Effect of Nb doping on the chemical stability of BSCF-based solid solutions

作者：Wang Fang^*; Nakamura Takashi; Yashiro Keiji; Mizusaki Junichiro; Arnezawa Koji

来源：Solid State Ionics, 2014, 262: 719-723.

DOI：10.1016/j.ssi.2014.01.045

• BSCF
• Chemical stability
• Nb-doping
• CO2 tolerance

The effects of Nb doping on the chemical stability of Ba0.5Sr0.5Co0.8Fe0.2O3 - delta based solid solutions under high oxygen partial pressure (p(O-2)) and CO2-containing atmospheres were studied. BSCF and Ba0.5Sr0.5Co0.9Nb0.1O3 - delta (BSCN) and Ba0.5Sr0.5Co0.8Fe0.1Nb0.1O3 (- delta) (BSCFN) were prepared and investigated by using TG-DTA analysis under p(O-2) = 1 and 10(-3) bar with or without CO2. The results showed that the Nb substitution effectively improved the chemical stability under high oxidation condition and also improved the CO2-tolerance of BSCF-based materials.