Probes for measuring oxygen concn. in exhaust gases - with sintered electrode layers of noble metal-solid electrolyte mixt.

摘要

Probes consisting of a stabilised ion-conducting solid electrolyte (A) with electrode layers sintered on both sides, >=1 of which is a single layer 10-500 um thick are made from a mixt. of noble metal powder (B), and (A) in powder form. Amt. of (A) in the mixt. is 5-75 wt.%. The probes can be used for measuring oxygen concn. of exhaust gases of vehicles. The electrode layer has good adhesion, with no loosening or peeling from the solid electrolyte body in service. It has excellent catalytic properties with long life, and can be made with high productivity and low cost.