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DE767426C - Ceramic insulating compound, especially capacitor dielectric - Google Patents

Ceramic insulating compound, especially capacitor dielectric

Info

Publication number
DE767426C
DE767426C DESCH124838D DESC124838D DE767426C DE 767426 C DE767426 C DE 767426C DE SCH124838 D DESCH124838 D DE SCH124838D DE SC124838 D DESC124838 D DE SC124838D DE 767426 C DE767426 C DE 767426C
Authority
DE
Germany
Prior art keywords
ceramic insulating
capacitor dielectric
insulating compound
especially capacitor
titanium dioxide
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
Application number
DESCH124838D
Other languages
German (de)
Inventor
Carl Dr Schusterius
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DESCH124838D priority Critical patent/DE767426C/en
Application granted granted Critical
Publication of DE767426C publication Critical patent/DE767426C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C04B35/46—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 titanium oxides or titanates
    • C04B35/462—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 titanium oxides or titanates based on titanates

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Insulating Materials (AREA)
  • Ceramic Capacitors (AREA)

Description

Keramische Isoliermasse, insbesondere Kondensatordielektrikum Zusatz zum Zusatzpatent 767 364 Die Erfindung betrifft keramische Isoliermassen, die insbesondere als Kondensatordielektrikum bestimmt sind (nach Patent 767 3I6 und 767 364), die vornehmlich aus L anthanoxyd und Titandioxyd bestehen bzw. bei einem Gehalt von höchstens 2o % Titanddoxyd außerdem Zinnoxyd enthalten.Ceramic insulating compound, especially capacitor dielectric additive to additional patent 767 364 The invention relates to ceramic insulating compounds, in particular are intended as a capacitor dielectric (according to patent 767 3I6 and 767 364), the consist primarily of anthanoxide and titanium dioxide or with a content of Contains a maximum of 20% titanium oxide in addition to tin oxide.

Nach einer Weiterbildung der Masse nach Patent 767 3I6 und 767 364 besteht dieser erfindungsgemäß aus einem Gehalt von Lanthanoxyd, Zinnoxyd und 2o bis 5o %o Titandioxyd. Bei der Entwicklulng derartiger keramischer Isoliermassen wurde gefunden, daß der kleine dielektrische Verlustfaktor von etwa I ₧ I o-4 praktisch temperaturunabhängig wird, wenn bei einer Lanthanoxyd-Titandioxyd-Zinndioxyd-Masse der Gehalt an Titandioxyd zwischen 2o und 5o%o liegt. Der dielektrische Verlustfaktor beträgt z. B. bei 2oo° C nur I,5 - Io-4. Dieser für höhere Temperaturen außerordentlich niedrige Wert erlaubt infolgedessen eine hohe Belastung eines solchen Kondensators mit Hochfrequenz, was besonders dann von Wichtigkeit ist. wenn der Kondensator durch die abstrahlende Wäirme benachbarter anderer Schaltelemente. z. B. Widerstände. schon auf einige hundert Grad vorgeheizt wird.According to a further development of the mass according to patent 767 3I6 and 767 364 this consists according to the invention of a content of lanthanum oxide, tin oxide and 2o up to 5o% o titanium dioxide. In the development of such ceramic insulating compounds it was found that the small dielectric loss factor of about I ₧ I o-4 is practically independent of temperature when using a lanthanum oxide-titanium dioxide-tin dioxide mass the titanium dioxide content is between 2o and 5o%. The dielectric loss factor is z. B. at 2oo ° C only 1.5 - Io-4. This is extraordinary for higher temperatures As a result, a low value allows a high loading of such a capacitor with high frequency, something special then matters. if the Capacitor through the radiating heat from other neighboring switching elements. z. B. Resistors. is preheated to a few hundred degrees.

Der äußerst geringfügige Anstieg des niedrigen Verlustfaktors erfolgt so langsam. daß auch hei hohen Arbeitstemperaturen und hohen hochfrequenten Spannungen ein elektrischer Durchschlag durch Selbsterhitzung nicht mehr eintreten kann.The extremely slight increase in the low dissipation factor occurs so slow. that even at high working temperatures and high high-frequency voltages an electrical breakdown due to self-heating can no longer occur.

Der Wert der Dielektrizitätskonstante liegt zwischen 35 und 4o. Der Tremperatturkoeffizient ist schwach negativ.The value of the dielectric constant is between 35 and 4o. Of the Temperature coefficient is slightly negative.

Als Beispiel wird eine Masse mit folgender Zusammensetzung genannt: 350%o Lanthanoxyd. 35%l Titandioxyd. 3o%o Zinndioxyl.A mass with the following composition is given as an example: 350% o lanthanum oxide. 35% l titanium dioxide. 3o% o tin dioxyl.

Claims (1)

PATENTANSPRUCH: Keramischer Isolierstoff. insbesondere Kondensatordielektrikum nach Patent r7673I6 und 767364. gekennzeichnet durch einen Gehalt von Lanthanoxyd. Zinndioxyd und 2o bis 300'o Titandiolvd.PATENT CLAIM: Ceramic insulating material. especially capacitor dielectric according to patent r7673I6 and 767364. characterized by a content of lanthanum oxide. Tin dioxide and 2o to 300'o titanium diol.
DESCH124838D 1942-05-13 1942-05-13 Ceramic insulating compound, especially capacitor dielectric Expired DE767426C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH124838D DE767426C (en) 1942-05-13 1942-05-13 Ceramic insulating compound, especially capacitor dielectric

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH124838D DE767426C (en) 1942-05-13 1942-05-13 Ceramic insulating compound, especially capacitor dielectric

Publications (1)

Publication Number Publication Date
DE767426C true DE767426C (en) 1952-07-31

Family

ID=7451834

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH124838D Expired DE767426C (en) 1942-05-13 1942-05-13 Ceramic insulating compound, especially capacitor dielectric

Country Status (1)

Country Link
DE (1) DE767426C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE980100C (en) * 1951-03-31 1970-11-19 Nat Lead Co Ceramic bodies with a high dielectric constant and process for the manufacture of these bodies
DE2634145A1 (en) * 1975-07-31 1977-02-03 Murata Manufacturing Co DIELECTRIC CERAMIC MASS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE980100C (en) * 1951-03-31 1970-11-19 Nat Lead Co Ceramic bodies with a high dielectric constant and process for the manufacture of these bodies
DE2634145A1 (en) * 1975-07-31 1977-02-03 Murata Manufacturing Co DIELECTRIC CERAMIC MASS

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