GB1268845A - Improvements in or relating to the manufacture of crystallized glass - Google Patents
Improvements in or relating to the manufacture of crystallized glassInfo
- Publication number
- GB1268845A GB1268845A GB3465369A GB3465369A GB1268845A GB 1268845 A GB1268845 A GB 1268845A GB 3465369 A GB3465369 A GB 3465369A GB 3465369 A GB3465369 A GB 3465369A GB 1268845 A GB1268845 A GB 1268845A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- crystallized glass
- july
- hours
- carrying
- 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
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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
- C03C3/112—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen containing fluorine
-
- 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
-
- 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
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
1,268,845. Crystallized glass. NIPPON ELECTRIC GLASS CO. Ltd. 9 July, 1969 [29 July, 1968], No. 34653/69. Heading C1M. Crystallized glass is made from a glass comprising (in weight per cent) to an extent of at least 90%; SiO 2 55-73; Al 2 O 3 15-35; Li 2 O 2-6; ZrO 2 1-4; TiO 2 0À5-3; F 0.01-4; by carrying out a primary heat treatment for 0À5-20 hours between the transformation and softening temperatures of the glass, and then carrying out a secondary treatment by heating up to 850-1200‹ C. #-Encryptite is converted to #-Spodumene in the interior of the glass while remaining unchanged on the surface. The primary heat treatment may be at 700-770‹ C. The glass may be maintained at 850-1200‹ C. for 0-8 hours. The linear expansion coefficient of the crystallized glass is 7-30 x 10<SP>-7</SP>/‹ C., while the maximum bending strength is 1500- 6000 kg./cm.<SP>2</SP>. The surface compressive #- Eucryptite layer may be 50-100 Á thick.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5302768 | 1968-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1268845A true GB1268845A (en) | 1972-03-29 |
Family
ID=12931392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3465369A Expired GB1268845A (en) | 1968-07-29 | 1969-07-09 | Improvements in or relating to the manufacture of crystallized glass |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1268845A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016101066B3 (en) * | 2016-01-21 | 2017-02-23 | Schott Ag | Process for the preparation of a preferably non-colored glass-ceramic material with low scattered light content and glass-ceramic material produced according to the process and its use |
| DE102016211065A1 (en) | 2016-06-21 | 2017-12-21 | Schott Ag | Transparent, preferably colored glass ceramic article with low scattered light content and high strength, as well as processes for its preparation and its use |
-
1969
- 1969-07-09 GB GB3465369A patent/GB1268845A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016101066B3 (en) * | 2016-01-21 | 2017-02-23 | Schott Ag | Process for the preparation of a preferably non-colored glass-ceramic material with low scattered light content and glass-ceramic material produced according to the process and its use |
| EP3196174A1 (en) | 2016-01-21 | 2017-07-26 | Schott AG | Method for the manufacture of a preferably not coloured glass-ceramic material with a reduced diffused light and a glass ceramic material produced according to said method and its use |
| DE102017101114A1 (en) | 2016-01-21 | 2017-07-27 | Schott Ag | Process for the preparation of a preferably non-colored glass-ceramic material with low scattered light content and glass-ceramic material produced according to the process and its use |
| DE102017101114B4 (en) | 2016-01-21 | 2019-06-13 | Schott Ag | Process for the preparation of a preferably non-colored glass-ceramic material with low scattered light content and glass-ceramic material produced according to the process and its use |
| DE102016211065A1 (en) | 2016-06-21 | 2017-12-21 | Schott Ag | Transparent, preferably colored glass ceramic article with low scattered light content and high strength, as well as processes for its preparation and its use |
| DE102016211065B4 (en) | 2016-06-21 | 2019-09-05 | Schott Ag | Transparent, preferably colored glass ceramic article with low scattered light content and high strength, as well as processes for its preparation and its use |
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