SU546578A1 - Glass - Google Patents
GlassInfo
- Publication number
- SU546578A1 SU546578A1 SU1998880A SU1998880A SU546578A1 SU 546578 A1 SU546578 A1 SU 546578A1 SU 1998880 A SU1998880 A SU 1998880A SU 1998880 A SU1998880 A SU 1998880A SU 546578 A1 SU546578 A1 SU 546578A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- glass
- pipes
- hardening
- ion exchange
- introduction
- Prior art date
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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
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)
Description
Изобретение относитс к составам стекол, которые используютс при производстве изделий технического назначени , например, стекл нных труб, пробирок, колб.The invention relates to glass compositions that are used in the manufacture of articles of technical designation, for example glass tubes, test tubes, flasks.
Известно стекло, включающее: SiO2, , СаО, MgO, NasO, ВгОз, RaO 1.Known glass, including: SiO2, CaO, MgO, NasO, BrOz, RaO 1.
Оно используетс дл изготовлени изделий с повышенным коэффициентом линейного расширени и микротвердостью.It is used for the manufacture of products with a high coefficient of linear expansion and microhardness.
Однако издели из этого стекла обладают недостаточной химической устойчивостью и термостойкостью, что св зано с большим содержанием в стекле ш,елочей, в частности ионов К+ (NasO 1,0-15,4 и К2О 0,3-15,1). Кроме того, наличие ионов К+ снижает эффективность ионнообменного упрочнени , поскольку при упрочнении издели происходит замена иопов Na Б стекле на ион К из упрочн ющего расплава.However, the products made of this glass have insufficient chemical resistance and heat resistance, which is associated with a high content of glassware, particularly K + ions (NasO 1.0-15.4 and K2O 0.3-15.1) in glass. In addition, the presence of K + ions reduces the efficiency of ion exchange hardening, since the hardening of the product replaces Na B iops with K ion from the hardening melt.
Указанные выше недостатки, присущие известному стеклу, не позвол ют использовать его дл изготовлени стекл нных труб с последующим упрочнением их методом ионного обмена.The aforementioned disadvantages inherent in the known glass do not allow it to be used for the manufacture of glass tubes and their subsequent strengthening by the method of ion exchange.
Цель изобретени - получение стекла, обладающего повышенной термостойкостью, химической устойчивостью в механической промышленности .The purpose of the invention is to obtain glass with enhanced heat resistance, chemical resistance in the mechanical industry.
достигаетс тем, что в качестве R2O achieved by the fact that as R2O
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1998880A SU546578A1 (en) | 1974-02-20 | 1974-02-20 | Glass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1998880A SU546578A1 (en) | 1974-02-20 | 1974-02-20 | Glass |
Publications (1)
Publication Number | Publication Date |
---|---|
SU546578A1 true SU546578A1 (en) | 1977-02-15 |
Family
ID=20576647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1998880A SU546578A1 (en) | 1974-02-20 | 1974-02-20 | Glass |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU546578A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2468555A1 (en) * | 1979-11-02 | 1981-05-08 | Corning Glass Works | LASTS WITH SUSTAINABLE DETERGENT RESISTANCE |
-
1974
- 1974-02-20 SU SU1998880A patent/SU546578A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2468555A1 (en) * | 1979-11-02 | 1981-05-08 | Corning Glass Works | LASTS WITH SUSTAINABLE DETERGENT RESISTANCE |
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