CN107434415B - Polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity and production method thereof - Google Patents
Polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity and production method thereof Download PDFInfo
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- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229910052582 BN Inorganic materials 0.000 title claims abstract description 62
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052758 niobium Inorganic materials 0.000 claims description 9
- 239000010955 niobium Substances 0.000 claims description 9
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 9
- 239000011863 silicon-based powder Substances 0.000 claims description 9
- 230000002194 synthesizing effect Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 abstract description 15
- 239000010959 steel Substances 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 14
- 238000003754 machining Methods 0.000 abstract description 10
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 8
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 8
- 239000007767 bonding agent Substances 0.000 abstract description 8
- 239000010962 carbon steel Substances 0.000 abstract description 8
- 239000000919 ceramic Substances 0.000 abstract description 8
- 229910017052 cobalt Inorganic materials 0.000 abstract description 8
- 239000010941 cobalt Substances 0.000 abstract description 8
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052721 tungsten Inorganic materials 0.000 abstract description 8
- 239000010937 tungsten Substances 0.000 abstract description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000007747 plating Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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- 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
- C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/583—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on boron nitride
- C04B35/5831—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on boron nitride based on cubic boron nitrides or Wurtzitic boron nitrides, including crystal structure transformation of powder
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Abstract
The invention belongs to the technical field of superhard materials, and particularly relates to a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity and a production method thereof. The product is obtained by adopting high-content nickel-plated cubic boron nitride particles and a bonding agent such as tungsten, cobalt, aluminum or aluminum ceramic, the nickel-plated cubic boron nitride particles have large granularity, high thermal conductivity, high concentration, excellent fracture toughness and impact resistance and high chemical inertia, and have longer service life, heat resistance and thermal stability in high-speed finish machining of difficult-to-cut materials such as quenched steel, cast iron, carbon steel, die steel and the like.
Description
Technical Field
The invention belongs to the technical field of superhard materials, and particularly relates to a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity and a production method thereof.
Background
At present, in high-speed finish machining of materials which are difficult to cut, such as quenched steel, cast iron, carbon steel and the like, the cutter machining materials are required to have high thermal stability and good thermal conductivity, and the cutter composite sheet materials such as polycrystalline diamond and the like are easy to break due to overhigh temperature in the cutting process, so that the working efficiency is influenced. The hardness of the cubic boron nitride is second to that of diamond, has high thermal stability and strong chemical stability, and can effectively replace a polycrystalline diamond compact as a material of a ferrous metal machining cutter.
At present, polycrystalline cubic boron nitride cutter manufacturers produced in China basically rely on imported polycrystalline cubic boron nitride composite sheet materials in developed countries in the western world, and the price is high. The existing production process is basically as follows; the polycrystalline cubic boron nitride layer is prepared from the following raw materials in parts by weight: 70-85 parts of cubic boron nitride micro powder, 10-15 parts of metal bonding agent and 5-10 parts of ceramic additive. The production method is carried out according to the following steps: A. mixing uniformly; B. and (3) putting the mixture and the hard alloy matrix into a molybdenum cup isolated by a salt tube shielding layer, heating and synthesizing. However, the thermal stability and thermal conductivity of the polycrystalline cubic boron nitride composite sheet produced by the existing process are to be further improved, so that there is a need for further research on the production process of the polycrystalline cubic boron nitride composite sheet.
Disclosure of Invention
The invention aims to provide a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity and a production method thereof, so as to improve the thermal stability and the thermal conductivity of the polycrystalline cubic boron nitride composite sheet.
In order to solve the technical problems, the invention adopts the following technical scheme:
the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity is prepared from the following raw materials: 80-87% of nickel-plated cubic boron nitride particles, 1-3% of aluminum powder, 1-3% of metal niobium, 1-5% of vanadium carbide and the balance of silicon powder.
Preferably, the nickel plated cubic boron nitride particles have a particle size of 2 to 4 microns.
Preferably, the diameter of the aluminum powder is less than 5 microns.
The invention relates to a production method of a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity, which comprises the following steps: preparing raw materials by using a formula of 80-87% of nickel-plated cubic boron nitride particles, 1-3% of aluminum powder, 1-3% of metal niobium, 1-5% of vanadium carbide and the balance of silicon powder, mixing the raw materials together for 8-15 hours, and synthesizing the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity in a cubic hydraulic press with a cylinder diameter of 750 under the conditions of 90-100MPa and 1400-1600 ℃ after assembly for 30-50 minutes.
The invention has the following beneficial effects:
1. the product obtained by adopting high-content nickel-plated cubic boron nitride particles and a bonding agent such as tungsten, cobalt, aluminum or aluminum ceramic has the advantages of large granularity, high thermal conductivity, high concentration, excellent fracture toughness and impact resistance, high chemical inertness, longer service life, higher heat resistance and higher thermal stability in high-speed finish machining of difficult-to-cut materials such as quenched steel, cast iron, carbon steel, die steel and the like.
2. The invention adopts tungsten, cobalt, aluminum and other diversified catalyst systems to synthesize the cubic boron nitride crystal, which can increase the reaction activity of the system and promote the growth speed of the cubic boron nitride crystal.
3. The invention adopts a plurality of catalyst combinations to produce cubic boron nitride crystals with various colors (different grades).
4. The invention can effectively ensure the growth integrity of the cubic boron nitride crystal through high-temperature impurity removal.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention relates to a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity, which comprises the following steps: preparing raw materials by using a formula of 80% of nickel-plated cubic boron nitride particles, 1% of aluminum powder, 3% of metal niobium, 5% of vanadium carbide and the balance of silicon powder, mixing the raw materials together for 8 hours, and synthesizing the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity in a cubic hydraulic press with a cylinder diameter of 750 under the conditions of 100MPa and 1600 ℃ after assembly, wherein the synthesis time is 30 minutes.
Wherein the grain size of the cubic boron nitride grain of the cubic nickel plating is 2.5 microns; the diameter of the aluminum powder is 5 microns.
The production method adopts the product obtained by high-content nickel-plated cubic boron nitride particles and a bonding agent such as tungsten, cobalt, aluminum or aluminum ceramic, the nickel-plated cubic boron nitride particles have large granularity, high thermal conductivity, high concentration, excellent fracture toughness and impact resistance and high chemical inertness, and have longer service life, heat resistance and heat stability in the high-speed finish machining of difficult-to-cut materials such as quenched steel, cast iron, carbon steel, die steel and the like.
Example 2
The invention relates to a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity, which comprises the following steps: preparing raw materials by using a formula of 82% of nickel-plated cubic boron nitride particles, 1.4% of aluminum powder, 1.8% of metal niobium, 2.5% of vanadium carbide and the balance of silicon powder, mixing the raw materials together for 0111 hour, and synthesizing the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity in a cubic hydraulic press with a cylinder diameter of 750 under the conditions of 92MPa and 1450 ℃ after assembly, wherein the synthesis time is 40 minutes.
Wherein the grain size of the cubic boron nitride grain of the cubic nickel plating is 3.5 microns; the diameter of the aluminum powder is 4.9 microns.
The production method adopts the product obtained by high-content nickel-plated cubic boron nitride particles and a bonding agent such as tungsten, cobalt, aluminum or aluminum ceramic, the nickel-plated cubic boron nitride particles have large granularity, high thermal conductivity, high concentration, excellent fracture toughness and impact resistance and high chemical inertness, and have longer service life, heat resistance and heat stability in the high-speed finish machining of difficult-to-cut materials such as quenched steel, cast iron, carbon steel, die steel and the like.
Example 3
The invention relates to a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity, which comprises the following steps: preparing raw materials by using a formula of 84% of nickel-plated cubic boron nitride particles, 1.8% of aluminum powder, 2.6% of metal niobium and 2% of vanadium carbide and the balance of silicon powder, mixing the raw materials together for 14 hours, and synthesizing the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity in a cubic hydraulic press with a cylinder diameter of 750 under the conditions of 94MPa and 1540 ℃ after assembly, wherein the synthesis time is 50 minutes.
Wherein the grain size of the cubic boron nitride grain of the cubic nickel plating is 2 microns; the diameter of the aluminum powder is 3.9 microns.
The production method adopts the product obtained by high-content nickel-plated cubic boron nitride particles and a bonding agent such as tungsten, cobalt, aluminum or aluminum ceramic, the nickel-plated cubic boron nitride particles have large granularity, high thermal conductivity, high concentration, excellent fracture toughness and impact resistance and high chemical inertness, and have longer service life, heat resistance and heat stability in the high-speed finish machining of difficult-to-cut materials such as quenched steel, cast iron, carbon steel, die steel and the like.
Example 4
The invention relates to a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity, which comprises the following steps: preparing raw materials according to a formula of 85% of nickel-plated cubic boron nitride particles, 2.2% of aluminum powder, 2% of metal niobium, 3% of vanadium carbide and the balance of silicon powder, mixing the raw materials together for 15 hours, and synthesizing the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity in a cubic hydraulic press with a cylinder diameter of 750 under the conditions of 98MPa and 1400 ℃ after assembly, wherein the synthesis time is 35 minutes.
Wherein the grain size of the cubic boron nitride grain of the cubic nickel plating is 2.8 microns; the diameter of the aluminum powder is 4.5 microns.
The production method adopts the product obtained by high-content nickel-plated cubic boron nitride particles and a bonding agent such as tungsten, cobalt, aluminum or aluminum ceramic, the nickel-plated cubic boron nitride particles have large granularity, high thermal conductivity, high concentration, excellent fracture toughness and impact resistance and high chemical inertness, and have longer service life, heat resistance and heat stability in the high-speed finish machining of difficult-to-cut materials such as quenched steel, cast iron, carbon steel, die steel and the like.
Example 5
The invention relates to a polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity, which comprises the following steps: the preparation method comprises the steps of preparing raw materials according to a formula that 87% of nickel-plated cubic boron nitride particles, 3% of aluminum powder, 1% of niobium metal, 4% of vanadium carbide and the balance of silicon powder, mixing the raw materials together for 2111 hour, assembling, and synthesizing the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity in a cubic hydraulic press with a cylinder diameter of 750 under the conditions of 90MPa and 1500 ℃ for 45 minutes.
Wherein the grain size of the cubic boron nitride grain of the cubic nickel plating is 3 microns; the diameter of the aluminum powder is 4 microns.
The production method adopts the product obtained by high-content nickel-plated cubic boron nitride particles and a bonding agent such as tungsten, cobalt, aluminum or aluminum ceramic, the nickel-plated cubic boron nitride particles have large granularity, high thermal conductivity, high concentration, excellent fracture toughness and impact resistance and high chemical inertness, and have longer service life, heat resistance and heat stability in the high-speed finish machining of difficult-to-cut materials such as quenched steel, cast iron, carbon steel, die steel and the like.
It is to be understood that the exemplary embodiments described herein are illustrative and not restrictive. While one or more embodiments of the present invention have been described, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (1)
1. The polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity is characterized by being prepared from the following raw materials: the production method of the polycrystalline cubic boron nitride composite sheet comprises the following steps of 80-87% of nickel-plated cubic boron nitride particles, 1-3% of aluminum powder, 1-3% of metal niobium, l-5% of vanadium carbide and the balance of silicon powder, wherein the diameter of the nickel-plated cubic boron nitride particles is 2-4 microns, the diameter of the aluminum powder is less than 5 microns, and the production method of the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity comprises the following steps: preparing raw materials by using a formula of 80-87% of nickel-plated cubic boron nitride particles, l-3% of aluminum powder, 1-3% of metal niobium, 1-5% of vanadium carbide and the balance of silicon powder, mixing the raw materials together for 8-15 hours, and synthesizing the polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity in a cubic hydraulic press with a cylinder diameter of 750 under the conditions of 90-100MP and 1400-1600 ℃ after assembly for 30-50 minutes.
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Denomination of invention: A polycrystalline cubic boron nitride composite sheet with high thermal stability and good thermal conductivity and its production method Granted publication date: 20201002 Pledgee: Bank of Jinhua Limited by Share Ltd. science and Technology Branch Pledgor: JINHUA ZHONGYE SUPERHARD MATERIAL COMPOSITE Co.,Ltd. Registration number: Y2024980006390 |