DD218253A3 - MACHINABLY WORKABLE MAGNETIC GLASS CERAMICS - Google Patents
MACHINABLY WORKABLE MAGNETIC GLASS CERAMICS Download PDFInfo
- Publication number
- DD218253A3 DD218253A3 DD23772982A DD23772982A DD218253A3 DD 218253 A3 DD218253 A3 DD 218253A3 DD 23772982 A DD23772982 A DD 23772982A DD 23772982 A DD23772982 A DD 23772982A DD 218253 A3 DD218253 A3 DD 218253A3
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- glass
- machinable
- mica
- mass
- glass ceramics
- Prior art date
Links
- 239000002241 glass-ceramic Substances 0.000 title claims abstract description 18
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 12
- 239000010445 mica Substances 0.000 claims abstract description 17
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 17
- 239000013078 crystal Substances 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 11
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 6
- 230000008025 crystallization Effects 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract description 3
- 229910000272 alkali metal oxide Inorganic materials 0.000 abstract description 2
- 238000004870 electrical engineering Methods 0.000 abstract description 2
- 230000005293 ferrimagnetic effect Effects 0.000 abstract description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000029142 excretion Effects 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 iron ion Chemical class 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000006121 base glass Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000006112 glass ceramic composition Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052566 spinel group Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0081—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition having a magnetic crystal phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/16—Halogen containing crystalline phase
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
- H01F1/37—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Glass Compositions (AREA)
Abstract
Die Erfindung betrifft maschinell bearbeitbare magnetische Glaskeramik. Das Ziel der Erfindung besteht darin, maschinell bearbeitbaren Glaskeramiken gleichzeitig magnetische Eigenschaften zu verleihen. Die Aufgabe der Erfindung ist es, in einem Ausgangsglas sowohl Glimmerkristalle als auch ferrimagnetische Kristallphasen gleichzeitig zur Ausscheidung zu bringen. Die Aufgabe wird erfindungsgemaess dadurch geloest, dass in einem Grundglas der Zusammensetzung in Masse-% SiO2 39-51, Al2O3 0-21, MgO 8-15, R2O 5-13, F 2-7, Fe2O3 4-22, FeO 3-14 unter der Bedingung, dass R2O die Summe aus 0-9 Masse-% Na2O und 0-9 Masse-% K2O darstellt, nach dem Erschmelzen eine Kristallisation realisiert wird. Anwendungen sind in der elektrotechnischen Industrie und im Geraetebau moeglich.The invention relates to machinable magnetic glass ceramic. The object of the invention is to simultaneously impart magnetic properties to machinable glass ceramics. The object of the invention is to bring in an initial glass both mica crystals and ferrimagnetic crystal phases at the same time to excretion. The object is achieved according to the invention by dissolving in a basic glass of the composition in mass% SiO 2 39-51, Al 2 O 3 0-21, MgO 8-15, R 2 O 5-13, F 2-7, Fe 2 O 3 4-22, FeO 3. 14 under the condition that R2O represents the sum of 0-9 mass% Na2O and 0-9 mass% K2O, crystallization is realized after melting. Applications are possible in the electrical engineering industry and in the construction of equipment.
Description
237237
(Eitel der Erfindung(Title of the invention
Maschinell bearbeitbare magnetische GlaskeramikMachinable magnetic glass ceramic
Die Erfindung betrifft maschinell bearbeitbare magnetische Glaskeramik. Die Anwendung kann in der elektrotechnischen Industrie , im Geräte- und Maschinenbau erfolgen.The invention relates to machinable magnetic glass ceramic. The application can be made in the electrical engineering industry, in equipment and mechanical engineering.
Maschinell bearbeitbare Glaskeramiken, die Glimmerkristalle enthalten, sind bekannt. Die sehr gute Bearbeitbarkeit dieser Materialien wird durch die bevorzugte Spaltbarkeit der Glimmerkristalle erreicht. In den Patentschriften DDR-WP 122 062, DDR-WP ^i 11 886 und DDR-WP 124 181 werden derartige glaskeramische Materialien im System SiO^-AlgOo-iflgO-Alkalioxid-I'"' bei Zusätzen von PeO, Pe2Oo unä weiteren Oxiden beschrieben. Während die maschinelle Bearbeitbarkeit dieser Glaskeramiken hervorgehoben wird, werden keine Aussagen zu magnetischen Eigenschaften gemacht.Machinable glass-ceramics containing mica crystals are known. The very good machinability of these materials is achieved by the preferred cleavability of the mica crystals. In the patents DDR-WP 122 062, DDR-WP ^ i 11 886 and DDR-WP 124 181 such glass-ceramic materials in the system SiO ^ -AlgOo-iflgO-alkali oxide I '"' with additions of PeO, Pe 2 Oo unä While the machinability of these glass-ceramics is emphasized, no statements are made on magnetic properties.
Glaskeramiken mit magnetischen Eigenschaften sind nur in Systemen bekannt, die keine Glimmerphasen und demzufolge keine maschinelle Bearbeitbarkeit aufweisen (OS-PS 4 083 727, US-PS 4 084 973, US-PS 4 084 972, US-PS 4 140 645 und,/ US-PS 4 083 709).Glass-ceramics with magnetic properties are known only in systems which have no mica phases and consequently no machinability (OS-PS 4 083 727, US-PS 4 084 973, US-PS 4 084 972, US-PS 4 140 645 and, / U.S. Patent 4,083,709).
T729T729
Ziel der'ErfindungAim of the invention
Das Ziel der Erfindung bestellt; darin, maschinell bearbeitbare Glaskeramiken mit gleichzeitig magnetischen Eigenschaften zu entwickeln und damit die Nachteile des Standes der Technik zu überwinden.Ordered the aim of the invention; This is to develop machinable glass ceramics with simultaneously magnetic properties and thus to overcome the disadvantages of the prior art.
Darlegung desWesens der Erfindung Explanation of the essence of the invention
Aufgabe d§3? $rfindun$ left n&9 in β&ηβκι Aupgangsglas sowohl Glimmerkristalle als auch feCTimagnotisohe Kristallphasen gleichzeitig zur A usscheidung zu bringen und damit eine maschinell bearbeitbare magnetische Glaskeramik zu erzeugen»Task d§3? $ $ rfindun left n 9 to bring the same to the A usscheidung and thus to produce a machinable glass-ceramic magnetic β in & ηβκι Aupgangsglas both mica crystals also feCTimagnotisohe crystal phases "
Die Aufgabe der Erfindung wird erfindungsgemäß dadurch gelöst, daß in einem Grundglas der Zusammensetzung in Masse-%The object of the invention is achieved in that in a base glass of the composition in mass%
unter der Bedingung, daß R2O die Summe aus 0-9 Masse-% Na?0 und 0-9 Masse-% K2O darstellt, nach dem Erschmelzen eine Kristallisation realisiert wird. Es wurde überraschend gefunden, daß die Ausgangsgläser, die in ihrer Zusammensetzung nahe Konzentrationsbereiche bekannter maschinell bearbeitbarer Glaskeramiken liegen, zu einer gesteuerten Ausscheidung unterschiedlicher Kristallphasen gebracht werden können. Dies gelang erfindungsgemäß durch eine geeignete Kombination von Oxiden in der Weise} daß Magnetit und weitere Ferrospinelle und Glimmerkristalle durch in situ Kristallisation in den Gläsern entstehen. Die Voraussetzung für die Herstellung der erfindungsgemäßen Glaskeramik ist die Steuerung der Primärkristallisationsprozessee under the condition that R 2 O is the sum of 0-9 mass% Na ? 0 and 0-9 mass% K 2 O represents, after the crystallization crystallization is realized. It has surprisingly been found that the starting glasses, whose composition is close to the concentration ranges of known machinable glass-ceramics, can be brought to a controlled precipitation of different crystal phases. This was achieved according to the invention by a suitable combination of oxides in such a way that} magnetite and other Ferro spinels and mica crystals are formed by in situ crystallization in the glasses. The prerequisite for the production of the glass ceramic according to the invention is the control of the primary crystallization processes e
Die zu realisierende Kristallisation der Ausgangsgläser ge^ lingt nach der Erfindung durch gesteuerte Kühlung der Gläser aus der Schmelze im Bereich 1100 0O bis 500 0O oder durch thermische Nachbehandlung der Ausgangsgläser im Bereich 750 0C bis 1200 0G. , 'The crystallization of the starting glasses to be realized according to the invention by controlled cooling of the glasses from the melt in the range of 1100 0 O to 500 0 O or by thermal aftertreatment of the starting glasses in the range 750 0 C to 1200 0 G., '
2323
Die Glimmerkristalle gewährleisten in der erfindungsgemäßen Glaskeramik die maschinelle Bearbeitbarkeit des Materials. Dabei kann es sich um phlogopit- oder biotit-ähnliche Glimmer mit unterschiedlichen Eisenionenkonzentration infoige atufenweiser Substitution der Aluminiumionen handeln. Die ferrimagnetischen Kristalle (Magnetit, Ferrospinell), die den Magnetismus realiseiren, sind dabei zwischen den Glimmerblättchen angeordnet, so daß die maschinelle Bearbeitbarkeit der Materialien erhalten bleibt.The mica crystals ensure the machinability of the material in the glass ceramic according to the invention. These may be phlogopite- or biotite-like mica with different iron ion concentrations, as well as an initial substitution of the aluminum ions. The ferrimagnetic crystals (magnetite, ferrospinell), which realizes the magnetism, are arranged between the mica sheets, so that the machinability of the materials is maintained.
. _ 4 —, _ 4 -
Ausführungsbeispieleembodiments
377377
Tabelle 1 zeigt einen tjberblick über die Zusammensetzungen der erfindungsgemäßen Glaskeramik bzw. deren Ausgangsgläser. In Tabelle 2 werden Beispiele für die Eigenschaftskombination von maschineller Bearbeitbarkeit und magnetischen Eigenschaften gemäß des gestellten Zieles gegeben. Diese Eigenschaften sind in Abhängigkeit von thermischer Behandlung und Art der Kristallphase wiedergegeben» Gleichzeitig kann ergänzt werden, daß die chemischen Eigenschaften der erfindungsgemäßen Glaskeramik vergleichsweise gut sind und die thermischen Eigenschaften durch den linearen thermischen Ausdehnungskoeffizieten von ca. 55 - 95 · 10""^K1 für 25 0O bis 300 0C charakterisiert werden können· Die erfindungsgemäßen Glaskeramiken stellen magnetisch weiche Materialien mit den für sie charakteristischen Hysteresiskurven dar. Die Curiepunkte der erfindungsgemäßen Glaskeitamiken liegen zwischen 575 0G und 6O5 0O.Table 1 shows an overview of the compositions of the glass ceramic according to the invention or their starting glasses. In Table 2, examples of the property combination of machinability and magnetic properties are given in accordance with the object. These properties are given as a function of the thermal treatment and the nature of the crystal phase. "At the same time, it can be added that the chemical properties of the glass-ceramic according to the invention are comparatively good and the thermal properties are approximately 55-95 × 10 -5 K by the linear thermal expansion coefficient can the glass ceramics of the invention provide soft magnetic materials is the characteristic for them hysteresis curves are characterized 1 for 25 0 O to 300 0 C ·. the Curie points of the invention Glaskei t amiken be between 575 0 G and 6O5 0 O.
- Q M fl H G J- Q M fl H G J
7729077290
kontrollier- biotit—ähnli- sehr gutcontrol biotite-like very well
te Kühlung eher Glimmer, der Schmelze Ferrospinell im Bereichte cooling rather mica, the melt ferrospinell in the area
1100 OQ bis1100 OQ to
500 0C und500 0 C and
anschließendsubsequently
1200; 11200; 1
kontrollier-K(Mg. JFe )~ gut 'control K ( Mg.JFe ) ~ good '
te Kühlung PaSl 0 F der Schmelze 3 10 2~" im Bereich Glimmer, 1100 G bis Ferrospinell 500 0Gcooling PaSl 0 F of the melt 3 10 2 ~ "in the range mica, 1100 G to Ferrospinell 500 0 G
8,68.6
22,422.4
nil .: ι . --. 11nil.: ι. -. 11
Claims (1)
3. = O - 21 'SiO 2 = 39-51 ·
3 . = O - 21 '
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD23772982A DD218253A3 (en) | 1982-02-26 | 1982-02-26 | MACHINABLY WORKABLE MAGNETIC GLASS CERAMICS |
| YU46283A YU46283A (en) | 1982-02-26 | 1983-02-25 | Process for the manufacture of magnetic vitreous ceramics |
| DE19833306683 DE3306683A1 (en) | 1982-02-26 | 1983-02-25 | Machinable, magnetic glass ceramics material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD23772982A DD218253A3 (en) | 1982-02-26 | 1982-02-26 | MACHINABLY WORKABLE MAGNETIC GLASS CERAMICS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD218253A3 true DD218253A3 (en) | 1985-01-30 |
Family
ID=5536934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD23772982A DD218253A3 (en) | 1982-02-26 | 1982-02-26 | MACHINABLY WORKABLE MAGNETIC GLASS CERAMICS |
Country Status (3)
| Country | Link |
|---|---|
| DD (1) | DD218253A3 (en) |
| DE (1) | DE3306683A1 (en) |
| YU (1) | YU46283A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD247888A1 (en) * | 1984-01-24 | 1987-07-22 | Univ Schiller Jena | PHOSPHATE CERAMIC |
| DE19740353C2 (en) * | 1997-09-13 | 2001-06-07 | Inst Physikalische Hochtech Ev | Compact magnetic glass-ceramic molded body with a high fill factor of magnetic particles and a process for its production |
| US8021999B2 (en) | 2008-06-23 | 2011-09-20 | Corning Incorporated | High strength machinable glass-ceramics |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD113885A1 (en) * | 1973-12-27 | 1975-07-05 | ||
| DD122062A1 (en) * | 1975-05-21 | 1976-09-12 | ||
| DD124181A1 (en) * | 1975-12-30 | 1977-02-09 | ||
| US4118237A (en) * | 1977-08-04 | 1978-10-03 | Corning Glass Works | Glass-ceramics displaying inherent lubricity |
-
1982
- 1982-02-26 DD DD23772982A patent/DD218253A3/en not_active IP Right Cessation
-
1983
- 1983-02-25 YU YU46283A patent/YU46283A/en unknown
- 1983-02-25 DE DE19833306683 patent/DE3306683A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| YU46283A (en) | 1985-12-31 |
| DE3306683A1 (en) | 1983-09-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENJ | Ceased due to non-payment of renewal fee |