DE836062C - Ceramic insulating body - Google Patents
Ceramic insulating bodyInfo
- Publication number
- DE836062C DE836062C DEP26420A DEP0026420A DE836062C DE 836062 C DE836062 C DE 836062C DE P26420 A DEP26420 A DE P26420A DE P0026420 A DEP0026420 A DE P0026420A DE 836062 C DE836062 C DE 836062C
- Authority
- DE
- Germany
- Prior art keywords
- insulating body
- ceramic insulating
- dielectric
- temperature coefficient
- ceramic
- 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
Links
- 239000000919 ceramic Substances 0.000 title claims description 8
- 239000000203 mixture Substances 0.000 claims description 10
- 229910052790 beryllium Inorganic materials 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 6
- 229910007541 Zn O Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 229910052570 clay Inorganic materials 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims 2
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 claims 1
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 claims 1
- 239000004408 titanium dioxide Substances 0.000 claims 1
- 239000011787 zinc oxide Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 1
- 241000416162 Astragalus gummifer Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920001615 Tragacanth Polymers 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000196 tragacanth Substances 0.000 description 1
- 229940116362 tragacanth Drugs 0.000 description 1
- 235000010487 tragacanth Nutrition 0.000 description 1
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
-
- 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
- C04B35/465—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 based on alkaline earth metal titanates
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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)
- Compositions Of Oxide Ceramics (AREA)
Description
Die Erfindung bezieht sich auf einen keramischen Isolierkörper und auf die Anwendung eines solchen Körpers bei elektrischen Kondensatoren mit einem keramischen Dielektrikum. Bei Kondensatoren mit einem keramischen Dielektrikum mit einer hohen oder mittleren dielektrischen Konstante besteht häufig der Nachteil, daß der Temperaturkoeffizient der Kapazität hoch und nicht einstellgar ist. Ein weiterer Nachteil besteht in einigen Fällen darin, daß bei der Anfertigung hohe Sintertemperaturen von 1400 bis 150o° C verwendet werden müssen, damit das Material nicht porös wird. In anderen Fällen erfordern die Bestandteile eine Vorerhitzung, um das Auftreten gasförmiger oder flüchtiger Stoffe hintanzuhalten, welche sonst die Porosität erhöhen würden, und die Dichte des Materials zu vergrößern, so daß Risse bei der endgültigen Erhitzung vermieden werden.The invention relates to a ceramic insulating body and to the application of such a body in electrical capacitors with a ceramic dielectric. For capacitors with a ceramic dielectric with a high or medium dielectric constant often has the disadvantage that the temperature coefficient of the capacitance is high and not adjustable. A Another disadvantage is that in some cases high Sintering temperatures of 1400 to 150o ° C must be used to keep the material does not become porous. In other cases the components require preheating, to prevent the occurrence of gaseous or volatile substances, which otherwise would increase the porosity, and increase the density of the material, so that Cracks in the final heating can be avoided.
Isolierkörper nach der Erfindung sind anwendbar bei elektrischen Kondensatoren mit einem keramischen Dielektrikum mit einer dielektrischen Konstante größer als 21/4 und einem Temperaturkoeffizienten der Kapazität, der auf einen gewünschten, niedrigen Wert eingestellt ist. Zu diesem Zweck wird nach der Erfindung ein aus einem gesinterten Gemisch der Oxyde von Titan, Zink und Beryllium bestehendes Dielektrikum verwendet.Insulating bodies according to the invention are applicable to electrical capacitors with a ceramic dielectric with a dielectric constant greater than 21/4 and a temperature coefficient of the capacitance, which is based on a desired, is set to a low value. For this purpose, according to the invention, an off A dielectric consisting of a sintered mixture of the oxides of titanium, zinc and beryllium used.
Zur Erhaltung keramischer Dielektriken mit einer dielektrischen Konstante größer als 2o und einem Temperaturkoeffizienten zwischen 5oo X Io-0 und - 5oo X Ios muß die Zusammensetzung innerhalb des Vierecks A B C D des ternären Diagramms nach der Zeichnung fallen. Die Punkte A, B, C und D liegen bei den Zusammensetzungen 40 % Ti O, - 6o % Zn O, 70 % Ti O, - 30 % Zn O, 35 %Ti O,-65 0%Be O und 2o %Ti 0,-8o % Be O.To obtain ceramic dielectrics with a dielectric constant greater than 2o and a temperature coefficient between 500 X Io-0 and -5oo X Io, the composition must fall within the square ABCD of the ternary diagram according to the drawing. Points A, B, C and D are for the compositions 40% Ti O, -60% Zn O, 70% Ti O, -30% Zn O, 35% Ti O, -65% Be O and 20% Ti 0. -8o% Be O.
Der Temperaturkoeffizient der Kapazität kann zwischen bestimmten positiven
und negativen Werten gewählt werden. Jedem Temperaturkoeffizienten entspricht eine
Anzahl Zusammensetzungen mit verschiedener dielektrischer Konstante. Auf diese Weise
läßt sich bei einem gewählten Temperaturkoeffizienten die Kapazität eines Kondensators
innerhalb bestimmter Grenzen ändern, ohne daß eine Änderung der Abmessungen und
somit des bei der Formgebung des Dielektrikums verwendeten Werkzeugs erforderlich
ist. Beispiele von erfindungsgemäß in Betracht kommenden ZusammensetzuRgen mit den
dielektrischen Eigenschaften sind in der nachstehenden Tabelle angegeben. Sie liegen
auf der Linie E-F des ternären Diagramms.
Die erhaltenen Erzeugnisse werden dann in einer oxydierenden oder neutralen Atmosphäre auf Temperaturen bis etwa 1320'C erhitzt. Im allgemeinen ist bei der Herstellung der Kondensatoren eine Vorerhitzung der Oxyde nicht erforderlich,' was eine Vereinfachung der Herstellung bedeutet. Schließlich werden die gesinterten Erzeugnisse in bekannter Weise mit Elektroden, Kontaktdrähten und gegebenenfalls mit einem Schutz gegen atmosphärische Einflüsse versehen.The products obtained are then in an oxidizing or neutral atmosphere heated to temperatures up to about 1320'C. In general is Preheating of the oxides is not necessary when manufacturing the capacitors, ' which means a simplification of manufacture. Finally the sintered Products in a known manner with electrodes, contact wires and possibly provided with protection against atmospheric influences.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB836062X | 1947-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE836062C true DE836062C (en) | 1952-04-07 |
Family
ID=10554183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP26420A Expired DE836062C (en) | 1947-08-07 | 1948-12-24 | Ceramic insulating body |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE836062C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1564159B1 (en) * | 1964-04-16 | 1971-11-25 | Ibm | Dielectric for small capacitors |
-
1948
- 1948-12-24 DE DEP26420A patent/DE836062C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1564159B1 (en) * | 1964-04-16 | 1971-11-25 | Ibm | Dielectric for small capacitors |
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