| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a gas sensor element with less variation in responsiveness. <P>SOLUTION: A radius R of a solid electrolytic body 10 is measured at a radius measuring position A on a protective layer forming surface of the electrolytic body 10. A molten material for a protective layer is sprayed on the forming surface by using a plasma spraying device to form a protective layer 12. A radius S of the electrolytic body 10 including the protective layer 12 is measured at an intersection point B of a normal line in the measuring position A with the surface of the protective layer. With a difference between S and R regarded as the thickness of the protective layer 12, the amount of material sprayed by the spraying device for the protective layer is controlled based on the thickness, thereby forming the protective layer 12 equipped with a desired thickness. <P>COPYRIGHT: (C)2004,JPO |
