| 摘要 |
PROBLEM TO BE SOLVED: To provide a lanthanum chromite oxide having excellent sinterability, its regeneration method and a solid electrolyte fuel cell produced by using the lanthanum chromite oxide. SOLUTION: The objective lanthanum chromite oxide is expressed by the general formula, Law Cr1-x-y Mx Ny O3 (M is Mg and/or Al; N is Ni, Fe, Co, Zn, Al, Cu, Mu, V and/or Ti; 1.02<=w<=1.05; 0<x<=0.2; 0<y<=0.1). The fluctuation of the sinterability is eliminated on all production lots of a perovskite-type oxide to enable a dense sintering and improve the mechanical strength, chemical stability and electron conductivity. If the value (w) is unintentionally deviated from the above range, a solution of a La or Cr salt is added to the slurry of the powder of the detective lot and the mixture is dried to compensate the deficient component, improve the sinterability and regenerate the defective lot to an acceptable lot. |
