초록

An oxygen sensor element is manufactured by successively forming on the outside of the output lead wire, a solid pole, a first metal electrode layer, a solid electrolyte layer, and a second metal electrode layer from inside to outside.

대표청구항 ▼

Process for manufacturing an oxygen sensor element comprising the steps of: (a) forming a sinterable mass of an oxygen reference material around an output lead wire, the sinterable mass being of a material selected from the group consisting of a metal, or a mixture of a metal and its oxide, said sin

Process for manufacturing an oxygen sensor element comprising the steps of: (a) forming a sinterable mass of an oxygen reference material around an output lead wire, the sinterable mass being of a material selected from the group consisting of a metal, or a mixture of a metal and its oxide, said sinterable mass containing an anti-over sintering agent; (b) sintering said mass of reference material to form a porous sintered mass of oxygen partial pressure generating material in the form of a solid pole with the lead wire embedded in the material; (c) then coating a first metal layer onto the outside surface of the solid pole so that the first metal layer electrically contacts the lead wire; (d) then coating the entire external surface of the first metal layer coated solid pole with a solid electrolyte; and (e) then coating a second metal electrode layer on the outside surface of the solid electrolyte layer. An oxygen sensor element comprising: an output lead wire, a porous sintered mass of an oxygen partial pressure generating material in the form of a solid pole formed onto one end of said output lead wire, a first metal electrode layer formed on the outer surface of said solid pole so that the first metal electrode layer electrically contacts said output lead wire, a solid electrolyte layer formed wholly around the outer surface of said first metal electrode layer and solid pole, and a second electrode layer formed on the outer surface of said solid electrolyte layer and electrically insulated from said output lead wire.