CN105209649A - Superhard constructions & methods of making same - Google Patents
Superhard constructions & methods of making same Download PDFInfo
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- CN105209649A CN105209649A CN201480028602.6A CN201480028602A CN105209649A CN 105209649 A CN105209649 A CN 105209649A CN 201480028602 A CN201480028602 A CN 201480028602A CN 105209649 A CN105209649 A CN 105209649A
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- superhard
- crystal grain
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- polycrystalline
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- 238000010276 construction Methods 0.000 title claims abstract description 12
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- 239000013078 crystal Substances 0.000 claims description 118
- 239000010432 diamond Substances 0.000 claims description 111
- 229910003460 diamond Inorganic materials 0.000 claims description 110
- 238000005245 sintering Methods 0.000 claims description 41
- 239000003054 catalyst Substances 0.000 claims description 30
- 230000008569 process Effects 0.000 claims description 30
- 229910017052 cobalt Inorganic materials 0.000 claims description 24
- 239000010941 cobalt Substances 0.000 claims description 24
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 24
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- 229910001573 adamantine Inorganic materials 0.000 claims description 12
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- 239000003921 oil Substances 0.000 claims description 3
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- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 3
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
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- 150000004767 nitrides Chemical class 0.000 claims description 2
- 238000009527 percussion Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 229910052814 silicon oxide Inorganic materials 0.000 claims 1
- 239000000843 powder Substances 0.000 description 24
- 238000004220 aggregation Methods 0.000 description 18
- 230000002776 aggregation Effects 0.000 description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
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- 229910009043 WC-Co Inorganic materials 0.000 description 5
- 229910000001 cobalt(II) carbonate Inorganic materials 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 229910052582 BN Inorganic materials 0.000 description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 3
- ZOTKGJBKKKVBJZ-UHFFFAOYSA-L cobalt(2+);carbonate Chemical compound [Co+2].[O-]C([O-])=O ZOTKGJBKKKVBJZ-UHFFFAOYSA-L 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
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- 238000010306 acid treatment Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- ZJRWDIJRKKXMNW-UHFFFAOYSA-N carbonic acid;cobalt Chemical compound [Co].OC(O)=O ZJRWDIJRKKXMNW-UHFFFAOYSA-N 0.000 description 2
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- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 2
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- 208000013201 Stress fracture Diseases 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- JPNWDVUTVSTKMV-UHFFFAOYSA-N cobalt tungsten Chemical compound [Co].[W] JPNWDVUTVSTKMV-UHFFFAOYSA-N 0.000 description 1
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- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
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- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
Abstract
A superhard polycrystalline construction comprises a body of polycrystalline superhard material comprising a superhard phase, and a non-superhard phase dispersed in the superhard phase, the superhard phase comprising a plurality of inter-bonded superhard grains. The non-superhard phase comprises particles or grains that do not chemically react with the superhard grains and form less than around 10 volume % of the body of polycrystalline superhard material. There is also disclosed a method of forming such a superhard polycrystalline construction.
Description
Technical field
The disclosure relates to superhard construction body and manufactures the method for this type of structure, particularly but not exclusively relate to the structure comprising polycrystalline diamond (PCD) structure being connected to base material, and comprise its instrument, particularly but not exclusively crack for rock or hole, or for piercing in ground.
Background technology
Polycrystalline superhard material, as polycrystalline diamond (PCD) and polycrystal cubic boron nitride (PCBN) can be used for multiple for cutting, machining, hole or crack hard or abrasive material as rock, metal, pottery, matrix material and the instrument containing wood material.Especially, the instrument insert comprising the cutting element form of PCD material is widely used in and pierces in ground with in the drill bit of recover petroleum or Sweet natural gas.The restriction of the fragmentation of superhard material may be subject to the work-ing life of sintered carbide tools insert, comprise the restriction being subject to spallation He peeling off, or be subject to the restriction of instrument insert wearing and tearing.
Cutting element, as for those of rock drill bit or other cutting tool, usually have the body (body) of base material form, it has end/surface, interface and forms by such as sintering process the superhard material joining the cutting lay of the interface surface of this base material to.This base material is made up of tungsten-cobalt carbide alloy usually, be sometimes referred to as cemented tungsten carbide, this ultra hard material layer normally polycrystalline diamond (PCD), polycrystal cubic boron nitride (PCBN) or thermally-stabilised product TSP material as thermally-stabilised polycrystalline diamond.
Polycrystalline diamond (PCD) is an example of superhard material (also referred to as super hard abrasive or super hard material), it comprises the diamond crystals of a large amount of alternate (inter-grown), constitutes the skeleton thing (mass) limiting gap between diamond crystals.PCD material comprises the diamond at least about 80 volume % usually, and conventionally by imposing the hyperpressure that is such as greater than about 5GPa to the aggregation of diamond crystals and at least about 1, the temperature of 200 DEG C manufactures.The material of filling this gap wholly or in part can be called filler or adhesive material.
PCD is formed usually under the existence of sintering aid as cobalt, and described sintering aid facilitates the alternate of diamond crystals.Be suitable for the sintering aid of PCD usually also referred to as adamantine solvent-catalyst material, this is because it dissolves diamond and its reppd function of catalysis to a certain extent.Be interpreted as it is the material that can promote the direct diamond-diamond intergrowth between diamond film or diamond crystals under the pressure and temperature condition of diamond thermodynamic stable for adamantine solvent-catalyst.Therefore, residual solvent-catalystic material can be filled with wholly or in part in the gap of sintering PCD product.The most normally, PCD is usually formed on cobalt-knot wolfram varbide base material, and this base material provides the source of the cobalt solvent-catalyst for PCD.Can not promote that the be correlated with material of alternate of the substance between diamond crystals itself can form the secure bond with diamond crystals, but not be suitable for the solvent-catalyst of PCD sintering.
The cemented tungsten carbide that can be used for being formed suitable substrate is by mixing tungsten carbide particle/crystal grain and cobalt and being made up of the carbide particle be dispersed in cobalt matrix solidifying with post-heating.In order to be formed, there is the cutting element of ultra hard material layer as PCD or PCBN; diamond particles or crystal grain or CBN crystal grain this cemented tungsten carbide body contiguous in refractory metal shell is as niobium shell is placed and high-pressure and high temperature; the intercrystalline occurred between diamond crystals or CBN crystal grain is engaged, forms polycrystalline ultrahard diamond or polycrystalline CBN layer.
In some cases, this base material can solidify completely before being connected to ultra hard material layer, and in other cases, this base material can be green compact, does not that is solidify completely.In the case of the latter, this base material can solidify completely in HTHP sintering process.This base material can be powder type, and can solidify in the sintering process for sintering this ultra hard material layer.
Cause improving constantly the demand of the material for rock cutting in the motivating force improved constantly of earth drilling field to the productivity improved.Specifically, the resistance to abrasion of raising and the PCD material of shock-resistance is needed to have to realize rate of cutting and longer life tools faster.
The cutting element or the instrument insert that comprise PCD material are widely used in oil and natural gas probing industry for piercing the drill bit in ground.Rock drilling and other manipulation require high wear resistant and shock-resistance.One of successful factor of restriction polycrystalline diamond (PCD) abrasive material cutter is Heat of Formation due to friction between PCD and work material.This thermal conductance causes the thermal destruction of diamond layer.By the cracking of PCD layer that improves with to peel off and diamond is oppositely converted into graphite, cause the abrasive material loss of raising, this thermal destruction improves the rate of wear of this cutter.
Method for improving the wear resistance of PCD matrix material causes the reduction of the shock-resistance of this matrix material usually.
The PCD of the most wear-resisting grade locks into the calamity fracture of cutter before its wearing and tearing totally usually.In the process using these cutters, crack growth, until they reach critical length when can there is catastrophic failure, namely when most of PCD comes off in a brittle manner.Using crackle that meet with these length in normal sintering PCD process, that grow fast, cause of short duration life tools.
In addition, do not consider their high strength, polycrystalline diamond (PCD) material easily suffers impact fracture usually because of its low fracture toughness property.Improving fracture toughness property when affecting high strength and the wear resistance of this material is a challenging task.
Therefore need to have the PCD matrix material of resistance to abrasion that is good or that improve, resistance to fracture and shock-resistance and form the method for this type of matrix material.
Summary of the invention
From first aspect, provide a kind of ultrahard polycrystalline structure, comprise:
The body of polycrystalline superhard material, the body of this polycrystalline superhard material comprises:
Superhard phase, and be dispersed in this superhard mutually in non-superhard phase, this is superhard comprises multiple superhard crystal grain be bonded with each other mutually;
Wherein this non-ly superhardly comprises not superhard crystal grain chemical reaction form the particle being less than about 10 volume % or the crystal grain of the body of this polycrystalline superhard material with this mutually.
From second aspect, provide a kind of method forming ultrahard polycrystalline structure, comprise:
Particle or the crystal grain of multiple superhard material are provided;
Providing package is containing not particle of the material of superhard crystal grain chemical reaction or the multiple non-superhard crystal grain of crystal grain or particle with this, and it has the grain-size of the grain-size about 30% being less than this superhard material;
By multiple superhard material and multiple non-superhard grain mergin to form presintering assembly; With
Under the existence of the catalyst/solvent material for this superhard crystal grain, under the hyperpressure of about more than 5.5GPa with process this presintering assembly at this superhard material is than the more thermodynamically stable temperature of graphite with together with superhard material is grained sintered, to form polycrystalline superhard construction body, this superhard crystal grain shows intergranular and engages, and limit multiple gap area betwixt, this non-superhard to be dispersed in mutually in this polycrystalline material and form polycrystalline superhard material body be less than about 10 volume %, the plurality of gap area filled at least partly by any remainder catalyst/solvent.
On the other hand, provide a kind of instrument comprising ultrahard polycrystalline structure defined above, this instrument is used for cutting, milling, grinding, boring, brill ground, bores rock or other grinding application.
This instrument can comprise such as boring the drill bit of ground or brill rock, drilling rotation fixed cutter drill bits or roller cone drill bits, drilling tool, bloat tool, winged hollow reamer or other earth-boring tools of industry for oil and natural gas.
On the other hand, provide a kind of comprise ultrahard polycrystalline structure defined above drill bit or cutter or for this parts.
Summary of drawings
To describe the present invention with reference to the accompanying drawings by embodiment now, wherein:
Fig. 1 is the skeleton view of an example of PCD cutter elements for piercing the drill bit in ground;
Fig. 2 a is the schematic sectional view of the EXAMPLEPART of the PCD microstructure within this material with the non-reacted phase of the second dispersion;
Fig. 2 b is the enlarged view of a part of schematic cross-section of the exemplary PCD microstructure of Fig. 2 a;
Fig. 3 is the graphic representation of the wearability test result of display compared with the wear resistance of the embodiment of use conventional PCD materials;
Fig. 4 is the graphic representation of result of display vertical drilling test, the conventional PCD materials compare and conventionally do not leach PCD material, adopting acid treatment to leach and the embodiment of PCD material prepared according to described method; And
Fig. 5 is the graphic representation of the result of display vertical drilling test, compares conventional another embodiment not leaching PCD material and PCD material.
Identical Reference numeral refers to identical general feature in all of the figs.
Detailed Description Of The Invention
" superhard material " used herein is the material of the Vickers' hardness had at least about 28GPa.Diamond and cubic boron nitride (cBN) material are the examples of superhard material.
" superhard construction body " used herein refers to the structure of the body comprising polycrystalline superhard material.In this type of structure, base material can be connected to it, or the body of this polycrystalline material can be unsupported (free-standing) and without backing.
Polycrystalline diamond used herein (PCD) is polycrystalline superhard (PCS) material of a type, it comprises multiple diamond crystals, its major part directly engage each other, and wherein diamond content be this material at least about 80 volume %.In an embodiment of PCD material, the gap between diamond crystals can be filled with the adhesive material comprised for adamantine catalyzer at least partly." gap " used herein or " gap area " are the regions between the diamond crystals of PCD material.In the embodiment of PCD material, gap or gap area can substantially or the material be partially filled outside diamond, or they can be basic empty.PCD material can comprise the region that at least one has removed catalystic material from gap, leaving gap space between this diamond crystals.
" catalystic material " for superhard material can promote growth or the sintering of this superhard material.
Term used herein " base material " refers to any base material forming this ultra hard material layer above it.Such as, " base material " used herein can be the transition layer formed above another base material.
Term used herein " global formation " region or part adjacent to one another produce and not by different types of material separates.
In the embodiment shown in such as Fig. 1, the ultra hard material layer 12 that cutting element 1 comprises base material 10 and formed on this base material 10.This base material 10 can by mechanically resistant material as cemented tungsten carbide be formed.This superhard material 12 can be that such as polycrystalline diamond (PCD) or thermally-stabilised product are as thermally stable P CD (TSP).This cutting element 1 can be installed to frame of the bit as (not shown) in drag bit body, and such as can be suitable for use as the tool insert of the drill bit pierced in ground.
The exposed upper surface of this superhard material relative with this base material forms face of tool 14, and this face of tool is the surface of in use carrying out with its edge 16 cutting.
Be the interface surface 18 forming interface with ultra hard material layer 12 in one end of this base material 10, this ultra hard material layer 12 is connected to it at this interface surface place.As shown in the embodiment of figure 1, base material 10 entirety is columniform, and has circumferential surface 20 and peripheral top edge 22.
As used herein, PCD grade be gap area between the volume content of diamond crystals and size, diamond crystals volume content and can be present in the material in gap area composition in the PCD material that characterizes.The PCD material of certain grade can be manufactured by the following method, the method comprises the aggregation providing the diamond crystals with the distribution of sizes being suitable for this grade, optionally in this aggregation, introduce catalystic material or additive material, and under the existence for adamantine catalystic material source, a pressure and temperature imposing to this aggregation, diamond is than graphite more Thermodynamically stable and this catalystic material melting at pressure and temperature.Under these conditions, the catalystic material of melting may be penetrated in this aggregation by this source, and in sintering process, likely promote that the direct alternate between diamond crystals is to form PCD structure.The diamond crystals that this aggregation can comprise loose diamond crystals or be kept together by adhesive material, and described diamond crystals can be diamond crystals that is natural or synthesis.
Different PCD grades can have different microstructures and different mechanical propertiess, as elasticity (or Young) modulus E, modulus of elasticity, cross-breaking strength (TRS), toughness (as so-called K1C toughness), hardness, density and thermal expansivity (CTE).Different PCD grades also in use may show difference.Such as, the rate of wear of different PCD grade may be different with resistance to fracture.
All PCD grades can comprise the gap area being filled with the material comprising cobalt metal, and described cobalt metal is an example for adamantine catalystic material.
This PCD structure 12 can comprise one or more PCD grade.
Fig. 2 a and 2b is through the cross section being formed and schematically show the embodiment of the PCD material of the superabrasive layer 12 of Fig. 1 of PCD microstructure.Comprise the non-reacted of the particle 30 be such as made up of ceramic oxide to be dispersed in mutually in this diamond phase matrix 32 to serve as stress raisers source and/or microdefect.This diamond phase matrix 32 here refers to by diamond crystals and the catalyst binder be scattered in the wherein 33 conventional PCD formed mutually.This non-reacted phase 30 can comprise oxide compound, such as, be made up of one or more oxide compounds of aluminum oxide, zirconium white, tantalum oxide and yttrium oxide.The grain-size of the non-reacted phase particle 30 of dispersion can be not more than 30% of this diamond grain size in some embodiments.This non-reacted particle 30 can mix with diamond powder, and sinters this matrix material in a conventional manner subsequently, such as, adopts cobalt to infiltrate to provide this catalyst binder under HPHT thus forms the intergranular joint between diamond crystals.This non-reacted particle is relative to this superhard phase, such as adamantine non-reacted, and also may not react mutually with this tackiness agent, make them be insoluble to this tackiness agent phase and this superhard (such as diamond) particle can not be adhered to, that is, the superhard particles in a large amount of clearance spaces (clearance space described in some may be filled with residual adhesive phase at least partly) as shown in figure 2b between the diamond crystals be combined with each other and between the diamond crystals be combined with each other between non-reacted particle hardly Presence of an interface be combined.
In some embodiments, this non-reacting phase particle 30 comprises the sintering PCD material being less than 5 volume %.In other embodiments, non-reacting phase particle 30 comprises the sintering PCD material being less than 3 volume %, or comprises the sintering PCD material being less than 1 volume % even in some cases.
The non-reacted phase particle 30 of these dispersions can in binder pool or between diamond crystals according to size.
This superhard material crystal grain can be such as diamond crystals or particle.In original mixture before sintering, they can be such as bimodal, and that is, this charging comprises the coarse fraction of diamond crystals and the fine-graded mixture of diamond crystals.In some embodiments, this coarse fraction can have the average grain/grain-size of such as about 10 to 60 microns." average grain or grain-size " refers to individual particles/crystal grain and has a size range, and average grain/grain-size presents " mean value ".Fine-graded average grain/grain-size is less than coarsely graded size, such as, be about 1/10 to 6/10 of coarse fraction size, and can be such as about 0.1 to 20 micron in some embodiments.
In some embodiments, brait grade is the brait of about 50% to about 97% to the weight ratio of fine diamond grade, and the weight ratio of fine diamond grade can be about 3% to about 50%.In other embodiment, coarse fraction will be about 70:30 to about 90:10 to fine-graded weight ratio.
In further embodiment, coarse fraction to fine-graded part by weight as can be about 60:40 to about 80:20.
In some embodiments, this thick and fine-graded particle size distribution can not be overlapping, and the different size component of this composite sheet is distinguished mutually with the order of magnitude between the single size fraction forming multimodal distribution in some embodiments.
Some embodiments are distributed by the wide bimodal size between the thick of superhard material and fine fraction and form, but some embodiments can comprise three peaks or even four peaks or even more size patterns, it can such as be distinguished with the order of magnitude dimensionally mutually, such as, its average particle size particle size be 20 microns, 2 microns, the particle size mix of 200 nanometers and 20 nanometers.
Be divided into fine fraction, coarse fraction or other size between can be undertaken by currently known methods by size diamond particles/crystal grain, diamond crystals as larger in jet grinding etc.
This superhard material is in the embodiment of polycrystalline diamond abrasive compact wherein, and the diamond crystals for the formation of this polycrystalline diamond abrasive compact can be natural or synthesis.
In some embodiments, this binder catalyst/solvent can comprise cobalt or some other iron family element ting as iron or nickel, or its alloy.In periodictable, the carbide of the metal of group IV-VI, nitride, boride and oxide compound are other examples of the non-diamond materials can added in this sintering mix.In some embodiments, this binder/catalyst/sintering aid can be Co.
Cemented metal carbide base material can be conventional on composition, and can comprise any IVB, VB or group vib metal thus, and it is compacting and sintering under the existence of the tackiness agent of cobalt, nickel or iron or its alloy.In some embodiments, these metallic carbide are wolfram varbides.
The cutter with Fig. 1 of the microstructure of Fig. 2 a and 2b can such as to manufacture as follows.
" green compact " used herein be comprise crystal grain to be sintered and means that this crystal grain is kept together as tackiness agent, the such as body of organic binder bond and additional non-reacted phase 30.
The embodiment of superhard construction body can by preparing the method manufacture of green compact, and these green compact comprise crystal grain or particle, non-reacted phase and the tackiness agent of superhard material, as organic binder bond.These green compact can also comprise for promoting this superhard grained sintered catalystic material.Can be shaped to the body with the general shape substantially identical with the body being intended to sinter with this binder/catalyst and by them by this crystal grain of merging or particle, and dry adhesive manufactures this green compact.This adhesive material can be removed by such as burning at least partially.These green compact can by comprise compacting process, injection moulding process or other method as molding, extrude, deposit modeling method come shaping.
Green compact for this superhard construction body can be placed into base material, as in preformed cemented carbide substrate to form presintering assembly, it can be encapsulated in the involucrum (capsule) for hyperpressure stove as known in the art like that.This base material can be provided for the source promoting superhard grained sintered catalystic material.In some embodiments, this superhard crystal grain can be diamond crystals.This base material can be cobalt-knot wolfram varbide, and the cobalt in this base material is the source of the catalyzer for sintering this diamond crystals.This presintering assembly can comprise the source of additional catalystic material.
In a variant, the method can comprise and to be loaded into by the involucrum comprising presintering assembly in press and to impose hyperpressure and temperature to these green compact, and this superhard material is thermodynamically stable at pressure and temperature, to sinter this superhard crystal grain.In some embodiments, these green compact can comprise diamond crystals, and are at least about 5GPa to this assembly applied pressure, and this temperature is at least about 1,300 degrees Celsius.
A variant of the method can comprise by such as method manufacture diamond composite structure disclosed in PCT application publication number WO2009/128034, and the method has the additional step mixed with the crystal grain/particle of non-reacted phase by diamond crystals before sintering.Comprise diamond particles, non-reacted phase particle and metal binder material such as the powder blend of cobalt can by merging these particles and preparing together with they being admixed.Effective powder preparation technology can be used for admixing this powder, as wet method or the multidirectional mixing of dry method, planetary type ball-milling and the high shear mixing with homogenizer.In one embodiment, the mean sizes of this diamond particles can be at least about 50 microns, and this powder can be stirred in by this powder of mixing or in some cases with hand and to come together to merge with other particle by they.In a variant of the method, be suitable for the follow-up precursor material being converted into adhesive material and can be included in this powder blend, in a variant of the method, metal binder material can be introduced to be suitable for the form penetrated in green compact.This powder blend can be deposited in mould or mould and compacting to form green compact, such as pass through single shaft compacting or other debulking methods, as isostatic cool pressing (CIP).Sintering process known in the art can be imposed to form sintered article to these green compact.In a variant, the method can comprise and to be loaded into by the involucrum comprising presintering assembly in press and to impose hyperpressure and temperature to these green compact, and this superhard material is thermodynamically stable at pressure and temperature, to sinter this superhard crystal grain.
After sintering, this polycrystalline superhard construction body can be ground to certain size, and if can be included in 45 ° of chamferings of about 0.4 height on polycrystalline superhard material body obtained thus if required.
Under diamond is heat-staple pressure and temperature, subsequent processes can be imposed part or all of non-diamond carbon is transformed back diamond and manufactures diamond composite structure to this sintered article.Can use known hyperpressure stove in diamond synthesizing field, and for this second sintering process, this pressure can be at least about 5.5GPa, this temperature can be at least about 1,250 degrees Celsius.
Another embodiment of superhard construction body can obtain by the following method, the method comprises provides PCD structure and the front body structure for diamond composite structure, by the complementary shape that each shaping structures is respective, this PCD structure and diamond composite structure are assembled in cemented carbide substrate to form unassembled assembly, and imposing at least about the pressure of 5.5GPa with at least about 1 to unassembled assembly, the temperature of 250 degrees Celsius is to form PCD structure.This front body structure can comprise carbide particle and diamond or non-diamond carbon material (as graphite), non-reacted phase particle and comprise the adhesive material of metal as cobalt.This front body structure can be comprise the particle of diamond or non-diamond carbon and the powder blend of carbide material particle and this powder blend of compacting by compacting to carry out shaping green compact.
In some embodiments, the body of such as diamond and carbide material is added non-reacted phase and sintering aid/binder/catalyst apply in powder form and sinter in single UHP/HT process simultaneously.The mixture of diamond crystals, non-reacted phase particle and carbide body to be placed in HP/HT reaction cabin assembly and to impose HP/HT process.Selected HP/HT treatment condition are enough to the intergranular realized between the neighboring die of abrasive grain and combine and optional join sintered particles to cemented metal carbide carrier.In one embodiment, these treatment condition generally include apply at least about 1200 degrees Celsius temperature and be greater than the hyperpressure about 3 to 120 minutes of about 5GPa.
In another embodiment, this base material can sintering this superhard polycrystalline material process in be bonded together in HP/HT press before presintering in a separate process.
In further embodiment, by the body premolding of this base material and polycrystalline superhard material.Such as, this mixture with non-reacted phase particle, and to be filled in the tank of suitable shape and in press, to impose high pressure and temperature subsequently together with the optional carbonate tackiness agent-catalyst mix being similarly powder type by the bimodal charging of super hard crystal grain/particle.Usually, this pressure is at least 5GPa, and this temperature is at least about 1200 degrees Celsius.Subsequently the premolding body of this polycrystalline superhard material is placed on the appropriate position on the upper surface of premolding substrate carbides (being mixed into binder catalyst), and this assembly is arranged in the tank of suitable shape.In press, impose high moderate pressure to this assembly subsequently, the rank of temperature and pressure is still respectively at least about 1200 degrees Celsius and 5GPa.In this technological process, this solvent/catalyst to be migrated in the body of superhard material by this base material and serves as tackiness agent-catalyzer to realize alternate in this layer and also for joining polycrystalline superhard material layer to this base material.This sintering process also for by the body engagement of superhard polycrystalline material to base material.
Cemented carbide substrate is not integrated in the embodiment on base material containing enough for adamantine solvent/catalyst and wherein this PCD structures in sintering process under hyperpressure wherein, and solvent/catalyst material can be included in the aggregation of diamond crystals or by the material source outside cemented carbide substrate and be incorporated in the aggregation of diamond crystals.This solvent/catalyst material can comprise cobalt, and it is penetrated in the aggregation of diamond crystals by this base material before the sintering step and in sintering step process under hyperpressure.But, in base material, the content of cobalt or other solvent/catalyst material is in low embodiment wherein, particularly when its lower than this cemented carbide material about 11 % by weight time, so may need to provide alternate source to guarantee that the good sintering of this aggregation is to form PCD.
Can be incorporated in the aggregation of diamond crystals by various method for adamantine solvent/catalyst, comprise by the solvent/catalyst material of powder type and this diamond crystals blended, solvent/catalyst material is deposited to this diamond crystals on the surface, or solvent/catalyst material is penetrated in this aggregation by the material source outside base material by the part before the sintering step or as sintering step.The method deposited on diamond crystals surface for adamantine solvent/catalyst (as cobalt) is well known in the art, and comprise chemical vapour deposition (CVD), physical vapor deposition (PVD), sputtering coating, electrochemical process, without electric cladding process and ald (ALD).It being understood that respective the strengths and weaknesses depends on the character of sintering aid material and coating structure body to be deposited, and the characteristic of this crystal grain.
Similarly, non-reacted phase particle can be introduced by various means, and such as, this diamond crystals or particle can scribble non-reactive material before sintering.
In one embodiment, this precursor material can be converted into the deposition of material of containing element cobalt metal on the surface of this diamond crystals by first depositing precursor materials by this binder/catalyst such as cobalt subsequently.Such as, in a first step, following reaction can be adopted at diamond crystals deposited on silicon cobaltous carbonate:
Co(NO3)2+Na2CO3→CoCO3+2NaNO3
The deposition of cobalt or other carbonate for adamantine solvent/catalyst or other precursor can be realized by the method described in PCT patent publication No. WO2006/032982.Cobaltous carbonate can be converted into cobalt and water subsequently, such as, and the pyrolytic reaction by following:
CoCO3→CoO+CO2
CoO+H2→Co+H2O
In another embodiment, the precursor of cobalt dust or cobalt, such as cobaltous carbonate, can be blended with this diamond crystals.When the precursor using solvent/catalyst as cobalt, be necessary that this material of thermal treatment is with realization response, to manufacture this solvent/catalyst material of element form before this aggregation of sintering.
In some embodiments, this cemented carbide substrate can be made up of the tungsten carbide particle be bonded together by adhesive material, and this adhesive material comprises the alloy of Co, Ni and Cr.This tungsten carbide particle can form at least 70 % by weight and at the most 95 % by weight of this base material.This adhesive material can comprise the Ni of about 10 to 50 % by weight, the Cr of about 0.1 to 10 % by weight, and remaining weight percent comprises Co.
Describe in further detail embodiment hereinafter with reference to following examples, provide this embodiment to be only in this article and illustrate and be not intended to restriction.
Embodiment 1
It is in the bimodal diamond powder of 4 microns that the zirconium white being 1 micron by 0.5 gram of average grain size adds 50 grams of average grain sizes to.This aggregation uses Co-WC mill ball ball milling in 60 ml methanol.Mill ball: the ratio of powder is 5:1, and this ball milling carries out 1 hour under 90rpm.2.1 grams of these mixtures are placed on preformed WC-Co base material top and sinter at 6.8GPa and 1450 DEG C under high pressure-temperature HPHT condition.This PCD cutter is reclaimed, processes and analyze.Hereinafter result is discussed with reference to Fig. 3 to 5.
Embodiment 2:
It is in the bimodal diamond powder of 4 microns that the zirconium white being 1 micron by 1.5 grams of average grain sizes adds 50 grams of average grain sizes to.This aggregation uses Co-WC mill ball ball milling in 60 ml methanol.Mill ball: the ratio of powder is 5:1, and this ball milling carries out 1 hour under 90rpm.2.1 grams of these mixtures are placed on preformed WC-Co base material top and sinter at 6.8GPa and 1450 DEG C under high pressure-temperature HPHT condition.This PCD cutter is reclaimed, processes and analyze.
Hereinafter result is discussed with reference to Fig. 3 to 5.
Embodiment 3:
It is in the unimodal diamond powder of 3 microns that the zirconium white being 1 micron by 0.25 gram of average grain size adds 50 grams of average grain sizes to.This aggregation uses Co-WC mill ball ball milling in 60 ml methanol.Mill ball: the ratio of powder is 5:1, and this ball milling carries out 1 hour under 90rpm.2.1 grams of these mixtures are placed on preformed WC-Co base material top and sinter at 6.8GPa and 1450 DEG C under high pressure-temperature HPHT condition.This PCD cutter is reclaimed, processes and analyze.
Hereinafter result is discussed with reference to Fig. 3 to 5.
Embodiment 4:
It is in the unimodal diamond powder of 3 microns that the zirconium white being 1 micron by 0.5 gram of average grain size adds 50 grams of average grain sizes to.This aggregation uses Co-WC mill ball ball milling in 60 ml methanol.Mill ball: the ratio of powder is 5:1, and this ball milling carries out 1 hour under 90rpm.2.1 grams of these mixtures are placed on preformed WC-Co base material top and sinter at 6.8GPa and 1450 DEG C under high pressure-temperature HPHT condition.This PCD cutter is reclaimed, processes and analyze.
Hereinafter result is discussed with reference to Fig. 3 to 5.
Embodiment 5:
It is in the unimodal diamond powder of 3 microns that the zirconium white being 1 micron by 1.5 grams of average grain sizes adds 50 grams of average grain sizes to.This aggregation uses Co-WC mill ball ball milling in 60 ml methanol.Mill ball: the ratio of powder is 5:1, and this ball milling carries out 1 hour under 90rpm.2.1 grams of these mixtures are placed on preformed WC-Co base material top and sinter at 6.8GPa and 1450 DEG C under high pressure-temperature HPHT condition.This PCD cutter is reclaimed, processes and analyze.
Hereinafter result is discussed with reference to Fig. 3 to 5.
Preparation PCD material various sample and by imposing multiple test to analyze to this sample.The result of these tests is presented in Fig. 3 to 5.
By imposing to finished product PCD sample the wearability that conventional grouan Cutting experiment analyzes various PCD sample for 3 minutes.Polishing scratch progress in the monitoring equipment course of processing.The display of this result in figure 3.The comparative sample (Ref1) of not adding any zirconic conventional PCD in the polishing scratch containing the zirconic PCD composite sheet formed according to embodiment 1 of 0.5 volume % in finished product PCD and PCD matrix is compared.In addition, sample is prepared according to comprising 1 volume % zirconium white and comprise the zirconic embodiment of 3 volume % in PCD in PCD.
The result shown as can be seen from Fig. 3, adds the wear resistance that small amounts zirconium improves PCD, because polishing scratch length is lower than conventional PCD.
The commercially available polycrystalline diamond cutters element of PCD composite sheet and dipped (RefZ) and not dipped (RefNZ) formed according to embodiment 1 is compared in vertical boring mill test.In this experiment, pierce the function of the passage of workpiece as cutter elements, measure wearflat area.The result diagram obtained in the diagram.This result provides the instruction to total polishing scratch area that length of cut is drawn.Will find out, with impose same test for the leaching of comparing with do not leach comparing of occurring in Conventional PCD compacts, the PCD composite sheet formed according to embodiment 1 can realize larger length of cut and less polishing scratch area.In this test, this Conventional PCD compacts comprises Ref2, and it is the bimodal compound of the average diamond grain size with about 4 microns.In fact, Fig. 4 shows and does not add compared with zirconic conventional PCD, achieves the improvement of 96% of length of cut in this PCD embodiment.
Also the routine of not soaking (NZ) sample and being formed by the unimodal input diamonds of the average diamond grain size with about 3 microns comprising the PCD embodiment of the zirconic embodiment of 0.5 volume % 3 is not leached PCD sample to compare.Result display in Figure 5.This test shows, and does not add compared with zirconic conventional PCD, and the life-span of this cutter improves 104%.
Although do not wish to be fettered by particular theory, it is believed that according to embodiments more described herein, the fracture property of PCD can be improved by introducing microdefect and/or strain concentrating source in PCD matrix.This microdefect and/or strain concentrating source it is believed that and in use facilitate crack branching in PCD material or multiple crack front, cause distributing again of in each crack tip available strain energy or energy release rate (G).The material that can generate many Cracks under loads will show to obtain more flexible than the material only with a main crackle, because multiple crack front guarantees that the net energy being supplied to material distributes between many Cracks, crack growth is caused to pass the speed of this material much slow.The PCD material net result in the application comprising this type of microdefect is, in use, the crack number that polishing scratch starts can increase compared with conventional PCD, thereby reduces the strain energy that can be used for each single crack, therefore slow down growth velocity, and generate shorter crackle.Ideally, when rate of wear can compared with crack growth rate time, in this case, will crackle be can't see after polishing scratch, thus form smooth polishing scratch outward appearance, not there is the chip deviate from or crystal grain from sintering PCD.
By the cobalt contents that gained is lower in material of the present invention compared with conventional PCD, add the non-reacted effect also can mutually with raising PCD thermostability of pottery.
The size of these microdefects, shape and distribution can customize the final application of this PCD material.It is believed that and can improve resistance to fracture when sacrificing the overall wear resistance of this material significantly, this is desirable for PCD cutting tool.
It is believed that embodiment can be provided in the means of malleableize PCD material when not sacrificing its high-wearing feature thus.This can realize by microdefect being designed in PCD matrix.This conception of species is by generating multiple crack front or defect works, and described crack front or defect contribute to distribution again or the dissipation of available energy-to-break.These defects also can promote crack branching, and this is another kind of energy dissipation mechanism.Net result is, do not have enough energy to can be used for the independent crackle of each bar with can fast propagation, therefore this significantly slow down the speed of crack growth.
The vertical boring mill test-results of these project organizations shows significant raising compared with conventional PCD in the PCD cutting tool life-span, and does not reduce wear resistance.
The observation developed polishing scratch in test process shows this material and can generate large polishing scratch and not show fragility micro-fracture (such as spallation or cracked), result in longer life tools.In test process, notice the improvement of 100% in cutter life tools, that is, there is the twice in the life-span of the untreated PCD of routine of identical average diamond grain size.
Thus, can form the embodiment of PCD material, it has the combination of high abrasion and fracture property.
The PCD element 10 described with reference to Fig. 1 can be processed after sintering further.Such as, catalystic material can be removed from the region of the PCD structure of adjacent working-surface and/or side surface.This can pass through by this PCD structure of acid treatment to leach catalystic material between diamond crystals, or by other method as electrochemical process realizes.Can provide thermally-stabilised region thus, it can be porous substantially, extends at least about 50 microns or at least about the degree of depth of 100 microns, this thermally-stabilised region can improve the thermostability of this PCD element further by PCD body structure surface.
In addition, can by such as grinding to provide basic cylindricality and the working-surface with substantially flat, or roughly semisphere, point, the PCD element of conical or conical butt working-surface, produce or complete the PCD body in the structure of the Fig. 1 comprising the PCD structure joining sintered carbide carrier body to.This PCD element go for such as piercing rotational shear (or cutting type) drill bit in ground, be applicable to percussion drill bit or be applicable to the pick dug up mine or pitch cracks.
Although describe various embodiment with reference to a large amount of embodiment, it will be understood by those skilled in the art that and can carry out various change, and its key element can be substituted with equivalent, and these embodiments are not intended to limit disclosed particular.Such as, the microdefect of non-reacted phase particle form can be incorporated in this PCD in every way, and in some embodiments, they can be introduced by the following method, change HPHT sintering condition to make to introduce this microdefect by partially sintering of PCD along diamond crystal boundary.The non-reacted phase particle of these dispersions in binder pool inside or can localize between diamond crystals, depends on size.
Claims (39)
1. ultrahard polycrystalline structure, comprises:
The body of polycrystalline superhard material, the body of this polycrystalline superhard material comprises:
Superhard phase, and be dispersed in this superhard mutually in non-superhard phase, describedly superhardly comprise multiple superhard crystal grain be bonded with each other mutually;
Wherein saidly non-ly superhardly comprise mutually not with described superhard crystal grain chemical reaction and form the particle being less than about 10 volume % or the crystal grain of the body of described polycrystalline superhard material.
2. ultrahard polycrystalline structure as claimed in claim 1, wherein said superhard crystal grain comprises natural and/or diamond synthesis crystal grain, and described ultrahard polycrystalline structure forms polycrystalline diamond structure body.
3. the ultrahard polycrystalline structure as described in aforementioned any one of claim, wherein saidly non-ly superhardly comprises tackiness agent phase mutually further.
4. ultrahard polycrystalline structure as claimed in claim 3, wherein said tackiness agent comprises cobalt and/or one or more other iron family element tings mutually, as iron or nickel, or its alloy, and/or one or more carbide of the metal of group IV-VI, nitride, boride and oxide compound in periodictable.
5. the ultrahard polycrystalline structure as described in claim 3 or 4; not not wherein such with the described particle of described superhard crystal grain chemical reaction or crystal grain: they are not dissolved in described adhesive phase material, and keep thus not sintering and form defect in described polycrystalline material in the body of described polycrystalline material.
6. the ultrahard polycrystalline structure as described in aforementioned any one of claim; wherein do not comprise any one or multiple of oxide material, the oxide compound of such as aluminum oxide, zirconium white, yttrium oxide, silicon oxide or tantalum oxide or its any combination with the particle of described superhard crystal grain chemical reaction or crystal grain.
7. the ultrahard polycrystalline structure as described in aforementioned any one of claim, comprises the cemented carbide substrate along interface to described polycrystalline material body further.
8. ultrahard polycrystalline structure as claimed in claim 7, wherein said cemented carbide substrate comprises the tungsten carbide particle be bonded together by adhesive material, and described adhesive material comprises the alloy of Co, Ni and Cr.
9. the ultrahard polycrystalline structure as described in any one of claim 7 or 8, wherein said cemented carbide substrate comprises the adhesive material of about 8 to 13 weight or meausurement %.
10. the ultrahard polycrystalline structure as described in aforementioned any one of claim, does not wherein have the grain-size of about 30% or less of the grain-size of described superhard crystal grain with the described particle of described superhard crystal grain chemical reaction or crystal grain.
11. ultrahard polycrystalline structures as described in aforementioned any one of claim, wherein do not form about 0.5 to about 5 volume % of the body of described polycrystalline superhard material with the described particle of described superhard crystal grain chemical reaction or crystal grain.
12. ultrahard polycrystalline structures as described in any one of claim 1 to 10, wherein do not form about 0.5 to about 2 volume % of the body of described polycrystalline superhard material with the described particle of described superhard crystal grain chemical reaction or crystal grain.
13. ultrahard polycrystalline structures as described in aforementioned any one of claim, the body of wherein said superhard material at least partially substantially not containing for adamantine catalystic material, described part forms thermally-stabilised region.
14. ultrahard polycrystalline structures as claimed in claim 13, wherein said thermally-stabilised region comprise maximum 2 % by weight for adamantine catalystic material.
15. for piercing the rotational shear drill bit in ground or the ultrahard polycrystalline structure for percussion drill bit, comprises the ultrahard polycrystalline structure as described in aforementioned any one of claim joining sintered carbide carrier body to.
The method of 16. formation ultrahard polycrystalline structures, comprising:
Particle or the crystal grain of multiple superhard material are provided;
Providing package containing not with the particle of the material of superhard crystal grain chemical reaction or the multiple non-superhard crystal grain of crystal grain or particle, it has the grain-size of about 30% of the grain-size being less than this superhard material;
Multiple superhard material is mixed to form presintering assembly with multiple non-superhard crystal grain; With
Under the existence of the catalyst/solvent material for this superhard crystal grain, under the hyperpressure of about more than 5.5GPa with process this presintering assembly at this superhard material is than the more thermodynamically stable temperature of graphite with together with superhard material is grained sintered, thus form polycrystalline superhard construction body, this superhard crystal grain shows intergranular and engages, and limit multiple gap area betwixt, this non-superhard to be dispersed in mutually in this polycrystalline material and form be less than polycrystalline superhard material body be less than about 10 volume %, the plurality of gap area filled at least partly by any remainder catalyst/solvent.
17. methods as claimed in claim 16, wherein saidly provide the step of multiple superhard material crystal grain to comprise to provide multiple diamond crystals.
18. methods as claimed in claim 17, the wherein said multiple crystal grain providing the step of multiple diamond crystals to comprise to provide first grade with the first mean sizes and second grade with the second mean sizes, described first grade has the average grain size of about 10 to 60 microns, and described second section has the average grain size being less than described coarsely graded described size.
The method of 19. claims 18, wherein said second grade has the average grain size of about 1/10 to 6/10 of the size of described first grade.
The method of 20. any one of claim 16 to 19, the average grain size of wherein said first grade is about 10 to 60 microns, and the average grain size of described second grade is about 0.1 to 20 micron.
21. methods as described in any one of claim 18 to 20, the weight ratio of wherein said first grade to described second grade is about 50% to about 97%, and the weight ratio of described second component is about 3% to about 50 % by weight.
The method of 22. claims 18, the ratio by weight percentage of wherein said first grade to described second grade is about 60:40.
The method of 23. claims 18, the ratio by weight percentage of wherein said first grade to described second grade is about 70:30.
The method of 24. claims 18, the ratio by weight percentage of wherein said first grade to described second grade is about 90:10.
The method of 25. claims 18, the ratio by weight percentage of wherein said first grade to described second grade is about 80:20.
The method of 26. any one of claim 18 to 25, wherein providing the step of multiple superhard material crystal grain to comprise provides the grain size distribution of wherein said first and second grades nonoverlapping multiple crystal grain.
The method of 27. any one of claim 18 to 26, wherein saidly provides the step of multiple superhard material crystal grain to comprise to provide three kinds or more kind grain-size pattern to form the multiple crystal grain comprising the multimodality of the grain-size blend with relevant average grain size.
The method of 28. claims 18, the average grain size of wherein said grade differs an order of magnitude.
The method of 29. any one of claim 16 to 28, wherein said providing package is containing not comprising any one of providing package oxycompound, carbide, zirconium white, aluminum oxide, yttrium oxide and tantalum oxide or multiple multiple materials with the step of the particle of the material of described superhard crystal grain chemical reaction or the multiple non-superhard crystal grain of crystal grain or particle.
The method of 30. any one of claim 16 to 29, the step of the multiple particle of wherein said merging or crystal grain comprises the described particle of mixing or crystal grain.
The method of 31. any one of claim 16 to 29, the step of the multiple particle of wherein said merging or crystal grain comprises with not applying described superhard crystal grain or particle with the particle of the particle of superhard material or the non-superhard material of crystal grain chemical reaction or crystal grain.
The method of 32. any one of claim 16 to 31, wherein providing not comprise with the step of multiple materials of described superhard crystal grain chemical reaction provides crystal grain or particle to form about 0.5 to 5 volume % of the body of polycrystalline superhard material.
33. instruments comprising the ultrahard polycrystalline structure as described in any one of claim 1 to 15, described instrument is used for cuttings, milling, grinding, boring, brill ground, bore rock or other grinding is applied.
34. instruments as claimed in claim 33, wherein said tool kit is containing the drill bit for boring ground or brill rock.
35. instruments as claimed in claim 33, wherein said tool kit is containing the rotation fixed cutter drill bits for oil and natural gas probing industry.
36. instruments as claimed in claim 33, wherein said instrument is roller cone drill bits, drilling tool, bloat tool, winged hollow reamer or other earth-boring tools.
37. comprise the drill bit of the ultrahard polycrystalline structure as described in any one of claim 1 to 15 or cutter or the parts for this.
38. with reference to the arbitrary embodiment of embodiment as shown in the accompanying drawings, basic foregoing ultrahard polycrystalline structure.
39. references, as arbitrary embodiment of the embodiment shown in the accompanying drawings, manufacture the method for ultrahard polycrystalline structure substantially foregoing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369381.3A CN110157967A (en) | 2013-03-31 | 2014-03-31 | Superhard construction body and its manufacturing method |
Applications Claiming Priority (3)
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| GBGB1305871.4A GB201305871D0 (en) | 2013-03-31 | 2013-03-31 | Superhard constructions & methods of making same |
| GB1305871.4 | 2013-03-31 | ||
| PCT/EP2014/056463 WO2014161818A2 (en) | 2013-03-31 | 2014-03-31 | Superhard constructions & methods of making same |
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| CN201910369381.3A Division CN110157967A (en) | 2013-03-31 | 2014-03-31 | Superhard construction body and its manufacturing method |
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| CN105209649A true CN105209649A (en) | 2015-12-30 |
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| CN201480028602.6A Pending CN105209649A (en) | 2013-03-31 | 2014-03-31 | Superhard constructions & methods of making same |
| CN201910369381.3A Pending CN110157967A (en) | 2013-03-31 | 2014-03-31 | Superhard construction body and its manufacturing method |
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| CN201910369381.3A Pending CN110157967A (en) | 2013-03-31 | 2014-03-31 | Superhard construction body and its manufacturing method |
Country Status (6)
| Country | Link |
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| US (3) | US20160251741A1 (en) |
| EP (1) | EP2981633A2 (en) |
| JP (1) | JP6316936B2 (en) |
| CN (2) | CN105209649A (en) |
| GB (2) | GB201305871D0 (en) |
| WO (1) | WO2014161818A2 (en) |
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| CN108472731A (en) * | 2015-12-31 | 2018-08-31 | 六号元素(英国)有限公司 | Superhard construction and its manufacturing method |
| CN108585855A (en) * | 2018-01-26 | 2018-09-28 | 西南交通大学 | A kind of grain polycrystalline diamond compact and preparation method thereof of selenium catalyst |
| CN113968736A (en) * | 2021-12-01 | 2022-01-25 | 西南交通大学 | Polycrystalline diamond sintered body of tellurium catalyst and preparation method thereof |
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| GB201318640D0 (en) * | 2013-10-22 | 2013-12-04 | Element Six Abrasives Sa | Superhard constructions & methods of making same |
| GB201423410D0 (en) * | 2014-12-31 | 2015-02-11 | Element Six Abrasives Sa | Superhard constructions & method of making same |
| US11434136B2 (en) | 2015-03-30 | 2022-09-06 | Diamond Innovations, Inc. | Polycrystalline diamond bodies incorporating fractionated distribution of diamond particles of different morphologies |
| CN104962793B (en) * | 2015-06-23 | 2017-04-26 | 中南钻石有限公司 | Polycrystalline diamond compact with excellent electric conductivity and method for manufacturing polycrystalline diamond compact |
| DE102016207028A1 (en) * | 2016-04-26 | 2017-10-26 | H.C. Starck Gmbh | Carbide with toughening structure |
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| US10603719B2 (en) | 2017-08-31 | 2020-03-31 | Baker Hughes, A Ge Company, Llc | Cutting elements and methods for fabricating diamond compacts and cutting elements with functionalized nanoparticles |
| GB201918378D0 (en) | 2019-12-13 | 2020-01-29 | Element Six Uk Ltd | Polycrystalline diamond with iron-containing binder |
| CN111850335B (en) * | 2020-07-27 | 2022-04-29 | 深圳市海明润超硬材料股份有限公司 | Diamond composite sheet easy to remove cobalt and preparation method thereof |
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2014
- 2014-03-31 GB GB1405736.8A patent/GB2512500B/en active Active
- 2014-03-31 CN CN201480028602.6A patent/CN105209649A/en active Pending
- 2014-03-31 CN CN201910369381.3A patent/CN110157967A/en active Pending
- 2014-03-31 JP JP2016505786A patent/JP6316936B2/en active Active
- 2014-03-31 WO PCT/EP2014/056463 patent/WO2014161818A2/en active Application Filing
- 2014-03-31 US US14/778,409 patent/US20160251741A1/en not_active Abandoned
- 2014-03-31 EP EP14713509.9A patent/EP2981633A2/en not_active Withdrawn
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2018
- 2018-01-29 US US15/881,882 patent/US20190017153A1/en not_active Abandoned
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2022
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| CN108472731A (en) * | 2015-12-31 | 2018-08-31 | 六号元素(英国)有限公司 | Superhard construction and its manufacturing method |
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| CN108585855A (en) * | 2018-01-26 | 2018-09-28 | 西南交通大学 | A kind of grain polycrystalline diamond compact and preparation method thereof of selenium catalyst |
| CN113968736A (en) * | 2021-12-01 | 2022-01-25 | 西南交通大学 | Polycrystalline diamond sintered body of tellurium catalyst and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110157967A (en) | 2019-08-23 |
| WO2014161818A3 (en) | 2014-12-24 |
| US20190017153A1 (en) | 2019-01-17 |
| GB201305871D0 (en) | 2013-05-15 |
| GB2512500B (en) | 2015-10-07 |
| US20220411900A1 (en) | 2022-12-29 |
| JP2016520504A (en) | 2016-07-14 |
| EP2981633A2 (en) | 2016-02-10 |
| GB2512500A (en) | 2014-10-01 |
| WO2014161818A2 (en) | 2014-10-09 |
| JP6316936B2 (en) | 2018-04-25 |
| GB201405736D0 (en) | 2014-05-14 |
| US20160251741A1 (en) | 2016-09-01 |
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