The SrO-Nb2O5 quasibinary system is assessed using the Calculation of Phase Diagram (CAL PHAD) technique. A set of self-consistent parameters is obtained and the calculated phase diagram is consistent with the experim...The SrO-Nb2O5 quasibinary system is assessed using the Calculation of Phase Diagram (CAL PHAD) technique. A set of self-consistent parameters is obtained and the calculated phase diagram is consistent with the experimental data. It is suggested that further tentative investigation is required especially in the SrO-riched region展开更多
A new niabate Sr6Ti7Nb9O42 was synthesized for the first time by solid state reaction in SrO-TiO2-Nb2O5 ternary system. The new compound was characterized by EPMA, XRD, SEM and DTA. The X-ray powder diffraction data o...A new niabate Sr6Ti7Nb9O42 was synthesized for the first time by solid state reaction in SrO-TiO2-Nb2O5 ternary system. The new compound was characterized by EPMA, XRD, SEM and DTA. The X-ray powder diffraction data of Sr6Ti7Nb9O42 were firstly reported in the paper. Sr6Ti7Nb9O42 crystallizes the hexagonal system with unit cell parameters a=8.9991(4) A,c= 11.5118(9)A. and space group P6/mcm (193), z=1. The calculated and measured densities are 4. 783 g/cm3 and 4. 764 g/cm3, respectively.展开更多
文摘The SrO-Nb2O5 quasibinary system is assessed using the Calculation of Phase Diagram (CAL PHAD) technique. A set of self-consistent parameters is obtained and the calculated phase diagram is consistent with the experimental data. It is suggested that further tentative investigation is required especially in the SrO-riched region
基金Funded by Grant-in-Aid Project (No. 95-04) of International Centre for Diffraction Data.
文摘A new niabate Sr6Ti7Nb9O42 was synthesized for the first time by solid state reaction in SrO-TiO2-Nb2O5 ternary system. The new compound was characterized by EPMA, XRD, SEM and DTA. The X-ray powder diffraction data of Sr6Ti7Nb9O42 were firstly reported in the paper. Sr6Ti7Nb9O42 crystallizes the hexagonal system with unit cell parameters a=8.9991(4) A,c= 11.5118(9)A. and space group P6/mcm (193), z=1. The calculated and measured densities are 4. 783 g/cm3 and 4. 764 g/cm3, respectively.
