| 摘要 |
PURPOSE:To facilitate the control of the coefft. of linear expansion and to improve resistance to high temp. and to a high-vacuum reducing atmosphere and performance as a catalyst for decomposition of gas by mixing and firing specified compds. CONSTITUTION:Compds. such as La oxide, Sr carbonate, Co oxide and Mn oxide are mixed in a desired ratio, this mixture is calcined to form perovskite structure and pulverization is carried out. The resulting powder is pressed and fired to produce a perovskite type compd. oxide for an electrode represented by the formula (where A is a rare earth element such as La, Ce or Nb, A' is an alkaline earth metal such as Ca, Sr or Ba, B is a transition metal such as Al or Ni, 0<x<=0.5, 0<y<=0.3, 0.8<=z<=1.0 and 0.5<=a<=1.0). |
