CN105671406A - Nitride-based high-entropy alloy ceramic binder special for PCBN - Google Patents
Nitride-based high-entropy alloy ceramic binder special for PCBN Download PDFInfo
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- CN105671406A CN105671406A CN201610092546.3A CN201610092546A CN105671406A CN 105671406 A CN105671406 A CN 105671406A CN 201610092546 A CN201610092546 A CN 201610092546A CN 105671406 A CN105671406 A CN 105671406A
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- Prior art keywords
- entropy alloy
- nitride
- alloy
- pcbn
- entropy
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/16—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on nitrides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0068—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only nitrides
Abstract
The invention discloses a nitride-based high-entropy alloy ceramic binder special for PCBN. The nitride-based high-entropy alloy ceramic binder is composed of, by mass percent, 20% to 65% of a high-entropy alloy and 35 % to 80% of nitride ceramics. A solid solution with the stable high mixing entropy can be formed by the high-entropy alloy, and a plurality of special effects, such as the high-entropy effect on the thermodynamics, the lattice distortion effect on the structure, the synergistic effect between multiple components, and the cocktail effect on the performance, can be generated. Thus, compared with a traditional alloy, the high-entropy alloy achieves homogenizing and alloying more easily, the melting point of the alloy is lower, and some excellent properties such as high strength, high hardness, high wear resistance, high electric resistance, high heat resistance, corrosion resistance and the like are achieved and are incomparable with the properties of the traditional alloy.
Description
Technical field
The invention belongs to polycrystalline cubic boron nitride (calling PCBN in the following text) superhard material manufacturing technology field, particularly relate to a kind of special nitride based high-entropy alloy vitrified bond of PCBN.
Technical background
Manufacture now the bonding agent that polycrystalline cubic boron nitride uses, have three classes: 1. metallic bond, by
Metal or alloy forms; 2. vitrified bond, only pottery composition. 3. ceramic metal bonding agent, is made up of pottery and metal or alloy; Generally it is made up of a kind of metal and one pottery, for instance Ni-Si3N4. The alloy used, conventional bianry alloy, for instance Ti-Al, at most use ternary alloy three-partalloy, for instance Ti-Al-Mo.
Existing PCBN bonding agent there is the problem that 1. glomerocryst sintering temperatures and pressure are significantly high; 2. glomerocryst product hardness and insufficient strength are high; 3. glomerocryst tissue and performance uniformity are poor, and product quality is not sufficiently stable.
Owing to there is these problems, the application of PCBN glomerocryst product is limited to, and the glomerocryst especially as cutter does not also pass a test, and to some hard tough alloy steel materials processing weak effects, also has some high-hardness metal materials to be difficult to. Such as, no matter processing cast iron, be dimond synneusis or PCBN glomerocryst now, and processing effect is all not ideal enough.
Summary of the invention
The present invention provides a kind of special nitride based high-entropy alloy vitrified bond of PCBN just for weak point existing in above-mentioned prior art.
It is an object of the invention to be realized by following technique measures:
The special nitride based high-entropy alloy vitrified bond of PCBN of the present invention is made up of the raw material of following mass percent, wherein: the high-entropy alloy of 20% ~ 65%, the nitride ceramics of 35% ~ 80%. Preferred version is that high-entropy alloy 35%, nitride ceramics 65% form by mass percent.
High-entropy alloy of the present invention include titanium that mass percent is 15% ~ 25%, 15% ~ 25% chromium, 15% ~ 25% vanadium, 10% ~ 20% cobalt, 10% ~ 20% aluminum, and the cerium of 0% ~ 5%; And the powder particle that described high-entropy alloy is particle diameter 5 ~ 40 μm.
High-entropy alloy preferred version of the present invention be by the titanium that mass percent is 25%, 25% chromium, 25% vanadium, 12% cobalt, 12% aluminum, 1% cerium composition.
Nitride ceramics of the present invention is by the titanium nitride of the silicon nitride that mass percent is 55% ~ 95%, 5% ~ 45%; And the powder particle that described nitride ceramics is particle diameter 5 ~ 40 μm.
Nitride ceramics preferred version of the present invention is made up of the titanium nitride of the silicon nitride that mass percent is 65%, 35%.
The consumption of the bonding agent of the present invention is as follows: synthesize in the manufacturing process of PCBN at high pressure-temperature, and the quality of nitride based high-entropy alloy vitrified bond and cubic boron nitride (CBN) dispensing is:
Bonding agent: CBN=10% ~ 30%:70% ~ 90%.
Preferred: bonding agent 20%, CBN80%.
Heretofore described high-entropy alloy can form the solid solution that the high entropy of mixing is stable, produce multiple special effects, such as high entropic effect thermodynamically, the cooperative effect between distortion of lattice effect in structure, multicomponent and " cocktail " effect etc. in performance. Therefore, compared with conventional alloys, high-entropy alloy is easier to realization and homogenizes and alloying, and alloy melting point is lower, has the excellent properties that some conventional alloys are incomparable, for instance high intensity, high rigidity, high abrasion, high resistance, high thermal resistance, corrosion resistance etc.
Therefore, high-entropy alloy is applied to PCBN high pressure-temperature sintering as bonding agent, is advantageously implemented sintering process, reduces sintering condition (sintering pressure, sintering temperature and sintering time), improves and stablizes glomerocryst product quality.
Beneficial effects of the present invention is as follows:
1. reduce CBN glomerocryst sintering pressure and temperature. Traditional handicraft wirking pressure is 4.5～6.5GPa, and heating is to 1450～1650 DEG C. Compared with original technique, apparent pressure (100MPa) reduces by 1～10MPa(and is equivalent to pressure reduction by 1%～10%), temperature declines 30～100 DEG C.
2. it is effectively improved PCBN polycrystalline quality. The glomerocryst produced has the features such as high rigidity (Vickers hardness 38～55GPa), shaking property of heat resistanceheat resistant and good high temperature creep. This glomerocryst is used successfully to manufacture cutting tool, it is possible to process both hard and tough high temperature resistant difficult-to-cut alloy Steel material, it is also possible to processing cast iron etc high rigidity difficult processing metal.
3. improve the stability of high pressure-temperature sintering process process and glomerocryst product quality. Product percent defective can reduce 1%～5%, and excellence rate reaches more than 90%.
Detailed description of the invention
The present invention is further described below with reference to embodiment:
Embodiment 1
1, high-entropy alloy powder is prepared
(1) take by mass percentage: titanium 25%, chromium 25%, vanadium 25%, cobalt 12%, aluminum 12%, cerium 1%.
(2) by pulverizing, sieve operation, above-mentioned raw materials preparation is become the powder particle of particle diameter 20 μm.
(3) the compound method of high-entropy alloy powder can adopt one of following two kinds of methods to carry out:
One of method: use elemental metals mixed powder. This method is easy and simple to handle, according to composition and the proportioning of invention requirement, carries out dispensing and batch mixing; Three-dimensional material mixer carries out ball mill mixing. The metal powder material mixed, it is possible to as the raw material for standby of bonding agent.
The two of method: use pre-alloyed powder. This method needs alloying in advance, then makes powder in order to using. Make high-entropy alloy powder in advance in order to using. Implement step as follows: the recipe requirements of the high-entropy alloy 1. provided one of according to the method described above carries out dispensing; 2. the method adopting vacuum melting, is placed in high temperature furnace by the material prepared, is smelted into high-entropy alloy; 3. then adopt atomization, melted alloy is made powder by atomization process, as bonding agent raw material in order to using.
2, nitride ceramics powder is prepared
(1) take by mass percentage: silicon nitride 65%, titanium nitride 35%.
(2) by pulverizing, sieve operation, above-mentioned raw materials preparation is become the powder particle of particle diameter 20 μm.
(3) the compound method of ceramics: according to composition and the proportioning of application claims, carry out dispensing and batch mixing. Three-dimensional material mixer carries out ball mill mixing. The ceramic powder mixed, it is possible to use prepared against by the raw material as bonding agent.
3, the preparation of bonding agent powder
By ready above two material, carry out dispensing according to the proportioning of high-entropy alloy 35% and nitride ceramics 65%, in three-dimensional material mixer, then carry out ball mill mixing. Compound properly preserves, and uses as the bonding agent manufacturing PCBN.
Embodiment 2
1, high-entropy alloy powder is prepared
(1) take by mass percentage: titanium 25%, chromium 25%, vanadium 25%, cobalt 13%, aluminum 12%.
(2) by pulverizing, sieve operation, above-mentioned raw materials preparation is become the powder particle of particle diameter 20 μm.
(3) the compound method of high-entropy alloy powder can adopt one of following two kinds of methods to carry out:
One of method: use elemental metals mixed powder. This method is easy and simple to handle, according to composition and the proportioning of invention requirement, carries out dispensing and batch mixing; Three-dimensional material mixer carries out ball mill mixing. The metal powder material mixed, it is possible to as the raw material for standby of bonding agent.
The two of method: use pre-alloyed powder. This method needs alloying in advance, then makes powder in order to using. Make high-entropy alloy powder in advance in order to using. Implement step as follows: the recipe requirements of the high-entropy alloy 1. provided one of according to the method described above carries out dispensing; 2. the method adopting vacuum melting, is placed in high temperature furnace by the material prepared, is smelted into high-entropy alloy; 3. then adopt atomization, melted alloy is made powder by atomization process, as bonding agent raw material in order to using.
2, nitride ceramics powder is prepared
(1) take by mass percentage: silicon nitride 70%, titanium nitride 30%.
(2) by pulverizing, sieve operation, above-mentioned raw materials preparation is become the powder particle of particle diameter 20 μm.
(3) the compound method of ceramics: according to composition and the proportioning of application claims, carry out dispensing and batch mixing. Three-dimensional material mixer carries out ball mill mixing. The ceramic powder mixed, it is possible to use prepared against by the raw material as bonding agent.
3, the preparation of bonding agent powder
By ready above two material, carry out dispensing according to the proportioning of high-entropy alloy 40% and nitride ceramics 60%, in three-dimensional material mixer, then carry out ball mill mixing. Compound properly preserves, and uses as the bonding agent manufacturing PCBN.
Embodiment 3
1, high-entropy alloy powder is prepared
(1) take by mass percentage: titanium 24%, chromium 25%, vanadium 24%, cobalt 13%, aluminum 13%, cerium 1%.
(2) by pulverizing, sieve operation, above-mentioned raw materials preparation is become the powder particle of particle diameter 20 μm.
(3) the compound method of high-entropy alloy powder can adopt one of following two kinds of methods to carry out:
One of method: use elemental metals mixed powder. This method is easy and simple to handle, according to composition and the proportioning of invention requirement, carries out dispensing and batch mixing; Three-dimensional material mixer carries out ball mill mixing. The metal powder material mixed, it is possible to as the raw material for standby of bonding agent.
The two of method: use pre-alloyed powder. This method needs alloying in advance, then makes powder in order to using. Make high-entropy alloy powder in advance in order to using. Implement step as follows: the recipe requirements of the high-entropy alloy 1. provided one of according to the method described above carries out dispensing; 2. the method adopting vacuum melting, is placed in high temperature furnace by the material prepared, is smelted into high-entropy alloy;3. then adopt atomization, melted alloy is made powder by atomization process, as bonding agent raw material in order to using.
2, nitride ceramics powder is prepared
(1) take by mass percentage: silicon nitride 65%, titanium nitride 35%.
(2) by pulverizing, sieve operation, above-mentioned raw materials preparation is become the powder particle of particle diameter 20 μm.
(3) the compound method of ceramics: according to composition and the proportioning of application claims, carry out dispensing and batch mixing. Three-dimensional material mixer carries out ball mill mixing. The ceramic powder mixed, it is possible to use prepared against by the raw material as bonding agent.
3, the preparation of bonding agent powder
By ready above two material, carry out dispensing according to the proportioning of high-entropy alloy 20% and nitride ceramics 80%, in three-dimensional material mixer, then carry out ball mill mixing. Compound properly preserves, and uses as the bonding agent manufacturing PCBN.
Claims (5)
1. the special nitride based high-entropy alloy vitrified bond of PCBN, it is characterised in that: it is made up of the raw material of following mass percent, wherein: the high-entropy alloy of 20% ~ 65%, the nitride ceramics of 35% ~ 80%.
2. the special nitride based high-entropy alloy vitrified bond of PCBN according to claim 1, it is characterized in that: described high-entropy alloy include titanium that mass percent is 15% ~ 25%, 15% ~ 25% chromium, 15% ~ 25% vanadium, 10% ~ 20% cobalt, 10% ~ 20% aluminum, and the cerium of 0% ~ 5%; And the powder particle that described high-entropy alloy is particle diameter 5 ~ 40 μm.
3. the special nitride based high-entropy alloy vitrified bond of PCBN according to claim 1, it is characterised in that: described nitride ceramics is by the titanium nitride of the silicon nitride that mass percent is 55% ~ 95%, 5% ~ 45%; And the powder particle that described nitride ceramics is particle diameter 5 ~ 40 μm.
4. the special nitride based high-entropy alloy vitrified bond of PCBN according to claim 1, it is characterised in that: described high-entropy alloy by the titanium that mass percent is 25%, 25% chromium, 25% vanadium, 12% cobalt, the aluminum of 12%, the cerium of 1% form.
5. the special nitride based high-entropy alloy vitrified bond of PCBN according to claim 1, it is characterised in that: described nitride ceramics is made up of the titanium nitride of the silicon nitride that mass percent is 65%, 35%.
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| CN201610092546.3A CN105671406A (en) | 2016-02-19 | 2016-02-19 | Nitride-based high-entropy alloy ceramic binder special for PCBN |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111455301A (en) * | 2020-04-24 | 2020-07-28 | 常州大学 | Wear-resistant corrosion-resistant high-entropy alloy gradient composite coating of outer cylinder of measurement-while-drilling instrument |
| WO2021203695A1 (en) * | 2020-04-09 | 2021-10-14 | 中国科学院化学研究所 | Nitride high-entropy ceramic fiber, preparation method thereof, and application thereof |
| CN114351026A (en) * | 2022-01-12 | 2022-04-15 | 富耐克超硬材料股份有限公司 | Polycrystalline cubic boron nitride composite material |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1827817A (en) * | 2006-04-14 | 2006-09-06 | 韶关学院 | Hard alloy sintered by high-entropy alloy binder and compound carbide and preparation method thereof |
| CN101418394A (en) * | 2007-10-23 | 2009-04-29 | 财团法人工业技术研究院 | Superhard composite material and method for preparation thereof |
| CN101591194A (en) * | 2009-05-13 | 2009-12-02 | 桂林矿产地质研究院 | A kind of composite material for superhard cutting tool |
| CN102049538A (en) * | 2009-10-28 | 2011-05-11 | 河南富耐克超硬材料有限公司 | Cubic boron nitride blade and preparation method thereof |
| CN102061417A (en) * | 2009-11-13 | 2011-05-18 | 厦门理工学院 | Nano silicon nitride and boron nitride reinforced titanium carbonitride based cermet |
| CN102557647A (en) * | 2011-12-13 | 2012-07-11 | 河南富耐克超硬材料股份有限公司 | Polycrystalline cubic boron nitride compound material |
| CN103030397A (en) * | 2012-11-29 | 2013-04-10 | 燕山大学 | Preparation method of polycrystalline cubic boron nitride (PcBN) composite material |
| CN103789596A (en) * | 2014-02-26 | 2014-05-14 | 中原工学院 | Polycrystalline cubic boron nitride cutter material and preparation method thereof |
| CN104772711A (en) * | 2015-03-25 | 2015-07-15 | 富耐克超硬材料股份有限公司 | Polycrystalline cubic boron nitride abrasive and preparation method thereof |
| CN105063455A (en) * | 2015-08-24 | 2015-11-18 | 珠海市钜鑫科技开发有限公司 | Cutter material containing cubic boron nitride, ceramics and metal and preparation method of cutter material |
-
2016
- 2016-02-19 CN CN201610092546.3A patent/CN105671406A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1827817A (en) * | 2006-04-14 | 2006-09-06 | 韶关学院 | Hard alloy sintered by high-entropy alloy binder and compound carbide and preparation method thereof |
| CN101418394A (en) * | 2007-10-23 | 2009-04-29 | 财团法人工业技术研究院 | Superhard composite material and method for preparation thereof |
| CN101591194A (en) * | 2009-05-13 | 2009-12-02 | 桂林矿产地质研究院 | A kind of composite material for superhard cutting tool |
| CN102049538A (en) * | 2009-10-28 | 2011-05-11 | 河南富耐克超硬材料有限公司 | Cubic boron nitride blade and preparation method thereof |
| CN102061417A (en) * | 2009-11-13 | 2011-05-18 | 厦门理工学院 | Nano silicon nitride and boron nitride reinforced titanium carbonitride based cermet |
| CN102557647A (en) * | 2011-12-13 | 2012-07-11 | 河南富耐克超硬材料股份有限公司 | Polycrystalline cubic boron nitride compound material |
| CN103030397A (en) * | 2012-11-29 | 2013-04-10 | 燕山大学 | Preparation method of polycrystalline cubic boron nitride (PcBN) composite material |
| CN103789596A (en) * | 2014-02-26 | 2014-05-14 | 中原工学院 | Polycrystalline cubic boron nitride cutter material and preparation method thereof |
| CN104772711A (en) * | 2015-03-25 | 2015-07-15 | 富耐克超硬材料股份有限公司 | Polycrystalline cubic boron nitride abrasive and preparation method thereof |
| CN105063455A (en) * | 2015-08-24 | 2015-11-18 | 珠海市钜鑫科技开发有限公司 | Cutter material containing cubic boron nitride, ceramics and metal and preparation method of cutter material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021203695A1 (en) * | 2020-04-09 | 2021-10-14 | 中国科学院化学研究所 | Nitride high-entropy ceramic fiber, preparation method thereof, and application thereof |
| CN111455301A (en) * | 2020-04-24 | 2020-07-28 | 常州大学 | Wear-resistant corrosion-resistant high-entropy alloy gradient composite coating of outer cylinder of measurement-while-drilling instrument |
| CN114351026A (en) * | 2022-01-12 | 2022-04-15 | 富耐克超硬材料股份有限公司 | Polycrystalline cubic boron nitride composite material |
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Application publication date: 20160615 |