SENSOR DE CONCENTRACION DEL OXIGENO.

摘要

In order to obviate deterioration of solid electrolyte exhaust gas oxygen sensors due to poisoning of the electrodes by materials in the exhaust gas the electrodes 4 are coated by a metal oxide 5 having a perovskite crystal structure and having the formula A(B1-yB<1>Y)O3 wherein A represents one or more metal cations having ionic radii between 0.8 and 1.65 ANGSTROM , B represents cations of one or more platinum group metals, B<1> represents cations of one or more non-platinum metals having ionic radii between 0.4 and 1.4 ANGSTROM and y has a value of 0 to 0.99