GB1221851A - Improvements in or relating to glass ceramics - Google Patents

Improvements in or relating to glass ceramics

Info

Publication number
GB1221851A
GB1221851A GB1433668A GB1433668A GB1221851A GB 1221851 A GB1221851 A GB 1221851A GB 1433668 A GB1433668 A GB 1433668A GB 1433668 A GB1433668 A GB 1433668A GB 1221851 A GB1221851 A GB 1221851A
Authority
GB
United Kingdom
Prior art keywords
mgo
tio
zro
zno
bao
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
Application number
GB1433668A
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.)
Schott AG
Carl Zeiss AG
Original Assignee
Jenaer Glaswerk Schott and Gen
Carl Zeiss AG
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 Jenaer Glaswerk Schott and Gen, Carl Zeiss AG filed Critical Jenaer Glaswerk Schott and Gen
Publication of GB1221851A publication Critical patent/GB1221851A/en
Expired legal-status Critical Current

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
    • 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
    • C03C10/0018—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 containing SiO2, Al2O3 and monovalent metal oxide as main constituents
    • C03C10/0027—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 containing SiO2, Al2O3 and monovalent metal oxide as main constituents containing SiO2, Al2O3, Li2O as main constituents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

1,221,851. Glass ceramics. CARL-ZEISSSTIFTUNG, [trading as JENAER GLASWERK SCHOTT & GEN.]. 25 March, 1968 [29 March, 1967; 11 Nov., 1967], No. 14336/68. Heading C1M. A composition for the production of an opaque or transparent glass ceramic comprises the following constituents expressed as parts by weight: SiO 2 , 54À0-62À0; B 2 O 3 , 0-6À4; Al 2 O 3 , 14À5-23À0; Li 2 O, 1À5-2À9; CaO, 0-1À9; BaO, 0-7À0; MgO, 0-7À5; ZnO, 0-12À0; P 2 O 5 , 0-8À0; TiO 2 , 0À6-1À8; ZrO 2 , 1À8-4À0; AS 2 O 3 and/or Sb 2 O 3 , 0À15-1À0, in which the content CaO+BaO+MgO+ZnO is 7À5 to 19 and P 2 O 5 +TiO 2 +ZrO 2 is 3.6 to 11.6, the balance, if any, being one or more compatible constituents. The opaque glass ceramic may be prepared by heat-treatment of a glass obtained by fusion of the above composition and comprises two or more crystalline phases of #- eucryptite solid solution, spodumene, zinc spinel and celsian. A particular process comprises fusing a specified glass composition and heat-treating the resultant glass ceramic as follows:-(a) heating up from room temperature to 720Œ20‹ C. at 2-6‹ C. / min.; (b) maintaining the glass ceramic for 2 hours at 720Œ20‹ C.; (c) further raising the temperature to 820Œ 30‹ C. at 2-6‹ C./min.; (d) maintaining at 820Œ30‹ C. for 3 hours; (e) cooling to ambient temperature at less than 4‹ C. per minute. A transparent glass ceramic containing only #-eucryptite solid solution as crystalline phase is obtained by a similar heat treatment of a glass obtained by fusion of the composition in parts by weight:-SiO 2 , 60-62; Al 2 O 3 , 21-23; P 2 O 5 , 0-1À0; Li 2 O, 2À6-2À9; ZnO, 5À0-8À5; MgO, 0-20; BaO, 0-2À0; CaO, 0-1À5; TiO 2 , 1À5-1À8; ZrO 2 , 1À8-2À5; As 2 O 3 and/or Sb 2 O 3 0À5-1À0, in which SiO 2 +Al 2 O 3 +P 2 O 5 is 82-85; ZnO+MgO+BaO+CaO is 8À0-11À5, the ratio ZnO/MgO # 3.5, TiO 2 +ZrO 2 is 3.6-4.3, the ratio ZrO 2 /TiO 2 is 1À0-1À7.
GB1433668A 1967-03-29 1968-03-25 Improvements in or relating to glass ceramics Expired GB1221851A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEJ0033321 1967-03-29
DEJ0035010 1967-11-11

Publications (1)

Publication Number Publication Date
GB1221851A true GB1221851A (en) 1971-02-10

Family

ID=25982732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1433668A Expired GB1221851A (en) 1967-03-29 1968-03-25 Improvements in or relating to glass ceramics

Country Status (6)

Country Link
BE (1) BE744573Q (en)
CH (1) CH502278A (en)
DE (2) DE1596855B2 (en)
FR (1) FR1562377A (en)
GB (1) GB1221851A (en)
NL (1) NL6804317A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5968857A (en) * 1997-03-31 1999-10-19 Corning Incorporated Glass-ceramics
US6197429B1 (en) 1998-02-26 2001-03-06 Corning Incorporated Method for making transparent glass-ceramics with high temperature dimensional stability
US6248678B1 (en) 1998-10-27 2001-06-19 Corning Incorporated Low expansion glass-ceramics
US10544059B2 (en) 2013-08-30 2020-01-28 Corning Incorporated Ion exchangeable glass, glass ceramics and methods for making the same
CN111620566A (en) * 2020-05-15 2020-09-04 华南理工大学 Multiphase transparent ceramic, multiphase transparent ceramic optical fiber, and preparation method and application thereof
CN112512979A (en) * 2018-07-16 2021-03-16 康宁股份有限公司 Method for ceramizing glass by using nucleation and growth density and viscosity change
EP3634918B1 (en) 2017-06-07 2021-04-14 Eurokera Transparent beta-quartz glass-ceramics with low lithium content
US11292741B2 (en) 2018-12-12 2022-04-05 Corning Incorporated Ion-exchangeable lithium-containing aluminosilicate glasses

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159514B (en) * 1984-05-23 1987-12-02 Zeiss Stiftung Glass ceramic with specific thermal expansion behaviour

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1010513A (en) * 1962-02-02 1965-11-17 Fuji Photo Film Co Ltd Improvements in or relating to crystalline glass and to methods of making the same
FR1382060A (en) * 1962-03-31 1964-12-18 Nippon Electric Glass Co Acid Resistant and Low Thermal Expansion Ceramic Glass Manufacturing Method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5968857A (en) * 1997-03-31 1999-10-19 Corning Incorporated Glass-ceramics
US6197429B1 (en) 1998-02-26 2001-03-06 Corning Incorporated Method for making transparent glass-ceramics with high temperature dimensional stability
US6248678B1 (en) 1998-10-27 2001-06-19 Corning Incorporated Low expansion glass-ceramics
US10544059B2 (en) 2013-08-30 2020-01-28 Corning Incorporated Ion exchangeable glass, glass ceramics and methods for making the same
US11667563B2 (en) 2013-08-30 2023-06-06 Corning Incorporated Ion exchangeable glass, glass ceramics and methods for making the same
EP3634918B1 (en) 2017-06-07 2021-04-14 Eurokera Transparent beta-quartz glass-ceramics with low lithium content
CN112512979A (en) * 2018-07-16 2021-03-16 康宁股份有限公司 Method for ceramizing glass by using nucleation and growth density and viscosity change
CN112512979B (en) * 2018-07-16 2022-09-20 康宁股份有限公司 Method for ceramizing glass by using nucleation and growth density and viscosity change
US11292741B2 (en) 2018-12-12 2022-04-05 Corning Incorporated Ion-exchangeable lithium-containing aluminosilicate glasses
CN111620566A (en) * 2020-05-15 2020-09-04 华南理工大学 Multiphase transparent ceramic, multiphase transparent ceramic optical fiber, and preparation method and application thereof

Also Published As

Publication number Publication date
FR1562377A (en) 1969-04-04
DE1596855A1 (en) 1970-12-17
DE1596863B1 (en) 1972-01-13
DE1596855B2 (en) 1971-11-25
NL6804317A (en) 1968-09-30
BE744573Q (en) 1970-07-01
CH502278A (en) 1971-01-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee