CN212833506U - Polycrystalline cubic boron nitride composite sheet with surface nitrided or boronized hard alloy matrix - Google Patents
Polycrystalline cubic boron nitride composite sheet with surface nitrided or boronized hard alloy matrix Download PDFInfo
- Publication number
- CN212833506U CN212833506U CN202021006431.6U CN202021006431U CN212833506U CN 212833506 U CN212833506 U CN 212833506U CN 202021006431 U CN202021006431 U CN 202021006431U CN 212833506 U CN212833506 U CN 212833506U
- Authority
- CN
- China
- Prior art keywords
- boron nitride
- cubic boron
- hard alloy
- layer
- nitriding
- 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.)
- Active
Links
Images
Abstract
The utility model relates to a surface nitriding or boriding carbide base member glomerocryst cubic boron nitride compound piece, used surface nitriding or boriding carbide surface can form one deck W-C-Co-N or W-C-Co-B and be the compound, and hardness reduces from the top layer to carbide gradually to top layer hardness is close cubic boron nitride layer hardness. The surface W-C-Co-N or W-C-Co-B series compound contains no metal, so that a large amount of metal cannot permeate into the cubic boron nitride layer under the condition of high temperature and high pressure, and the hard alloy nitriding or the interface of the mixed initial material of the boronized layer W-C-Co-N or W-C-Co-B series compound and the cubic boron nitride layer can generate chemical reaction under the condition of high temperature and high pressure to form chemical bond combination. The thermal stability of the surface nitriding or boronizing hard alloy is improved; the layering probability is reduced; the product has good crack resistance and collapse resistance.
Description
Technical Field
The utility model relates to a preparation technical field of polycrystalline cubic boron nitride compound piece that cutting tool used, concretely relates to surface nitriding or boriding carbide base member polycrystalline cubic boron nitride compound piece.
Background
The cubic boron nitride has better thermal stability than that of the artificial diamond, can still keep high enough mechanical property and hardness at high temperature, and has good red hardness; the cubic boron nitride has stable structure, high oxidation resistance and good chemical stability, and compared with diamond, the cubic boron nitride does not react with iron group elements at the temperature of 1100-1300 ℃, so the cubic boron nitride is particularly suitable for processing ferrous metal materials. The polycrystalline cubic boron nitride is prepared by sintering cubic boron nitride single crystal with optional addition of binder or under ultrahigh pressure and high temperature without addition of any binder. Polycrystalline cubic boron nitride has most of the properties of cubic boron nitride, and overcomes the defect of directional crystal face cleavage of cubic boron nitride single crystals.
Polycrystalline cubic boron nitride is mainly used for manufacturing cutter materials. The polycrystalline cubic boron nitride cutter blank mainly comprises three types, wherein one type is an integral pure polycrystalline cubic boron nitride sintered sheet; the second type is a composite sheet which is formed by taking polycrystalline cubic boron nitride as a polycrystalline layer and hard alloy as a substrate through high-temperature and high-pressure co-sintering; and thirdly, sintering to prepare polycrystalline cubic boron nitride blade blanks, and then welding the polycrystalline cubic boron nitride blade blanks to the hard alloy to prepare the polycrystalline cubic boron nitride blade. Because the hard alloy has good toughness, the hard alloy is usually used as a matrix and is combined with polycrystalline cubic boron nitride to prepare the composite sheet. However, the hard alloy substrate and the polycrystalline layer have large chemical composition difference and different thermal expansion coefficients, and the composite sheet is easy to crack and delaminate, so that the use is greatly limited. In order to solve the problems, the chinese patent CN102505090B utilizes a similar compatibility principle, adds hard alloy micro powder having the same chemical composition as the hard alloy matrix into polycrystalline layer synthesis raw material micro powder contacting with the hard alloy matrix, and changes the content of the hard alloy micro powder along the direction away from the matrix by a chemical gradient method, and the content of the hard alloy micro powder is continuously reduced along the direction away from the matrix. During ultrahigh pressure and high temperature sintering, the temperature in the synthesis cavity has gradient property, the internal temperature is high, the external temperature is low, and correspondingly, the cobalt element in the hard alloy matrix diffuses to a high temperature region, so that the compatibility and the bonding strength of the polycrystalline layer and the hard alloy matrix are enhanced. However, the major problems with the use of alloy matrices still remain, such as: 1) the metal of the alloy layer can penetrate into the CBN layer in a large quantity, so that the thermal stability of the composite sheet is reduced; 2) the interface bonding force is still the bonding of a metal permeable layer, and the layering rate is high; 3) the difference between the thermal expansion coefficients of the matrix and the CBN layer is large, and the crack resistance and the collapse resistance of the product are poor; 4) the polycrystalline cubic boron nitride composite sheet with the alloy matrix has poor heat resistance, and the vacuum welding temperature is limited to be increased in the later-stage cutter manufacturing process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the existing technical insufficiency, providing a polycrystalline cubic boron nitride composite sheet with surface nitriding or boronizing hard alloy replacing the traditional hard alloy as the matrix.
The technical concept of the utility model is that the hardness and the thermal expansion coefficient of carbide and cubic boron nitride layer are showing differently, if design one deck gradient layer and make interface department performance be close, reduce interfacial stress, reduce the layering rate. The hard alloy surface nitriding or boronizing treatment technology has reported that a layer of W-C-Co-N or W-C-Co-B compound is formed on the hard alloy surface after the surface nitriding or boronizing treatment, the hardness is gradually reduced from the surface layer to the hard alloy, and the hardness of the surface layer is close to the hardness of a cubic boron nitride layer. The surface W-C-Co-N or W-C-Co-B series compound contains no metal, so that a large amount of metal cannot permeate into the cubic boron nitride layer under the condition of high temperature and high pressure, and the hard alloy nitriding or the interface of the mixed initial material of the boronized layer W-C-Co-N or W-C-Co-B series compound and the cubic boron nitride layer can generate chemical reaction under the condition of high temperature and high pressure to form chemical bond combination. Therefore, surface nitriding or boronizing cemented carbides can solve the main problems of the alloy matrix:
compared with the traditional hard alloy matrix, the metal content in the cubic boron nitride layer is reduced, and the thermal stability is improved;
secondly, interface bonding force is changed from the original bonding of a metal permeable layer to the bonding of a chemical bond, so that the layering probability is reduced;
thirdly, the hard alloy nitriding or boronizing layer W-C-Co-N or W-C-Co-B series compound and the cubic boron nitride layer have closer thermal expansion coefficients, reduce the macroscopic stress and improve the crack resistance and the collapse resistance of the product;
fourthly, the surface nitriding or boronizing hard alloy matrix polycrystalline cubic boron nitride has higher heat resistance.
The surface nitriding treatment of the hard alloy substrate forms a nitriding layer, and the nitriding layer and the polycrystalline cubic boron nitride layer are sintered into an integral structure at high temperature and high pressure.
The surface nitriding layer of the hard alloy is a W-C-Co-N compound.
And carrying out boronizing treatment on the surface of the hard alloy matrix to form a boronizing layer, and sintering the boronizing layer and the polycrystalline cubic boron nitride layer into an integral structure at high temperature and high pressure.
The surface boronizing layer of the hard alloy is a W-C-Co-B compound.
The surface boronizing layer of the hard alloy is a W-C-Co-B compound with the thickness of 0.005-0.1 mm.
The utility model discloses used surface nitriding or boriding carbide surface can form one deck W-C-Co-N or W-C-Co-B and be the compound, and hardness reduces from the top layer to carbide gradually to top layer hardness is close cubic boron nitride layer hardness. The surface W-C-Co-N or W-C-Co-B series compound contains no metal, so that a large amount of metal cannot permeate into the cubic boron nitride layer under the condition of high temperature and high pressure, and the hard alloy nitriding or the interface of the mixed initial material of the boronized layer W-C-Co-N or W-C-Co-B series compound and the cubic boron nitride layer can generate chemical reaction under the condition of high temperature and high pressure to form chemical bond combination. Therefore, surface nitriding or boronizing cemented carbides can solve the main problems of the alloy matrix:
compared with the traditional hard alloy matrix, the metal content in the cubic boron nitride layer is reduced, and the thermal stability is improved;
secondly, interface bonding force is changed from the original bonding of a metal permeable layer to the bonding of a chemical bond, so that the layering probability is reduced;
thirdly, the hard alloy nitriding or boronizing layer W-C-Co-N or W-C-Co-B series compound and the cubic boron nitride layer have closer thermal expansion coefficients, reduce the macroscopic stress and improve the crack resistance and the collapse resistance of the product;
fourthly, the surface nitriding or boronizing hard alloy matrix polycrystalline cubic boron nitride has higher heat resistance.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, a surface nitriding hard alloy matrix polycrystalline cubic boron nitride composite sheet comprises a hard alloy matrix 1 and a polycrystalline cubic boron nitride layer 3, wherein a nitriding layer 2 is formed by surface nitriding treatment of the hard alloy matrix 1, and the nitriding layer 2 and the polycrystalline cubic boron nitride layer 3 are sintered into an integral structure at high temperature and high pressure.
The surface nitriding layer 2 of the hard alloy 1 is a W-C-Co-N compound.
As shown in fig. 1, the polycrystalline cubic boron nitride composite sheet with the surface boronized hard alloy matrix comprises a hard alloy matrix 1 and a polycrystalline cubic boron nitride layer 3, wherein the surface boronized hard alloy matrix 1 is processed to form a boronized layer 2, and the boronized layer 2 and the polycrystalline cubic boron nitride layer 3 are sintered into an integral structure at high temperature and high pressure.
The surface boronizing layer 2 of the hard alloy 1 is a W-C-Co-B compound.
The surface boronizing layer 2 of the hard alloy 1 is a W-C-Co-B compound with the thickness of 0.005-0.1 mm.
Example 1
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface nitrided hard alloy matrix, which takes hard alloy subjected to surface nitriding treatment as the matrix and takes a ceramic binder and a cubic boron nitride mixed blank as a cubic boron nitride layer.
The surface nitrided hard alloy used in this example was produced by the host edt materials ltd, and had a thickness of 4 mm, a diameter of 58 mm, and a surface nitrided layer of 0.05 mm.
In the embodiment, the cubic boron nitride layer is composed of the following components in parts by mass: 50 parts of cubic boron nitride having an average particle size of 2 μm and 50 parts of titanium carbide having an average particle size of 2 μm.
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface nitrided hard alloy matrix, which comprises the following steps:
the first step is as follows: respectively and uniformly mixing the cubic boron nitride with different contents and titanium carbide to obtain a series of initial materials with different cubic boron nitride contents;
the second step is that: using surface nitriding hard alloy to replace a traditional hard alloy sheet as a matrix, and pressing the initial material obtained in the first step onto the surface nitriding hard alloy matrix through a die;
the third step: and assembling the blocks pressed in the second step into a high-temperature high-pressure synthesis block, and performing high-temperature high-pressure sintering at the pressure of 5.5 GPa and the temperature of 1450 ℃, and preserving the heat for 20 minutes to obtain the novel polycrystalline cubic boron nitride composite sheet.
Example 2
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface nitrided hard alloy matrix, which takes hard alloy subjected to surface nitriding treatment as the matrix and takes a ceramic binder and a cubic boron nitride mixed blank as a cubic boron nitride layer.
The surface nitrided hard alloy used in this example was produced by the host edt materials ltd, and had a thickness of 4 mm, a diameter of 58 mm, and a surface nitrided layer of 0.005 mm.
In the embodiment, the cubic boron nitride layer is composed of the following components in parts by mass: 90 parts of cubic boron nitride with the average particle size of 0.1 micron and 10 parts of metal aluminum powder with the average particle size of 1 micron.
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface nitrided hard alloy matrix, which comprises the following steps:
the first step is as follows: respectively and uniformly mixing the cubic boron nitride with different contents and titanium carbide to obtain a series of initial materials with different cubic boron nitride contents;
the second step is that: using surface nitriding hard alloy to replace a traditional hard alloy sheet as a matrix, and pressing the initial material obtained in the first step onto the surface nitriding hard alloy matrix through a die;
the third step: and assembling the blocks pressed in the second step into a high-temperature high-pressure synthesis block, and performing high-temperature high-pressure sintering at the pressure of 2GPa and the temperature of 1100 ℃ for 20 minutes to prepare the novel polycrystalline cubic boron nitride composite sheet.
Example 3
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface nitrided hard alloy matrix, which takes hard alloy subjected to surface nitriding treatment as the matrix and takes a ceramic binder and a cubic boron nitride mixed blank as a cubic boron nitride layer.
The surface nitrided hard alloy used in this example was produced by the host edt materials ltd, and had a thickness of 4 mm, a diameter of 58 mm, and a surface nitrided layer of 0.1 mm.
In the embodiment, the cubic boron nitride layer is composed of the following components in parts by mass: 10 parts of cubic boron nitride having an average particle size of 30 μm and 90 parts of titanium carbide having an average particle size of 30 μm.
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface nitrided hard alloy matrix, which comprises the following steps:
the first step is as follows: respectively and uniformly mixing the cubic boron nitride with different contents and titanium carbide to obtain a series of initial materials with different cubic boron nitride contents;
the second step is that: using surface nitriding hard alloy to replace a traditional hard alloy sheet as a matrix, and pressing the initial material obtained in the first step onto the surface nitriding hard alloy matrix through a die;
the third step: and assembling the blocks pressed in the second step into a high-temperature high-pressure synthesis block, and performing high-temperature high-pressure sintering at the pressure of 8 GPa and the temperature of 1800 ℃ for 20 minutes to prepare the novel polycrystalline cubic boron nitride composite sheet.
Example 4
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface nitrided hard alloy matrix, which takes hard alloy subjected to surface nitriding treatment as the matrix and takes a ceramic binder and a cubic boron nitride mixed blank as a cubic boron nitride layer.
The surface nitrided hard alloy used in this example was produced by the host edt materials ltd, and had a thickness of 4 mm, a diameter of 58 mm, and a surface nitrided layer of 0.02 mm.
In the embodiment, the cubic boron nitride layer is composed of the following components in parts by mass: 50 parts of cubic boron nitride with the average particle size of 2 microns, 10 parts of metal aluminum powder with the average particle size of 2 microns and 40 parts of titanium carbide with the average particle size of 2 microns.
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface nitrided hard alloy matrix, which comprises the following steps:
the first step is as follows: respectively and uniformly mixing the cubic boron nitride with different contents and titanium carbide to obtain a series of initial materials with different cubic boron nitride contents;
the second step is that: using surface nitriding hard alloy to replace a traditional hard alloy sheet as a matrix, and pressing the initial material obtained in the first step onto the surface nitriding hard alloy matrix through a die;
the third step: assembling the blocks pressed in the second step into a high-temperature high-pressure synthesis block, and carrying out high-temperature high-pressure sintering at the pressure of 5 GPa and the temperature of 1400 ℃ for 20 minutes to prepare the novel polycrystalline cubic boron nitride composite sheet.
Example 5
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface boronized hard alloy matrix, which takes a hard alloy subjected to surface boronizing treatment as the matrix and a mixed blank of a ceramic binder and cubic boron nitride as a cubic boron nitride layer.
The surface boriding cemented carbide used in this example was produced by dorend materials ltd, and had a thickness of 4 mm, a diameter of 58 mm, and a surface boriding layer of 0.1 mm.
In the embodiment, the cubic boron nitride layer is composed of the following components in parts by mass: 50 parts of cubic boron nitride having an average particle size of 2 μm and 50 parts of titanium carbide having an average particle size of 2 μm.
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a boronized surface cemented carbide substrate, which comprises the following steps:
the first step is as follows: respectively and uniformly mixing the cubic boron nitride with different contents and titanium carbide to obtain a series of initial materials with different cubic boron nitride contents;
the second step is that: pressing the initial material obtained in the first step onto the surface boronized hard alloy substrate through a die by using the surface boronized hard alloy to replace a traditional hard alloy sheet as the substrate;
the third step: and assembling the blocks pressed in the second step into a high-temperature high-pressure synthesis block, and performing high-temperature high-pressure sintering at the pressure of 5.5 GPa and the temperature of 1450 ℃, and preserving the heat for 20 minutes to obtain the novel polycrystalline cubic boron nitride composite sheet.
Example 6
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface boronized hard alloy matrix, which takes a hard alloy subjected to surface boronizing treatment as the matrix and a mixed blank of a ceramic binder and cubic boron nitride as a cubic boron nitride layer.
The surface boriding cemented carbide used in this example was produced by the host edt materials ltd, and had a thickness of 4 mm, a diameter of 58 mm, and a surface boriding layer of 0.01 mm.
In the embodiment, the cubic boron nitride layer is composed of the following components in parts by mass: 90 parts of cubic boron nitride with the average particle size of 0.1 micron and 10 parts of metal aluminum powder with the average particle size of 1 micron.
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a boronized surface cemented carbide substrate, which comprises the following steps:
the first step is as follows: respectively and uniformly mixing the cubic boron nitride with different contents and titanium carbide to obtain a series of initial materials with different cubic boron nitride contents;
the second step is that: pressing the initial material obtained in the first step onto the surface boronized hard alloy substrate through a die by using the surface boronized hard alloy to replace a traditional hard alloy sheet as the substrate;
the third step: and assembling the blocks pressed in the second step into a high-temperature high-pressure synthesis block, and performing high-temperature high-pressure sintering at the pressure of 2GPa and the temperature of 1100 ℃ for 20 minutes to prepare the novel polycrystalline cubic boron nitride composite sheet.
Example 7
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface boronized hard alloy matrix, which takes a hard alloy subjected to surface boronizing treatment as the matrix and a mixed blank of a ceramic binder and cubic boron nitride as a cubic boron nitride layer.
The surface boriding cemented carbide used in this example was produced by dorend materials ltd, and had a thickness of 4 mm, a diameter of 58 mm, and a surface boriding layer of 1 mm.
In the embodiment, the cubic boron nitride layer is composed of the following components in parts by mass: 10 parts of cubic boron nitride having an average particle size of 30 μm and 90 parts of titanium carbide having an average particle size of 30 μm.
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a boronized surface cemented carbide substrate, which comprises the following steps:
the first step is as follows: respectively and uniformly mixing the cubic boron nitride with different contents and titanium carbide to obtain a series of initial materials with different cubic boron nitride contents;
the second step is that: pressing the initial material obtained in the first step onto the surface boronized hard alloy substrate through a die by using the surface boronized hard alloy to replace a traditional hard alloy sheet as the substrate;
the third step: and assembling the blocks pressed in the second step into a high-temperature high-pressure synthesis block, and performing high-temperature high-pressure sintering at the pressure of 8 GPa and the temperature of 1800 ℃ for 20 minutes to prepare the novel polycrystalline cubic boron nitride composite sheet.
Example 8
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a surface boronized hard alloy matrix, which takes a hard alloy subjected to surface boronizing treatment as the matrix and a mixed blank of a ceramic binder and cubic boron nitride as a cubic boron nitride layer.
The surface boriding cemented carbide used in this example was produced by dorend materials ltd, and had a thickness of 4 mm, a diameter of 58 mm, and a surface boriding layer of 0.2 mm.
In the embodiment, the cubic boron nitride layer is composed of the following components in parts by mass: 50 parts of cubic boron nitride with the average particle size of 2 microns, 10 parts of metal aluminum powder with the average particle size of 2 microns and 40 parts of titanium carbide with the average particle size of 2 microns.
The embodiment provides a preparation method of a polycrystalline cubic boron nitride composite sheet with a boronized surface cemented carbide substrate, which comprises the following steps:
the first step is as follows: respectively and uniformly mixing the cubic boron nitride with different contents and titanium carbide to obtain a series of initial materials with different cubic boron nitride contents;
the second step is that: pressing the initial material obtained in the first step onto the surface boronized hard alloy substrate through a die by using the surface boronized hard alloy to replace a traditional hard alloy sheet as the substrate;
the third step: assembling the blocks pressed in the second step into a high-temperature high-pressure synthesis block, and carrying out high-temperature high-pressure sintering at the pressure of 5 GPa and the temperature of 1400 ℃ for 20 minutes to prepare the novel polycrystalline cubic boron nitride composite sheet.
Claims (4)
1. The utility model provides a surface nitriding carbide base member glomerocryst cubic boron nitride composite piece, includes carbide base member and glomerocryst cubic boron nitride layer, its characterized in that: and nitriding the surface of the hard alloy matrix to form a nitriding layer, and sintering the nitriding layer and the polycrystalline cubic boron nitride layer into an integral structure at high temperature and high pressure.
2. The surface-nitrided cemented carbide matrix polycrystalline cubic boron nitride compact of claim 1, wherein: the thickness of the surface nitriding layer of the hard alloy is 0.005-0.1 mm.
3. The utility model provides a surface boriding carbide base member glomerocryst cubic boron nitride composite sheet, includes carbide base member and glomerocryst cubic boron nitride layer, its characterized in that: and carrying out boronizing treatment on the surface of the hard alloy matrix to form a boronizing layer, and sintering the boronizing layer and the polycrystalline cubic boron nitride layer into an integral structure at high temperature and high pressure.
4. The surface-boriding cemented carbide substrate polycrystalline cubic boron nitride compact of claim 3, wherein: the surface boronizing layer of the hard alloy is 0.005-0.1 mm thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021006431.6U CN212833506U (en) | 2020-06-04 | 2020-06-04 | Polycrystalline cubic boron nitride composite sheet with surface nitrided or boronized hard alloy matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021006431.6U CN212833506U (en) | 2020-06-04 | 2020-06-04 | Polycrystalline cubic boron nitride composite sheet with surface nitrided or boronized hard alloy matrix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212833506U true CN212833506U (en) | 2021-03-30 |
Family
ID=75170618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021006431.6U Active CN212833506U (en) | 2020-06-04 | 2020-06-04 | Polycrystalline cubic boron nitride composite sheet with surface nitrided or boronized hard alloy matrix |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212833506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113754445A (en) * | 2020-06-04 | 2021-12-07 | 河南领科材料有限公司 | Hard alloy matrix polycrystalline cubic boron nitride composite sheet with surface nitriding or boronizing treatment and preparation method thereof |
-
2020
- 2020-06-04 CN CN202021006431.6U patent/CN212833506U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113754445A (en) * | 2020-06-04 | 2021-12-07 | 河南领科材料有限公司 | Hard alloy matrix polycrystalline cubic boron nitride composite sheet with surface nitriding or boronizing treatment and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107829054B (en) | A kind of high-strength tenacity base titanium carbonitride material and preparation method thereof | |
| CN105734390B (en) | A kind of preparation method for the polycrystalline cubic boron nitride compound material that high-entropy alloy combines | |
| KR100823760B1 (en) | Method of producing an abrasive product containing cubic boron nitride | |
| RU2515663C2 (en) | Composite material based on boron carbide | |
| CN107098704A (en) | A kind of preparation method of polycrystalline cubic boron nitride sintered material | |
| CN111057925B (en) | Polycrystalline diamond cubic boron nitride composite sheet and preparation method thereof | |
| KR20030048005A (en) | Method of producing an abrasive product containing diamond | |
| CN110257681B (en) | Polycrystalline cubic boron nitride composite sheet and preparation method thereof | |
| US5032353A (en) | Sintering method for producing structural components of an intermetallic compound | |
| CN109439991A (en) | A kind of TiB2Whisker high temperature Strengthening and Toughening Ti (C, N) base metal-ceramic material preparation method | |
| CN212833506U (en) | Polycrystalline cubic boron nitride composite sheet with surface nitrided or boronized hard alloy matrix | |
| CN110342943A (en) | The method and its application of binder free plycrystalline diamond boron nitride bulk are synthesized under industrial stresses | |
| CN111266573B (en) | Preparation method of polycrystalline cubic boron nitride composite sheet | |
| CN108118297B (en) | Polycrystalline cubic boron nitride composite sheet and preparation method thereof | |
| EP0816304B1 (en) | Ceramic bonded cubic boron nitride compact | |
| CN212598874U (en) | Polycrystalline cubic boron nitride composite sheet | |
| CN113754445A (en) | Hard alloy matrix polycrystalline cubic boron nitride composite sheet with surface nitriding or boronizing treatment and preparation method thereof | |
| CN113751711A (en) | Polycrystalline cubic boron nitride composite sheet and preparation method thereof | |
| EP0056596A1 (en) | Improved silicon carbide composite and process for production | |
| CN113941708A (en) | Preparation method for enhancing interface bonding capability of PcBN composite sheet | |
| JPS5888171A (en) | Manufacture of high density silicon nitride sintered body | |
| CN113416078A (en) | Non-stoichiometric titanium boride and high-entropy boride ceramic prepared from same | |
| JP2020059079A (en) | Sintered material split body, cutting tool element using sinter material split body, and method of manufacturing the same | |
| KR20000047918A (en) | Sintered Body Having High Hardness and High Strength | |
| JPH0368938B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |