SU431701A1 - Method for producing crystals based on stabilized zirconium or hafnium dioxide - Google Patents
Method for producing crystals based on stabilized zirconium or hafnium dioxide Download PDFInfo
- Publication number
- SU431701A1 SU431701A1 SU711708067A SU1708067A SU431701A1 SU 431701 A1 SU431701 A1 SU 431701A1 SU 711708067 A SU711708067 A SU 711708067A SU 1708067 A SU1708067 A SU 1708067A SU 431701 A1 SU431701 A1 SU 431701A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- stabilized zirconium
- crystals based
- producing crystals
- hafnium dioxide
- crystals
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Ceramic Products (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
Изобретение относится к способу получения кристаллов для производства драгоценных камней, в частности кристаллов на основе стабилизированной двуокиси циркония или гафния. 5The invention relates to a method for producing crystals for the production of precious stones, in particular crystals based on stabilized zirconium dioxide or hafnium. five
Известен способ получения монокристаллов на основе циркония или гафния выращиванием из расплава с введением стабилизирующей добавки, например СаО. Полученные камни имеют невысокий показа- ю тель преломления (н=1,7).A method of obtaining single crystals based on zirconium or hafnium by growing from the melt with the introduction of a stabilizing additive, such as CaO. The stones obtained have a low refractive index (n = 1.7).
С целью получения кристаллов с высоким показателем преломления предложено в качестве стабилизирующей добавки использовать окись иттрия. 15In order to obtain crystals with a high refractive index, it has been proposed to use yttrium oxide as a stabilizing additive. 15
Для получения окрашенных камней в расплав вводят добавки ионов переходных и редкоземельных металлов.To obtain colored stones, additives of transition and rare-earth metal ions are introduced into the melt.
Стабилизатор У20з вводят в количестве 10—30 мол. %; основа (ΖγΟ2 или ΗίΟ2) 20 составляет 70—90%. Ионы окрашивающих добавок берут в следующем процентном соотношении.Stabilizer At 2 0z injected in an amount of 10-30 mol. %; the basis (ΖγΟ 2 or ΗίΟ 2 ) 20 is 70–90%. Ions coloring additives take the following percentage.
Пример. По предложенному способу кристаллы на основе 2гО2 получают мето- 25 дом опускающегося тигля. Процесс проводят в охлаждаемом контейнере с непосредственным подводом к расплаву энергии высокочастотного поля. Скорость выращивания кристаллов 25—30 мм/ч, перегрев рас- 30Example. According to the proposed method, crystals based on 2gO 2 are obtained by the method of a descending crucible. The process is carried out in a cooled container with a direct supply of high-frequency field energy to the melt. The crystal growth rate is 25–30 mm / h, the overheating of the 30
22
плава 50—100°С. Аналогично получают кристаллы на основе НЮ2 с показателем преломления 2,1-2,2. Микротвердость, измеренная на приборе ПМТ-3, равна 13000— 14000 мн/'м2.melt 50-100 ° C. Similarly, get crystals based on HU 2 with a refractive index of 2.1-2.2. The microhardness, measured on a PMT-3 device, is 13000– 14000 mn / m 2 .
431701431701
33
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU711708067A SU431701A1 (en) | 1971-10-25 | 1971-10-25 | Method for producing crystals based on stabilized zirconium or hafnium dioxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU711708067A SU431701A1 (en) | 1971-10-25 | 1971-10-25 | Method for producing crystals based on stabilized zirconium or hafnium dioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
SU431701A1 true SU431701A1 (en) | 1982-08-30 |
Family
ID=20491101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU711708067A SU431701A1 (en) | 1971-10-25 | 1971-10-25 | Method for producing crystals based on stabilized zirconium or hafnium dioxide |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU431701A1 (en) |
-
1971
- 1971-10-25 SU SU711708067A patent/SU431701A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4153469A (en) | Monocrystals based on stabilized zirconium or hafnium dioxide and method of production thereof | |
Kirk | The luminescence and tenebrescence of natural and synthetic sodalite | |
US3984524A (en) | Single crystals based on stabilized zirconium dioxide or hafniun dioxide | |
SU431701A1 (en) | Method for producing crystals based on stabilized zirconium or hafnium dioxide | |
US3912521A (en) | Synthetic crystal and method of making same | |
US4935934A (en) | Mixed lanthanide-magnesium gallates and laser using monocrystals of these gallates | |
Maeda et al. | The Photochromism, Thermochromism, and Piezochromism of Dimers of Tetraphenylpyrryl | |
US2438335A (en) | Method of making ceramic stains | |
US4525460A (en) | Single-crystal material based on aluminium garnets | |
Maeda et al. | The spectra of the chemiluminescence, fluorescence and absorption of lucigenin and its electron spin resonance | |
US4543342A (en) | Single-crystalline jewelry material based on aluminium garnets | |
DE2501799A1 (en) | Single crystals of zirconium or hafnium dioxides - stabilised with yttria to obtain high microhardness for jewellery or optics | |
Petrosyan et al. | Growth and properties of Lu3Al5O12‐RE3+ single crystals | |
US4240834A (en) | Synthetic single crystal for alexandrite gem | |
RU2674667C1 (en) | Luminescent glass-ceramics | |
SU1228525A1 (en) | Method of monocrystal growing on yttroaluminium garnet base | |
Majumdar et al. | Redox equilibrium and spectral absorption of some colouring oxides in sodium metaphosphate glass | |
AT392489B (en) | Monocrystalline jewellery material based on aluminium garnets | |
Antipenko et al. | Transformation of neodymium laser emission into Tb/3+/ luminescence in glasses coactivated by Tb/3+/ and Yb/3+/ ions | |
Leandri et al. | The near uv spectra of thionylamines | |
Wade | The cause of color in precious stones | |
ES459300A1 (en) | Polyester and process for making same | |
DE646498C (en) | Process for the preparation of 1-amino- or 1-alkylamino-4-oxyanthraquinones | |
DE833537C (en) | Process for the production of gray dyes which can be used in the ceramic and enamel industries | |
SU631474A1 (en) | Method of manufacturing photochromic glass |