GB1375097A - - Google Patents

Info

Publication number
GB1375097A
GB1375097A GB550572A GB550572A GB1375097A GB 1375097 A GB1375097 A GB 1375097A GB 550572 A GB550572 A GB 550572A GB 550572 A GB550572 A GB 550572A GB 1375097 A GB1375097 A GB 1375097A
Authority
GB
United Kingdom
Prior art keywords
glass
temperature
zro
tio
feb
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
GB550572A
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 filed Critical
Publication of GB1375097A publication Critical patent/GB1375097A/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
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
    • 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

Landscapes

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

Abstract

1375097 Strengthening glass-ceramics OWENS-ILLINOIS Inc 7 Feb 1972 [8 Feb 1971] 5505/72 Heading C1M A glass-ceramic article having a modulus of rupture of over 85,000 p.s.i. is obtained by contacting the surface of a lithium-containing glass ceramic at an elevated temperature with an ion-exchange material containing alkali metals having a larger ionic radius than the lithium ions. The glass ceramic comprises in percentage by weight SiO 2 60-75; Al 2 O 3 15-30; Si 2 O 3-5À5; F 2 0À2-0À8; Na 2 O+K 2 O 0-2; and TiO 2 +ZrO 2 2À5-10 wherein TiO 2 and ZrO 2 are present together and wherein the molar ratio R 2 O+RO : Al 2 O 3 is 0À95 to 0À5 where R 2 O is the total alkali metal oxide content and RO the total content of alkaline earth metal oxides plus zinc oxide. The glass ceramic is prepared by heating a thermally crystallizable glass at a temperature of 1800‹ to 2200‹ F. The ionexchange is carried out at a temperature of from 750‹ to 1000‹ F. for a period of ¢ to 8 hours. The ion-exchange material is preferably a molten salt such as sodium or potassium nitrate. Reference has been directed by the Comptroller to Specification 1,105,434.
GB550572A 1971-02-08 1972-02-07 Expired GB1375097A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11367671A 1971-02-08 1971-02-08

Publications (1)

Publication Number Publication Date
GB1375097A true GB1375097A (en) 1974-11-27

Family

ID=22350848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB550572A Expired GB1375097A (en) 1971-02-08 1972-02-07

Country Status (5)

Country Link
CA (1) CA989617A (en)
DE (1) DE2203675A1 (en)
FR (1) FR2124581B1 (en)
GB (1) GB1375097A (en)
IT (1) IT948445B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1236695A3 (en) * 2001-03-02 2002-11-27 Schott Glas Glass ceramics
US8043706B2 (en) 2007-04-06 2011-10-25 Ohara Inc. Inorganic composition article

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1439341A (en) * 1964-05-05 1966-05-20 Corning Glass Works Glass ceramic object, reinforced on its surface by ion exchange

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1236695A3 (en) * 2001-03-02 2002-11-27 Schott Glas Glass ceramics
US6673729B2 (en) 2001-03-02 2004-01-06 Schott Glas Glass ceramic
US8043706B2 (en) 2007-04-06 2011-10-25 Ohara Inc. Inorganic composition article

Also Published As

Publication number Publication date
FR2124581A1 (en) 1972-09-22
IT948445B (en) 1973-05-30
CA989617A (en) 1976-05-25
FR2124581B1 (en) 1976-06-11
DE2203675A1 (en) 1972-08-24

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Legal Events

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