CN204074032U - Cubic boron nitride synthesis heating cavity - Google Patents
Cubic boron nitride synthesis heating cavity Download PDFInfo
- Publication number
- CN204074032U CN204074032U CN201420521722.7U CN201420521722U CN204074032U CN 204074032 U CN204074032 U CN 204074032U CN 201420521722 U CN201420521722 U CN 201420521722U CN 204074032 U CN204074032 U CN 204074032U
- Authority
- CN
- China
- Prior art keywords
- dolomite
- carbon plate
- boron nitride
- cubic boron
- bushing pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of cubic boron nitride synthesis heating cavity, comprise dolomite bushing pipe, the carbon pipe that dolomite bushing pipe inwall adheres to, dolomite is provided with in the bottom of dolomite bushing pipe, being the carbon plate of bottom above dolomite, is test rod above carbon plate, and the top of test rod is positioned in the middle part of dolomite bushing pipe and is provided with carbon plate, be provided with another block test rod above carbon plate, be provided with carbon plate at the top of dolomite bushing pipe.By original sample rod being pressed at twice two test rods of original mid-height, making cubic boron nitride thermally equivalent in heating process, reducing axial temperature to greatest extent poor, thus making the growth uniformity of cubic boron nitride.
Description
technical field:
The utility model belongs to superhard material high-pressure synthesis technical field, especially relates to a kind of cubic boron nitride synthesis heating cavity.
background technology:
In superhard material building-up process, the temperature field inside synthesis heating cavity is very crucial, the whether even growth quality directly determining cubic boron nitride of synthetic cavity temperature inside.
At present, the package assembly that the HP-HT synthesize of cubic boron nitride is used is all first precompressed cylindrical sample rod, cylindrical sample rod is loaded in the dolomite bushing pipe with carbon pipe or carbon paper, two ends place circular carbon plate or carbon paper sheet again, finally load onto the high-pressure chamber block that white clouds flag and conducting steel ring combine, under the interaction of cubic hinge press six flat side of a hammers, form the HTHP working cavity being applicable to cubic boron nitride growth.Existing heating passes into electric current from two ends conducting steel ring and heats, and because axial-temperature gradient is comparatively large in heating process, causes cubic boron nitride heating cavity temperature distributing disproportionation even, and then affects the growth uniformity of cubic boron nitride.
utility model content:
The utility model object is to provide a kind of new structure cubic boron nitride synthesis heating cavity simple, with low cost, adopt two coupons original sample rod being pressed at twice original mid-height, and separated by thin carbon plate in the middle of the dolomite bushing pipe and form two chambers, axial temperature difference can be reduced to greatest extent when heating like this, thus make cubic boron nitride grow uniformity.
The technical solution adopted in the utility model is: a kind of cubic boron nitride synthesis heating cavity, comprise dolomite bushing pipe, the carbon pipe that dolomite bushing pipe inwall adheres to, dolomite is provided with in the bottom of dolomite bushing pipe, being the carbon plate of bottom above dolomite, is test rod above carbon plate, and the top of test rod is positioned in the middle part of dolomite bushing pipe and is provided with carbon plate, be provided with another block test rod above carbon plate, be provided with carbon plate at the top of dolomite bushing pipe.
Further, described carbon plate area is less than the sectional area of carbon pipe.
The beneficial effect that the utility model produces is: by original sample rod being pressed at twice two test rods of original mid-height, make cubic boron nitride thermally equivalent in heating process, reduce axial temperature to greatest extent poor, thus make the growth uniformity of cubic boron nitride.
detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, this heater overall structure is cylindrical structure, and outside is the dolomite bushing pipe 1 of hollow cylinder, and the inwall of dolomite bushing pipe 1 adheres to one deck carbon pipe 2, the bottom of carbon pipe 2 is equipped with dolomite 4, and the top of dolomite 4 is lined with the carbon plate 5 that thickness is 0.3 ~ 2.0mm.Columniform test rod 3 is put into dolomite bushing pipe 1, above it at the carbon plate 5 of pad a slice 0.3 ~ 2.0mm.Dolomite bushing pipe 1 is divided into upper and lower two parts by this carbon plate 5, and is put into by the test rod 3 identical with below volume on the carbon plate 5 of middle part, then place mat one deck carbon plate 5 on this test rod 3, and dolomite 4 is sealed top.After assembling, heating cavity be divide into two parts by the carbon plate 5 be positioned in the middle part of heating cavity, ensure that the homogeneous temperature uniformity of heating cavity, then heating cavity is put into pyrophyllite block, cubic hinge press synthesizes.
The utility model, by original sample rod being pressed at twice two test rods of original mid-height, makes cubic boron nitride thermally equivalent in heating process, reduces axial temperature to greatest extent poor, thus makes the growth uniformity of cubic boron nitride.
Claims (2)
1. a cubic boron nitride synthesis heating cavity, it is characterized in that: comprise dolomite bushing pipe, the carbon pipe that dolomite bushing pipe inwall adheres to, dolomite is provided with in the bottom of dolomite bushing pipe, being the carbon plate of bottom above dolomite, is test rod above carbon plate, and the top of test rod is positioned in the middle part of dolomite bushing pipe and is provided with carbon plate, be provided with another block test rod above carbon plate, be provided with carbon plate at the top of dolomite bushing pipe.
2. a kind of cubic boron nitride synthesis heating cavity according to claim 1, is characterized in that: described carbon plate area is less than the sectional area of carbon pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420521722.7U CN204074032U (en) | 2014-09-12 | 2014-09-12 | Cubic boron nitride synthesis heating cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420521722.7U CN204074032U (en) | 2014-09-12 | 2014-09-12 | Cubic boron nitride synthesis heating cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204074032U true CN204074032U (en) | 2015-01-07 |
Family
ID=52166798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420521722.7U Expired - Fee Related CN204074032U (en) | 2014-09-12 | 2014-09-12 | Cubic boron nitride synthesis heating cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204074032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041098A (en) * | 2022-07-19 | 2022-09-13 | 开封贝斯科超硬材料有限公司 | Synthesis method and synthesis block of millimeter-scale cubic boron nitride |
-
2014
- 2014-09-12 CN CN201420521722.7U patent/CN204074032U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115041098A (en) * | 2022-07-19 | 2022-09-13 | 开封贝斯科超硬材料有限公司 | Synthesis method and synthesis block of millimeter-scale cubic boron nitride |
| CN115041098B (en) * | 2022-07-19 | 2023-09-05 | 开封贝斯科超硬材料有限公司 | Synthesis method and synthesis block of millimeter-level cubic boron nitride |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20180912 |