The deoxidation,desulfuration,deoxysulfuration constants and the standard Gibbs energies(inJ mol<sup>-1</sup>)of formation of the following rare earth compounds as the equilibrium phases in Ni-base solutio...The deoxidation,desulfuration,deoxysulfuration constants and the standard Gibbs energies(inJ mol<sup>-1</sup>)of formation of the following rare earth compounds as the equilibrium phases in Ni-base solutionsare given:Ce<sub>2</sub>O<sub>3</sub>:lgK=-（6.0729×10<sup>4</sup>/T）+16.50 △G<sup>0</sup>=-1.162460×10<sup>6</sup>+315.84TCe<sub>2</sub>O<sub>2</sub>S:lgK=-（5.1450×10<sup>4</sup>/T）+12.46 △G<sup>0</sup>=-9.84850×10<sup>5</sup>+238.50TCe<sub>2</sub>S<sub>3</sub>:lgK=-（7.2232×10<sup>4</sup>/T）+27.98 △G<sup>0</sup>=-1.382600×10<sup>6</sup>+535.55TY<sub>2</sub>O<sub>3</sub>:lgK=-（4.2572×10<sup>4</sup>/T）+7.74 △G<sup>0</sup>=-8.14920×10<sup>5</sup>+148.16TY<sub>2</sub>O<sub>2</sub>S:lgK=-（3.3146×10<sup>4</sup>/T）+3.85 △G<sup>0</sup>=-6.34460×10<sup>5</sup>+73.72TY<sub>2</sub>S<sub>3</sub>:lgK=-（1.22487×10<sup>5</sup>/T）+55.78 △G<sup>0</sup>=-2.344630×10<sup>0</sup>+1067.76TInteraction coefficients between Ce.Y and O are also given:e<sub>o</sub><sup>?</sup>=-（3.33451×10<sup>5</sup>/T）+149.7 e<sub>O</sub><sup>?</sup>=-（1.63437×10<sup>5</sup>/T）+71.8The phase equilibria for Ni-Ce-S-O and Ni-Y-S-O solutions at 1600℃ provide the basis for pre-dicting the sequence and type of Ce and Y equilibrium phases formed in Ni-base solutions.The formulascontrolling the morphology of inclusion formed in liquid Ni by Ce or Y addition are also given.展开更多
基金This subject is supported by the National Natural Science Foundation of China
文摘The deoxidation,desulfuration,deoxysulfuration constants and the standard Gibbs energies(inJ mol<sup>-1</sup>)of formation of the following rare earth compounds as the equilibrium phases in Ni-base solutionsare given:Ce<sub>2</sub>O<sub>3</sub>:lgK=-（6.0729×10<sup>4</sup>/T）+16.50 △G<sup>0</sup>=-1.162460×10<sup>6</sup>+315.84TCe<sub>2</sub>O<sub>2</sub>S:lgK=-（5.1450×10<sup>4</sup>/T）+12.46 △G<sup>0</sup>=-9.84850×10<sup>5</sup>+238.50TCe<sub>2</sub>S<sub>3</sub>:lgK=-（7.2232×10<sup>4</sup>/T）+27.98 △G<sup>0</sup>=-1.382600×10<sup>6</sup>+535.55TY<sub>2</sub>O<sub>3</sub>:lgK=-（4.2572×10<sup>4</sup>/T）+7.74 △G<sup>0</sup>=-8.14920×10<sup>5</sup>+148.16TY<sub>2</sub>O<sub>2</sub>S:lgK=-（3.3146×10<sup>4</sup>/T）+3.85 △G<sup>0</sup>=-6.34460×10<sup>5</sup>+73.72TY<sub>2</sub>S<sub>3</sub>:lgK=-（1.22487×10<sup>5</sup>/T）+55.78 △G<sup>0</sup>=-2.344630×10<sup>0</sup>+1067.76TInteraction coefficients between Ce.Y and O are also given:e<sub>o</sub><sup>?</sup>=-（3.33451×10<sup>5</sup>/T）+149.7 e<sub>O</sub><sup>?</sup>=-（1.63437×10<sup>5</sup>/T）+71.8The phase equilibria for Ni-Ce-S-O and Ni-Y-S-O solutions at 1600℃ provide the basis for pre-dicting the sequence and type of Ce and Y equilibrium phases formed in Ni-base solutions.The formulascontrolling the morphology of inclusion formed in liquid Ni by Ce or Y addition are also given.
