JPS56112638A - Gas component detecting element - Google Patents

Gas component detecting element

Info

Publication number
JPS56112638A
JPS56112638A JP1698080A JP1698080A JPS56112638A JP S56112638 A JPS56112638 A JP S56112638A JP 1698080 A JP1698080 A JP 1698080A JP 1698080 A JP1698080 A JP 1698080A JP S56112638 A JPS56112638 A JP S56112638A
Authority
JP
Japan
Prior art keywords
tio2
particles
pair
sintered body
temperature
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
JP1698080A
Other languages
Japanese (ja)
Inventor
Yoshihiro Segawa
Naoto Miwa
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP1698080A priority Critical patent/JPS56112638A/en
Publication of JPS56112638A publication Critical patent/JPS56112638A/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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

PURPOSE:To enhance the durability of the element by using Pt-Rh as a catalyst borne by the sintered body of a metalic oxide such as TiO2 and further by applying Pt-Rh alloy to an electrode so as to compensate the reduction of Rh in the catalyst. CONSTITUTION:The metalic oxide such as, for instance, TiO2 of rutile type baked temporarily at the temperature of 1,200 deg.C is crushed so as for diameters of particles to be arranged in the range of 0.1-2mu, later the particles thus prepared are granulated by adding polyvinyl alcohol thereto, and thereby the diameters of the particles are arranged to be 63-150mu. In this powder of TiO2 are inserted a pair of electrodes 2 formed of the Pt-Rh alloy wherein Rh accounts for 2-20% in the weight ratio, which is subjected to compression molding under the condition and baked for 1-2hr under the temperature of 1,100-1,500 deg.C, whereby the sintered body 1 is obtained. After the sintered body 1 is dipped in a solution in 1l prepared by melting platinum chloride of 100g and rhodium trichloride of 11g in water, it is dried and further baked for 1-2hr under the temperature of 800-1,000 deg.C. The electrodes 2 in a pair are connected to lead wires 14 through the intermediary of a pair of heat-resisting metal wires 5 and metal connectors 13.
JP1698080A 1980-02-13 1980-02-13 Gas component detecting element Pending JPS56112638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1698080A JPS56112638A (en) 1980-02-13 1980-02-13 Gas component detecting element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1698080A JPS56112638A (en) 1980-02-13 1980-02-13 Gas component detecting element

Publications (1)

Publication Number Publication Date
JPS56112638A true JPS56112638A (en) 1981-09-05

Family

ID=11931197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1698080A Pending JPS56112638A (en) 1980-02-13 1980-02-13 Gas component detecting element

Country Status (1)

Country Link
JP (1) JPS56112638A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574264A (en) * 1982-11-17 1986-03-04 Kabushiki Kaisha Toyota Chuo Kenkyusho Thin film oxygen sensor with microheater
US4688014A (en) * 1983-04-11 1987-08-18 New Cosmos Electric Co., Ltd. Semiconductor type gas sensor having two terminals
US5182136A (en) * 1989-09-12 1993-01-26 Nippondenso Co., Ltd. Gas component detecting element and detector
US5457333A (en) * 1990-11-30 1995-10-10 New Cosmos Electric Co., Ltd. Gas sensor used in leak detectors or alarm units

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574264A (en) * 1982-11-17 1986-03-04 Kabushiki Kaisha Toyota Chuo Kenkyusho Thin film oxygen sensor with microheater
US4688014A (en) * 1983-04-11 1987-08-18 New Cosmos Electric Co., Ltd. Semiconductor type gas sensor having two terminals
US5182136A (en) * 1989-09-12 1993-01-26 Nippondenso Co., Ltd. Gas component detecting element and detector
US5296836A (en) * 1989-09-12 1994-03-22 Nippondenso Co., Ltd. Gas component detecting element and detector
DE4028717C2 (en) * 1989-09-12 2000-09-21 Denso Corp Gas component sensing element and sensing device
US5457333A (en) * 1990-11-30 1995-10-10 New Cosmos Electric Co., Ltd. Gas sensor used in leak detectors or alarm units

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