GB1357194A - Process for the strengthening of glass objects - Google Patents

Process for the strengthening of glass objects

Info

Publication number
GB1357194A
GB1357194A GB3446771A GB3446771A GB1357194A GB 1357194 A GB1357194 A GB 1357194A GB 3446771 A GB3446771 A GB 3446771A GB 3446771 A GB3446771 A GB 3446771A GB 1357194 A GB1357194 A GB 1357194A
Authority
GB
United Kingdom
Prior art keywords
potassium
sodium
examples
ion source
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
GB3446771A
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.)
TECHNISCHES GLAS VEB K
Original Assignee
TECHNISCHES GLAS VEB K
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 DD15203970A priority Critical patent/DD88841A1/xx
Application filed by TECHNISCHES GLAS VEB K filed Critical TECHNISCHES GLAS VEB K
Priority to GB3446771A priority patent/GB1357194A/en
Priority to DE19712159039 priority patent/DE2159039A1/en
Priority to SU1726216A priority patent/SU495289A1/en
Priority to CS8646A priority patent/CS176396B1/cs
Priority to HUTE626A priority patent/HU164692B/hu
Priority to FR7144915A priority patent/FR2118085B1/fr
Publication of GB1357194A publication Critical patent/GB1357194A/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
    • C03C21/003—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 under application of an electrical potential difference

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)
  • Surface Treatment Of Glass (AREA)

Abstract

1357194 Strengthening glass KOMBINAT TECHNISCHES GLAS ILMENAU VEB 22 July 1971 34467/71 Heading C1M Glass is strengthened by exchange of alkali metal ions from surface regions by larger alkali metal ions from an ion source at temperatures at or below the transformation point of the glass and in an electric field, at least the cathode space of the ion source containing a compound selected from potassium bifluoride; potassium fluoride; sodium fluoride; potassium boron trifluoride; sodium boron trifluoride or fine potassium dihydrogen phosphate; sodium dihydrogen phosphate; potassium metaphosphate; sodium metaphosphate and potassium hydrogen sulphate. The preferred ion source is a fused potassium nitrate bath and the concentration of the added compound is between 0À25 and 7À5% by weight. In examples, vessels and tubes of glasses within the following ranges in percentages by weight were treated: SiO 2 75À6-80À9; B 2 O 3 7-12À4; Al 2 O 3 2À3-5À1; BaO 0 or 3À7; CaO 0À2-1À2; MgO 0 or 0À1; K 2 O 0-1À2; Na 2 O 3À5-6À3. In one of the examples the passage of current was without reverse of polarity but in two examples, the polarity was reversed.
GB3446771A 1970-12-14 1971-07-22 Process for the strengthening of glass objects Expired GB1357194A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DD15203970A DD88841A1 (en) 1970-12-14 1970-12-14
GB3446771A GB1357194A (en) 1970-12-14 1971-07-22 Process for the strengthening of glass objects
DE19712159039 DE2159039A1 (en) 1970-12-14 1971-11-29 Process for the solidification of objects made of glass without clouding the surface
SU1726216A SU495289A1 (en) 1970-12-14 1971-12-13 The method of strengthening glass products
CS8646A CS176396B1 (en) 1970-12-14 1971-12-13
HUTE626A HU164692B (en) 1970-12-14 1971-12-13
FR7144915A FR2118085B1 (en) 1970-12-14 1971-12-14

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD15203970A DD88841A1 (en) 1970-12-14 1970-12-14
GB3446771A GB1357194A (en) 1970-12-14 1971-07-22 Process for the strengthening of glass objects

Publications (1)

Publication Number Publication Date
GB1357194A true GB1357194A (en) 1974-06-19

Family

ID=25747365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3446771A Expired GB1357194A (en) 1970-12-14 1971-07-22 Process for the strengthening of glass objects

Country Status (7)

Country Link
CS (1) CS176396B1 (en)
DD (1) DD88841A1 (en)
DE (1) DE2159039A1 (en)
FR (1) FR2118085B1 (en)
GB (1) GB1357194A (en)
HU (1) HU164692B (en)
SU (1) SU495289A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171990A (en) * 1985-03-08 1986-09-10 Central Glass Co Ltd Method of strengthening glass article formed of float glass by ion exchange and strengthened glass article
GB2329382A (en) * 1997-09-23 1999-03-24 Glaverbel Chemical treatment of vitreous material
WO2015153733A1 (en) * 2014-04-02 2015-10-08 Corning Incorporated Electrochemical methods for chemical strengthening of glass and glass ceramics

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171990A (en) * 1985-03-08 1986-09-10 Central Glass Co Ltd Method of strengthening glass article formed of float glass by ion exchange and strengthened glass article
GB2329382A (en) * 1997-09-23 1999-03-24 Glaverbel Chemical treatment of vitreous material
WO2015153733A1 (en) * 2014-04-02 2015-10-08 Corning Incorporated Electrochemical methods for chemical strengthening of glass and glass ceramics

Also Published As

Publication number Publication date
CS176396B1 (en) 1977-06-30
DD88841A1 (en) 1972-03-20
FR2118085A1 (en) 1972-07-28
HU164692B (en) 1974-03-28
FR2118085B1 (en) 1974-06-07
SU495289A1 (en) 1975-12-15
DE2159039A1 (en) 1972-06-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees