GB1193306A - Method of Strengthening Glass - Google Patents
Method of Strengthening GlassInfo
- Publication number
- GB1193306A GB1193306A GB2881067A GB2881067A GB1193306A GB 1193306 A GB1193306 A GB 1193306A GB 2881067 A GB2881067 A GB 2881067A GB 2881067 A GB2881067 A GB 2881067A GB 1193306 A GB1193306 A GB 1193306A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- layer
- fluorine
- cooled
- strain point
- 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
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
-
- 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
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
1,193,306. Strengthening glass chemically. BROCKWAY GLASS CO. Inc. 22 June, 1967, No. 22810/67. Heading C1M. A soda-lime glass body is strengthened by replacing O- - and/or OH- ions in the surfacelayer with F- ions, thus increasing the viscosity, and hence the strain point temperature, of the surface layer, and then cooling the body through both the surface-layer and the interior strain point temperatures. The surface-layer sets sooner than the interior glass and hence a compressive strain is produced in the surface-layer. The replacement may be achieved by contacting the body with a fluorine-containing gas or liquid, e.g. a fluorine-containing metal salt, e.g. a fluoride or fluoroborate of Sn, Pb, Zn or Ti; the contact may be at above the strain point temperature of the glass. In an example glass tubes at 1200‹ F. are sprayed with a fluorinecontaining salt solution for 20 seconds and the glass is refired at 1200‹ F. and cooled. The glass may be cooled slowly under annealing conditions; or it may be cooled more rapidly so as to produce conventional thermal tempering in addition to the surface-viscosity change effect of the present invention. The fluorine-contact may also be performed slowly or intermittently.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6708670A NL6708670A (en) | 1967-06-21 | 1967-06-21 | |
| GB2881067A GB1193306A (en) | 1967-06-21 | 1967-06-22 | Method of Strengthening Glass |
| FR112293A FR1536310A (en) | 1967-06-21 | 1967-06-28 | Method of strengthening glass objects |
| DE19671596741 DE1596741A1 (en) | 1967-06-21 | 1967-07-10 | Process for increasing the strength of a glass body |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6708670A NL6708670A (en) | 1967-06-21 | 1967-06-21 | |
| GB2881067A GB1193306A (en) | 1967-06-21 | 1967-06-22 | Method of Strengthening Glass |
| DEB0093406 | 1967-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1193306A true GB1193306A (en) | 1970-05-28 |
Family
ID=27209426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2881067A Expired GB1193306A (en) | 1967-06-21 | 1967-06-22 | Method of Strengthening Glass |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1596741A1 (en) |
| GB (1) | GB1193306A (en) |
| NL (1) | NL6708670A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2322855A (en) * | 1997-03-03 | 1998-09-09 | British Tech Group | Introducing fluoride ions into glass |
-
1967
- 1967-06-21 NL NL6708670A patent/NL6708670A/xx unknown
- 1967-06-22 GB GB2881067A patent/GB1193306A/en not_active Expired
- 1967-07-10 DE DE19671596741 patent/DE1596741A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2322855A (en) * | 1997-03-03 | 1998-09-09 | British Tech Group | Introducing fluoride ions into glass |
| WO1998039263A1 (en) * | 1997-03-03 | 1998-09-11 | Btg International Limited | Introducing fluoride ions into glass particles |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6708670A (en) | 1968-12-23 |
| DE1596741A1 (en) | 1971-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |