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Apatite-lanthanum silicate has attracted considerable interest in recent years due to its high oxide ion conductivity.In this paper,V-doped samples La10-xVx(SiO4) 6O3+x(0≤x≤1.5) were prepared by sol-gel method and the influences of V-dopant content on calcining temperature and conductivity were reported.The samples were characterized by thermal analysis(TG-DSC) ,X-ray diffraction(XRD) and scanning electron micrograph(SEM) . The apatite was obtained at 800°C,a relatively low temperature in comparison to 1500°C with the conventional solid-state method.The ceramic pellets sintered at 1200°C for 5 h showed a higher relative density than La9.33Si6O26 pellets sintered at 1400°C for 20 h.The conductivities of samples were measured by electrochemical impedance spectroscopy.The conductivity was improved with the increase of V-dopant content on La site.
Apatite-lanthanum silicate has been attracted by interest in recent years due to its high oxide ion conductivity. In this paper, V-doped samples La10-xVx (SiO4) 6O3 + x (0≤x≤1.5) were prepared by sol- gel method and the influences of V-dopant content on calcining temperature and conductivity were reported were expressed by thermal analysis (TG-DSC), X-ray diffraction (XRD) and scanning electron micrograph (SEM). The apatite was obtained at 800 ° C, a relatively low temperature in comparison to 1500 ° C with the conventional solid-state method. The ceramic pellets sintered at 1200 ° C for 5 h showed a higher relative density than La9.33Si6O26 pellets sintered at 1400 ° C for 20 h . The conductivities of samples were measured by electrochemical impedance spectroscopy. The conductivity was improved with the increase of V-dopant content on La site.