The total conductivity,oxygen sorption property,oxygen permeability and stability of pure perovskite-type oxide BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) in real operating conditions were investigated. Its total conductivity was...The total conductivity,oxygen sorption property,oxygen permeability and stability of pure perovskite-type oxide BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) in real operating conditions were investigated. Its total conductivity was measured to be 3.6 S·cm-1 at 600°C. Though the total conductivity of the BCFNO membrane is much smaller than that of the Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCFO) membrane,the oxygen permeability of the BCFNO membrane is similar to that of the BSCFO membrane. SEM observation and EDX analysis of the BCFN...展开更多
The melting problem in a semi-infinite region with constant heat flux boundary condition is solved by a semi-exact method and an integral approximate method .Effect of subcooling on the transient solid-liquid interfac...The melting problem in a semi-infinite region with constant heat flux boundary condition is solved by a semi-exact method and an integral approximate method .Effect of subcooling on the transient solid-liquid interface location and surface temperature are also discussed in this paper.展开更多
基金the National High-Tech Research and Development Program of China (No. 2006AA11A189)the Science and Technology Commission of Shanghai Municipality (No. 07DZ12036)+1 种基金the National Engineering Research Center of Advanced Steel Technology (NERCAST, No. 050209)the Education Commission of Shanghai Municipality.
文摘The total conductivity,oxygen sorption property,oxygen permeability and stability of pure perovskite-type oxide BaCo0.7Fe0.2Nb0.1O3-δ (BCFNO) in real operating conditions were investigated. Its total conductivity was measured to be 3.6 S·cm-1 at 600°C. Though the total conductivity of the BCFNO membrane is much smaller than that of the Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCFO) membrane,the oxygen permeability of the BCFNO membrane is similar to that of the BSCFO membrane. SEM observation and EDX analysis of the BCFN...
文摘The melting problem in a semi-infinite region with constant heat flux boundary condition is solved by a semi-exact method and an integral approximate method .Effect of subcooling on the transient solid-liquid interface location and surface temperature are also discussed in this paper.
