CN105396512B - Hexagonal tungsten nitride reaction block - Google Patents
Hexagonal tungsten nitride reaction block Download PDFInfo
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- CN105396512B CN105396512B CN201510914436.6A CN201510914436A CN105396512B CN 105396512 B CN105396512 B CN 105396512B CN 201510914436 A CN201510914436 A CN 201510914436A CN 105396512 B CN105396512 B CN 105396512B
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- cylinder
- heat resistant
- resistant layer
- tungsten nitride
- anvil
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Abstract
Field, specially hexagonal tungsten nitride reaction block are synthesized the present invention relates to superhard material.The present invention includes：High-pressure heater, cylinder, anvil, pad, synthetic cavity；Cylinder, anvil and high-pressure heater outer wall are connected, high-pressure heater center is provided with synthetic cavity, pad is provided between space between cylinder, anvil, synthetic cavity three, cylinder, anvil, synthetic cavity part are set inside cylindrical reaction block, coordinate high temperature and high pressure environment, nitridation tungsten powder is sintered, the synthetic crystal of hexagonal tungsten nitride is obtained.Arranging raw material powder is carried out under high pressure-temperature, can synthesize hexagonal tungsten nitride, and its product has chemical inertness, is not reacted substantially with metallic crystal, Upon Cooperative Efficiency, and synthesis cost is small.
Description
Technical field
Field, specially hexagonal tungsten nitride reaction block are synthesized the present invention relates to superhard material.
Background technology
Superhard material then refers to the material that hardness can be comparable with diamond.The superhard material used at present is mainly cube
Boron nitride and diamond, but also many superhard materials are researched and developed, such as boron carbide, twin diamond, the III such as carborundum
Compound between race and IV races.
Tungsten carbide is the raw material of hard alloy family, and pure tungsten carbide is less commonly used, and tungsten carbide is shaped as black hexagonal crystal
Body, there is metallic luster, and hardness is close with diamond, is electricity, the good conductor of heat, and 2870 DEG C of fusing point, 6000 DEG C of boiling point is relatively close
Spend 15.63 (18 DEG C).Tungsten carbide is water insoluble, hydrochloric acid and sulfuric acid, is soluble in the mixed acid of nitrate acid and hydrofluoric acid.Pure carbonization
Tungsten is frangible, if mixing the metals such as a small amount of titanium, cobalt, with regard to that can reduce fragility.Tungsten carbide as steel cutting tool, is commonly incorporated into carbonization
Titanium, ramet or their mixture, to improve antiknock ability.The chemical property of tungsten carbide is stable.In tungsten carbide, carbon is former
The gap of the embedded tungsten metal lattice of son, does not destroy the lattice of original metal, forms interstitial solid solution, therefore also referred to as calking（Or
Insertion）Compound.Tungsten carbide can be heated at high temperature by the mixture of tungsten and carbon to be made, and the presence of hydrogen or hydro carbons can accelerate reaction
Carry out.If being prepared with the oxygenatedchemicals of tungsten, product finally must carry out application of vacuum at 1500 DEG C, to remove oxidation of coal
Compound.Tungsten carbide is suitably machined at high temperature, can make cutting element, the structural material of kiln, jet engine,
Gas turbine, nozzle etc..
Now, tungsten carbide (WC) is that quite outstanding high rigidity, heat resistance and chemical stability are widely used as one
Individual natural superhard material is for being ground, cutting element is (for example, a drill bit, milling cutter, hobboing cutter, an engine lathe gear shaping
Knife), etc..
However, working as carbide composite material, such as carbon fibre composite is used for aircraft body etc., even with by
Tungsten carbide tool, the abrasion of instrument turns into fierce in recent years, and carbon component is when the wearing character of crystal degeneration instrument is reacted with iron
Between cut the material of carbonization ferrotungsten system, because carbon component and iron crystal easily react, accordingly, it would be desirable to a kind of new replacement tungsten carbide
High hardness material.
Tungsten nitride W2N belongs to cubic system, and quality is hard, brown solid, and hexagonal tungsten nitride can be used as high hardness material
Can alternatively tungsten carbide high hardness material, and with more superior and special function.
Scientific and technical personnel are carrying out the research of high nitrogen content transitional metal nitride always, also theoretically calculate and predict hexagonal
Tungsten nitride can be used as high hardness material, be nitrogenized for substituting carbide and iron crystal combination, and have studied with hexagonal
Tungsten powder is the synthetic method of the hexagonal tungsten nitride of main component, and can synthesize a certain amount of hexagonal tungsten nitride.By this
Method, about 50 microns of the compound particle diameter of hexagonal tungsten nitride monocrystalline.This method requires extremely strict to synthesis condition, system
Cause too high, it is difficult to produce in batches, widespread adoption, meanwhile, compound particle is relatively large in diameter.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide hexagonal tungsten nitride reaction block, cylindrical reaction block inside is set
The parts such as cylinder, anvil, synthetic cavity, coordinate high temperature and high pressure environment, and nitridation tungsten powder is sintered, hexagonal tungsten nitride is obtained
Synthetic crystal.
To achieve these goals, the present invention uses following technical scheme
Hexagonal tungsten nitride reaction block, it includes, high-pressure heater 1, cylinder 2, anvil 3, pad 4, synthetic cavity 5；It is described
Synthetic cavity 5 includes, the first heat resistant layer 51, the second heat resistant layer 52, outer shroud 53, the 3rd heat resistant layer 54, inner ring 55, pyrophillite cylinder
56, interior filled cavity 57, outer filled cavity 58, raw material capsule 59, raw material powder 510, carbon heater 511.
The high-pressure heater 1 is internally provided with cylinder 2, anvil 3, and the cylinder 2, anvil 3 are arranged in pairs, the cylinder
2nd, anvil 3 is connected with the outer wall of high-pressure heater 1, and the center of high-pressure heater 1 is provided with synthetic cavity 5, the cylinder
2nd, pad 4 is provided between the space between anvil 3, the three of synthetic cavity 5, the upper and lower ends of pyrophillite cylinder 56 are both provided with
One heat resistant layer 51, the second heat resistant layer 52, the 3rd heat resistant layer 54, second heat resistant layer 52 are provided at both ends with outer shroud 53, described
One heat resistant layer 51, the 3rd heat resistant layer 54 are connected with the inwall of pyrophillite cylinder 56, and the outer shroud 53 is connected with the inwall of pyrophillite cylinder 56, institute
State the first heat resistant layer 51, the second heat resistant layer 52, the 3rd heat resistant layer 54 to be sequentially connected, the pyrophillite cylinder 56 is internally provided with outer fill out
Chamber 58 is filled, the position at outer 58 4 angles of filled cavity is provided with inner ring 55, and the outer filled cavity 58 is internally provided with carbon heating
Device 511, the carbon heater 511 is connected with the 3rd heat resistant layer 54, and the carbon heater 511 is internally provided with interior filled cavity 57,
The interior filled cavity 57 is internally provided with raw material capsule 59, and the raw material capsule 59 is internally provided with raw material powder 510.
The high-pressure heater 1 is shaped as cylinder.
The synthetic cavity 5 is shaped as cuboid.
Filler in the interior filled cavity 57, outer filled cavity 58 is physiological saline and the zirconium oxide of 10% proportion.
The heating-up temperature that the carbon heater 511 can be provided is 1200-2600 DEG C.
The raw material powder 510 is tungsten nitride particulate, and particle diameter is 20 microns to 1 micron.
Beneficial effects of the present invention
1st, in the course of the work, arranging raw material powder is carried out the present invention under high pressure-temperature, can synthesize hexagonal tungsten nitride.
2nd, the tungsten nitride that the present invention is produced has more preferable chemical inertness, is not reacted substantially with metallic crystal.
3rd, the agglomerate of hexagonal tungsten nitride has more preferable structural stability and wear resistance.
4th, reaction block improves the Upon Cooperative Efficiency of hexagonal tungsten nitride, reduces cost.
5th, because superhard material is difficult shape, the size needed for being worked into, and the present invention is sintering synthesised polycrystalline body hexagonal
Tungsten nitride crystal, shape and size of the direct forming for needed in sintering.
Brief description of the drawings
Fig. 1 is the structural representation of reaction block of the present invention；
Fig. 2 is the structural representation of synthetic cavity of the present invention.
In its figure：1-high-pressure heater, 2-cylinder, 3-anvil, 4-pad, 5-synthetic cavity；51-the first thermal resistance
Layer, the 52-the second heat resistant layer, 53-outer shroud, the 54-the three heat resistant layer, 55-inner ring, 56-pyrophillite cylinder, 57-interior filled cavity,
58-outer filled cavity, 59-raw material capsule, 510-raw material powder, 511-carbon heater.
Embodiment
In view of the above-mentioned problems, it is an object of the invention to provide hexagonal tungsten nitride reaction block, cylindrical reaction block inside is set
The parts such as cylinder, anvil, synthetic cavity, coordinate high temperature and high pressure environment, and nitridation tungsten powder is sintered, hexagonal tungsten nitride is obtained
Synthetic crystal.
Hexagonal tungsten nitride reaction block, it includes, high-pressure heater 1, cylinder 2, anvil 3, pad 4, synthetic cavity 5；It is described
Synthetic cavity 5 includes, the first heat resistant layer 51, the second heat resistant layer 52, outer shroud 53, the 3rd heat resistant layer 54, inner ring 55, pyrophillite cylinder
56, interior filled cavity 57, outer filled cavity 58, raw material capsule 59, raw material powder 510, carbon heater 511.
The high-pressure heater 1 is internally provided with cylinder 2, anvil 3, and the cylinder 2, anvil 3 are arranged in pairs, the cylinder
2nd, anvil 3 is connected with the outer wall of high-pressure heater 1, and the center of high-pressure heater 1 is provided with synthetic cavity 5, the cylinder
2nd, pad 4 is provided between the space between anvil 3, the three of synthetic cavity 5, the upper and lower ends of pyrophillite cylinder 56 are both provided with
One heat resistant layer 51, the second heat resistant layer 52, the 3rd heat resistant layer 54, second heat resistant layer 52 are provided at both ends with outer shroud 53, described
One heat resistant layer 51, the 3rd heat resistant layer 54 are connected with the inwall of pyrophillite cylinder 56, and the outer shroud 53 is connected with the inwall of pyrophillite cylinder 56, institute
State the first heat resistant layer 51, the second heat resistant layer 52, the 3rd heat resistant layer 54 to be sequentially connected, the pyrophillite cylinder 56 is internally provided with outer fill out
Chamber 58 is filled, the position at outer 58 4 angles of filled cavity is provided with inner ring 55, and the outer filled cavity 58 is internally provided with carbon heating
Device 511, the carbon heater 511 is connected with the 3rd heat resistant layer 54, and the carbon heater 511 is internally provided with interior filled cavity 57,
The interior filled cavity 57 is internally provided with raw material capsule 59, and the raw material capsule 59 is internally provided with raw material powder 510.
The high-pressure heater 1 is shaped as cylinder.
The synthetic cavity 5 is shaped as cuboid.
Filler in the interior filled cavity 57, outer filled cavity 58 is physiological saline and the zirconium oxide of 10% proportion.
The heating-up temperature that the carbon heater 511 can be provided is 1200-2600 DEG C.
The raw material powder 510 is tungsten nitride particulate, and particle diameter is 10 microns.
Below in conjunction with the accompanying drawings and embodiment, the present invention is described in further details
As shown in Figure 1 and Figure 2, the high-pressure heater 1 is internally provided with cylinder 2, anvil 3, the cylinder 2, anvil 3 into
To setting, the cylinder 2, anvil 3 are connected with the outer wall of high-pressure heater 1, and the center of high-pressure heater 1 is provided with synthesis
Pad 4 is provided between cavity 5, the space between the cylinder 2, anvil 3, the three of synthetic cavity 5, the pyrophillite cylinder is about 56
Two ends are both provided with the first heat resistant layer 51, the second heat resistant layer 52, the 3rd heat resistant layer 54, and second heat resistant layer 52 is provided at both ends with
Outer shroud 53, first heat resistant layer 51, the 3rd heat resistant layer 54 are connected with the inwall of pyrophillite cylinder 56, the outer shroud 53 and pyrophillite cylinder
56 inwalls are connected, and first heat resistant layer 51, the second heat resistant layer 52, the 3rd heat resistant layer 54 are sequentially connected, the pyrophillite cylinder 56
Outer filled cavity 58 is internally provided with, the position at outer 58 4 angles of filled cavity is provided with inner ring 55, the outer filled cavity 58
Portion is provided with carbon heater 511, and the carbon heater 511 is connected with the 3rd heat resistant layer 54, and the inside of carbon heater 511 is set
There is interior filled cavity 57, the interior filled cavity 57 is internally provided with raw material capsule 59, and the raw material capsule 59 is internally provided with raw material
Powder 510.
The high-pressure heater 1 is shaped as cylinder, and the synthetic cavity 5 is shaped as cuboid.
Filler in the interior filled cavity 57, outer filled cavity 58 is physiological saline and the zirconium oxide of 10% proportion.
The heating-up temperature that the carbon heater 511 can be provided is 1200-2600 DEG C, and the reaction temperature of synthetic cavity can not
Less than 1200 DEG C, different temperature and pressure conditions, the sintering degree of hexagonal tungsten nitride is also different.
The raw material powder 510 is tungsten nitride particulate, and particle diameter is 20 microns or smaller, and particle diameter is smaller, on an equal basis
Under the conditions of obtained hexagonal tungsten nitride sintering degree it is higher.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, this area is common
Other modifications or equivalent substitution that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover among scope of the presently claimed invention.
Claims (5)
1. hexagonal tungsten nitride reaction block, it is characterised in that it includes, high-pressure heater（1）, cylinder（2）, anvil（3）, pad
（4）, synthetic cavity（5）;Synthetic cavity（5）Including the first heat resistant layer（51）, the second heat resistant layer（52）, outer shroud（53）, the 3rd resistance
Thermosphere（54）, inner ring（55）, pyrophillite cylinder（56）, interior filled cavity（57）, outer filled cavity（58）, raw material capsule（59）, raw material powder
（510）, carbon heater（511）；
The high-pressure heater（1）It is internally provided with cylinder（2）, anvil（3）, the cylinder（2）, anvil（3）It is arranged in pairs, institute
State cylinder（2）, anvil（3）With high-pressure heater（1）Outer wall is connected, the high-pressure heater（1）Center is provided with synthesis
Cavity（5）, the cylinder（2）, anvil（3）, synthetic cavity（5）Pad is provided between space between three（4）, the leaf is cured
Stone cylinder（56）Upper and lower ends are both provided with the first heat resistant layer（51）, the second heat resistant layer（52）, the 3rd heat resistant layer（54）, described second
Heat resistant layer（52）It is provided at both ends with outer shroud（53）, first heat resistant layer（51）, the 3rd heat resistant layer（54）With pyrophillite cylinder（56）
Inwall is connected, the outer shroud（53）With pyrophillite cylinder（56）Inwall is connected, first heat resistant layer（51）, the second heat resistant layer
（52）, the 3rd heat resistant layer（54）It is sequentially connected, the pyrophillite cylinder（56）It is internally provided with outer filled cavity（58）, the outer filling
Chamber（58）The position at four angles is provided with inner ring（55）, the outer filled cavity（58）It is internally provided with carbon heater（511）, it is described
Carbon heater（511）With the 3rd heat resistant layer（54）Connection, the carbon heater（511）It is internally provided with interior filled cavity（57）, institute
State interior filled cavity（57）It is internally provided with raw material capsule（59）, the raw material capsule（59）It is internally provided with raw material powder（510）.
2. hexagonal tungsten nitride reaction block according to claim 1, it is characterised in that the high-pressure heater（1）Shape
For cylinder;The synthetic cavity（5）Be shaped as cuboid.
3. hexagonal tungsten nitride reaction block according to claim 1, it is characterised in that the interior filled cavity（57）, outer filling
Chamber（58）Interior filler is the zirconium oxide of physiological saline and 10% proportion.
4. hexagonal tungsten nitride reaction block according to claim 1, it is characterised in that the carbon heater（511）It can carry
The heating-up temperature of confession is 1200-2600 DEG C.
5. hexagonal tungsten nitride reaction block according to claim 1, it is characterised in that the raw material powder（510）For tungsten nitride
Particulate, particle diameter is 20 microns to 1 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510914436.6A CN105396512B (en) | 2015-12-13 | 2015-12-13 | Hexagonal tungsten nitride reaction block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510914436.6A CN105396512B (en) | 2015-12-13 | 2015-12-13 | Hexagonal tungsten nitride reaction block |
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| Publication Number | Publication Date |
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| CN105396512A CN105396512A (en) | 2016-03-16 |
| CN105396512B true CN105396512B (en) | 2017-09-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4604106A (en) * | 1984-04-16 | 1986-08-05 | Smith International Inc. | Composite polycrystalline diamond compact |
| CN201537480U (en) * | 2009-08-11 | 2010-08-04 | 郑州中南杰特超硬材料有限公司 | Cubic boron nitride high-pressure synthesizer |
| CN202199324U (en) * | 2011-07-15 | 2012-04-25 | 河南富耐克超硬材料股份有限公司 | Reaction chamber and reaction block for superhard material |
| CN204656490U (en) * | 2015-05-25 | 2015-09-23 | 北京富成国际金刚石技术有限公司 | A kind of package assembly of synthesizing multi-disc diamond or cubic boron nitride composite piece |
| CN104959080A (en) * | 2015-07-13 | 2015-10-07 | 吉林师范大学 | Chamber assembly for synthesizing diamond and cubic boron nitride sintered body and assembling method |
-
2015
- 2015-12-13 CN CN201510914436.6A patent/CN105396512B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4604106A (en) * | 1984-04-16 | 1986-08-05 | Smith International Inc. | Composite polycrystalline diamond compact |
| CN201537480U (en) * | 2009-08-11 | 2010-08-04 | 郑州中南杰特超硬材料有限公司 | Cubic boron nitride high-pressure synthesizer |
| CN202199324U (en) * | 2011-07-15 | 2012-04-25 | 河南富耐克超硬材料股份有限公司 | Reaction chamber and reaction block for superhard material |
| CN204656490U (en) * | 2015-05-25 | 2015-09-23 | 北京富成国际金刚石技术有限公司 | A kind of package assembly of synthesizing multi-disc diamond or cubic boron nitride composite piece |
| CN104959080A (en) * | 2015-07-13 | 2015-10-07 | 吉林师范大学 | Chamber assembly for synthesizing diamond and cubic boron nitride sintered body and assembling method |
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| CN105396512A (en) | 2016-03-16 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Zeyu Inventor after: Shi Yanhong Inventor after: Lian Xinlan Inventor before: Lian Xinlan Inventor before: Mao Baozhan |
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Effective date of registration: 20170807 Address after: 450045 Zhengzhou Jinshui District, Henan, North Ring Road, No. 36 Applicant after: North University of Water Resource and Electric Power Address before: 450007 Henan Province, Zhengzhou City Road, No. 37 volt cow Road, building No. 14, No. 156 Applicant before: HENAN GUANGDU SUPERHARD MATERIAL CO., LTD. |
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