Title:
PRODUCTION METHOD FOR GAS SENSOR ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/198787
Kind Code:
A1
Abstract:
A production method for a gas sensor element (10) that can detect the concentration of a specific ion on the basis of a limiting current that is the current that flows between a first electrode (13) and a second electrode (14) in accordance with the concentration difference of the specific ion. The production method comprises a temperature raising step (S102), current measurement steps (S103, S107, S109, S111), and adjustment steps (S106, S108, S110). In the temperature raising step, a heater (15) is energized, and the temperature of a solid electrolyte layer (12) is raised. In the current measurement steps, voltage is applied to the first electrode (13) and the second electrode (14), and the limiting current is measured. In the adjustment steps, an ultrashort pulse laser is used to remove a diffusion resistance layer, and a diffusion distance that is the length of an introduction passage is thereby adjusted such that the limiting current is within a final standard range.
Inventors:
KODAMA KAZUTOSHI (JP)
Application Number:
PCT/JP2019/015765
Publication Date:
October 17, 2019
Filing Date:
April 11, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01N27/41
Foreign References:
| JP2006030165A | 2006-02-02 | |||
| JP2007507697A | 2007-03-29 | |||
| JP2006010673A | 2006-01-12 | |||
| JP2015521108A | 2015-07-27 | |||
| JP2001153835A | 2001-06-08 | |||
| JPH07209246A | 1995-08-11 | |||
| JP2005249482A | 2005-09-15 |
Attorney, Agent or Firm:
HATTORI Masaki (JP)
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