GB940706A - A crystalline or vitreous-crystalline devitrified glass having a negative or very low and positive thermal expansion coefficient - Google Patents

A crystalline or vitreous-crystalline devitrified glass having a negative or very low and positive thermal expansion coefficient

Info

Publication number
GB940706A
GB940706A GB1119961A GB1119961A GB940706A GB 940706 A GB940706 A GB 940706A GB 1119961 A GB1119961 A GB 1119961A GB 1119961 A GB1119961 A GB 1119961A GB 940706 A GB940706 A GB 940706A
Authority
GB
United Kingdom
Prior art keywords
crystalline
negative
low
thermal expansion
vitreous
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
GB1119961A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens 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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB940706A publication Critical patent/GB940706A/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

A ceramic glass material has a coefficient of thermal expansion which is either negative or very low and positive and consists predominantly, in a proportion of at least 50% by weight, of beta-eucryptite as devitrification product. Examples of suitable compositions of SiO2, Al2O3 and Li2O are given, which include also TiO2 and MgO. TiO2 can be present up to 10% and MgO up to 8%. B2O3 may also be present up to 8%.
GB1119961A 1960-03-26 1961-03-27 A crystalline or vitreous-crystalline devitrified glass having a negative or very low and positive thermal expansion coefficient Expired GB940706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0067757 1960-03-26

Publications (1)

Publication Number Publication Date
GB940706A true GB940706A (en) 1963-10-30

Family

ID=7499782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1119961A Expired GB940706A (en) 1960-03-26 1961-03-27 A crystalline or vitreous-crystalline devitrified glass having a negative or very low and positive thermal expansion coefficient

Country Status (2)

Country Link
DE (1) DE1421927A1 (en)
GB (1) GB940706A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279931A (en) * 1963-02-13 1966-10-18 Corning Glass Works Glass-ceramic body and method of making it
EP0880718A2 (en) * 1996-01-16 1998-12-02 Corning Incorporated Athermal optical device
US6209352B1 (en) 1997-01-16 2001-04-03 Corning Incorporated Methods of making negative thermal expansion glass-ceramic and articles made thereby
US6455451B1 (en) 1998-12-11 2002-09-24 Jeneric/Pentron, Inc. Pressable lithium disilicate glass ceramics
US6490394B1 (en) 1996-01-16 2002-12-03 Corning Incorporated Athermal optical device
US6802894B2 (en) 1998-12-11 2004-10-12 Jeneric/Pentron Incorporated Lithium disilicate glass-ceramics
US7254297B1 (en) 1996-01-16 2007-08-07 Corning Incorporated Athermal optical devices employing negative expansion substrates

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279931A (en) * 1963-02-13 1966-10-18 Corning Glass Works Glass-ceramic body and method of making it
EP0880718A2 (en) * 1996-01-16 1998-12-02 Corning Incorporated Athermal optical device
EP0880718A4 (en) * 1996-01-16 1999-09-22 Corning Inc Athermal optical device
US6490394B1 (en) 1996-01-16 2002-12-03 Corning Incorporated Athermal optical device
US7254297B1 (en) 1996-01-16 2007-08-07 Corning Incorporated Athermal optical devices employing negative expansion substrates
US6209352B1 (en) 1997-01-16 2001-04-03 Corning Incorporated Methods of making negative thermal expansion glass-ceramic and articles made thereby
US6455451B1 (en) 1998-12-11 2002-09-24 Jeneric/Pentron, Inc. Pressable lithium disilicate glass ceramics
US6802894B2 (en) 1998-12-11 2004-10-12 Jeneric/Pentron Incorporated Lithium disilicate glass-ceramics

Also Published As

Publication number Publication date
DE1421927A1 (en) 1968-12-12

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