
Nine sub-binary phase diagrams of the RECl<sub>3</sub>-CaCl<sub>2</sub>,RECl<sub>3</sub>-MgCl<sub>2</sub> and CaCl<sub>2</sub>-MgCl<sub>2</sub> s...Nine sub-binary phase diagrams of the RECl<sub>3</sub>-CaCl<sub>2</sub>,RECl<sub>3</sub>-MgCl<sub>2</sub> and CaCl<sub>2</sub>-MgCl<sub>2</sub> systems,andthermodynamic data for these systems are critically assessed and optimized.Using Hillert model and takingMgCl<sub>2</sub> as an asymmetric component,the ternary phase diagrams or the RECl<sub>3</sub>-CaCl<sub>2</sub>-MgCl<sub>2</sub> systems are predtcted.As well,the determination of asymmetric component in the asymmetric model is investigated.展开更多
The phase diagrams of molten salt systems KF-LiCI-BaCl_2 and LiCI-LiF-BaCl_2 have been determined by visual polythermal method.The relationship between the change of cation radius of monovalent fluoride and the areas ...The phase diagrams of molten salt systems KF-LiCI-BaCl_2 and LiCI-LiF-BaCl_2 have been determined by visual polythermal method.The relationship between the change of cation radius of monovalent fluoride and the areas of primary crystal region in the phase diagrams is discussed.展开更多
The mathematical formulas are given for calculating the partial molar thermodynamic proper- ties in a ternary system from its three corresponding binary systems based on the new ternary symmetric model presented by th...The mathematical formulas are given for calculating the partial molar thermodynamic proper- ties in a ternary system from its three corresponding binary systems based on the new ternary symmetric model presented by the authors in the foregoing paper.Applying this model to NaCl-BaCl_2-SrCl_2 system,the phase diagram of which as well as some isothermal sections have been calculated.The devations of temperature between the calculated and experimen- tal diagrams are less than five degrees.展开更多
文摘Based on the assessment and optimization of nine experimental sub-binary phase diagramsand thermodynamic data (RECl3-LiCl, RECl3-CaCl2 and CaCl2-LiCl), four phase diagrams of theRECl3-CaCl2-LiCl systems are calculated and brieflly discussed.
文摘PrCl_3-NaCl-LiCl phase diagram has been constructed from the phase diagrams of its sub-binary systems and of six quasi-binary systems measured by DTA technique.It is found that this ternary system is composed of five liquidus surfaces,seven second crystallization lines,two peritectic points and one eutectie point.The temperatures and compositions of invariant points are as follows:P_1(416℃,30.3 mol% NaCl,44.2 mol% LiCl,25.5 mol% PrCl_3);P_2(409℃,25.0 mol% NaCl,50.0 mol% LiCl,25.0 mol% PrCl_3);E(404℃,20.0 mol% NaCl,55.4 mol% LiCl,24.6 mol% PrCl_3).
文摘Three surfaces corresponding to the primary crystallization of PrCl_3,CaCl_2 and MgCl_2 respectively,3 univariant curves related to the secondary crystallization and a ternary eutectic(44.8 wt-% PrCl_3,31.8 wt-% CaCl_2,546℃)were found in system PrCl_3-CaCl_2-MgCl_2 by means of DTA.A reaction occurs in this system: L=PrCl_3+CaCl_2+MgCl_2.
文摘A computer prediction for the regularities of formation of binary bromide system was made. The results indicate that CsBr-CaBf2 molten salt system is binary complex compound-forming system. The phase diagram of CSBr-CaBt2 system has been determined by visual polythermal method in order to prove the prediction. The phase diagrams of the quasibinary system KCl-CsBr, KCl-CaBr2 and the quasiternary system CsBr-CaBr2-KCl were determined by using visual polythermal method. The phase diagrams of CsBr-CaBr2 and KCl-CaBr2 show that the intermediate compound is formed. The results are in agreement with the computer prediction. Here, the various parts of the phase diagram of the quasiternary system CsBr-CaBr2-KCl were discussed.
基金①Project Supported by the National Natural Science Foundation of China,manuserip received December 16,1992②Peking University
文摘Nine sub-binary phase diagrams of the RECl<sub>3</sub>-CaCl<sub>2</sub>,RECl<sub>3</sub>-MgCl<sub>2</sub> and CaCl<sub>2</sub>-MgCl<sub>2</sub> systems,andthermodynamic data for these systems are critically assessed and optimized.Using Hillert model and takingMgCl<sub>2</sub> as an asymmetric component,the ternary phase diagrams or the RECl<sub>3</sub>-CaCl<sub>2</sub>-MgCl<sub>2</sub> systems are predtcted.As well,the determination of asymmetric component in the asymmetric model is investigated.
文摘The phase diagrams of molten salt systems KF-LiCI-BaCl_2 and LiCI-LiF-BaCl_2 have been determined by visual polythermal method.The relationship between the change of cation radius of monovalent fluoride and the areas of primary crystal region in the phase diagrams is discussed.
文摘The mathematical formulas are given for calculating the partial molar thermodynamic proper- ties in a ternary system from its three corresponding binary systems based on the new ternary symmetric model presented by the authors in the foregoing paper.Applying this model to NaCl-BaCl_2-SrCl_2 system,the phase diagram of which as well as some isothermal sections have been calculated.The devations of temperature between the calculated and experimen- tal diagrams are less than five degrees.
