| 摘要 |
PURPOSE:To reduce power consumption and to stabilize the temp. of an element by efficiently and uniformly heating the element, by connecting a substrate comprising an oxygen ion conductive solid electrolyte and an electric insulating substrate having a heater circuit printed thereon. CONSTITUTION:A Au-paste is applied to a solid electrolyte 1 formed by the press molding of a stabilized ZrO2 powder by a thick film printing and backed to form electric signal take-out parts 2, 2' and Pt-electrodes 3, 3' are subsequently formed by electron beam vapor deposition. A CO-containing combustible gas oxidizing catalyst layer is formed by thick film printing so as to perfectly cover one Pt-electrode 3 while a catalyst layer 5 oxidizing combustible gas other than CO-gas is formed by thick film printing so as to perfectly cover the other Pt-electrode 3'. Next, the surfaces, to which any printing is not applied, of the solid electrolyte substrate 1 and an electric insulating alumina substrate 6 having a heater circuit 8 formed thereto are mutually adhered by an inorg. adhesive to obtain a CO-gas detection element. |
