JPS642301A - Manufacture of material with positive temperature coefficient - Google Patents

Manufacture of material with positive temperature coefficient

Info

Publication number
JPS642301A
JPS642301A JP15717587A JP15717587A JPS642301A JP S642301 A JPS642301 A JP S642301A JP 15717587 A JP15717587 A JP 15717587A JP 15717587 A JP15717587 A JP 15717587A JP S642301 A JPS642301 A JP S642301A
Authority
JP
Japan
Prior art keywords
temperature coefficient
positive temperature
bapbo2
dense
composition
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
JP15717587A
Other languages
Japanese (ja)
Other versions
JPH012301A (en
Inventor
Yasuhiro Oya
Makoto Hori
Akio Nara
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 JP62-157175A priority Critical patent/JPH012301A/en
Priority claimed from JP62-157175A external-priority patent/JPH012301A/en
Publication of JPS642301A publication Critical patent/JPS642301A/en
Publication of JPH012301A publication Critical patent/JPH012301A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
    • H01C7/023—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances containing oxides or oxidic compounds, e.g. ferrites
    • H01C7/025—Perovskites, e.g. titanates

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Abstract

PURPOSE:To prepare a dense and durable material with a positive temperature coefficient without destroying the crystal structure by processing a BaPbo3 composition on a hot isostatic press under predetermined conditions. CONSTITUTION:A BaPbO2 composition having high Curie temperature around 700 deg.C and exhibiting positive temperature coefficient is processed on a hot isostatic press under the conditions of pressure beyond 10atm, temperature ranging 700-1000 deg.C and oxygen concentration beyond 1%. This produces a dense, strong and durable BaPbO2 sinter with a positive temperature coefficient, whose crystalline structure is not affected by reduction.
JP62-157175A 1987-06-24 Method for producing positive temperature characteristic materials Pending JPH012301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-157175A JPH012301A (en) 1987-06-24 Method for producing positive temperature characteristic materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-157175A JPH012301A (en) 1987-06-24 Method for producing positive temperature characteristic materials

Publications (2)

Publication Number Publication Date
JPS642301A true JPS642301A (en) 1989-01-06
JPH012301A JPH012301A (en) 1989-01-06

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7341679B2 (en) * 2003-06-24 2008-03-11 Tdk Corporation Organic positive temperature coefficient thermistor and manufacturing method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7341679B2 (en) * 2003-06-24 2008-03-11 Tdk Corporation Organic positive temperature coefficient thermistor and manufacturing method therefor

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