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DE1010000B - Lithium porcelain - Google Patents

Lithium porcelain

Info

Publication number
DE1010000B
DE1010000B DEST8538A DEST008538A DE1010000B DE 1010000 B DE1010000 B DE 1010000B DE ST8538 A DEST8538 A DE ST8538A DE ST008538 A DEST008538 A DE ST008538A DE 1010000 B DE1010000 B DE 1010000B
Authority
DE
Germany
Prior art keywords
lithium
porcelain
parts
added
amounts
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
DEST8538A
Other languages
German (de)
Inventor
Dr Max Linseis
Dr-Ing Gerhard Mueller
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.)
STAATLICHE PORZELLAN MANUFAKTU
Original Assignee
STAATLICHE PORZELLAN MANUFAKTU
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 STAATLICHE PORZELLAN MANUFAKTU filed Critical STAATLICHE PORZELLAN MANUFAKTU
Priority to DEST8538A priority Critical patent/DE1010000B/en
Publication of DE1010000B publication Critical patent/DE1010000B/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/13Compounding ingredients
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16Shaped 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 silicates other than clay
    • C04B35/18Shaped 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 silicates other than clay rich in aluminium oxide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Description

Lithium-Porzellan Die Erfindung bezieht sich auf porzellanähnliche Körper mit sehr niedrigem Ausdehnungskoeffizienten, hoher Temperaturwechselbeständigkeit und porzellanähnlichen mechanischen Eigenschaften auf Li-Al-Silikatbasis ; sie besteht darin, daß Verbindungen des Bleis, Bors, Mangans, Kobalts und Lithiums einzeln oder in Mischung in Mengen bis zu 4% und/oder Tonmineralien und/oder Quarz in Mengen bis zu 30% zugesetzt werden.Lithium porcelain The invention relates to porcelain-like Body with a very low coefficient of expansion, high resistance to temperature changes and porcelain-like mechanical properties based on Li-Al-silicate; she consists that compounds of lead, boron, manganese, cobalt and lithium individually or in a mixture in amounts up to 4% and / or clay minerals and / or quartz in amounts up to 30% can be added.

Die Verwendung von Lithium-Massen zur Herstellung keramischer Körper ist bekannt. Es werden hierfür besonders Lithium-Aluminium-Silikate wie Spodumen und Eucryptit und deren Zwischenprodukte verwendet. Es ist bekannt, daß damit Körper mit einem Ausdehnungskoeffizienten von -3 - 10-B bis 3 - 10-B erhalten werden können. Dies ist darauf zurückzuführen, daß diese Lithium-Silikate Kristallformen aufweisen, welche den Hochtemperaturmodifikationen der Kieselsäure ähneln. Derartige Körper haben aber den großen Nachteil, daß sie porös sind und außerdem sehr schwierig zu brennen sind, da sie eine sehr enge Sinterperiode besitzen. Sie sind deshalb für industrielle Erzeugung kaum geeignet.The use of lithium masses for the production of ceramic bodies is known. Lithium aluminum silicates such as spodumene are particularly used for this purpose and eucryptite and their intermediates are used. It is known that with it body with an expansion coefficient of -3-10-B to 3-10-B can be obtained. This is due to the fact that these lithium silicates have crystal forms, which resemble the high temperature modifications of silica. Such bodies but have the major disadvantage that they are porous and also very difficult to are burning because they have a very narrow sintering period. They are therefore for industrial production hardly suitable.

Auch hat man schon vorgeschlagen, glasige Körper herzustellen der allgemeinen Zusammensetzung 33 Teile Borsäure, 33 Teile Mennige, dazu 9 Teile Lithiumnitrat bzw. 15 Teile Lithiumcarbonat. Ferner kann auch ein Lithiummineral »Lepidolith« verwendet werden, das bis zu 60°/o höchstens zum Einsatz kommt; die restlichen 40°/o bestehen aus Borsäure und Blei-Mennige. Derartige Glasflüsse werden beispielsweise zum Einbrennen von Aufglasurfarben verwendet; porzellanartige Körper lassen sich daraus aber nicht formen. Zur Herstellung von Zündkerzen, Isolatoren und ähnlichen Geräten hat man auch bereits Massen verwendet, die aus mindestens 92% A120, bestehen und bei wenigstens 1650° gebrannt werden.It has also already been proposed to produce glassy bodies with the general composition 33 parts boric acid, 33 parts red lead, plus 9 parts lithium nitrate or 15 parts lithium carbonate. Furthermore, a lithium mineral "lepidolite" can be used, which is used up to 60% at most; the remaining 40 per cent. consist of boric acid and red lead. Such glass flows are used, for example, for baking on-glaze colors; However, porcelain-like bodies cannot be formed from it. For the production of spark plugs, insulators and similar devices, compounds have already been used which consist of at least 92% A120 and are burned at at least 1650 °.

Demgegenüber handelt es sich bei der Erfindung um porzellanartige Massen, die nachstehende Eigenschaften aufweisen: Sie besitzen a) einen Ausdehnungskoeffizient in der Größenordnung von -3 bis -I- 10 - 10-7, b) eine außerordentlich hohe Temperaturwechselbeständigkeit, c) eine Wasseraufnahme von 0 bis etwa 0,5%; d) sie sind in ihren mechanischen Eigenschaften ähnlich normalem Porzellan und sind e) nach normalem keramischem Verarbeitungsverfahren (Drehen, Gießen usw.) zu verarbeiten. Dies wird technisch dadurch ermöglicht, daß den Lithium-Aluminium-Silikaten Zusätze zugefügt werden, welche bewirken, 2 1. daß die einzelnen Lithium-Aluminium-Silikatkristalle fest aneinandergekittet werden, 2. die eine solche Zwischenschicht bilden, welche die günstigen Eigenschaften der Lithium-Aluminium-Silikate nicht oder nur wenig beeinflußt, 3. welche mit dem verwendeten Lithium-Aluminium-Silikat ganz oder zum Teil ein neues Lithium-Aluminium-Silikat bilden, das die gewünschten Eigenschaften aufweist.In contrast, the invention is porcelain-like Compounds that have the following properties: They have a) a coefficient of expansion in the range of -3 to -I- 10 - 10-7, b) an extraordinarily high thermal shock resistance, c) a water uptake of 0 to about 0.5%; d) they are in their mechanical properties similar to normal porcelain and are e) after normal ceramic processing methods (Turning, casting, etc.). This is technically possible in that the lithium-aluminum-silicates additives are added which cause 2 1. that the individual lithium aluminum silicate crystals are firmly cemented together, 2. which form such an intermediate layer, which the favorable properties of the Lithium-aluminum-silicates not or only slightly influenced, 3. which with the used Lithium aluminum silicate in whole or in part a new lithium aluminum silicate form that has the desired properties.

Als derartige Zusätze eignen sich unter anderem Boroxyd, die Chloride des Mangans und des Kobalts und Lithiummolybdate. Außerdem können den ursprünglichen Lithium-Aluminium-Silikatfritten Tonmineralien in solcher Menge zugefügt werden, daß im Brand neue Lithium-Aluminium-Silikate mit den gewünschten Eigenschaften entstehen.Such additives include boron oxide, the chlorides of manganese and cobalt and lithium molybdates. You can also use the original Lithium aluminum silicate frits are added to clay minerals in such an amount that that new lithium aluminum silicates with the desired properties are created in the fire.

Als Beispiele für derartige Versätze seien folgende genannt: 1. Man frittet 1 Mol Lithiumcarbonat, 1 Mol Aluminiumoxyd und 6 Mol Si 02 mit einem Zusatz von 511@ Zirkonoxyd bei Temperaturen von 1100 bis 1300°, zerkleinert diese Fritte, mahlt sie und gibt auf 100 Teile dieser Fritte 1 Gewichtsteil Manganchlorid, 6 Gewichtsteile Boroxyd und 15 Gewichtsteile feuerfesten Ton. Diese Menge wird bei etwa 1300 ,bis 1350° gargebrannt.The following are examples of such offsets: 1. Man frits 1 mol of lithium carbonate, 1 mol of aluminum oxide and 6 mol of Si 02 with an additive of 511 @ zirconium oxide at temperatures from 1100 to 1300 °, this frit comminutes, grinds it and gives 1 part by weight of manganese chloride, 6 parts by weight, to 100 parts of this frit Boron oxide and 15 parts by weight of refractory clay. This amount is around 1300, up Cooked at 1350 °.

2. Man frittet 1 Mol Lithiumcarbonat, 1 Mol Aluminiumoxyd und 4 Mol Si 02 mit 5%: Zirkonoxyd und gibt 100 Teilen dieser Fritte 5 Teile einer weiteren Fritte aus 50 Teilen Si 02 und 50 Teilen B2 03 zu sowie außerdem 2 Teile Manganchlorid. Diese Masse wird bei 1300 bis 1330° gebrannt.2. One frits 1 mol of lithium carbonate, 1 mol of aluminum oxide and 4 mol Si 02 with 5%: zirconium oxide and gives 100 parts of this frit 5 parts of another Frit made from 50 parts of Si 02 and 50 parts of B2 03 and also 2 parts of manganese chloride. This mass is burned at 1300 to 1330 °.

3. 100 Teile der unter Nummer 1 genannten Fritte werden mit 3 Teilen Lithium-Molybdat, 2 Teilen Bleifluorid, 1 Teil Boroxyd und 15 Teilen Kaolin versetzt und bei 1300 bis 1320° gargebrannt.3. 100 parts of the frit mentioned under number 1 are made with 3 parts Lithium molybdate, 2 parts lead fluoride, 1 part boron oxide and 15 parts Kaolin is added and burned at 1300 to 1320 °.

4. 100 Teile der unter Nummer 2 genannten Lithiumfritte werden 20 Teile Kaolin und 14 Teile Quarz zugesetzt.4. 100 parts of the lithium frit mentioned under number 2 are 20 Parts of kaolin and 14 parts of quartz were added.

Claims (2)

PATENTANSPRÜCHE: 1. Porzellanähnlicher Körper mit sehr niedrigem Ausdehnungskoeffizient, hoher Temperaturwechselbeständigkeit und porzellanähnlichen mechanischen Eigenschaften auf Li-Al-Silikatbasis, dadurch gekennzeichnet, daB Verbindungen des Bleis, Bors, Mangans, Kobalts und Lithiums einzeln oder in Mischung in Mengen bis zu 49/a und/oder Tonmineralien und/oder Quarz in Mengen bis zu 309/o zugesetzt sind. PATENT CLAIMS: 1. Porcelain-like body with a very low coefficient of expansion, high thermal shock resistance and mechanical properties similar to porcelain based on Li-Al-silicate, characterized in that compounds of lead, boron, Manganese, cobalt and lithium individually or in a mixture in amounts up to 49 / a and / or Clay minerals and / or quartz are added in amounts up to 309 / o. 2. Verfahren zur Herstellung von Porzellan nach Anspruch 1, dadurch gekennzeichnet, dali die Lithium-Aluminium-Silikate gegebenenfalls mit einem Zusatz von Zirkonoxyd bei Temperaturen von 1000 bis 1500° gefrittet werden und zu der zerkleinerten und gemahlenen Fritte die Zusätze nach Anspruch 1 gegeben werden. In Betracht gezogene Druckschriften: USA.-Patentschriften Nr. 2426395, 2414369; Berichte der Deutschen Keramischen Gesellschaft, 1952, S. R2 und R 11.2. Process for the production of porcelain according to claim 1, characterized in that the lithium aluminum silicates are fritted optionally with an addition of zirconium oxide at temperatures of 1000 to 1500 ° and the additives according to claim 1 are added to the comminuted and ground frit . References considered: U.S. Patent Nos. 2426395, 2414369; Reports of the German Ceramic Society, 1952, pp. R2 and R 11.
DEST8538A 1954-07-29 1954-07-29 Lithium porcelain Pending DE1010000B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEST8538A DE1010000B (en) 1954-07-29 1954-07-29 Lithium porcelain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST8538A DE1010000B (en) 1954-07-29 1954-07-29 Lithium porcelain

Publications (1)

Publication Number Publication Date
DE1010000B true DE1010000B (en) 1957-06-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEST8538A Pending DE1010000B (en) 1954-07-29 1954-07-29 Lithium porcelain

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124861B (en) * 1958-02-12 1962-03-01 Corning Glass Works Process for the production of pore-free ceramic objects on the basis of petalite
DE1158434B (en) * 1959-08-12 1963-11-28 Steinzeugwarenfabrik Fuer Kana Stoneware resistant to temperature changes and process for its production
DE1238376B (en) * 1964-01-29 1967-04-06 Rosenthal Ag Ceramic materials resistant to temperature changes
WO2009153320A1 (en) * 2008-06-19 2009-12-23 Yuri Schiocchet A structure made of ceramic material and relative production process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414369A (en) * 1947-01-14 Vitreous and vttrifiable composi
US2426395A (en) * 1939-05-22 1947-08-26 Kelsey I Harvey Ceramic composition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414369A (en) * 1947-01-14 Vitreous and vttrifiable composi
US2426395A (en) * 1939-05-22 1947-08-26 Kelsey I Harvey Ceramic composition

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124861B (en) * 1958-02-12 1962-03-01 Corning Glass Works Process for the production of pore-free ceramic objects on the basis of petalite
DE1158434B (en) * 1959-08-12 1963-11-28 Steinzeugwarenfabrik Fuer Kana Stoneware resistant to temperature changes and process for its production
DE1238376B (en) * 1964-01-29 1967-04-06 Rosenthal Ag Ceramic materials resistant to temperature changes
WO2009153320A1 (en) * 2008-06-19 2009-12-23 Yuri Schiocchet A structure made of ceramic material and relative production process

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