초록 ▼

A ceramic layer system including at least two layers having respective ion conductivities which are substantially different includes a substrate layer composed of a ceramic material and having substantially no ion conductivity; and at least one conducting layer positioned adjacent to the substrate l

A ceramic layer system including at least two layers having respective ion conductivities which are substantially different includes a substrate layer composed of a ceramic material and having substantially no ion conductivity; and at least one conducting layer positioned adjacent to the substrate layer, containing coated ceramic particles composed of ceramic particles composed of a ceramic material having no substantial ion conductivity which are coated with a material having a substantial ion conductivity so that each conducting layer of the at least one conducting layer has a continuous phase after sintering composed of the material which has a substantial ion conductivity and so that the at least one conducting layer has an ion conductivity effective to conduct ions. A method of producing a gas sensor for detecting small quantities of at least one gas in gas mixtures includes providing a substrate layer composed of ceramic particles composed of a material having substantially no ion conductivity; applying a layer composed of coated ceramic particles onto the substrate layer, the coated ceramic particles being composed of ceramic particles composed of a material that has no substantial ion conductivity coated with a material which has a substantial ion conductivity at the operating temperature of the gas sensor; applying at least one functional layer onto the layer composed of coated ceramic particles to provide a green body; preheating the green body to remove binding agents, plastifying agents, and any additional organic constituents; and sintering the green body after preheating by heating to a temperature effective to sinter the green body so that the layer comprised of coated ceramic particles has a continuous phase comprised of the material which has a substantial ion conductivity.

대표청구항 ▼

[ What is claimed is:] [1.] A ceramic layer system including at least two layers having respective ion conductivities which are substantially different, the ceramic layer system comprising:a substrate layer which is comprised of a ceramic material and which has substantially no ion conductivity; and

[ What is claimed is:] [1.] A ceramic layer system including at least two layers having respective ion conductivities which are substantially different, the ceramic layer system comprising:a substrate layer which is comprised of a ceramic material and which has substantially no ion conductivity; andat least one conducting layer which is positioned adjacent to the substrate layer, which contains coated ceramic particles comprised of ceramic particles comprising a ceramic material and having no substantial ion conductivity which are coated with a material which has a substantial ion conductivity so that each conducting layer of the at least one conducting layer has a continuous phase after sintering comprised of the material which has a substantial ion conductivity and so that the at least one conducting layer has an ion conductivity effective to conduct ions.