WO2017073296A1 - 複合多結晶体 - Google Patents
複合多結晶体 Download PDFInfo
- Publication number
- WO2017073296A1 WO2017073296A1 PCT/JP2016/079937 JP2016079937W WO2017073296A1 WO 2017073296 A1 WO2017073296 A1 WO 2017073296A1 JP 2016079937 W JP2016079937 W JP 2016079937W WO 2017073296 A1 WO2017073296 A1 WO 2017073296A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diamond
- carbon
- polycrystalline
- composite
- less
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/25—Diamond
- C01B32/26—Preparation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
- C04B35/645—Pressure sintering
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1436—Composite particles, e.g. coated particles
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/427—Diamond
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5454—Particle size related information expressed by the size of the particles or aggregates thereof nanometer sized, i.e. below 100 nm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/608—Green bodies or pre-forms with well-defined density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
- C04B2235/781—Nanograined materials, i.e. having grain sizes below 100 nm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
- C04B2235/785—Submicron sized grains, i.e. from 0,1 to 1 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
- C04B2235/85—Intergranular or grain boundary phases
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Definitions
- the present invention relates to a composite polycrystal.
- This application claims priority based on Japanese Patent Application No. 2015-214035 filed on Oct. 30, 2015, and incorporates all the content described in the Japanese Patent Application. .
- the sintered body or polycrystalline body containing diamond is used as a material for wear-resistant tools, cutting tools and the like.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-292397 (Patent Document 1) is a polycrystalline body composed of diamond obtained by converting and sintering a carbon material having a graphite-type layered structure under ultrahigh pressure and high temperature without adding a sintering aid or a catalyst.
- a diamond polycrystal having an average particle diameter of diamond of 100 nm or less and a purity of 99% or more is disclosed.
- a non-diamond carbon material is placed in a pressure cell equipped with a means for indirectly heating, and heating and pressurizing are performed to produce a polycrystalline diamond by direct conversion without the addition of a sintering aid or a catalyst.
- a method is disclosed.
- Patent Document 2 is a polycrystalline diamond obtained by conversion and sintering from non-diamond-type carbon without addition of a sintering aid or a catalyst under ultra-high pressure and high temperature,
- the sintered diamond particles constituting the polycrystalline diamond have an average particle size of more than 50 nm and less than 2500 nm, a purity of 99% or more, and a diamond D90 particle size of (average particle size + average particle size ⁇ 0.9) or less is disclosed.
- Patent Document 3 Japanese Patent Application Laid-Open No. 9-142933 is characterized in that a substance comprising a rare earth element oxide and / or carbonate and / or carbide is contained in an amount of 0.1 to 30% by volume, and the balance is diamond. A diamond polycrystal is disclosed.
- JP-A-2005-239472 is a high-strength, high-abrasion-resistant diamond sintered body comprising sintered diamond particles having an average particle diameter of 2 ⁇ m or less and the remaining binder phase,
- the content of sintered diamond particles in the diamond sintered body is 80% by volume or more and 98% by volume or less, and the content in the binder phase is 0.5% by mass or more and less than 50% by mass, titanium, zirconium, hafnium
- the binder phase comprises at least one element selected from the group consisting of vanadium, niobium, tantalum, chromium, and molybdenum, and cobalt whose content in the binder phase is 50 mass% or more and less than 99.5 mass%.
- a part of or all of the particles are present as carbide particles having an average particle size of 0.8 ⁇ m or less, the structure of the carbide particles is discontinuous, and adjacent sintered diamond particles are bonded to each other. ⁇ Disclose high-abrasion resistant diamond sintered bodies.
- the composite polycrystalline body of the present disclosure includes polycrystalline diamond formed by bonding diamond particles directly to each other and non-diamond-like carbon dispersed in the polycrystalline diamond, and has a hydrogen concentration of 1000 ppm or less .
- FIG. 1 is a schematic cross-sectional view of a composite polycrystalline body according to an embodiment of the present invention.
- the diamond polycrystal disclosed in Japanese Patent Application Laid-Open No. 2003-292397 (Patent Document 1) and International Publication No. 2009/099130 (Patent Document 2) causes local wear when applied to a wire drawing die which is a wear-resistant tool.
- the drawing resistance during wire drawing increases, the wire diameter after drawing decreases and wire breakage increases.
- tool life is shortened due to local wear, chipping due to impact, etc. There was a problem.
- the diamond polycrystal or sintered body disclosed in JP-A-9-142933 (Patent Document 3) and JP-A-2005-239472 (Patent Document 4) is applied to a wire drawing die which is a wear-resistant tool. Included when applied to a scribe wheel or excavation bit, which is a cutting tool, because the friction coefficient of the metal oxide and metal contained in the metal increases and the wire drawing resistance increases, the wire diameter after drawing decreases and the wire breakage increases. There is a problem that the cutting coefficient is increased because the friction coefficient is increased by the metal oxide and the metal, and the tool life is shortened due to internal fracture due to thermal expansion of the contained metal.
- the problem that the tool life is shortened is related to wear of the polycrystalline diamond or sintered body. Then, it aims at providing the composite polycrystalline body containing the polycrystalline diamond and non-diamond-like carbon with high abrasion resistance used suitably as materials, such as a wear-resistant tool and a cutting tool.
- the composite polycrystalline body containing polycrystalline diamond and non-diamond-like carbon with high wear resistance which is suitably used as a material for wear-resistant tools and cutting tools. Since such a composite polycrystal has high wear resistance, the tool life can be extended in order to prevent the tool life from being shortened due to wear.
- a composite polycrystalline body according to an embodiment of the present invention includes polycrystalline diamond formed by diamond particles bonded directly to each other, and non-diamond-like carbon dispersed in the polycrystalline diamond, and has a hydrogen concentration. 1000 ppm or less.
- the composite polycrystal of the present embodiment has high wear resistance because the hydrogen concentration is 1000 ppm or less.
- the phase of polycrystalline diamond is three-dimensionally continuous.
- Such a composite polycrystal has higher wear resistance.
- the average particle diameter of diamond particles forming polycrystalline diamond is 10 nm or more and 500 nm or less. Such a composite polycrystal has higher wear resistance.
- the average particle diameter of non-diamond carbon is 10 nm or more and 500 nm or less.
- Such a composite polycrystal has higher wear resistance.
- the ratio of the non-diamond-like carbon to the entire composite polycrystal of the present embodiment is expressed as the area of the X-ray diffraction peak derived from the (002) plane of non-diamond-like carbon in the X-ray diffraction profile of the composite polycrystal.
- the value of 100 ⁇ Ig (002) / ⁇ Id (111) + Ig (002) ⁇ when the area of the X-ray diffraction peak derived from the (111) plane of the polycrystalline diamond is Id (111) is (002)
- the content is preferably 0.1% or more and 30% or less. Such a composite polycrystal has higher wear resistance.
- the non-diamond carbon is preferably graphite.
- Such a composite polycrystal has higher wear resistance.
- the non-diamond carbon is preferably amorphous carbon.
- Such a composite polycrystal has higher wear resistance.
- the composite polycrystal of the present embodiment preferably has a Knoop hardness of 50 GPa or more. Such a composite polycrystal has higher wear resistance.
- the composite polycrystalline body of the present embodiment includes polycrystalline diamond formed by bonding diamond particles directly to each other and non-diamond-like carbon dispersed in the polycrystalline diamond, and the hydrogen concentration is 1000 ppm or less.
- the phase of polycrystalline diamond is three-dimensionally continuous
- the average particle size of diamond particles forming polycrystalline diamond is 10 nm or more and 500 nm or less
- the average particle size of non-diamond carbon is 10 nm or more and 500 nm or less
- the ratio of the non-diamond-like carbon to the entire composite polycrystal is expressed by the area of the X-ray diffraction peak derived from the (002) plane of non-diamond-like carbon in the X-ray diffraction profile of the composite polycrystal Ig ( 002) and the area of the X-ray diffraction peak derived from the (111) plane of polycrystalline diamond is Id (1 1)
- composite polycrystalline body 10 of the present embodiment includes polycrystalline diamond 11 formed by directly bonding diamond particles to each other, and non-diamond-like carbon 12 dispersed in polycrystalline diamond 11. And the hydrogen concentration is 1000 ppm or less.
- the composite polycrystalline body of the present embodiment has a hydrogen concentration of 1000 ppm or less, preferably 500 ppm or less, and more preferably 300 ppm or less, from the viewpoint of high wear resistance.
- the polycrystalline diamond 11 and the non-diamond-like carbon 12 contained in the composite polycrystalline body 10 are observed by SEM (scanning electron microscope) or TEM (transmission electron microscope). In SEM observation or TEM observation, polycrystalline diamond 11 is confirmed as a bright field, and non-diamond-like carbon 12 is confirmed as a dark field. Moreover, the hydrogen concentration of the composite polycrystalline body 10 is measured by SIMS (secondary ion mass spectrometry).
- the diamond particles being directly bonded to each other means that the diamond particles are bonded so that the diamond particles are in direct contact with each other. This refers to bonding to each other without intervention. It is confirmed by SEM observation or TEM observation that the diamond particles are directly bonded to each other.
- the phase of the polycrystalline diamond 11 is preferably three-dimensionally continuous from the viewpoint of higher wear resistance.
- that the phase of the polycrystalline diamond 11 is three-dimensionally continuous means that the phase of the polycrystalline diamond 11 is a continuous phase that exists continuously in a three-dimensional space.
- the average particle diameter of diamond particles forming the polycrystalline diamond 11 is preferably 10 nm or more and 500 nm or less, and more preferably 30 nm or more and 300 nm or less from the viewpoint of higher wear resistance.
- the average particle diameter of the non-diamond-like carbon 12 is preferably 10 nm or more and 500 nm or less, and more preferably 30 nm or more and 300 nm or less, from the viewpoint of higher wear resistance.
- the average particle diameter of the diamond particles forming the polycrystalline diamond in the composite polycrystalline body 10 and the average particle diameter of the non-diamond-like carbon mean a diameter having an area equal to the average cross-sectional area of each particle.
- the proportion of the non-diamond-like carbon 12 to the entire composite polycrystalline body 10 of the present embodiment is the non-diamond in the X-ray diffraction profile of the composite polycrystalline body 10 from the viewpoint of higher wear resistance of the composite polycrystalline body 10.
- the area of the X-ray diffraction peak derived from the (002) plane of the glassy carbon 12 is Ig (002)
- the area of the X-ray diffraction peak derived from the (111) plane of the polycrystalline diamond 11 is Id (111)
- the value of 100 ⁇ Ig (002) / ⁇ Id (111) + Ig (002) ⁇ is preferably 0.1% or more and 30% or less, and more preferably 0.5% or more and 25% or less.
- the X-ray diffraction profile of the composite polycrystalline body 10 is measured by a 2 ⁇ scan method using a K ⁇ ray of Cu as a radiation source.
- the non-diamond-like carbon 12 is preferably graphite from the viewpoint of higher wear resistance.
- the non-diamond-like carbon 12 is preferably amorphous carbon from the viewpoint of higher wear resistance.
- the composite polycrystalline body 10 of the present embodiment has a Knoop hardness of preferably 50 GPa or more, more preferably 60 GPa or more, from the viewpoint of higher wear resistance.
- the composite polycrystalline body 10 of the present embodiment includes polycrystalline diamond 11 formed by diamond particles directly bonded to each other, and non-diamond-like carbon dispersed in the polycrystalline diamond 11. 12, the hydrogen concentration is 1000 ppm or less, the phase of the polycrystalline diamond 11 is three-dimensionally continuous, and the average particle size of the diamond particles forming the polycrystalline diamond 11 is 10 nm or more and 500 nm or less.
- the non-diamond-like carbon 12 has an average particle diameter of 10 nm or more and 500 nm or less, and the ratio of the non-diamond-like carbon 12 to the entire composite polycrystalline body 10 is determined by the non-diamond in the X-ray diffraction profile of the composite polycrystalline body 10.
- the area of the X-ray diffraction peak derived from the (002) plane of glassy carbon 12 is expressed as Ig (002)
- the value of 100 ⁇ Ig (002) / ⁇ Id (111) + Ig (002) ⁇ when the area of the X-ray diffraction peak derived from the (111) plane of the polycrystalline diamond 11 is Id (111) is 0. 1% or more and 30% or less, non-diamond-like carbon 12 is either graphite or amorphous carbon, and Knoop hardness is 50 GPa or more.
- the method for producing the composite polycrystalline body 10 of the present embodiment is not particularly limited, but non-diamond carbon is prepared as a raw material from the viewpoint of efficiently and inexpensively manufacturing the composite polycrystalline body 10 having high wear resistance. It is preferable to include a raw material preparation step for performing the composite polycrystal body forming step for forming the composite polycrystal body by sintering the raw material under conditions of temperature and pressure at which the diamond phase is formed.
- the raw material non-diamond carbon prepared in the raw material preparation step may be a powder or a molded body.
- the average particle diameter of the powder or the average particle diameter of the particles forming the compact is preferably 10 nm or more, more preferably 30 nm or more, and 1,000 nm from the viewpoint of higher wear resistance of the obtained composite polycrystal. The following is preferable, and 300 nm or less is more preferable.
- the raw material non-diamond-like carbon is preferably graphite from the viewpoint of forming a high-quality and high-purity composite polycrystal, and the purity of graphite is preferably 99% by mass or more, and 99.5% by mass or more. More preferred.
- the raw material non-diamond-like carbon preferably has a hydrogen concentration of 1000 ppm or less, and more preferably 500 ppm or less, from the viewpoint of increasing the wear resistance of the resulting diamond composite polycrystal.
- the hydrogen concentration of graphite which is a raw material non-diamond-like carbon, is measured by a temperature programmed desorption gas analysis method or the like.
- the sintering conditions are not particularly limited as long as the conditions of temperature and pressure at which the diamond phase is formed, but the ratio of the non-diamond-like carbon phase that efficiently forms the diamond phase
- a temperature of 1800 ° C. to 2500 ° C. and a pressure of 8 GPa to 15 GPa are preferable.
- the high-temperature and high-pressure generator for generating such high temperature and high pressure is not particularly limited, and examples thereof include a belt type, a cubic type, and a split sphere type.
- Examples 1 to 5 The composite polycrystals related to Examples 1 to 5 were produced by the following method. First, as a starting material, a graphite compact having a density of 1.85 g / cm 3 and a purity of 99.95% by mass or more was prepared by stamping graphite particles having an average particle diameter of 50 to 200 nm (raw material preparation step). Next, the graphite molded body prepared above is put in a capsule made of a refractory metal, and is held for 20 minutes at the temperature and pressure described in Table 1 (“Synthesis conditions” column) using a high-pressure generator. The graphite compact was converted into diamond and sintered (composite polycrystalline body forming step). As a result, various composite polycrystalline diamonds were obtained.
- Comparative Example 1 A composite polycrystal related to Comparative Example 1 was produced by the following method. First, as a starting material, a graphite compact having a density of 1.85 g / cm 3 and a purity of 99.95% by mass was prepared by embossing graphite particles having an average particle diameter of 200 nm (raw material preparation step). Next, the graphite molded body prepared above is put in a capsule made of a refractory metal, and is held for 20 minutes at the temperature and pressure described in Table 1 (“Synthesis conditions” column) using a high-pressure generator. The graphite compact was converted into diamond and sintered (composite polycrystalline body forming step).
- Comparative Example 2 A composite polycrystal related to Comparative Example 2 was produced by the following method. First, as a starting material, a graphite powder having a density of 1.80 g / cm 3 and a purity of 99.5% by mass is prepared by extruding a graphite powder pulverized with a planetary ball mill to an average particle size of less than 10 nm. (Raw material preparation process). Next, the graphite molded body prepared above is put in a capsule made of a refractory metal, and is held for 20 minutes at the temperature and pressure described in Table 1 (“Synthesis conditions” column) using a high-pressure generator. The graphite compact was converted into diamond and sintered (composite polycrystalline body forming step).
- the polycrystalline diamond phase (polycrystalline diamond phase) and non-diamond-like carbon phase (non-diamond-like carbon phase) in the composite polycrystal confirmed.
- diamond particles are directly bonded to each other in the polycrystalline diamond phase in the composite polycrystal, and the polycrystalline diamond phase is tertiary. It was confirmed that it was originally continuous.
- the X-ray diffraction profile of the composite polycrystal was measured by a 2 ⁇ scan method using an X-ray having a K ⁇ ray of Cu as a radiation source, and was derived from the (002) plane of non-diamond carbon 12.
- the value of (002) ⁇ was calculated.
- Knoop hardness of the composite polycrystals of Examples 1 to 5 and Comparative Examples 1 and 2 was measured with a microhardness meter using a diamond Knoop indenter at a load of 4.9 N.
- a composite polycrystal sample is processed to have a diameter ⁇ 2 mm ⁇ height 2 mm, joined to the sample holder with an active brazing material, processed into a conical shape with a tip angle of 120 °, and the tip of the cone is
- a flat sample surface having a diameter ⁇ of 0.3 ⁇ 0.005 mm serving as a test surface was formed by skiff polishing to prepare a truncated cone-shaped diamond sample piece.
- this sample piece is attached to the main spindle of the machining center as a tool, and an air cylinder is used to apply a constant load to the sample piece at an air pressure of 0.3 MPa, and an alumina (Al 2 O 3 ) sintered body plate (particle size : Several microns, purity: 99.9%).
- the size of the Al 2 O 3 sintered body plate was 100 ⁇ 100 ⁇ 0.1 mm, and the trajectory of the tool was set so that the sample piece had a spiral pattern.
- the moving speed of the tool was 5 m / min, the sliding distance was 10 km, and the sliding time was 2000 min.
- the amount of wear was calculated by measuring the spread of the tip diameter after the sliding test. The results are summarized in Table 1.
- Example 1 contains polycrystalline diamond formed by direct bonding of diamond particles and non-diamond-like carbon dispersed in polycrystalline diamond, and contains hydrogen
- the composite polycrystal having a concentration of 1000 ppm or less has high wear resistance.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Composite Materials (AREA)
- Carbon And Carbon Compounds (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
特開2003-292397号公報(特許文献1)および国際公開第2009/099130号(特許文献2)に開示されるダイヤモンド多結晶体は、耐摩耗工具である伸線ダイスに適用すると、局所摩耗により伸線時の引抜抵抗が増大し伸後の線径が小さくなり断線が多くなり、切削工具であるスクライブホイールや掘削用ビットに適用すると、局所摩耗、衝撃による欠けなどにより工具寿命が短くなるという問題点があった。
[本開示の効果]
かかる態様によれば、耐摩耗工具、切削工具などの材料として好適に用いられる耐摩耗性の高い、多結晶ダイヤモンドと非ダイヤモンド状炭素とを含む複合多結晶体を提供できる。かかる複合多結晶体は、耐摩耗性が高いことから、摩耗により工具寿命が短くなるのを防ぐため、工具寿命を延ばすことができる。
本発明のある実施形態である複合多結晶体は、ダイヤモンド粒子が互いに直接結合して形成される多結晶ダイヤモンドと、多結晶ダイヤモンド中に分散される非ダイヤモンド状炭素とを含み、含有水素濃度が1000ppm以下である。本実施形態の複合多結晶体は、含有水素濃度が1000ppm以下であるため、耐摩耗性が高い。
(複合多結晶体)
図1を参照して、本実施形態の複合多結晶体10は、ダイヤモンド粒子が互いに直接結合して形成される多結晶ダイヤモンド11と、多結晶ダイヤモンド11中に分散される非ダイヤモンド状炭素12とを含み、含有水素濃度が1000ppm以下である。本実施形態の複合多結晶体は、耐摩耗性が高い観点から、含有水素濃度が1000ppm以下であり、500ppm以下が好ましく、300ppm以下がより好ましい。
本実施形態の複合多結晶体10の製造方法は、特に制限はないが、耐摩耗性の高い複合多結晶体10を効率よくかつ低コストで製造する観点から、原料として非ダイヤモンド状炭素を準備する原料準備工程と、上記原料をダイヤモンド相が形成される温度および圧力の条件で焼結することにより複合多結晶体10を形成する複合多結晶体形成工程と、を含むことが好ましい。
実施例1~5に関わる複合多結晶体を以下の方法で作製した。まず、出発物質として、平均粒径50~200nmのグラファイト粒子を型押し成形された、密度1.85g/cm3、純度99.95質量%以上のグラファイト成形体を準備した(原料準備工程)。次いで、上記で準備したグラファイト成形体を高融点金属からなるカプセルに入れ、高圧発生装置を用いて、表1(「合成条件」の欄)に記載した温度および圧力において20分間保持することにより、グラファイト成形体をダイヤモンドに変換させ、かつ焼結させた(複合多結晶体形成工程)。これにより各種の複合多結晶ダイヤモンドを得た。
比較例1に関わる複合多結晶体を以下の方法で作製した。まず、出発物質として、平均粒径200nmのグラファイト粒子を型押し成形された、密度1.85g/cm3、純度99.95質量%のグラファイト成形体を準備した(原料準備工程)。次いで、上記で準備したグラファイト成形体を高融点金属からなるカプセルに入れ、高圧発生装置を用いて、表1(「合成条件」の欄)に記載した温度および圧力において20分間保持することにより、グラファイト成形体をダイヤモンドに変換させ、かつ焼結させた(複合多結晶体形成工程)。
比較例2に関わる複合多結晶体を以下の方法で作製した。まず、出発物質として、グラファイト粉末を、遊星ボールミルで平均粒径10nm未満に微粉砕したものを型押し成形して、密度1.80g/cm3、純度99.5質量%のグラファイト成形体を準備した(原料準備工程)。次いで、上記で準備したグラファイト成形体を高融点金属からなるカプセルに入れ、高圧発生装置を用いて、表1(「合成条件」の欄)に記載した温度および圧力において20分間保持することにより、グラファイト成形体をダイヤモンドに変換させ、かつ焼結させた(複合多結晶体形成工程)。
Claims (9)
- ダイヤモンド粒子が互いに直接結合して形成される多結晶ダイヤモンドと、前記多結晶ダイヤモンド中に分散される非ダイヤモンド状炭素と、を含み、
含有水素濃度が1000ppm以下である複合多結晶体。 - 前記多結晶ダイヤモンドの相が三次元的に連続している請求項1に記載の複合多結晶体。
- 前記多結晶ダイヤモンドを形成する前記ダイヤモンド粒子の平均粒径が10nm以上500nm以下である請求項1または請求項2に記載の複合多結晶体。
- 前記非ダイヤモンド状炭素の平均粒径が10nm以上500nm以下である請求項1から請求項3のいずれか1項に記載の複合多結晶体。
- 前記複合多結晶体の全体に対する前記非ダイヤモンド状炭素の占める割合は、前記複合多結晶体のX線回折プロファイルにおいて前記非ダイヤモンド状炭素の(002)面に由来するX線回折ピークの面積をIg(002)とし前記多結晶ダイヤモンドの(111)面に由来するX線回折ピークの面積をId(111)とするときの100×Ig(002)/{Id(111)+Ig(002)}の値が、0.1%以上30%以下である請求項1から請求項4のいずれか1項に記載の複合多結晶体。
- 前記非ダイヤモンド状炭素がグラファイトである請求項1から請求項5のいずれか1項に記載の複合多結晶体。
- 前記非ダイヤモンド状炭素がアモルファスカーボンである請求項1から請求項5のいずれか1項に記載の複合多結晶体。
- ヌープ硬度が50GPa以上である請求項1から請求項7のいずれか1項に記載の複合多結晶体。
- ダイヤモンド粒子が互いに直接結合して形成される多結晶ダイヤモンドと、前記多結晶ダイヤモンド中に分散される非ダイヤモンド状炭素と、を含み、
含有水素濃度が1000ppm以下であり、
前記多結晶ダイヤモンドの相が三次元的に連続しており、
前記多結晶ダイヤモンドを形成する前記ダイヤモンド粒子の平均粒径が10nm以上500nm以下であり、
前記非ダイヤモンド状炭素の平均粒径が10nm以上500nm以下であり、
前記複合多結晶体の全体に対する前記非ダイヤモンド状炭素の占める割合は、前記複合多結晶体のX線回折プロファイルにおいて前記非ダイヤモンド状炭素の(002)面に由来するX線回折ピークの面積をIg(002)とし前記多結晶ダイヤモンドの(111)面に由来するX線回折ピークの面積をId(111)とするときの100×Ig(002)/{Id(111)+Ig(002)}の値が、0.1%以上30%以下であり、
前記非ダイヤモンド状炭素がグラファイトおよびアモルファスカーボンのいずれかであり、
ヌープ硬度が50GPa以上である複合多結晶体。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/534,323 US10118861B2 (en) | 2015-10-30 | 2016-10-07 | Composite polycrystal |
CN201680004607.4A CN107108229B (zh) | 2015-10-30 | 2016-10-07 | 复合多晶体 |
PL16859533T PL3369705T3 (pl) | 2015-10-30 | 2016-10-07 | Kompozyt polikrystaliczny |
EP20187772.7A EP3763689B1 (en) | 2015-10-30 | 2016-10-07 | Polycrystalline composite |
ES16859533T ES2821651T3 (es) | 2015-10-30 | 2016-10-07 | Compuesto policristalino |
JP2017547710A JP6724928B2 (ja) | 2015-10-30 | 2016-10-07 | 複合多結晶体 |
EP16859533.8A EP3369705B1 (en) | 2015-10-30 | 2016-10-07 | Polycrystalline composite |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015214035 | 2015-10-30 | ||
JP2015-214035 | 2015-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017073296A1 true WO2017073296A1 (ja) | 2017-05-04 |
Family
ID=58630302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/079937 WO2017073296A1 (ja) | 2015-10-30 | 2016-10-07 | 複合多結晶体 |
Country Status (7)
Country | Link |
---|---|
US (1) | US10118861B2 (ja) |
EP (2) | EP3369705B1 (ja) |
JP (2) | JP6724928B2 (ja) |
CN (1) | CN107108229B (ja) |
ES (2) | ES2942298T3 (ja) |
PL (2) | PL3763689T3 (ja) |
WO (1) | WO2017073296A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019146353A1 (ja) * | 2018-01-24 | 2019-08-01 | 住友電気工業株式会社 | 複合多結晶ダイヤモンド及びその製造方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109589870A (zh) * | 2019-01-13 | 2019-04-09 | 吉林大学 | 一种石墨烯强化聚晶金刚石制备方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003292397A (ja) * | 2002-04-01 | 2003-10-15 | Techno Network Shikoku Co Ltd | ダイヤモンド多結晶体およびその製造方法 |
JP2004131336A (ja) * | 2002-10-11 | 2004-04-30 | Sumitomo Electric Ind Ltd | ダイヤモンド多結晶体およびその製造方法 |
JP2004168554A (ja) * | 2002-11-15 | 2004-06-17 | Japan Science & Technology Agency | 高純度高硬度超微粒ダイヤモンド焼結体とその製造法 |
JP2007022888A (ja) * | 2005-07-21 | 2007-02-01 | Sumitomo Electric Ind Ltd | 高硬度ダイヤモンド多結晶体およびその製造方法 |
JP2007055819A (ja) * | 2005-08-22 | 2007-03-08 | Sumitomo Electric Ind Ltd | 高硬度ダイヤモンド多結晶体及びその製造方法 |
JP2008180568A (ja) * | 2007-01-24 | 2008-08-07 | Sumitomo Electric Ind Ltd | ダイヤモンド圧子 |
WO2009099130A1 (ja) * | 2008-02-06 | 2009-08-13 | Sumitomo Electric Industries, Ltd. | ダイヤモンド多結晶体 |
JP2011195407A (ja) * | 2010-03-23 | 2011-10-06 | Sumitomo Electric Ind Ltd | ダイヤモンドの剥離方法及び剥離装置 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3913280A (en) * | 1971-01-29 | 1975-10-21 | Megadiamond Corp | Polycrystalline diamond composites |
US3816085A (en) * | 1971-01-29 | 1974-06-11 | Megadiamond Corp | Diamond-nondiamond carbon polycrystalline composites |
JPS5433509A (en) * | 1977-08-20 | 1979-03-12 | Sumitomo Electric Industries | Highhhardness sintered body and method of making same |
US4242106A (en) * | 1979-01-02 | 1980-12-30 | General Electric Company | Composite of polycrystalline diamond and/or cubic boron nitride body/silicon carbide substrate |
JPH09142933A (ja) | 1995-11-21 | 1997-06-03 | Sumitomo Electric Ind Ltd | ダイヤモンド焼結体及びその製造方法 |
US6447852B1 (en) * | 1999-03-04 | 2002-09-10 | Ambler Technologies, Inc. | Method of manufacturing a diamond composite and a composite produced by same |
US6416865B1 (en) * | 1998-10-30 | 2002-07-09 | Sumitomo Electric Industries, Ltd. | Hard carbon film and surface acoustic-wave substrate |
JP2002060733A (ja) * | 2000-08-17 | 2002-02-26 | Ishizuka Kenkyusho:Kk | ダイヤモンド研磨材粒子及びその製法 |
US20080019098A1 (en) * | 2002-10-11 | 2008-01-24 | Chien-Min Sung | Diamond composite heat spreader and associated methods |
JP2004158554A (ja) * | 2002-11-05 | 2004-06-03 | Rorze Corp | 薄板状物スピン装置およびこれを用いた薄板状物処理システム |
SE0301117L (sv) * | 2003-04-14 | 2004-10-15 | Skeleton Technologies Ag | Metod att tillverka en diamantkomposit |
JP2004339412A (ja) * | 2003-05-16 | 2004-12-02 | Ishizuka Kenkyusho:Kk | 研磨材用サブミクロンダイヤモンド粉及びその製造方法 |
EP2641868B1 (en) * | 2003-12-11 | 2018-04-11 | Sumitomo Electric Industries, Ltd. | High-hardness conductive diamond polycrystalline body and method for producing same |
JP4542799B2 (ja) | 2004-02-25 | 2010-09-15 | 住友電工ハードメタル株式会社 | 高強度・高耐摩耗性ダイヤモンド焼結体およびその製造方法 |
JP2009067609A (ja) * | 2007-09-11 | 2009-04-02 | Sumitomo Electric Ind Ltd | 高純度ダイヤモンド多結晶体およびその製造方法 |
JP5432610B2 (ja) * | 2009-06-30 | 2014-03-05 | 住友電気工業株式会社 | ダイヤモンド多結晶体 |
CN103732535B (zh) * | 2011-07-28 | 2016-07-06 | 住友电气工业株式会社 | 多晶金刚石及其制造方法 |
CN103813872A (zh) * | 2011-08-02 | 2014-05-21 | 第六元素研磨剂股份有限公司 | 多晶金刚石结构及其制备方法 |
JP2014129218A (ja) * | 2012-11-30 | 2014-07-10 | Sumitomo Electric Ind Ltd | ダイヤモンド多結晶体およびその製造方法、ならびに工具 |
JP2015214035A (ja) | 2014-05-07 | 2015-12-03 | 株式会社長山鉄工所 | 成形品の製造方法 |
-
2016
- 2016-10-07 US US15/534,323 patent/US10118861B2/en active Active
- 2016-10-07 ES ES20187772T patent/ES2942298T3/es active Active
- 2016-10-07 PL PL20187772.7T patent/PL3763689T3/pl unknown
- 2016-10-07 ES ES16859533T patent/ES2821651T3/es active Active
- 2016-10-07 EP EP16859533.8A patent/EP3369705B1/en active Active
- 2016-10-07 PL PL16859533T patent/PL3369705T3/pl unknown
- 2016-10-07 WO PCT/JP2016/079937 patent/WO2017073296A1/ja active Application Filing
- 2016-10-07 EP EP20187772.7A patent/EP3763689B1/en active Active
- 2016-10-07 JP JP2017547710A patent/JP6724928B2/ja active Active
- 2016-10-07 CN CN201680004607.4A patent/CN107108229B/zh active Active
-
2020
- 2020-03-02 JP JP2020035112A patent/JP6939928B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003292397A (ja) * | 2002-04-01 | 2003-10-15 | Techno Network Shikoku Co Ltd | ダイヤモンド多結晶体およびその製造方法 |
JP2004131336A (ja) * | 2002-10-11 | 2004-04-30 | Sumitomo Electric Ind Ltd | ダイヤモンド多結晶体およびその製造方法 |
JP2004168554A (ja) * | 2002-11-15 | 2004-06-17 | Japan Science & Technology Agency | 高純度高硬度超微粒ダイヤモンド焼結体とその製造法 |
JP2007022888A (ja) * | 2005-07-21 | 2007-02-01 | Sumitomo Electric Ind Ltd | 高硬度ダイヤモンド多結晶体およびその製造方法 |
JP2007055819A (ja) * | 2005-08-22 | 2007-03-08 | Sumitomo Electric Ind Ltd | 高硬度ダイヤモンド多結晶体及びその製造方法 |
JP2008180568A (ja) * | 2007-01-24 | 2008-08-07 | Sumitomo Electric Ind Ltd | ダイヤモンド圧子 |
WO2009099130A1 (ja) * | 2008-02-06 | 2009-08-13 | Sumitomo Electric Industries, Ltd. | ダイヤモンド多結晶体 |
JP2011195407A (ja) * | 2010-03-23 | 2011-10-06 | Sumitomo Electric Ind Ltd | ダイヤモンドの剥離方法及び剥離装置 |
Non-Patent Citations (2)
Title |
---|
HITOSHI SUMIYA ET AL.: "High Pressure Synthesis of High-Purity Polycrystalline Diamonds by Direct Conversion from Various Carbon Materials and their Characterization", THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY, vol. 16, no. 3, 20 August 2006 (2006-08-20), pages 207 - 215, XP055109771 * |
See also references of EP3369705A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019146353A1 (ja) * | 2018-01-24 | 2019-08-01 | 住友電気工業株式会社 | 複合多結晶ダイヤモンド及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP3369705B1 (en) | 2020-09-30 |
EP3369705A1 (en) | 2018-09-05 |
US10118861B2 (en) | 2018-11-06 |
PL3369705T3 (pl) | 2021-03-08 |
PL3763689T3 (pl) | 2023-07-31 |
ES2942298T3 (es) | 2023-05-31 |
ES2821651T3 (es) | 2021-04-27 |
EP3369705A4 (en) | 2019-06-19 |
JP2020111503A (ja) | 2020-07-27 |
JP6724928B2 (ja) | 2020-07-15 |
EP3763689A1 (en) | 2021-01-13 |
US20170334787A1 (en) | 2017-11-23 |
JP6939928B2 (ja) | 2021-09-22 |
CN107108229B (zh) | 2021-11-19 |
JPWO2017073296A1 (ja) | 2018-08-16 |
EP3763689B1 (en) | 2023-04-05 |
CN107108229A (zh) | 2017-08-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3266756B1 (en) | Polycrystalline diamond body, cutting tool, wear-resistant tool, and grinding tool | |
JP6741016B2 (ja) | 複合多結晶体 | |
JP6939928B2 (ja) | 複合多結晶体 | |
WO2015166730A1 (ja) | 複合焼結体 | |
WO2017073297A1 (ja) | 複合多結晶体 | |
CN107207358B (zh) | 复合多晶体及其制造方法 | |
CN106164017B (zh) | 复合烧结体 | |
JP2019019052A (ja) | 複合焼結体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2017547710 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2016859533 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15534323 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16859533 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |