Title:
GAS SENSOR AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/182011
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a gas sensor capable of immobilizing the location of hot spot occurrences in a sensor element. To this end, a sensor element 12 is shaped such that the cross-sectional area thereof increases uniformly or stepwise from the positive (+) electrode side to the negative (-) electrode side so as to induce the hot spots, which would otherwise move to the negative electrode side, to a low-resistance side. As a result, positions substantially equal from a pair of electrodes 13, 15 formed at both end sections of the sensor element 12 are set to be hot spot occurrence positions, thereby avoiding damage to electrode sections due to hot spot heat.
Inventors:
TANAKA TETSURO (JP)
IGUCHI KENICHI (JP)
TAKAHASHI KEN (JP)
ITO CHIKA (JP)
IGUCHI KENICHI (JP)
TAKAHASHI KEN (JP)
ITO CHIKA (JP)
Application Number:
PCT/JP2019/011698
Publication Date:
September 26, 2019
Filing Date:
March 20, 2019
Export Citation:
Assignee:
KOA CORP (JP)
International Classes:
G01N27/12; G01N27/416
Foreign References:
| JP2000019143A | 2000-01-21 | |||
| JP2000055857A | 2000-02-25 | |||
| JPS52150696A | 1977-12-14 | |||
| JPH04115056U | 1992-10-12 | |||
| JP2007085816A | 2007-04-05 | |||
| JP4714867B2 | 2011-06-29 | |||
| JPH1073549A | 1998-03-17 | |||
| JP2000019143A | 2000-01-21 |
Other References:
OKAMOTO, T. ET AL.: "Characteristics of Oxygen Sensor Exploiting the Hot Spot in BaAl2O4- added GdBa2Cu3O7-delta Composite Ceramic Rod", JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2004, pages S567 - S571, XP055676622
Attorney, Agent or Firm:
MARUYAMA Yukio (JP)
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