SU695979A1 - Glass - Google Patents
GlassInfo
- Publication number
- SU695979A1 SU695979A1 SU782565092A SU2565092A SU695979A1 SU 695979 A1 SU695979 A1 SU 695979A1 SU 782565092 A SU782565092 A SU 782565092A SU 2565092 A SU2565092 A SU 2565092A SU 695979 A1 SU695979 A1 SU 695979A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- glass
- cao
- coefficient
- limits
- dilatometric
- 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
(54) СТЕЮЮ(54) STATE
Изобретение относитс к стекламр примен емым в качестве промежуточнык при спа х кварцевого стекла с вольфра мом и молибденом. Известно стекло следующего состава , вес.% SiO260-85; ACgOa BgOg 0-18; Na,2,O 0-16 К2.О 0-5 Li 0-3 CaO 5gO 0-25; ce 0 1,5MoO 0,1-5 1 . Это стекло требует осо.бых услови варки. Наличие в нем таких окислов, как МоО, ограничивает возможность применени электросварки . дл данног состава, а также ввиду низкой дилатометрическ-ой температуры стекловани ограничивает его использование дл производства мс цных изделий электронной и электротехнической промышленности. Наиболее близким к изобретению по технической сущности и достигаемому результату вл етс стекло сле дующего состава, вес.%: SiO271,5-90 2-12; АЕ,ОЗ 0-2; BjiOj 3-22,5; Na О 0-5. Стекло может также содержать СаО 2J. Однако указанное стекло обладает довольно высоким коэффициентом термического расширени . Целью изобретени вл етс обеспечение коэффициента линейного терьмческого расширени в пределах (18-24)10-1/град,К. Эта цель достигаетс тем, что стекло, включающее SiO, АЕ-О,, ByOg, , СаО, дополнительно содержит К.О при следующем соотношении компонентов, вес.%г 310 85-88; Aej.03 4-5; 7-8 NagO 0,1-0,5; 0,1-0,5; СаО 0,01-1. В табл. 1 приведены конкретные примеры составов стекол. Эти составы имеют следующие свойства (табл.2). Как видно из таблицы, величина дилатометрических температур стекловани значительно превышает те же величины у известных стекал. Это позвол ет увеличить рабочую температуру изделий из этих составов стекол на 100-150°С, благодар чему возможно создать более высокоинз енсиеные источники света по сравнению с существующими. Стекла-можно синтезировать в электропечах гарнисажного типа.The invention relates to glass windows used as intermediates at the junctions of quartz glass with tungsten and molybdenum. Known glass of the following composition, wt.% SiO260-85; ACgOa BgOg 0-18; Na, 2, O 0-16 K2.O 0-5 Li 0-3 CaO 5gO 0-25; ce 0 1,5MoO 0.1-5 1. This glass requires special cooking conditions. The presence of oxides such as MoO in it limits the possibility of using electric welding. for this composition, as well as due to the low dilatometric glass transition temperature, it limits its use for the manufacture of electronic products and the electrical industry. The closest to the invention in technical essence and the achieved result is the glass of the following composition, wt.%: SiO271.5-90 2-12; AE, OZ 0-2; BjiOj 3-22.5; Na O 0-5. Glass may also contain CaO 2J. However, this glass has a rather high thermal expansion coefficient. The aim of the invention is to provide a coefficient of linear tertiary expansion within (18-24) 10-1 / deg, K. This goal is achieved by the fact that glass, including SiO, AE-O, ByOg,, CaO, additionally contains K.O. in the following ratio of components, wt.% G 310 85-88; Aej.03 4-5; 7-8 NagO 0.1-0.5; 0.1-0.5; CaO 0.01-1. In tab. 1 shows specific examples of glass compositions. These compounds have the following properties (table 2). As can be seen from the table, the magnitude of dilatometric glass transition temperatures significantly exceeds the same values as those of known drains. This makes it possible to increase the working temperature of products made from these glass compositions by 100–150 ° C, due to which it is possible to create more highly efficient light sources than the existing ones. Glasses can be synthesized in skull-type electric furnaces.
6959794 J.IX« f --- --л,-. .В .О,, Na,0, CaO, о т л и ч a ю щ 1ем, что, с целью обеспечени коэффициента линейного термичес кого рас ирени в пределах (18-2 4 )д «10 1/грал.К,, оно дополнительно содержит при следующем соотношении компонентов, вес.%: SiOi85-88 м,0з. 4-56959794 J.IX “f --- --l, -. .B.O., Na, 0, CaO, O tl and h ai y i 1, that, in order to ensure the coefficient of linear thermal dissipation within (18-2 4) , it additionally contains the following ratio of components, wt.%: SiOi85-88 m, 0h. 4-5
Таблица 1Table 1
Таблица 2 0,05-0,50 ,01-1,0 0,05-0,5 Источники информации, прин тые во внимание при экспертизе 1.Патент США № 3499775, кл. 106-47, 1970. 2.Патент ЧССР 23641, кл. 32 В 3/08,-1927.Table 2 0.05-0.50, 01-1.0 0.05-0.5 Sources of information taken into account in the examination 1. US patent number 3499775, cl. 106-47, 1970. 2. Patent Czechoslovakia 23641, cl. 32B 3/8, -1927.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782565092A SU695979A1 (en) | 1978-01-06 | 1978-01-06 | Glass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782565092A SU695979A1 (en) | 1978-01-06 | 1978-01-06 | Glass |
Publications (1)
Publication Number | Publication Date |
---|---|
SU695979A1 true SU695979A1 (en) | 1979-11-05 |
Family
ID=20742487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782565092A SU695979A1 (en) | 1978-01-06 | 1978-01-06 | Glass |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU695979A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1524243A1 (en) * | 2003-10-14 | 2005-04-20 | Schott AG | Apparatus and method for making high-melting glasses and glass ceramics as well as the glasses or glass ceramics |
US7148164B2 (en) * | 2000-07-07 | 2006-12-12 | Kabushiki Kaisha Ohara | Low expansion transparent glass-ceramics, glass-ceramic substrate and optical waveguide element |
-
1978
- 1978-01-06 SU SU782565092A patent/SU695979A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7148164B2 (en) * | 2000-07-07 | 2006-12-12 | Kabushiki Kaisha Ohara | Low expansion transparent glass-ceramics, glass-ceramic substrate and optical waveguide element |
EP1524243A1 (en) * | 2003-10-14 | 2005-04-20 | Schott AG | Apparatus and method for making high-melting glasses and glass ceramics as well as the glasses or glass ceramics |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0867529A (en) | Borosilicate glass low in boric acid and application thereof | |
PL348410A1 (en) | Semitranslucent vitreoceramic material, method of obtaining such material, application thereof and products made of such vitreoceramic material | |
SE418961B (en) | FIBER GLASS FIXED SEEN NING | |
JP7004490B2 (en) | Clear LAS glass ceramic manufactured with an environmentally acceptable alternative fining agent | |
JPS60171244A (en) | Optical glass | |
CN1131130A (en) | Colorless ophthalmic glasses | |
US2961328A (en) | Refractory glass composition | |
US4127415A (en) | Aluminum borophosphate glass compositions | |
CA1250322A (en) | Glass-ceramics suitable for ring laser gyros | |
GB2134100A (en) | Glass for a photomask | |
EP0048120A1 (en) | Glass envelopes for tungsten-halogen lamps and production thereof | |
US4177319A (en) | Glass for the production of optical elements with refractive index gradients | |
SU695979A1 (en) | Glass | |
US2100391A (en) | Vitreous compositions or glasses | |
US2382056A (en) | Glass transparent to far ultraviolet | |
JPS61281041A (en) | Alkali-free glass | |
JPH01239037A (en) | Glass for fluorescent lamp | |
US3677785A (en) | Transparent crystallized glass | |
SU975618A1 (en) | Glass | |
JPH0431335A (en) | Panel glass of cathode ray tube | |
JPH0474731A (en) | Borosilicate glass medical use | |
JPS62288134A (en) | Panel glass for cathode-ray tube | |
SU1527199A1 (en) | Glass composition | |
JPH06157067A (en) | Ultraviolet transmitting glass | |
JPS6252140A (en) | Opal glass composition showing opal color |