CN206070038U - A kind of crystal growth by flux method platinum crucible cover - Google Patents
A kind of crystal growth by flux method platinum crucible cover Download PDFInfo
- Publication number
- CN206070038U CN206070038U CN201621042412.2U CN201621042412U CN206070038U CN 206070038 U CN206070038 U CN 206070038U CN 201621042412 U CN201621042412 U CN 201621042412U CN 206070038 U CN206070038 U CN 206070038U
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- China
- Prior art keywords
- capping
- platinum crucible
- crucible cover
- crystal growth
- flux method
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Abstract
The utility model discloses a kind of crystal growth by flux method platinum crucible cover, the platinum crucible cover includes cover rim, circular capping and the circular hole concentric with capping.At the edge of capping, straight down, length range is 3mm～20mm to the cover rim；The circular lid face has certain radian, and the circular capping is 5 °～45 ° with the angular range of horizontal plane, and diameter range is 60mm～200mm；The circular hole is concentric with capping, and Circularhole diameter scope is 15mm～30mm, and the circular has an outer wall of certain altitude, and the altitude range of outer wall is 3mm～10mm；The platinum crucible cover thickness range is 0.3mm～2mm.This utility model is applied to the thermograde regulation and control during crystal growth by flux method, while being effectively reduced pollution of the volatile matter to melt in insulation material and melt, it is ensured that the purity of melt.
Description
Technical field
This utility model is related to crystal growth by flux method equipment technical field, more particularly to a kind of life of flux growth metrhod crystal
Length platinum crucible cover.
Background technology
Many crystal just had begun to decompose before intensification is also not up to fusing point, therefore can not use melt method direct growth
This crystalloid, for this crystal-like growth, generally using flux growth metrhod.Flux growth metrhod is to grow a kind of important side of crystal
Method, it is that crystal (as solute) is dissolved in flux at a temperature of far below fusing point, forms uniform and stable high temperature
Solution, by slow cooling, forms supersaturated solution, and under the driving of degree of supersaturation, crystal is slowly constantly analysed on seed crystal
Go out.Using flux growth metrhod, successful growth has gone out a series of nonlinear optical crystals, such as KTiOPO to people4(KTP)、
RbTiOPO4(RTP)、KTiOAsO4(KTA)、RbTiOAsO4(RTA)、β-BaB2O4(BBO)、LiB3O5(LBO)、CsLiB6O10
(CLBO)、K2Al2B2O7(KABO)、KBe2BO3F2(KBBF)、BaAlBO3F2(BABF) etc..
Crystal growth by flux method stove winds resistance wire generally using two-layer ceramic sleeve pipe outside inner sleeve as burner hearth
Used as heater element, burner hearth is placed in a rustless steel furnace shell, bottom pad insulating brick, and fire resistant heat preserving cotton is filled around trocar sheath,
Electric furnace heating wire is separated by trocar sheath with heat-preservation cotton, is prevented because electric furnace heating wire is contacted with heat-preservation cotton and the heating of caused electric furnace heating wire is unstable.
Stockhole adds insulating brick to build thermograde appropriate in burner hearth, and platinum crucible is placed on inside burner hearth, can be according to actual need
Increase or decrease pad brick to adjust crucible in the position of vertical direction.When crystal being grown with flux growth metrhod require there is less
Longitudinally and radially thermograde, and bath surface is contacted with air, the convection current of air causes bath surface temperature to reduce, and causes
Bath surface is larger with melt internal temperature gradient, is easy to produce " drift is brilliant " or in crucible internal walls melt and sky in bath surface
Gas intersection produces parasitic nucleation, has a strong impact on the growth of crystal.The insulating brick of stockhole typically by resistant to elevated temperatures aluminium oxide or
Zirconium oxide is prepared from, and in crystal growing process, stockhole insulating brick inevitably has some aluminium oxidies or zirconium oxide
Particle detachment falls into melt；In addition, the low-boiling point material in melt also can constantly volatilize and then crystallize on stockhole insulating brick
Get off, slowly corrode after insulating brick causes insulating brick " decortication " and melt is fallen into crystal.After these impurity enter melt,
Especially easily cause new crystalline temperature at the crystal growth initial stage, these new crystalline temperatures compete life in the melt together with crystal
It is long, cause plane of crystal because crystallizing generation that is uneven and easily causing inclusion enclave, when serious, cause crystal growth to fail；Drop
These impurity elements into melt can also be in the form of dopant ion into the lattice for growing crystal, so as to reduce crystal
Purity, affects crystal property.
At present, during crystal growth by flux method, typically do not use crucible cover or be utilized in mouth of pot and add a cover one
Individual platinum flat board annulus cover plate, this platinum flat board annulus cover plate typically have larger circular hole, although can reduce in crucible
The probability of parasitic nucleation is produced at wall melt and air interface, but during crystal growth by flux method, it is impossible to effectively keep away
Exempt from pollution of the impurity on stockhole insulating brick to melt.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of crystal growth by flux method platinum crucible cover, energy
It is enough effectively to reduce volatile matter in stockhole insulating brick and melt and come off the pollution to melt；Meanwhile, the radian folder of circular capping
Angle arranges the thermograde of solid liquid interface when crucible face can be made to adjust crystal growth as heat radiation shield, so as to reach significantly
Improve crystal yield rate, improve the effect of crystals quality in ground.
To solve above-mentioned technical problem, technical solution of the present utility model is as follows：
A kind of crystal growth by flux method platinum crucible cover, its feature are that the platinum crucible cover includes cover rim, circle
The capping of shape and the circular hole concentric with capping, the cover rim are centered around the edge of the capping, and straight down, the capping is
It is circular, and there is downwards certain radian, be provided with manhole at the center of the capping, the excircle of the through hole is provided with outer wall.
Preferably, the capping and the angle of horizontal plane are 5 °～45 °, a diameter of 60mm～200mm.
Preferably, a diameter of 15mm～30mm of the through hole.
Preferably, the height of the outer wall is 3mm～10mm.
Preferably, the height of the cover rim is 3mm～20mm.
Preferably, the thickness of the crucible cover is 0.3mm～2mm.
Compared with prior art, the beneficial effects of the utility model are：This utility model platinum crucible cover, before crystal growth
Crucible cover circular hole outer wall is clamped with Crucible tongss platinum crucible cover to be covered on platinum crucible, cover rim blocks platinum crucible, makes platinum
Crucible cover is not easy " sideslip ", and the radian angle of circular capping is arranged can make crucible face adjust crystal life as heat radiation shield
The thermograde of solid liquid interface when long, while reduce volatile matter in stockhole insulating brick and melt come off the pollution to melt, from
And reach the effect for improving crystal yield rate, improving crystals quality.
Description of the drawings
Fig. 1 is the axonometric chart of this utility model embodiment；
Fig. 2 is the front view of this utility model embodiment；
Fig. 3 is the upward view of this utility model embodiment；
Specific embodiment
Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model
It is easier to be understood by this area scientific and technical personnel with feature, it is apparent clear and definite so as to make to protection domain of the present utility model
Define.
As shown in Figures 1 to 3, a kind of crystal growth by flux method platinum crucible cover, including cover rim 1, circular 2 and of capping
The circular hole 3 concentric with capping.At the edge of capping 2, straight down, length range is 3mm～20mm to the cover rim 1；The circle
Shape capping 2 has certain radian, and the circular capping 2 is 5 °～45 ° with the angular range of horizontal plane, and diameter range is 60～
200mm；The circular hole 3 is concentric with capping 2, and 3 diameter range of circular hole is 15mm～30mm, has certain altitude around the circular hole 3
Outer wall 4, the altitude range of outer wall 4 is 3mm～10mm；The platinum crucible cover thickness range is 0.3mm～2mm.
The course of work of this utility model platinum crucible cover is as follows：Before crystal growth, crucible cover circular hole is clamped with Crucible tongss
Outer wall covers platinum crucible cover on platinum crucible, and cover rim blocks platinum crucible.According to actual process, suitable temperature is selected,
Seed crystal is touched into melt from the slow test of crucible cover circular hole, suitable crystalline substance rotary speed and cooling process is set, is started growth brilliant
Body.This utility model platinum crucible cover is applied to the growth of flux growth metrhod crystal and prepares, and the radian angle of circular capping is arranged can
So that crucible face as heat radiation shield adjust crystal growth when solid liquid interface thermograde and reduce stockhole insulating brick and
In melt, volatile matter comes off the pollution to melt, so as to reach the effect for improving crystal yield rate, improving crystals quality.
Embodiment of the present utility model is the foregoing is only, interest field of the present utility model is not thereby limited.It is aobvious and
It is clear to, any to the embodiment associated change or change that those skilled in the art are made, all without beyond this
The design of utility model and the protection domain of claims.
Claims (6)
1. a kind of crystal growth by flux method platinum crucible cover, it is characterised in that the platinum crucible cover includes cover rim, circle
Capping and the circular hole concentric with capping, the cover rim is centered around the edge of the capping, and straight down, the capping is circle
Shape and downwards have certain radian, be provided with manhole at the center of the capping, the excircle of the through hole is provided with outer wall.
2. a kind of crystal growth by flux method platinum crucible cover as claimed in claim 1, it is characterised in that the capping with
The angle of horizontal plane is 5 °～45 °, a diameter of 60mm～200mm.
3. a kind of crystal growth by flux method platinum crucible cover as claimed in claim 1, it is characterised in that the through hole
A diameter of 15mm～30mm.
4. a kind of crystal growth by flux method platinum crucible cover as claimed in claim 1, it is characterised in that the outer wall
Highly it is 3mm～10mm.
5. a kind of crystal growth by flux method platinum crucible cover as claimed in claim 1, it is characterised in that the cover rim
Highly it is 3mm～20mm.
6. a kind of crystal growth by flux method platinum crucible cover as described in any one of Claims 1 to 5, it is characterised in that
The thickness of the crucible cover is 0.3mm～2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621042412.2U CN206070038U (en) | 2016-09-08 | 2016-09-08 | A kind of crystal growth by flux method platinum crucible cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621042412.2U CN206070038U (en) | 2016-09-08 | 2016-09-08 | A kind of crystal growth by flux method platinum crucible cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206070038U true CN206070038U (en) | 2017-04-05 |
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ID=58437201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621042412.2U Active CN206070038U (en) | 2016-09-08 | 2016-09-08 | A kind of crystal growth by flux method platinum crucible cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206070038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875473A (en) * | 2022-05-30 | 2022-08-09 | 福建福晶科技股份有限公司 | Crystal preparation method for improving KGW crystal quality and utilization rate |
-
2016
- 2016-09-08 CN CN201621042412.2U patent/CN206070038U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875473A (en) * | 2022-05-30 | 2022-08-09 | 福建福晶科技股份有限公司 | Crystal preparation method for improving KGW crystal quality and utilization rate |
| CN114875473B (en) * | 2022-05-30 | 2023-11-14 | 福建福晶科技股份有限公司 | Crystal preparation method for improving KGW crystal quality and utilization rate |
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