| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a gas sensor element preventing the penetration of a slurry into a porous diffusion resistance layer to obtain stable sensor output. <P>SOLUTION: The gas sensor element 1 has: a solid electrolyte 2; an electrode 31 on the side of a gas to be measured; an electrode 32 on the side of a reference gas; and the porous diffusion resistance layer 4, and is constituted by providing a poisoning trap layer on the outer peripheral surface 41 of the porous diffusion resistance layer 4 and manufactured by: a sealing process for sealing a sealant in the fine through-hole of the porous diffusion resistance layer 4 from the outer peripheral surfaced 41 of the porous diffusion resistance layer 4 in forming the poisoning trap layer 5; a coating process for coating the outer peripheral surface 41 of the porous diffusion resistance layer 4 with the slurry for forming the poisoning trap layer 5; and a burning-off and fixing process for burning-off the sealant sealed in the fine through-hole and sintering the slurry to fix the poisoning trap layer 5 to the outer peripheral surface 41 of the porous diffusion resistance layer 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
