CH246801A - Elektrischer Widerstand und Verfahren zu seiner Herstellung. - Google Patents

Elektrischer Widerstand und Verfahren zu seiner Herstellung.

Info

Publication number
CH246801A
CH246801A CH246801DA CH246801A CH 246801 A CH246801 A CH 246801A CH 246801D A CH246801D A CH 246801DA CH 246801 A CH246801 A CH 246801A
Authority
CH
Switzerland
Prior art keywords
oxides
sintering
composition
spinel
excess
Prior art date
Application number
Other languages
German (de)
English (en)
Inventor
Gloeilampenfabrieken N Philips
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH246801A publication Critical patent/CH246801A/de

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
    • H01C7/042—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 inorganic non-metallic substances
    • H01C7/043—Oxides or oxidic compounds
    • H01C7/046—Iron oxides or ferrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/12—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on chromium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/42—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on chromites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/44—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminates
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
CH246801D 1943-05-07 1944-05-05 Elektrischer Widerstand und Verfahren zu seiner Herstellung. CH246801A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL111204 1943-05-07

Publications (1)

Publication Number Publication Date
CH246801A true CH246801A (de) 1947-01-31

Family

ID=32464660

Family Applications (1)

Application Number Title Priority Date Filing Date
CH246801D CH246801A (de) 1943-05-07 1944-05-05 Elektrischer Widerstand und Verfahren zu seiner Herstellung.

Country Status (6)

Country Link
US (1) US2492543A (en, 2012)
CH (1) CH246801A (en, 2012)
DE (1) DE880459C (en, 2012)
FR (1) FR904136A (en, 2012)
GB (1) GB631739A (en, 2012)
NL (1) NL65136C (en, 2012)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775527A (en) * 1951-12-18 1956-12-25 Kaiser Aluminium Chem Corp Refractory material
US2851639A (en) * 1952-03-27 1958-09-09 Mosaic Tile Company Electrically-conductive ceramic floortile units and floors composed of such conductive units
US2844112A (en) * 1953-01-02 1958-07-22 Nat Cylinder Gas Co Method of inhibiting slag formation in boilers and inhibitor materials for use therein
US3044867A (en) * 1957-05-15 1962-07-17 Messrs Aktiebolaget Svenska Me Method for the production of metallicceramic materials
US4086556A (en) 1975-09-18 1978-04-25 Matsushita Electric Industrial Co., Ltd. Humidity sensitive ceramic resistor
US5482907A (en) * 1994-05-26 1996-01-09 National Science Council Ceramic composite containing a spinel phase and an oxide phase and the preparation thereof
CN110092651B (zh) * 2019-05-17 2021-09-10 中钢洛耐科技股份有限公司 一种铝铬合成原料的制备方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2048263A (en) * 1931-08-22 1936-07-21 Haglund Ture Robert Highly refractory mass produced by melting
US2370443A (en) * 1936-12-28 1945-02-27 Biefeld Karl Nonmetallic electric resistance material and process for producing same
FR885401A (fr) * 1941-08-22 1943-09-14 Philips Nv Résistance électrique

Also Published As

Publication number Publication date
FR904136A (fr) 1945-10-26
US2492543A (en) 1949-12-27
GB631739A (en) 1949-11-09
DE880459C (de) 1953-06-22
NL65136C (en, 2012)

Similar Documents

Publication Publication Date Title
DE975802C (de) Ferromagnetischer Kern fuer hohe Frequenzen
DE2333189C2 (de) Hochtemperatur-Heißleiter
CH246801A (de) Elektrischer Widerstand und Verfahren zu seiner Herstellung.
DE659388C (de) Verfahren zur Herstellung von Massekernen
CH288263A (de) Keramischer, ferromagnetischer körper mit einer hohen Sättigungsinduktion und Verfahren zu dessen Herstellung.
DE1089317B (de) Verfahren zum Herstellen von Mangan-Zink-Ferritkoerpern
DE810999C (de) Gesinterter elektrischer Widerstand
DE815062C (de) Gesinterter elektrischer Widerstand
DE975738C (de) Elektrischer Widerstand mit negativem Temperaturkoeffizienten
DE642032C (de) Verfahren zur Verbesserung der magnetischen Eigenschaften
CH248324A (de) Elektrischer Widerstand.
DE758292C (de) Verfahren zur Herstellung eines Widerstandskoerpers mit negativem Temperaturbeiwert des Widerstandes
DE2312431C3 (de) Verwendung einer Legierung als Werkstoff für Kerne von Magnetköpfen
DE671185C (de) Elektrischer Widerstand
DE1758642C3 (de) Verwendung einer Nickellegierung als Werkstoff für elektrische Widerstandsdrähte
DE1671166B1 (de) Piezoelektrisches keramik-material
AT144828B (de) Verfahren zur Herstellung pulverförmiger Ausgangsstoffe für gesinterte Hartmetall-Legierungen.
AT202786B (de) Verfahren zum Herstellen eines Magnetkernes mit einer annähernd rechteckförmigen Hystereseschleife
AT211561B (de) Ferromagnetischer Werkstoff und Verfahren zu seiner Herstellung
DE1255557B (de) Verwendung eines weichmagnetischen Ferritmaterials als keramisches Element fuer einen piezomagnetischen UEbertrager und Verfahren zu dessen Herstellung
AT212280B (de) Verfahren zur Herstellung von polykristallinem Aluminiumoxyd
DE1051714B (de) Verfahren zur Herstellung ferromagnetischer Massen
AT150568B (de) Mit Anschlußkontakten versehener elektrischer Widerstand mit negativem Temperaturkoeffizienten und Verfahren zu dessen Herstellung.
DE975985C (de) Verfahren zur Herstellung eines elektrischen Widerstandes mit negativem Temperaturkoeffizienten
DE966714C (de) Verfahren zur Erhoehung der Permeabilitaet im Bereich kleiner Feldstaerken bei Eisen und Eisen-Silizium-Verbindungen