The preparation of disk shaped Mo/β'-sialon functionally gradient material(FGM) is studied.Random fractal of diffusion interface in Mo/β'-sialon FGM is also studied by variation method.
A geometric model for calculating the viscosity of multi-component melt fromrelated binary physicochemistry properties was derived based on Chou's thermodynamic geometricmodel. The model derived was employed to pr...A geometric model for calculating the viscosity of multi-component melt fromrelated binary physicochemistry properties was derived based on Chou's thermodynamic geometricmodel. The model derived was employed to predict the viscosity of Au-Ag-Cu alloys. The results showthat the calculated viscosity for Au-Ag-Cu alloys meet the experimental data very well. In addition,the viscosity of Bi-Sn-In systems was also predicted with this model.展开更多
Based on thermodynamic analysis,O'-Sialon-SiC-ZrO2 composites have been prepared by carbonthermal reduction-nitriation from natural kaolin and zircon with certain additives,The modulus of racture of well sintere...Based on thermodynamic analysis,O'-Sialon-SiC-ZrO2 composites have been prepared by carbonthermal reduction-nitriation from natural kaolin and zircon with certain additives,The modulus of racture of well sintered specimen may reach 110 MPa,The process of reaction-sintering has been discussed,The formation temperature of O'-Sialon is 1718 K by calcuation.展开更多
The weaknesses of submerged nozzles being used now were analyzed and ZrO2-CaO-BN composite was proposed to develop to overcome them.The feasibility to prepare ZrO2-CaO-BN compostie was made by thermodynamic method and...The weaknesses of submerged nozzles being used now were analyzed and ZrO2-CaO-BN composite was proposed to develop to overcome them.The feasibility to prepare ZrO2-CaO-BN compostie was made by thermodynamic method and the omposite was prepared in hot-press.The phase components of the composite were identified by X-ray diffraction method(XRD) and the microstructure of the composite was observed with SEM. Th results were consistent with thermodynamic calculation.展开更多
Two types of disposable EMF hydrogen sensors for measurements ofsolute contents of liquid metals in situ in metal-refining processesand their general principles are introduced. The way to design newelectrochemical sen...Two types of disposable EMF hydrogen sensors for measurements ofsolute contents of liquid metals in situ in metal-refining processesand their general principles are introduced. The way to design newelectrochemical sensors and the direction to develop new protonicconductors as new electrochemical sensors are discussed. Thefeasibility of protonic conductors worked as hydrogen pump innon-ferrous metal refining processes is discussed as well.展开更多
Based on introducing the quasi-parabolid rule,which indicates the relation of Gibbs free energy of formation of compounds and its compostitions,the Gibbs free energes of formation of Sialons (O'-and X-phases) were...Based on introducing the quasi-parabolid rule,which indicates the relation of Gibbs free energy of formation of compounds and its compostitions,the Gibbs free energes of formation of Sialons (O'-and X-phases) were estimated.展开更多
Based on its thermodynamic analysis ,β-Sialon-Alon metastable composite ceramic has been prepared by hot pressing sintering,XRD results indicate that the product of hot pressing singering is indeed Sialon-Alon metast...Based on its thermodynamic analysis ,β-Sialon-Alon metastable composite ceramic has been prepared by hot pressing sintering,XRD results indicate that the product of hot pressing singering is indeed Sialon-Alon metastable omposite ceramic ,which is in accordance with thermodynamic展开更多
文摘The preparation of disk shaped Mo/β'-sialon functionally gradient material(FGM) is studied.Random fractal of diffusion interface in Mo/β'-sialon FGM is also studied by variation method.
基金This work is financially supported by the National Natural Science Foundation of China (Nos. 59674028 and 20101006).
文摘A geometric model for calculating the viscosity of multi-component melt fromrelated binary physicochemistry properties was derived based on Chou's thermodynamic geometricmodel. The model derived was employed to predict the viscosity of Au-Ag-Cu alloys. The results showthat the calculated viscosity for Au-Ag-Cu alloys meet the experimental data very well. In addition,the viscosity of Bi-Sn-In systems was also predicted with this model.
文摘Based on thermodynamic analysis,O'-Sialon-SiC-ZrO2 composites have been prepared by carbonthermal reduction-nitriation from natural kaolin and zircon with certain additives,The modulus of racture of well sintered specimen may reach 110 MPa,The process of reaction-sintering has been discussed,The formation temperature of O'-Sialon is 1718 K by calcuation.
文摘The weaknesses of submerged nozzles being used now were analyzed and ZrO2-CaO-BN composite was proposed to develop to overcome them.The feasibility to prepare ZrO2-CaO-BN compostie was made by thermodynamic method and the omposite was prepared in hot-press.The phase components of the composite were identified by X-ray diffraction method(XRD) and the microstructure of the composite was observed with SEM. Th results were consistent with thermodynamic calculation.
基金This project is financially Supported by the National Natural Science Foundation of China (No. 20101006)Postdoctoral Foundation of China, and Shanghai Postdoctoral Foundation
文摘Two types of disposable EMF hydrogen sensors for measurements ofsolute contents of liquid metals in situ in metal-refining processesand their general principles are introduced. The way to design newelectrochemical sensors and the direction to develop new protonicconductors as new electrochemical sensors are discussed. Thefeasibility of protonic conductors worked as hydrogen pump innon-ferrous metal refining processes is discussed as well.
文摘Based on introducing the quasi-parabolid rule,which indicates the relation of Gibbs free energy of formation of compounds and its compostitions,the Gibbs free energes of formation of Sialons (O'-and X-phases) were estimated.
文摘Based on its thermodynamic analysis ,β-Sialon-Alon metastable composite ceramic has been prepared by hot pressing sintering,XRD results indicate that the product of hot pressing singering is indeed Sialon-Alon metastable omposite ceramic ,which is in accordance with thermodynamic