GB1469943A - Crystallizable glasses and glass-cermics - Google Patents
Crystallizable glasses and glass-cermicsInfo
- Publication number
- GB1469943A GB1469943A GB1558374A GB1558374A GB1469943A GB 1469943 A GB1469943 A GB 1469943A GB 1558374 A GB1558374 A GB 1558374A GB 1558374 A GB1558374 A GB 1558374A GB 1469943 A GB1469943 A GB 1469943A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- hours
- heating
- ceramic
- cermics
- 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
- 239000011521 glass Substances 0.000 title abstract 7
- 239000002241 glass-ceramic Substances 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000012535 impurity Substances 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
- H01B3/087—Chemical composition of glass
-
- 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
-
- 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
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/253—Silica-free oxide glass compositions containing germanium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Glass Compositions (AREA)
Abstract
1469943 Thermally crystallizable glass OWENS-ILLINOIS Inc 9 April 1974 15583/74 Heading C1M A glass thermally crystallizable to form a glass-ceramic comprises the glass having a molar ratio Na 2 O : Nb 2 O 5 of 0À8-1À2 : 1, the said three oxides totalling at least 90% by weight of the glass and there being not more than 10% by weight of incidental ingredients and impurities. The glass-ceramic formed from the glass preferably has a dielectric constant in excess of 150 and a dissipation factor of less than 2%. In the examples a transparent glass-ceramic is formed by heating the glass at 1050‹ F. for 2 hours and then at 1175‹ F. for 1 hour, and opaque glass-ceramics are formed by heating to 1200‹ F. for 2-8 hours, or by heating to 1175-1410‹ F. for 2 hours and then at 1150- 1175‹F. for 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1558374A GB1469943A (en) | 1974-04-09 | 1974-04-09 | Crystallizable glasses and glass-cermics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1558374A GB1469943A (en) | 1974-04-09 | 1974-04-09 | Crystallizable glasses and glass-cermics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1469943A true GB1469943A (en) | 1977-04-06 |
Family
ID=10061720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1558374A Expired GB1469943A (en) | 1974-04-09 | 1974-04-09 | Crystallizable glasses and glass-cermics |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1469943A (en) |
-
1974
- 1974-04-09 GB GB1558374A patent/GB1469943A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |