CN101554662A - Method for preparing ultra-hard material poly-crystal membrane on external surface of rolling body of bearing and product thereof - Google Patents
Method for preparing ultra-hard material poly-crystal membrane on external surface of rolling body of bearing and product thereof Download PDFInfo
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- CN101554662A CN101554662A CNA2009100649603A CN200910064960A CN101554662A CN 101554662 A CN101554662 A CN 101554662A CN A2009100649603 A CNA2009100649603 A CN A2009100649603A CN 200910064960 A CN200910064960 A CN 200910064960A CN 101554662 A CN101554662 A CN 101554662A
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Abstract
The invention discloses a method for preparing an ultra-hard material poly-crystal membrane on the external surface of the rolling body of a bearing and a product thereof, which is characterized in that the ultra-hard material grains such as diamond, cubic boron nitride, and the like and adhesive grains are sintered on the external surface of the rolling body of the bearing by a high-temperature and high-pressure method; the diameters of the ultra-hard material and the adhesive grains rang from 3nm to 0.1mm; the rolling body of the bearing, the ultra-hard material grains and the adhesive grains are sintered at the temperature of 900-1700 DEG C and the pressure of 3-7 GPa to prepare an ultra-hard material poly-crystal membrane; and the thickness of the sintered ultra-hard material poly-crystal membrane on the bearing rolling body ranges from 100nm to 20mm. The product prepared by the method can lead the rolling body to have good wearability, small friction coefficient, high heat conductivity and deformation resistance, lead the bearing with the rolling body of the ultra-hard material poly-crystal membrane to run normally at the conditions of high-speed, high-temperature, high-vacuum and strong corrosion and prolong the service life of the bearing.
Description
Technical field
The rolling element outer surface that the present invention relates to a kind of bearing prepares the method for film, especially relates to method and product that a kind of rolling element outer surface at bearing prepares ultra-hard material poly-crystal membrane.
Background technology
Bearing all is a kind of indispensable part in many engineering goods, and the bearing of Shi Yonging is generally made with metal such as bearing steel or stainless steel now, existing shortcoming be bearing easy to wear, get rusty, corrode, often need and complicated maintenance work.In addition, along with the day by day raising of modern industry, require the reliability of supporting with it bearing also should improve to the machinery equipment reliability requirement thereupon.Bearing arrangement miniaturization, precision sizeization, speed high speed, temperature high temperatureization, and also more and more higher for the requirement of harsh working conditions such as high vacuum, anticorrosion. adopt the bearing of steel material can't satisfy for some performance.A large amount of evidences, rolling element is a part the weakest in the bearing in the bearing of working under high velocity environment, it all is that wherein the bearing roller wearing and tearing are one of key factors by due to the rolling element generation fatigue rupture in various degree that the high-speed bearing of the overwhelming majority lost efficacy.
Be the bearing that acquisition has higher hardness, wearability and fatigue strength performance, people have adopted many new design and processes, for example: use the ceramic structure rolling bearing of silicon nitride or silicon-nitride-based ceramic composite to substitute bearing steel or stainless steel bearing; Utilization Ni-P and composite electrodeposition method are at the outside plating diamond coating of rolling bearing.But more or less there is weak point in these methods, and the better bearing of development serviceability still is the problem that needs research.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing, use this method and can make the rolling element that a kind of outer surface has ultra-hard material poly-crystal membrane, thisly have the rolling element of ultra-hard material poly-crystal membrane can make the anti-wear performance of rolling element good, coefficient of friction is little, thermal conductivity is high, resistance to deformation, the bearing that makes the rolling element that has ultra-hard material poly-crystal membrane also can operate as normal under harsh conditions such as high speed, high temperature, high vacuum, corrosivity be strong.
The present invention is by the following technical solutions:
A kind of method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing, the material of bearing roller is a metal, pottery or composite, it is characterized in that: the raw material that is used to prepare the rolling element ultra-hard material poly-crystal membrane of bearing is superhard material particle and adhesive particle, the diameter of superhard material particle and adhesive particle is between 3nm～0.1mm, the superhard material particle is diamond or cubic boron nitride, the rolling element of bearing and superhard material particle and adhesive particle, in temperature is 900 ℃～1700 ℃, pressure is sintering under the condition of 3GPa～7GPa, and the ultra-hard material poly-crystal membrane thickness on the bearing roller that sintering goes out is between 100nm～20mm.
Further, described bearing roller, superhard material particle and adhesive particle were pressurized to 5.5Gpa in 10～1000 seconds, were heated to 1550 ℃, and kept temperature, pressure 60～3600 seconds.
Further, described bearing roller, superhard material particle and adhesive particle were pressurized to 5.5Gpa in 10～1000 seconds, were heated to 1400 ℃, and kept temperature, pressure 60～3600 seconds.
Further, described adhesive particle is the metal adhesive particle, the composition of metal adhesive particle be Co or/and Al or/and Ni or/and Ti or/and Ni-Al or/and Co-Al or/and Mo or/and Cr or/and Ca or/and Fe or/and Zr or/and Bi.
Further, described adhesive particle is the vitrified bonding particle, vitrified bonding particle composition be TiN or/and Si or/and AlN or/and Al
2O
3Or/and Si
3N
4Or/and in the 4th, 5,6 cycles carbide, nitride, boride, silicide and the carbonitride of metal or/and the solutionizing compound that carbide, nitride, boride and cobalt, nickel form.
Further, the diameter of described superhard material particle and adhesive particle at 0.3 μ m between the 50 μ m.
Further, between the 0.3 μ m, the scope of temperature and pressure is the diameter of described superhard material particle and adhesive particle: 1300～1600 ℃ of temperature, pressure 4.5～6.0Gpa at 100nm.
Further, at the rolling element outer surface one deck ultra-hard material poly-crystal membrane is arranged, the thickness of this ultra-hard material poly-crystal membrane is between 100nm～20mm.
Further, the thickness of described ultra-hard material poly-crystal membrane is between 0.1mm～2mm.
Further, the thickness of described ultra-hard material poly-crystal membrane is at 100nm～100 μ m.
The invention has the beneficial effects as follows: the utility model provides a kind of method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing, method has prepared one deck ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing thus, the bearing that ultra-hard material poly-crystal membrane is arranged on the rolling element, avoided getting rusty, reduce friction loss in rolling, strengthened bearing rigidity, prolonged service life of bearing, improved serviceability.The related method of this invention can be applicable in the various bearings, as high-speed electric expreess locomotive main shaft bearing, machine tool mainshaft bearing, dental drill bearing, high speed bistrique bearing, instrument bearing, hard disk drive bearing etc.Simultaneously also can be used as building doors and windows roller, case and bag roller, skating shoe roller etc.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize and obtain by specifically noted structure in following specification or the accompanying drawing.
Description of drawings
Fig. 1 is the structural representation that the outer surface of utilization the inventive method preparation has the cylindrical rolling element of ultra-hard material poly-crystal membrane;
Fig. 2 is the conical rolling element structural representation that the outer surface of utilization the inventive method preparation has ultra-hard material poly-crystal membrane;
Fig. 3 is the spherical rolling element structural representation that the outer surface of utilization the inventive method preparation has ultra-hard material poly-crystal membrane.
Specific embodiments
Below in conjunction with drawings and Examples the present invention is further described:
A kind of method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing, the raw material that is used to prepare ultra-hard material poly-crystal membrane is superhard material particle and adhesive particle, the diameter of superhard material particle and adhesive particle at 3nm between the 1mm, bearing roller and superhard material particle and the adhesive particle of surface through hacking, blasting treatment, 900 ℃～1700 ℃ of temperature, ultra-hard material poly-crystal membrane thickness on the bearing roller that sintering under the condition of pressure 3GPa～7GPa, sintering go out is between 100nm～20mm.The superhard material particle is diamond, cubic boron nitride or other superhard material.
Binding agent can be the metal adhesive particle, also can be the vitrified bonding particle, wherein the metal adhesive particle is metallic particles such as Co, Al, Ni, Ti, Ni-Al, Co-Al, Mo, Cr, Ca, Fe, Zr, Bi, the metal adhesive particle can be a kind of in the above metallic particles, also can be several combination arbitrarily in them.The vitrified bonding particle is TiN, Si, AlN, Al
2O
3, Si
3N
4, carbide, nitride, boride, silicide and the carbonitride of metal in the 4th, 5,6 cycles, the solutionizing compound that carbide, nitride, boride and cobalt, nickel form.The vitrified bonding particle can be a kind of in the above-mentioned particle, also can be combinations several in them.Wherein, 4th, carbide, nitride, boride, silicide and the carbonitride of metal in 5,6 cycles, the vitrified bonding particle can be in them a kind of, can perhaps be carbide, nitride, boride, silicide and the carbonitride of metal in the 4th, 5,6 cycles and the combination of above-mentioned other ceramic particle also for several combination arbitrarily in carbide, nitride, boride, silicide and the carbonitride of metal in the 4th, 5,6 cycles.For carbonitride, the solutionizing compound that carbide, nitride, boride and cobalt, nickel form, the vitrified bonding particle can be for wherein a kind of, also can be wherein several combination arbitrarily, perhaps be carbonitride, the solutionizing compound that carbide, nitride, boride and cobalt, nickel form and the combination of other ceramic particle.
Rolling element outer surface by the bearing of the inventive method preparation has ultra-hard material poly-crystal membrane, and the thickness of this ultra-hard material poly-crystal membrane is between 100nm～20mm, particularly in the interval of 0.1mm～2mm.The thickness of this ultra-hard material poly-crystal membrane can be as thin as nanoscale (100nm～100 μ m), for nano level film, can adopt the outer surface that at first emulsion of nanoscale superhard material particle and adhesive particle is coated on bearing roller on the technology, the method for carrying out sintering then under HTHP obtains.
Embodiment one:
Fig. 1 is the structural representation that the cylindrical rolling element of ultra-hard material poly-crystal membrane is arranged according to the outer surface of the inventive method preparation, is made up of at the ultra-hard material poly-crystal membrane 2 of its outer surface sintering under rolling element 1, the HTHP.The rolling element 1 of this bearing is with metal material, ceramic material, composite manufacturings such as common stainless steel, bearing steel, carbide alloy, and ultra-hard material poly-crystal membrane 2 then is to utilize cubic hydraulic press to adopt the high temperature and high pressure method preparation.During preparation, at first the diamond particles of the bearing roller 1 of diameter 15mm and average diameter 10 μ m and the metal Co particle that is used as binding agent are put in the Mo metal cup of adding a cover, the content 6wt% of metal Co particle, the content 94wt% of diamond particles, put into the assembly that constitutes by graphite-pipe, pottery or leaf wax salt etc. afterwards, by cubic hydraulic press heating and pressurization, realize HTHP sintering to superhard material particle and cementing metal Co particle.
Sintering process is: at first be forced into 5.5GPa by 0 in 60 seconds, re-use the Mo metal cup that will contain raw material in 60 seconds and be heated to 1550 ℃, and the Mo metal cup kept 600 seconds under 1550 ℃/5.5GPa condition, directly cooling goes to press afterwards, take out assembly at last and the workpiece that is obtained is carried out machined, the thickness that acquisition is coated on rolling element 1 outer surface of bearing is the ultra-hard material poly-crystal membrane 2 of 1mm, and this ultra-hard material poly-crystal membrane 2 is the polycrystalline diamond thick film layers.
The ultra-hard material poly-crystal membrane 2 of rolling element outer surface can be as thin as nanoscale 100nm～100 μ m, for nano level film, can adopt at first the emulsion with nanoscale superhard material particle and adhesive particle to be coated on bearing roller 1 outer surface on the technology, the method for carrying out sintering then under HTHP obtains.
In order to strengthen combining of ultra-hard material poly-crystal membrane 2 and rolling bearing rolling element 1, usually need employed bearing roller 1 is carried out surface treatment, for example rolling element 1 is carried out hacking processing, blasting treatment or makes waveform, thread-shaped decorative pattern at rolling element 1 outer surface.
Embodiment two:
As shown in Figure 1, prepare the cylindrical rolling element that outer surface has ultra-hard material poly-crystal membrane according to the inventive method, it consists of rolling element 1, ultra-hard material poly-crystal membrane 2.Rolling element 1 is by the bearing steel manufacturing, and ultra-hard material poly-crystal membrane 2 is polycrystalline cubic boron nitride sintered bodies, utilizes cubic hydraulic press to adopt the high temperature and high pressure method preparation.During preparation, at first with bearing roller 1 and the cubic boron nitride particle of average diameter 10 μ m and metal A l, the Co particle that is used as binding agent of diameter 15mm, ceramic TiN, Al
2O
3Particle places the metal Nb cup of adding a cover, and making the metal of binding agent and the total content of ceramic particle is 14wt%, the content 86wt% of cubic boron nitride particle; Put into the assembly that constitutes by graphite-pipe, pottery or leaf wax salt etc. afterwards,, realize HTHP sintering superhard material particle and cementing metal, ceramic particle by cubic hydraulic press heating and pressurization.
Sintering process is: at first be forced into 5.5GPa by 0 in 60 seconds, re-use the Mo metal cup that will contain raw material in 60 seconds and be heated to 1550 ℃, and the Mo metal cup kept 600 seconds under 1550 ℃/5.5GPa condition, directly cooling goes to press afterwards, take out assembly at last and the workpiece that is obtained is carried out machined, the thickness that acquisition is coated on rolling element 1 outer surface is the ultra-hard material poly-crystal membrane 2 of 1mm, and this ultra-hard material poly-crystal membrane 2 is the polycrystalline cubic boron nitride thick film layers.
Embodiment three:
As shown in Figure 2, the conical rolling element of ultra-hard material poly-crystal membrane is arranged according to the outer surface of the rolling element of the inventive method preparation, rolling element 3 be shaped as taper shape, rolling element 3 is ceramics.Earlier rolling element 3 is carried out hacking processing, blasting treatment or make waveform, thread-shaped decorative pattern at rolling element 3 outer surfaces; To have the ceramic rolling element 3 and cubic boron nitride (c-BN), TiN and Al particle of cone shape, and put into cubic hydraulic press, wherein the granularity of these three kinds of particles is 2 μ m, and three kinds of particles are 80: 12: 8 by mass percentage; Adopt and at first in 60 seconds, be forced into 5.5Gpa by 0, re-use the Mo metal cup that will contain raw material in 60 seconds and be heated to 1400 ℃, and the Mo metal cup kept 300 seconds under 1400 ℃/5.5GPa condition, directly cooling goes to press afterwards, take out assembly at last and the workpiece that is obtained is carried out machined, the thickness that acquisition is coated on rolling element 3 outer surfaces of bearing is the polycrystalline cubic boron nitride thick film layers 4 of 2mm, and this bearing net shape is a cone shape.
Embodiment four:
As shown in Figure 3, the spherical rolling element 5 that ultra-hard material poly-crystal membrane is arranged according to the outer surface of the rolling element of the inventive method preparation, the carbide alloy rolling element 5 and the diamond particles of average diameter 5 μ m and the metal Si particle that is used as binding agent that will have the diameter 5mm of spherical structure, wherein metal Si granule content is 10wt%, other has the B powder of trace, diamond particles content is 90wt%, be put in the Mo metal cup of the spherical diameter 8mm that adds a cover, afterwards a plurality of Mo metal cups are put into by graphite-pipe, in the assembly that pottery or leaf wax salt etc. constitute, add the medium that the Mo metal cup is separated but can pressure transmission between each Mo metal cup.Use the cubic hydraulic press pressurization of heating, sintering process is: at first be forced into 5.5GPa by 0 in 60 seconds, re-use the Mo metal cup that will contain raw material in 60 seconds and be heated to 1450 ℃, and the Mo metal cup kept 900 seconds under 1450 ℃/5.5GPa condition, directly cooling goes to press afterwards, take out assembly at last and the workpiece that is obtained is carried out machined, obtain to be coated with the spherical ball that thickness is 0.5mm polycrystalline diamond thick film layers 6.
Embodiment five:
As shown in Figure 3, according to the bearing ball of the inventive method preparation at the outer surface sintering ultra-hard material poly-crystal membrane 6 of rolling element 5, to have spherical structure diameter 5mm carbide alloy rolling element 5 and average diameter 3 μ m cubic boron nitride particle and be used as cementing metal Al-Co and ceramic TiC, the AlN particle, wherein cementing metal Al-Co and ceramic TiC, the total content of AlN particle is 25wt%, cubic boron nitride particle content is 75wt%, placing the diameter of adding a cover is the spherical Mo metal cup of 8mm, afterwards a plurality of Mo metal cups are put into by graphite-pipe, in the assembly that pottery or leaf wax salt etc. constitute, add the medium that the Mo metal cup is separated but can pressure transmission between each Mo metal cup.
Sintering process is: at first be forced into 5.8GPa by 0 in 120 seconds, re-use the Mo metal cup that will contain raw material in 60 seconds and be heated to 1500 ℃, and the Mo metal cup kept 300 seconds under 1500 ℃/5.8GPa condition, directly cooling goes to press afterwards, take out assembly at last and the workpiece that is obtained is carried out machined, the thickness that acquisition is coated on rolling element 5 outer surfaces is the ultra-hard material poly-crystal membrane 6 of 0.3mm, and this ultra-hard material poly-crystal membrane 6 is the polycrystalline cubic boron nitride thick film layers.
Embodiment six:
To have diameter 10mm, the carborundum of the cylindrical structure of high 30mm or steel alloy composite material of silicon carbide rolling element outside coated with nano level (diamond particles (content is 92wt%) and metal Co particle (content 8wt%) emulsion of 3nm～100nm), through repeatedly applying and oven dry, obtain diamond particles and the metal Co stratum granulosum of thickness less than 0.1mm, put into the Nb metal cup of adding a cover afterwards, the metal cup size is greater than the cylinder rolling element, and the place, crack inserts diameter greater than 10 μ m diamond particles betwixt.Metal cup is put into the assembly that is made of graphite-pipe, pottery or leaf wax salt etc., by cubic hydraulic press heating and pressurization.Sintering process is: at first be forced into 5.0GPa by 0 in 60 seconds, re-use the Nb metal cup that will contain raw material in 60 seconds and be heated to 1400 ℃, and the Nb metal cup kept 100 seconds under 1400 ℃/5.0GPa condition, directly cooling goes to press afterwards, take out assembly at last and the workpiece that is obtained is carried out machined, obtain to be coated with the cylindrical structure bearing that thickness is the 0.05mm polycrystalline diamond layer.
To sum up, the rolling element that uses this method to obtain with ultra-hard material poly-crystal membrane, its whole structure is structures such as cylindrical, taper shape or sphere.The material of this rolling element can be ceramic materials such as materials such as steel alloy, bearing steel, stainless steel, carbide alloy and titanium nitride, silicon nitride, also can be other alloy materials, composite.The thick-film material of the outside sintering of this bearing roller can be superhard materials such as polycrystalline diamond, polycrystalline cubic boron nitride or DLC.
The rolling element of this bearing can be roller bearing, also can be ball.This rolling element can be used for high-speed electric expreess locomotive main shaft bearing, machine tool mainshaft bearing, dental drill bearing, high speed bistrique bearing, instrument with various bearings such as bearing, hard disk drive bearings, also can be used as building doors and windows roller, case and bag roller, skating shoe roller etc.Bearing, roller that other outer surfaces have the rolling element of ultra-hard material poly-crystal membrane also should belong to protection scope of the present invention.
Claims (10)
1, a kind of method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing, the material of bearing roller is a metal, pottery or composite, it is characterized in that: the raw material that is used to prepare the rolling element ultra-hard material poly-crystal membrane of bearing is superhard material particle and adhesive particle, the diameter of superhard material particle and adhesive particle is between 3nm～0.1mm, the superhard material particle is diamond or cubic boron nitride, the rolling element of bearing and superhard material particle and adhesive particle, in temperature is 900 ℃～1700 ℃, pressure is sintering under the condition of 3GPa～7GPa, and the ultra-hard material poly-crystal membrane thickness on the bearing roller that sintering goes out is between 100nm～20mm.
2, the method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing according to claim 1, it is characterized in that: described bearing roller, superhard material particle and adhesive particle were pressurized to 5.5Gpa in 10～1000 seconds, be heated to 1550 ℃, and kept temperature, pressure 60～3600 seconds.
3, the method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing according to claim 1, it is characterized in that: described bearing roller, superhard material particle and adhesive particle were pressurized to 5.5Gpa in 10～1000 seconds, be heated to 1400 ℃, and kept temperature, pressure 60～3600 seconds.
4, the method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing according to claim 1, it is characterized in that: described adhesive particle is the metal adhesive particle, the composition of metal adhesive particle be Co or/and Al or/and Ni or/and Ti or/and Ni-Al or/and Co-Al or/and Mo or/and Cr or/and Ca or/and Fe or/and Zr or/and Bi.
5, according to claim 1ly prepare the method for ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing, it is characterized in that: described adhesive particle is the vitrified bonding particle, vitrified bonding particle composition be TiN or/and Si or/and AlN or/and Al
2O
3Or/and Si
3N
4Or/and in the 4th, 5,6 cycles carbide, nitride, boride, silicide and the carbonitride of metal or/and the solutionizing compound that carbide, nitride, boride and cobalt, nickel form.
6, according to claim 1ly prepare the method for ultra-hard material poly-crystal membrane, it is characterized in that at the rolling element outer surface of bearing: the diameter of described superhard material particle and adhesive particle at 0.3 μ m between the 50 μ m.
7, according to each described method for preparing ultra-hard material poly-crystal membrane at the rolling element outer surface of bearing among the claim 1-6, it is characterized in that: the diameter of described superhard material particle and adhesive particle at 100nm between the 0.3 μ m, the scope of temperature and pressure is: 1300～1600 ℃ of temperature, pressure 4.5～6.0Gpa.
8, a kind of outer surface has the rolling element of ultra-hard material poly-crystal membrane, it is characterized in that: at the rolling element outer surface one deck ultra-hard material poly-crystal membrane is arranged, the thickness of this ultra-hard material poly-crystal membrane is between 100nm～20mm.
9, outer surface according to claim 8 has the rolling element of ultra-hard material poly-crystal membrane, it is characterized in that: the thickness of described ultra-hard material poly-crystal membrane is between 0.1mm～2mm.
10, outer surface according to claim 8 has the rolling element of ultra-hard material poly-crystal membrane, it is characterized in that: the thickness of described ultra-hard material poly-crystal membrane is at 100nm～100 μ m.
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| CN2009100649603A CN101554662B (en) | 2009-05-20 | 2009-05-20 | Method for preparing ultra-hard material poly-crystal membrane on external surface of rolling body of bearing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502614A (en) * | 2011-11-09 | 2012-06-20 | 广东奔朗新材料股份有限公司 | Pretreatment method for micro diamond powder |
| CN103624262A (en) * | 2013-11-27 | 2014-03-12 | 深圳市海明润实业有限公司 | Heat-resistant polycrystalline diamond compact and preparation method thereof |
| CN108516830A (en) * | 2018-05-30 | 2018-09-11 | 史茜赟 | A kind of preparation method of toughened antiwear grinding-material |
| CN109681530A (en) * | 2019-02-28 | 2019-04-26 | 桂林星钻超硬材料有限公司 | A kind of rolling bearing |
| CN113999035A (en) * | 2021-11-25 | 2022-02-01 | 桂林特邦新材料有限公司 | Rod crystal/plate crystal ZrB2PCBN composite sheet of (-ZrN) -AlN composite ceramic and preparation method thereof |
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2009
- 2009-05-20 CN CN2009100649603A patent/CN101554662B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502614A (en) * | 2011-11-09 | 2012-06-20 | 广东奔朗新材料股份有限公司 | Pretreatment method for micro diamond powder |
| CN103624262A (en) * | 2013-11-27 | 2014-03-12 | 深圳市海明润实业有限公司 | Heat-resistant polycrystalline diamond compact and preparation method thereof |
| CN103624262B (en) * | 2013-11-27 | 2016-09-21 | 深圳市海明润超硬材料股份有限公司 | A kind of Heat-resistant polycrystalline diamond compact and preparation method thereof |
| CN108516830A (en) * | 2018-05-30 | 2018-09-11 | 史茜赟 | A kind of preparation method of toughened antiwear grinding-material |
| CN109681530A (en) * | 2019-02-28 | 2019-04-26 | 桂林星钻超硬材料有限公司 | A kind of rolling bearing |
| CN113999035A (en) * | 2021-11-25 | 2022-02-01 | 桂林特邦新材料有限公司 | Rod crystal/plate crystal ZrB2PCBN composite sheet of (-ZrN) -AlN composite ceramic and preparation method thereof |
| CN113999035B (en) * | 2021-11-25 | 2023-03-10 | 桂林特邦新材料有限公司 | Rod crystal/plate crystal ZrB 2 PCBN composite sheet of (-ZrN) -AlN composite ceramic and preparation method thereof |
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|---|---|
| CN101554662B (en) | 2011-06-29 |
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