GB1069227A - Improvements relating to methods of strengthening glass objects - Google Patents

Improvements relating to methods of strengthening glass objects

Info

Publication number
GB1069227A
GB1069227A GB48117/65A GB4811765A GB1069227A GB 1069227 A GB1069227 A GB 1069227A GB 48117/65 A GB48117/65 A GB 48117/65A GB 4811765 A GB4811765 A GB 4811765A GB 1069227 A GB1069227 A GB 1069227A
Authority
GB
United Kingdom
Prior art keywords
methods
improvements relating
strengthening glass
glass objects
surface layer
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
GB48117/65A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1069227A publication Critical patent/GB1069227A/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)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Surface Treatment Of Glass (AREA)
  • Food-Manufacturing Devices (AREA)
  • Preparation Of Fruits And Vegetables (AREA)

Abstract

A glass object having a vitreous-crystalline surface layer under compressive stress is made by heating a glass object at 650-750 DEG C. and then at 800-950 DEG C. The glass has composition, in weight per cent: SiO2, 50-70; Al2O3, 20-38; Li2O, 5-10; MgO, 0-5; Na2O, 0-0.3; P2O5, 0.2-3; ZrO2, 0.5-2.5. The surface layer may be 70-120m thick, and is substantially transparent.
GB48117/65A 1964-11-17 1965-11-12 Improvements relating to methods of strengthening glass objects Expired GB1069227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6413342A NL6413342A (en) 1964-11-17 1964-11-17

Publications (1)

Publication Number Publication Date
GB1069227A true GB1069227A (en) 1967-05-17

Family

ID=19791458

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48117/65A Expired GB1069227A (en) 1964-11-17 1965-11-12 Improvements relating to methods of strengthening glass objects

Country Status (9)

Country Link
AT (1) AT259787B (en)
BE (1) BE672365A (en)
CH (1) CH471751A (en)
DE (1) DE1496596A1 (en)
ES (1) ES319577A1 (en)
FR (1) FR1453718A (en)
GB (1) GB1069227A (en)
NL (1) NL6413342A (en)
NO (1) NO116101B (en)

Also Published As

Publication number Publication date
NO116101B (en) 1969-01-27
DE1496596A1 (en) 1969-07-03
ES319577A1 (en) 1966-01-16
BE672365A (en)
FR1453718A (en) 1966-06-03
AT259787B (en) 1968-02-12
CH471751A (en) 1969-04-30
NL6413342A (en) 1966-05-18

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