JPS5754855A - Oxygen concentration detector - Google Patents

Oxygen concentration detector

Info

Publication number
JPS5754855A
JPS5754855A JP55130928A JP13092880A JPS5754855A JP S5754855 A JPS5754855 A JP S5754855A JP 55130928 A JP55130928 A JP 55130928A JP 13092880 A JP13092880 A JP 13092880A JP S5754855 A JPS5754855 A JP S5754855A
Authority
JP
Japan
Prior art keywords
solid electrolyte
region
blocking end
coating
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP55130928A
Other languages
Japanese (ja)
Inventor
Nobuo Hiroi
Kunio Yamakawa
Hideyuki Okinaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55130928A priority Critical patent/JPS5754855A/en
Publication of JPS5754855A publication Critical patent/JPS5754855A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
    • G01N27/4077—Means for protecting the electrolyte or the electrodes

Abstract

PURPOSE:To improve durability, by making the blocking end heavier than the opening side of a solid electrolyte as the thickness of a heat-resistant metallic oxide to be formed on an electrode on the exhaust gas side, and also by providing it with a prescribed porous structure at the same time. CONSTITUTION:Porous Pt electrode layers 2a and 2b are provided by thermal decomposition process on the inside and outside circumferential surfaces of an oxygen ion conductive solid electrolyte 1 composed of a stable zirconia sintered body to which 5-10mol% of Y2O3 is added. Onto the electrode layer 2a, which is on the exhaust gas side, of the Pt electrode layers, MgO-Al2O3 spinel powder is applied by plasma flame coating process to form a coating 3. The coating 3 is to be of such a structure that thickness becomes gradually heavier toward the blocking end from the opening side of the solid electrolyte 1, porosity of Region A is appropriate (0.5- 1%) so that very little gas passes in the region A stretching from the center to the foot section of the solid electrolyte 1, and porosity of Region B stretching from the center to the blocking end is approximately 5% with a number of fine pores allowing the gas to pass through.
JP55130928A 1980-09-19 1980-09-19 Oxygen concentration detector Pending JPS5754855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55130928A JPS5754855A (en) 1980-09-19 1980-09-19 Oxygen concentration detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55130928A JPS5754855A (en) 1980-09-19 1980-09-19 Oxygen concentration detector

Publications (1)

Publication Number Publication Date
JPS5754855A true JPS5754855A (en) 1982-04-01

Family

ID=15045992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55130928A Pending JPS5754855A (en) 1980-09-19 1980-09-19 Oxygen concentration detector

Country Status (1)

Country Link
JP (1) JPS5754855A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01153953A (en) * 1987-12-11 1989-06-16 Ngk Spark Plug Co Ltd Element for oxygen sensor
JPH04303753A (en) * 1991-03-29 1992-10-27 Ngk Insulators Ltd Electrochemical element
JP2010151575A (en) * 2008-12-25 2010-07-08 Denso Corp Gas sensor element and gas sensor incorporating the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5497490A (en) * 1978-01-18 1979-08-01 Nippon Denso Co Ltd Oxygen density detector
JPS54116290A (en) * 1978-03-01 1979-09-10 Nippon Denso Co Ltd Oxygen concentration detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5497490A (en) * 1978-01-18 1979-08-01 Nippon Denso Co Ltd Oxygen density detector
JPS54116290A (en) * 1978-03-01 1979-09-10 Nippon Denso Co Ltd Oxygen concentration detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01153953A (en) * 1987-12-11 1989-06-16 Ngk Spark Plug Co Ltd Element for oxygen sensor
JPH04303753A (en) * 1991-03-29 1992-10-27 Ngk Insulators Ltd Electrochemical element
JP2010151575A (en) * 2008-12-25 2010-07-08 Denso Corp Gas sensor element and gas sensor incorporating the same

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