DE29924505U1 - Ceramic resistor, especially for a spark plug, comprises a pyrolyzed organic silicon polymer containing a percolative carbon network promoting filler for resistivity adjustment - Google Patents

Ceramic resistor, especially for a spark plug, comprises a pyrolyzed organic silicon polymer containing a percolative carbon network promoting filler for resistivity adjustment

Info

Publication number
DE29924505U1
DE29924505U1 DE29924505U DE29924505U DE29924505U1 DE 29924505 U1 DE29924505 U1 DE 29924505U1 DE 29924505 U DE29924505 U DE 29924505U DE 29924505 U DE29924505 U DE 29924505U DE 29924505 U1 DE29924505 U1 DE 29924505U1
Authority
DE
Germany
Prior art keywords
filler
percolative
electrical resistance
polymer containing
organic silicon
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.)
Expired - Lifetime
Application number
DE29924505U
Other languages
German (de)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE29924505U priority Critical patent/DE29924505U1/en
Priority claimed from DE1999110446 external-priority patent/DE19910446A1/en
Publication of DE29924505U1 publication Critical patent/DE29924505U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01C7/04—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 negative temperature coefficient
    • H01C7/049—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 negative temperature coefficient mainly consisting of organic or organo-metal substances

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Non-Adjustable Resistors (AREA)

Abstract

A ceramic resistor, comprising a pyrolyzed organic silicon polymer containing a percolative carbon network promoting filler for resistivity adjustment, is new.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (7)

1. Keramischer elektrischer Widerstand, der durch Pyrolyse (Keramisieren) mindestens eines siliciumorganischen Polymers, insbesondere eines Polysiloxans, und eines Füllstoffes hergestellt wird, dadurch gekennzeichnet, daß der spezifische elektrische Widerstand durch ein mit Hilfe des Füllstoffes erzeugtes perkolatives Kohlenstoff-Netzwerk eingestellt wird.1. Ceramic electrical resistance, which is produced by pyrolysis (ceramization) of at least one organosilicon polymer, in particular a polysiloxane, and a filler, characterized in that the specific electrical resistance is set by a percolative carbon network generated with the aid of the filler. 2. Keramischer elektrischer Widerstand nach Anspruch 1, dadurch gekennzeichnet, daß das perkolative Netzwerk durch die Anwesenheit der isolierenden Komponente Al2O3 als Füllstoff erzeugt wird.2. Ceramic electrical resistor according to claim 1, characterized in that the percolative network is generated by the presence of the insulating component Al 2 O 3 as a filler. 3. Keramischer elektrischer Widerstand nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Füllstoffanteil des Al2O3 so gewählt ist, daß der spezifische elektrische Widerstand eine geringe Temperaturabhängigkeit im Temperaturbereich von 0 und 1000 Grad Celsius aufweist.3. Ceramic electrical resistor according to one of the preceding claims, characterized in that the filler content of Al 2 O 3 is selected so that the specific electrical resistance has a low temperature dependence in the temperature range of 0 and 1000 degrees Celsius. 4. Keramischer elektrischer Widerstand nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Füllstoffanteil des Al2O3 von 10 bis 60 Vol-%, bezogen auf die Polymer-Füllstoff-Mischung reicht.4. Ceramic electrical resistance according to one of the preceding claims, characterized in that the filler content of the Al 2 O 3 ranges from 10 to 60 vol%, based on the polymer-filler mixture. 5. Keramischer elektrischer Widerstand nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Füllstoffanteil des Al2O3 40 Vol-%, bezogen auf die Polymer- Füllstoff-Mischung beträgt. 5. Ceramic electrical resistance according to one of the preceding claims, characterized in that the filler fraction of the Al 2 O 3 40 vol%, based on the polymer-filler mixture. 6. Keramischer elektrischer Widerstand nach Anspruch 1, dadurch gekennzeichnet, daß das perkolative Netzwerk durch die Anwesenheit einer einzelnen isolierenden Komponente oder einer Mischung aus wenigstens zwei der isolierenden Komponenten Al2O3, ZrO2, TiO2, Fe2O3 erzeugt wird.6. Ceramic electrical resistor according to claim 1, characterized in that the percolative network is generated by the presence of a single insulating component or a mixture of at least two of the insulating components Al 2 O 3 , ZrO 2 , TiO 2 , Fe 2 O 3 . 7. Keramischer elektrischer Widerstand nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zur Einstellung des spezifischen elektrischen Widerstands zusätzlich die spezifische Pulveroberfläche des Al2O3 variiert wird.7. Ceramic electrical resistor according to one of the preceding claims, characterized in that the specific powder surface of the Al 2 O 3 is additionally varied to adjust the specific electrical resistance.
DE29924505U 1999-03-10 1999-03-10 Ceramic resistor, especially for a spark plug, comprises a pyrolyzed organic silicon polymer containing a percolative carbon network promoting filler for resistivity adjustment Expired - Lifetime DE29924505U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29924505U DE29924505U1 (en) 1999-03-10 1999-03-10 Ceramic resistor, especially for a spark plug, comprises a pyrolyzed organic silicon polymer containing a percolative carbon network promoting filler for resistivity adjustment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999110446 DE19910446A1 (en) 1999-03-10 1999-03-10 Ceramic resistor, especially for a spark plug, comprises a pyrolyzed organic silicon polymer containing a percolative carbon network promoting filler for resistivity adjustment
DE29924505U DE29924505U1 (en) 1999-03-10 1999-03-10 Ceramic resistor, especially for a spark plug, comprises a pyrolyzed organic silicon polymer containing a percolative carbon network promoting filler for resistivity adjustment

Publications (1)

Publication Number Publication Date
DE29924505U1 true DE29924505U1 (en) 2003-08-21

Family

ID=27789909

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29924505U Expired - Lifetime DE29924505U1 (en) 1999-03-10 1999-03-10 Ceramic resistor, especially for a spark plug, comprises a pyrolyzed organic silicon polymer containing a percolative carbon network promoting filler for resistivity adjustment

Country Status (1)

Country Link
DE (1) DE29924505U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109824364A (en) * 2019-03-26 2019-05-31 华南理工大学 A kind of synthetic method of SiAlZrOC ceramics

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109824364A (en) * 2019-03-26 2019-05-31 华南理工大学 A kind of synthetic method of SiAlZrOC ceramics

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20030925

R150 Term of protection extended to 6 years

Effective date: 20040504

R151 Term of protection extended to 8 years

Effective date: 20050531

R158 Lapse of ip right after 8 years

Effective date: 20071002