SU530015A1 - Charge for making transparent spinel - Google Patents
Charge for making transparent spinelInfo
- Publication number
- SU530015A1 SU530015A1 SU2183322A SU2183322A SU530015A1 SU 530015 A1 SU530015 A1 SU 530015A1 SU 2183322 A SU2183322 A SU 2183322A SU 2183322 A SU2183322 A SU 2183322A SU 530015 A1 SU530015 A1 SU 530015A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- charge
- magnesia
- oxide
- aluminum
- transparent spinel
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
1one
Изобретение относитс к составу шихты дл изготовлени прозрачной шпинели и может быть использованно при создании новых светильников - ламп высокого давлени , оптических приборов, работающих при высо- ких температурах , в услови х вакуума.The invention relates to the composition of the charge for the manufacture of transparent spinel and can be used to create new luminaires — high pressure lamps, optical devices operating at high temperatures, under vacuum conditions.
Известна шихта дл изготовлени прозрачной шпинели, включающа окись алюмини и окись магни .A known charge for making transparent spinel, including alumina and magnesia.
Наиболее близкой вл етс шихта дл иэготовлени прозрачной шпинели, включающа окись алюмини , окись магни и алюминиевую пудру.The closest is the batch for the preparation of transparent spinel, including alumina, magnesia and aluminum powder.
Однако указанные составы шихт имеют невысокие значени светопропуекани в видимой области спектра.However, these compositions of the charge have low values of light transmission in the visible region of the spectrum.
Целью из обретени вл етс повышение светопропускани шпинели в видимой области спектра до 92-94%.The goal of the acquisition is to increase the light transmission of spinel in the visible region of the spectrum to 92-94%.
Это достигаетс тем, что шихта, содержаща окись aлю2vlини , окись магни и алюминиевую пудру, дополнительно содержит фтористый кальций при следующем соотношении компонентов, вес. %;This is achieved by the fact that the mixture containing oxide al2vlini, magnesium oxide and aluminum powder, additionally contains calcium fluoride in the following ratio of components, weight. %;
Окись алюмини ОсноваAluminum Oxide Base
Окись магни 27,4 - 29Magnesia oxide 27.4 - 29
Алюминиева пудра1-4Aluminum Powder1-4
Фтористый кальций0,4 - 0,9Calcium fluoride0.4 - 0.9
Технологи изготовлени прозрачной шпинели состоит в следующем.The technology of making transparent spinel is as follows.
Шихту составл ют из окисей алюмини и магни ( или углекислой соли магни ) высокой степени чистоты в количестве 66,8 и 28,7 вес.% соответственно, к которым добавл ют 4 вес% алюминиевой пудры и 0,5 вес. % фтористого кальци . После перемешивани шихту обжигаютпри 140О-1600°С полученный спек размалывают в вибромельнице до размера частиц 1-3 мкм.The mixture is composed of high purity oxides of aluminum and magnesium (or carbonate of magnesium) in an amount of 66.8 and 28.7 wt.%, Respectively, to which 4 wt.% Of aluminum powder and 0.5 wt. % calcium fluoride. After mixing, the mixture is burned at 140 ° -1600 ° C. The obtained sintered grind in a vibrating mill to a particle size of 1-3 µm.
Издели оформл ют гор чим литьем под давлением из термопластичных шликеров, содержащих, % Л1-15 парафина, 1 воска и 1 олеиновой кислоты. Отливку производ т при 70-80 С и давлении 3-5 атм. Органическую св зку удал ют в процессе предварительного обжига изделий при температуре 11ОО-1200 С в засыпке глинозема.The products are molded by hot casting under pressure from thermoplastic slips containing% L1-15 paraffin, 1 wax and 1 oleic acid. Casting is carried out at 70-80 ° C and a pressure of 3-5 atm. The organic binder is removed during the pre-stage calcination process at a temperature of 11OO-1200 ° C in alumina bed.
Окончательно обжигают издели в вакууме или среде водорода при 1750-1880 С 3 р выдержкой при конечной температуре час, 2-6Состав и свойства шпинели приведены 5300154 в таблице.The products are finally burned in vacuum or hydrogen at 1750–1880 C 3 r by exposure at final temperature for an hour, 2–6. Composition and properties of spinel are given in 5300154 in the table.
Окись алюмини 66,8Aluminum oxide 66.8
28,728.7
Окись магни Magnesia oxide
3,573.57
Алюминиева пудра 4Aluminum powder 4
Фтористый кальций 0,5Calcium fluoride 0.5
6767
Окись алюмини Aluminum oxide
Окись магни Magnesia oxide
28,928.9
3,23.2
3,563.56
Алюминиева пудраAluminum powder
Фтористый кальций0,9Calcium fluoride0,9
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2183322A SU530015A1 (en) | 1975-10-24 | 1975-10-24 | Charge for making transparent spinel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2183322A SU530015A1 (en) | 1975-10-24 | 1975-10-24 | Charge for making transparent spinel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU530015A1 true SU530015A1 (en) | 1976-09-30 |
Family
ID=20635325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2183322A SU530015A1 (en) | 1975-10-24 | 1975-10-24 | Charge for making transparent spinel |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU530015A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2932789A1 (en) * | 1978-08-14 | 1980-03-06 | Ngk Insulators Ltd | POLYCRYSTALLINE TRANSPARENT SPINEL INTERMEDIATORS AND METHOD FOR THE PRODUCTION THEREOF |
| GB2283236A (en) * | 1993-10-29 | 1995-05-03 | Programme 3 Patent Holdings | Making a magnesium aluminium spinel |
| CN106414367A (en) * | 2014-05-27 | 2017-02-15 | 弗劳恩霍夫应用研究促进协会 | Transparent spinel ceramics and methods for the production thereof |
-
1975
- 1975-10-24 SU SU2183322A patent/SU530015A1/en active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2932789A1 (en) * | 1978-08-14 | 1980-03-06 | Ngk Insulators Ltd | POLYCRYSTALLINE TRANSPARENT SPINEL INTERMEDIATORS AND METHOD FOR THE PRODUCTION THEREOF |
| DE2932789C2 (en) | 1978-08-14 | 1982-07-15 | NGK Insulators Ltd., Nagoya, Aichi | Polycrystalline transparent spinel sintered bodies and process for their manufacture |
| GB2283236A (en) * | 1993-10-29 | 1995-05-03 | Programme 3 Patent Holdings | Making a magnesium aluminium spinel |
| US5525561A (en) * | 1993-10-29 | 1996-06-11 | Programme 3 Patent Holdings | Method of making spinel compounds |
| CN106414367A (en) * | 2014-05-27 | 2017-02-15 | 弗劳恩霍夫应用研究促进协会 | Transparent spinel ceramics and methods for the production thereof |
| CN106414367B (en) * | 2014-05-27 | 2019-09-27 | 弗劳恩霍夫应用研究促进协会 | Transparent spinel ceramics and its manufacturing method |
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