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GB955653A - Improvements in or relating to devitrified glass-ceramics and their production - Google Patents

Improvements in or relating to devitrified glass-ceramics and their production

Info

Publication number
GB955653A
GB955653A GB873859A GB873859A GB955653A GB 955653 A GB955653 A GB 955653A GB 873859 A GB873859 A GB 873859A GB 873859 A GB873859 A GB 873859A GB 955653 A GB955653 A GB 955653A
Authority
GB
United Kingdom
Prior art keywords
glass
ceramics
relating
production
devitrified glass
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
GB873859A
Inventor
Peter William Mcmillan
Graham Partridge
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.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
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
Priority to NL293370D priority Critical patent/NL293370A/xx
Priority to BE633150D priority patent/BE633150A/xx
Application filed by English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB873859A priority patent/GB955653A/en
Priority to FR936583A priority patent/FR1363513A/en
Publication of GB955653A publication Critical patent/GB955653A/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
    • C03C10/0036—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 a divalent metal oxide as main constituents
    • C03C10/0045—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 a divalent metal oxide as main constituents containing SiO2, Al2O3 and MgO as main constituents
    • 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
    • C03C10/0009—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 silica as main constituent
    • 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

To make a ceramic-glass article by heat treatment of a formed glass capable of controlled vitrification, the glass is made from a batch containing a fluoride in an amount to give in the finished product a weight of fluorine of 0.5 to 2.5% to serve as a nucleating agent. The anions are introduced as a metallic fluoride, preferably one whose oxide forms a major constituent of the glass batch. The glasses used are those disclosed in Specifications 752,243 and 924,996.
GB873859A 1959-03-13 1959-03-13 Improvements in or relating to devitrified glass-ceramics and their production Expired GB955653A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL293370D NL293370A (en) 1959-03-13
BE633150D BE633150A (en) 1959-03-13
GB873859A GB955653A (en) 1959-03-13 1959-03-13 Improvements in or relating to devitrified glass-ceramics and their production
FR936583A FR1363513A (en) 1959-03-13 1963-05-30 Ceramic products and manufacturing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB873859A GB955653A (en) 1959-03-13 1959-03-13 Improvements in or relating to devitrified glass-ceramics and their production

Publications (1)

Publication Number Publication Date
GB955653A true GB955653A (en) 1964-04-15

Family

ID=9858319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB873859A Expired GB955653A (en) 1959-03-13 1959-03-13 Improvements in or relating to devitrified glass-ceramics and their production

Country Status (3)

Country Link
BE (1) BE633150A (en)
GB (1) GB955653A (en)
NL (1) NL293370A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320792A (en) * 1993-05-11 1994-06-14 National Science Council Process for the preparation of LAS ceramic sintered bodies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320792A (en) * 1993-05-11 1994-06-14 National Science Council Process for the preparation of LAS ceramic sintered bodies

Also Published As

Publication number Publication date
BE633150A (en) 1963-10-21
NL293370A (en)

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