GB1082064A - Process for treating glass - Google Patents
Process for treating glassInfo
- Publication number
- GB1082064A GB1082064A GB707565A GB707565A GB1082064A GB 1082064 A GB1082064 A GB 1082064A GB 707565 A GB707565 A GB 707565A GB 707565 A GB707565 A GB 707565A GB 1082064 A GB1082064 A GB 1082064A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- cation
- etched
- high vacuum
- etching
- 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
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
-
- 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
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
To strengthen glassware, the surface is first etched with an aqueous solution of one or more acid, the etched glass is then subjected to the action of high vacuum, i.e. at pressures less than 0.1 millimetres of mercury, and finally to a cation-exchange treatment whereby cations in the surface layers are replaced by cations that occupy a larger volume, The glass may also be etched in a further step after the high vacuum treatment and before the cation-exchange treatment, such etching removing a layer of about 10 microns as against removal of about 50 microns in the first etching. Etching is normally by HF alone or with H2SO4, the glass then being washed with distilled water and acetone. The high vacuum is maintained for about 1 hour when the glass is heated, for example to 300 DEG C. or for about 6 hours at room temperature. For soda/lime glass, the cation-exchange treatment is by molten KNO3 at about 430 DEG C. for 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB707565A GB1082064A (en) | 1965-02-18 | 1965-02-18 | Process for treating glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB707565A GB1082064A (en) | 1965-02-18 | 1965-02-18 | Process for treating glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1082064A true GB1082064A (en) | 1967-09-06 |
Family
ID=9826146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB707565A Expired GB1082064A (en) | 1965-02-18 | 1965-02-18 | Process for treating glass |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1082064A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3997312A (en) * | 1972-12-05 | 1976-12-14 | U.S. Philips Corporation | Method of manufacturing colored glass articles |
| US5414240A (en) * | 1988-12-27 | 1995-05-09 | Ppg Industries, Inc. | Electrically heatable transparency |
| CN103508674A (en) * | 2012-06-27 | 2014-01-15 | 成都光明光电股份有限公司 | Glass reinforcing method |
-
1965
- 1965-02-18 GB GB707565A patent/GB1082064A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3997312A (en) * | 1972-12-05 | 1976-12-14 | U.S. Philips Corporation | Method of manufacturing colored glass articles |
| US5414240A (en) * | 1988-12-27 | 1995-05-09 | Ppg Industries, Inc. | Electrically heatable transparency |
| CN103508674A (en) * | 2012-06-27 | 2014-01-15 | 成都光明光电股份有限公司 | Glass reinforcing method |
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