GB1119049A - Improvements relating to methods of manufacturing strengthened glass articles - Google Patents

Improvements relating to methods of manufacturing strengthened glass articles

Info

Publication number
GB1119049A
GB1119049A GB4239365A GB4239365A GB1119049A GB 1119049 A GB1119049 A GB 1119049A GB 4239365 A GB4239365 A GB 4239365A GB 4239365 A GB4239365 A GB 4239365A GB 1119049 A GB1119049 A GB 1119049A
Authority
GB
United Kingdom
Prior art keywords
mgo
glass articles
methods
strengthened glass
improvements relating
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
GB4239365A
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 GB1119049A publication Critical patent/GB1119049A/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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/078—Glass compositions containing silica with 40% to 90% silica, by weight containing an oxide of a divalent metal, e.g. an oxide of zinc
    • 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
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal

Landscapes

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

Abstract

Glass articles are strengthened by contacting them at a temperature of at least 75 DEG C. below annealing temperature, e.g. at 400-450 DEG C., with a molten mass containing potassium ions, the glass having one of the following percentage compositions by weight, modified, if desired, by the replacement of up to 5 mol. per cent of MgO by an equimolecular amount of Al2O3, viz.: (a) SiO2 70-81, MgO 7.5-12, Na2O 11.5-18.5, the ratio Na2O : MgO being 1.18-1.84; (b) SiO2 61-67, MgO 12-17, Na2O 19-25. Reference has been directed by the Comptroller to Specification 917,388.
GB4239365A 1964-10-09 1965-10-06 Improvements relating to methods of manufacturing strengthened glass articles Expired GB1119049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6411735A NL6411735A (en) 1964-10-09 1964-10-09

Publications (1)

Publication Number Publication Date
GB1119049A true GB1119049A (en) 1968-07-03

Family

ID=19791197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4239365A Expired GB1119049A (en) 1964-10-09 1965-10-06 Improvements relating to methods of manufacturing strengthened glass articles

Country Status (7)

Country Link
AT (2) AT259154B (en)
BE (1) BE670726A (en)
CH (1) CH476648A (en)
DE (1) DE1496595A1 (en)
FR (1) FR1449428A (en)
GB (1) GB1119049A (en)
NL (1) NL6411735A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110228951B (en) * 2019-06-10 2023-07-25 成都恒达光学有限公司 Sulfur infrared optical glass secondary pressing process

Also Published As

Publication number Publication date
NL6411735A (en) 1966-04-12
AT259154B (en) 1968-01-10
BE670726A (en) 1966-04-08
CH476648A (en) 1969-08-15
FR1449428A (en) 1966-08-12
AT259155B (en) 1968-01-10
DE1496595A1 (en) 1969-07-10

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