| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas sensor element excellent in durability and used in a gas sensor for detecting a concentration of a specific gas component in a measurement object gas, in which a porous protection film covering the surface of the gas sensor element hardly causes separation. <P>SOLUTION: A sensor element body 3 is immersed in a heat-resistant particle slurry 400, and when pulling up the element body 3, in addition to vertically moving the element body 3 along its longitudinal axis direction, the element body is moved in a direction perpendicular to the longitudinal axis direction. Thus, the gas sensor element 5 having a contact angle θ of 80° or less between an upper end face 40 of the porous protection layer 4 and the surface of the sensor element 3 is formed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
