CN115466870A - Method for improving binding force of hard alloy substrate and coating - Google Patents

Method for improving binding force of hard alloy substrate and coating Download PDF

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CN115466870A
CN115466870A CN202211131377.1A CN202211131377A CN115466870A CN 115466870 A CN115466870 A CN 115466870A CN 202211131377 A CN202211131377 A CN 202211131377A CN 115466870 A CN115466870 A CN 115466870A
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hard alloy
coating
oxide
improving
bonding force
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CN115466870B (en
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佘俊杰
吴宗
何伟坚
贺鹏
袁美和
谭文清
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Oke Precision Cutting Tools Co ltd
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Oke Precision Cutting Tools Co ltd
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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
    • 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
    • C22C1/053—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds
    • 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
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0688—Cermets, e.g. mixtures of metal and one or more of carbides, nitrides, oxides or borides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/34—Sputtering

Abstract

The invention discloses a method for improving the binding force of a hard alloy matrix and a coating, wherein the hard alloy matrix contains metal oxide particles, and the coating contains metal elements corresponding to metal oxides. According to the invention, the bonding force of the coating and the substrate is obviously improved by combining oxide dispersion strengthening and PVD coating. The high hardness and the high wear resistance of the hard alloy matrix are ensured, and the binding force between the hard alloy matrix and the high-toughness and high-oxidation-resistance coating is enhanced. Thereby optimizing cutting performance and prolonging service life. In addition, the preparation method of adding the oxide by using the oxide precursor salt solution improves the current situations of uneven dispersion strengthening and stress concentration of the oxide, so that the cutter has better wear resistance and longer service life.

Description

Method for improving binding force between hard alloy substrate and coating
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a method for improving the bonding force of a hard alloy matrix and a coating.
Background
Cemented carbides are materials prepared by powder metallurgy from refractory metal hard compounds and a metal binder. The traditional hard alloy is a two-phase alloy consisting of a polygonal WC phase and a binder phase Co, has high hardness, high wear resistance and higher high-temperature hardness, and is mainly applied to the field of machining at present. With the development of science and technology, the application of hard alloy is more and more extensive, and people have higher and higher requirements for the performance of the hard alloy. On one hand, research finds that the characteristic properties of the hard alloy, including hardness, strength, toughness, wear resistance and the like, can be improved by adding carbides of other metal elements (tantalum, niobium, chromium and vanadium); on the other hand, people have been actively researching coated cutters, and by coating a layer of hard compound (such as TiC, tiN and the like) on the surface of the hard alloy, the service life and the processing efficiency of the cutter can be obviously improved. Coated tools are currently an important component of the cemented carbide tool market. In order to improve the hardness, wear resistance and oxidation resistance of cemented carbide tools, attention has been paid in recent years to multi-component composite coatings that can meet the demands. The bonding strength between the coating and the alloy substrate is a key factor for restricting the service life of the coated cutter, and the requirement on the bonding strength is higher along with the continuous improvement of the processing precision and the gradual complexity of the processing working condition.
The Chinese patent with publication number CN104120322B discloses a method for improving the binding force of a hard alloy substrate and a coating, wherein the hard alloy is a superfine pure plate-shaped crystal WC-Co hard alloy, and simultaneously contains Cr, V and rare earth additives, and WC superfine crystal grains in the alloy with the X-ray diffraction peak intensity ratio corresponding to WC (0001) crystal faces and crystal faces on the surface of an alloy sintered body are regular triangular prism plate-shaped nano crystal grains. The technical scheme can improve the film-substrate binding force and stability between the metal nitride PVD coating and the hard alloy substrate, has higher requirements on the hard alloy substrate, is not suitable for popularization and use, and neglects the matching between the coating and the hard alloy substrate.
Disclosure of Invention
The invention aims to provide a method for improving the coating bonding force of a coated hard alloy cutter aiming at the defects in the prior art, oxide particles contained in a hard alloy matrix can be subjected to dispersion strengthening, and metal elements corresponding to oxides are contained in the coating to improve the bonding force with the matrix.
The purpose of the invention is realized by the following technical scheme:
a method for improving the binding force of a hard alloy matrix and a coating, wherein the hard alloy matrix contains metal oxide particles, and the coating contains metal elements corresponding to metal oxides. Further, the metal oxide in the hard alloy matrix is at least one of yttrium oxide, iron oxide, aluminum oxide, molybdenum oxide and zirconium oxide.
Further, the metal element in the coating is at least one of yttrium, iron, aluminum, molybdenum and zirconium.
Furthermore, the mass fraction of the metal oxide in the hard alloy matrix is 1-20%, and the mass fraction of the metal element corresponding to the metal oxide in the coating is 2-10%.
The method for improving the bonding force of the hard alloy substrate and the coating comprises the following steps:
s1, preparing a hard alloy raw material, a metal oxide or a metal oxide precursor, then uniformly mixing the raw material and a forming agent, wet-grinding and sieving to obtain matrix mixed powder containing the oxide or the oxide precursor;
s2, pressing and sintering the matrix mixed powder prepared in the step S1 to obtain a hard alloy matrix containing oxides;
and S3, coating a coating containing metal elements corresponding to the metal oxides on the surface of the hard alloy substrate prepared in the step S2 to obtain the coated hard alloy cutter.
Further, the forming agent in the step S1 is paraffin or polyethylene glycol, and when the forming agent is applied to the hard alloy preparation process, the forming agent can play a role in lubrication when the alloy is extruded in a die, so that the pressure during extrusion molding is reduced, the demolding of the hard alloy is facilitated, and the forming agent has good thermoplasticity, so that the forming agent is doped in the hard alloy, and the forming efficiency of the hard alloy can be improved in the calcining and extruding processes.
Further, the wet grinding equipment in the step S1 is a ball mill, and the ball milling medium is absolute ethyl alcohol.
Further, the metal oxide precursor is dissolved in deionized water to form a salt solution, and the salt solution is mixed with the raw material powder and the ball milling medium.
Further, in the step S2, low-pressure sintering is adopted in the sintering process, the protective atmosphere is argon, the argon is inert gas, the chemical property is very stable, and the low-pressure sintering process is applied to the low-pressure sintering process, so that the low-pressure sintering process does not react with oxygen, nitrogen and other substances in the air.
Further, the coating in the step S3 is a PVD coating, and is formed through an ion sputtering process, the PVD coating has the characteristics of high hardness, strong wear resistance, good high-temperature oxidation resistance and the like, and the PVD coating is deposited on the surface of a traditional hard alloy cutter as a wear-resistant coating, so that the cutting efficiency and the processing quality of materials difficult to process can be greatly improved.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the bonding force of the coating and the substrate is obviously improved by combining oxide dispersion strengthening and PVD coating. The bonding force between the hard alloy matrix and a high-toughness and high-oxidation-resistance coating is enhanced while the high hardness and high wear resistance of the hard alloy matrix are ensured; thereby optimizing cutting performance and prolonging service life.
The preparation method of the invention utilizes the salt solution of the oxide precursor to add the oxide, improves the current situations of uneven dispersion strengthening and stress concentration of the oxide, and leads the cutter to have better wear resistance and longer service life.
Drawings
FIG. 1: example 2 flank wear pictures after failure;
FIG. 2 is a schematic diagram: example 3, comparative example 1, is a picture of flank wear after failure;
FIG. 3: example 4, i.e., flank wear picture after failure for comparative example 2;
FIG. 4: example 2 coating and substrate scratch pictures;
FIG. 5: example 3, comparative example 1, coating and substrate scratch pictures;
FIG. 6: example 4, comparative example 2, coating and substrate scratch pictures.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
Example 1
This embodiment 1 provides a method for improving the bonding force between a cemented carbide substrate and a coating, where the cemented carbide substrate contains metal oxide particles, and the coating contains metal elements corresponding to the metal oxide. Further, the metal oxide in the hard alloy matrix is at least one of yttrium oxide, iron oxide, aluminum oxide, molybdenum oxide and zirconium oxide.
Further, the metal element in the coating is at least one of yttrium, iron, aluminum, molybdenum and zirconium.
Furthermore, the mass fraction of the metal oxide in the hard alloy matrix is 1-20%, and the mass fraction of the metal oxide corresponding to the metal element in the coating is 2-10%.
The method for improving the bonding force of the hard alloy substrate and the coating comprises the following steps:
s1, preparing a hard alloy raw material and a metal oxide or a metal oxide precursor, uniformly mixing the raw material and a forming agent, wet-grinding and sieving to obtain matrix mixed powder containing the oxide or the oxide precursor;
s2, pressing and sintering the matrix mixed powder prepared in the step S1 to obtain a hard alloy matrix containing oxides;
and S3, coating a coating containing metal elements corresponding to the metal oxides on the surface of the hard alloy substrate prepared in the step S2 to obtain the coated hard alloy cutter.
Further, the forming agent in the step S1 is paraffin or polyethylene glycol, and when the forming agent is applied to the hard alloy preparation process, the forming agent can play a role in lubrication when the alloy is extruded in a die, so that the pressure during extrusion molding is reduced, the demolding of the hard alloy is facilitated, and the forming agent has good thermoplasticity, so that the forming agent is doped in the hard alloy, and the forming efficiency of the hard alloy can be improved in the calcining and extruding processes.
Further, the wet grinding equipment in the step S1 is a ball mill, and the ball milling medium is absolute ethyl alcohol.
Further, after the metal oxide precursor is dissolved by deionized water, a salt solution is formed and mixed with the raw material powder and the ball milling medium.
Further, the sintering process in step S2 is low pressure sintering, and the main process is to press the powder prepared in step S1 by using a press machine, and then to sinter the powder. The sintering process comprises the following steps: the method comprises the steps of putting a pressed block into a sintering furnace in an argon atmosphere for sintering, firstly, vacuumizing a furnace body, then flowing high-purity argon and keeping a certain argon flow, sintering the pressed block in the furnace in a flowing argon atmosphere at a certain pressure, wherein the highest temperature of sintering is 1410 ℃, the sintering pressure is 55bar, and the performance of a product obtained after sintering is stable.
Further, the coating in the step S3 is a PVD coating, and is formed through an ion sputtering process, the PVD coating has the characteristics of high hardness, strong wear resistance, good high-temperature oxidation resistance and the like, and the PVD coating is deposited on the surface of a traditional hard alloy cutter as a wear-resistant coating, so that the cutting efficiency and the processing quality of materials difficult to process can be greatly improved.
According to the invention, the bonding force between the coating and the substrate is obviously improved by combining oxide dispersion strengthening and PVD coating. The high hardness and the high wear resistance of the hard alloy matrix are ensured, and the binding force between the hard alloy matrix and a high-toughness and high-oxidation-resistance coating is enhanced; thereby optimizing the cutting performance and prolonging the service life.
The preparation method of the invention utilizes the salt solution of the oxide precursor to add the oxide, improves the current situations of uneven dispersion strengthening and stress concentration of the oxide, and leads the cutter to have better wear resistance and longer service life.
Example 2
In this embodiment 2, the method for improving the bonding force between the cemented carbide substrate and the coating provided in embodiment 1 is adopted, and the technical scheme includes the following steps:
s1, preparing cemented carbide base powder containing oxide particles, wherein the raw materials are mixed according to the weight ratio of m (WC) m (Co) m (Y2O 3) =0.85:0.1:0.5 ratio of Y (NO) 3 ) 3 Dissolving deionized water to form a salt solution, fully stirring the solution and other powder for adding, using absolute ethyl alcohol as a ball milling medium, putting mixed powder (1 kg) and absolute ethyl alcohol (235 ml) into a 2.4L ball milling tank, adding polyethylene glycol with the mass fraction of 2% as a forming agent, wet-milling for 24h, and drying to obtain ball milling powder. The dried powder was sieved through a 60 mesh screen.
And S2, pressing the powder prepared in the step S1 by using a press machine, and then sintering. The sintering process comprises the following steps: the method comprises the steps of putting a pressed block into a sintering furnace in an argon atmosphere for sintering, firstly, vacuumizing a furnace body, then flowing high-purity argon and keeping a certain argon flow, sintering the pressed block in the furnace under the flowing argon atmosphere with a certain pressure, wherein the maximum sintering temperature is 1410 ℃ and the sintering pressure is 55bar, and the performance of a product obtained after sintering is stable.
And S3, coating the hard alloy substrate prepared in the step S2 with a PVD coating to obtain the coated hard cutter. The coating component is an AlCrTiSiN-Y yttrium-containing nitride coating, wherein the component ratio of aluminum, chromium, titanium, silicon and yttrium is 55:20:20;3:2.
example 3
Example 3 is comparative example 1 of example 2, and example 3 provides a method for improving the bonding force between a cemented carbide substrate and a coating, wherein the method takes a WC-10Co cemented carbide as a reference, and comprises the following steps:
s1, preparing hard alloy matrix powder, taking WC-10Co hard alloy as a reference, proportioning raw materials according to a ratio m (WC) to m (Co) =0.9 to 0.1, using absolute ethyl alcohol as a ball milling medium, placing mixed powder (1 kg) and absolute ethyl alcohol (235 ml) into a 2.4L ball milling tank, adding polyethylene glycol with the mass fraction of 2% as a forming agent, wet-milling for 24h, and drying to obtain ball milling powder. The dried powder was sieved through a 60 mesh screen.
And S2, pressing the powder prepared in the step S1 by using a press machine, and then sintering. The sintering process comprises the following steps: the method comprises the steps of putting a pressed block into a sintering furnace in an argon atmosphere for sintering, firstly, vacuumizing a furnace body, then flowing high-purity argon and keeping a certain argon flow, sintering the pressed block in the furnace under the flowing argon atmosphere with a certain pressure, wherein the maximum sintering temperature is 1410 ℃ and the sintering pressure is 55bar, and the performance of a product obtained after sintering is stable.
And S3, coating the hard alloy substrate prepared in the step S2 with a PVD coating to obtain the coated hard cutter. The coating component is an AlCrTiSiN-Y yttrium-containing nitride coating, wherein the ratio of aluminum, chromium, titanium, silicon and yttrium is 55:20:20;3:2.
example 4
Example 4 is comparative example 2 of example 2, and example 4 provides a method for improving the bonding force between a cemented carbide substrate and a coating, wherein the method is characterized in that the method takes a WC-10Co cemented carbide as a reference, and no metal element is added into a PVD coating, and the method comprises the following steps:
s1, preparing hard alloy matrix powder, taking WC-10Co hard alloy as reference, and taking m (WC) to m (Co) to m [ Y (NO) as raw materials 3 ) 3 ]=0.85:0.1:0.05 ratio, wherein Y (NO) 3 ) 3 Dissolving the mixture in deionized water to form a salt solution, fully stirring the solution and other powder for adding, using absolute ethyl alcohol as a ball milling medium, placing the mixed powder (1 kg) and the absolute ethyl alcohol (235 ml) in a 2.4L ball milling tank, adding polyethylene glycol with the mass fraction of 2% as a forming agent, wet-milling for 24h, and drying to obtain ball-milled powder. The dried powder was sieved through a 60 mesh sieve.
And S2, pressing the powder prepared in the step S1 by using a press machine, and then sintering. The sintering process comprises the following steps: the method comprises the steps of putting a pressed block into a sintering furnace in an argon atmosphere for sintering, firstly, vacuumizing the furnace body, then flowing high-purity argon and keeping a certain argon flow, sintering the pressed block in the furnace under a flowing argon atmosphere with a certain pressure, wherein the maximum temperature of sintering is 1410 ℃, the sintering pressure is 55bar, and the performance of a product obtained after sintering is stable.
S3, coating the hard alloy substrate prepared in the step S2 with a PVD coating to obtain a coated hard cutter, wherein the coating is a nitride coating of AlCrTiSiN, and the ratio of aluminum, chromium, titanium and silicon is 55:20:20; 5.
the coated inserts of example 2 and comparative examples 3 and 4 were evaluated for cutting performance, and the results of comparison of flank wear amounts are shown in table 1.
TABLE 1
Examples 6min(mm) 12min(mm) 21min(mm)
Example 2 0.14 0.15 0.33
Example 3 0.14 0.17 0.36
Example 4 0.15 0.34 Has failed
By comparing the wear amounts of the examples in table 1, example 2 provides a coated cutting tool with better wear resistance and longer cutting life than the comparative examples of examples 3 and 4.
To further compare the cutting performance of each example, each of example 2 and comparative examples 3 and 4 was selected and the wear patterns after the wear reached about 0.3mm, i.e., the blade failed, were compared. The results are shown in FIGS. 1 to 3.
The coating adhesion of each example was tested using a scratching instrument and the results are shown in table 2, and the scratch pictures are shown in fig. 4-6.
TABLE 2
Examples Combining force (N)
Example 2 80.0
Comparative example 3 63.5
Comparative example 4 75.1
According to the invention, the bonding force of the coating and the substrate is obviously improved by combining oxide dispersion strengthening and PVD coating. The high hardness and the high wear resistance of the hard alloy matrix are ensured, and the binding force with the high-toughness and high-oxidation-resistance coating is enhanced; thereby improving the cutting performance and the service life of the cutter.
It should be noted that, if directional indications (such as up, down, left, right, front, back, etc.) are involved in the embodiments of the present invention, the directional indications are only used for explaining the relative positional relationship, movement, etc. of the components in a certain posture (as shown in the drawing), and if the certain posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions contradicts each other or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Claims (10)

1. A method for improving the binding force of a hard alloy matrix and a coating is characterized in that the hard alloy matrix contains metal oxide particles, and the coating contains metal elements corresponding to metal oxides.
2. The method for improving the bonding force of a hard alloy matrix and a coating according to claim 1, wherein the metal oxide in the hard alloy matrix is at least one of yttrium oxide, iron oxide, aluminum oxide, molybdenum oxide and zirconium oxide.
3. The method for improving the bonding force of a hard alloy substrate and a coating according to claim 2, wherein the metal element in the coating is at least one of yttrium, iron, aluminum, molybdenum and zirconium.
4. The method for improving the bonding force of the hard alloy matrix and the coating according to claim 1, wherein the mass fraction of the metal oxide in the hard alloy matrix is 1-20%, and the mass fraction of the metal element corresponding to the metal oxide in the coating is 2-10%.
5. The method for improving the bonding force of a hard alloy substrate and a coating according to any one of claims 1 to 4, which is characterized by comprising the following steps:
s1, preparing a hard alloy raw material and a metal oxide or a metal oxide precursor, uniformly mixing the raw material and a forming agent, wet-grinding and sieving to obtain matrix mixed powder containing the oxide or the oxide precursor;
s2, pressing and sintering the matrix mixed powder prepared in the step S1 to obtain a hard alloy matrix containing oxides;
and S3, coating a coating containing metal elements corresponding to the metal oxides on the surface of the hard alloy substrate prepared in the step S2 to obtain the coated hard alloy cutter.
6. The method for improving the bonding force between the cemented carbide substrate and the coating according to claim 5, wherein the forming agent in step S1 is paraffin or polyethylene glycol.
7. The method for improving the bonding force of the hard alloy substrate and the coating according to claim 5, wherein the wet grinding device in the step S1 is a ball mill, and the ball milling medium is absolute ethyl alcohol.
8. The method for improving the bonding force between the hard alloy substrate and the hard alloy coating according to claim 5, wherein the metal oxide precursor is dissolved in deionized water to form a salt solution, and the salt solution is mixed with the raw material powder and the ball milling medium.
9. The method for improving the bonding force between the hard alloy substrate and the coating according to claim 5, wherein the sintering process in the step S2 adopts low-pressure sintering, and the protective atmosphere is argon.
10. The method for improving the bonding force between the hard alloy substrate and the coating according to claim 5, wherein the coating in the step S3 is a PVD coating and is formed through an ion sputtering process.
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US5643658A (en) * 1992-04-17 1997-07-01 Sumitomo Electric Industries, Ltd. Coated cemented carbide member
CN101568399B (en) * 2006-12-26 2011-07-27 特固克有限会社 Cutting tool
CN102560345A (en) * 2010-12-27 2012-07-11 常熟市宏达印染机械有限公司 Coating blade
CN104120322B (en) * 2014-08-01 2016-08-17 中南大学 A kind of hard alloy and the method improving its PVD coating film-substrate cohesion
CN109249027A (en) * 2018-08-22 2019-01-22 株洲欧科亿数控精密刀具股份有限公司 A kind of hard alloy numerical control blade of layer structure and preparation method thereof
CN112941462A (en) * 2021-01-28 2021-06-11 东莞市华升真空镀膜科技有限公司 Composite coating cutter and preparation method and application thereof
CN113235041A (en) * 2021-04-08 2021-08-10 广东工业大学 AlCrTiSiWMoN high-entropy alloy nitride coating and preparation method and application thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5643658A (en) * 1992-04-17 1997-07-01 Sumitomo Electric Industries, Ltd. Coated cemented carbide member
CN101568399B (en) * 2006-12-26 2011-07-27 特固克有限会社 Cutting tool
CN102560345A (en) * 2010-12-27 2012-07-11 常熟市宏达印染机械有限公司 Coating blade
CN104120322B (en) * 2014-08-01 2016-08-17 中南大学 A kind of hard alloy and the method improving its PVD coating film-substrate cohesion
CN109249027A (en) * 2018-08-22 2019-01-22 株洲欧科亿数控精密刀具股份有限公司 A kind of hard alloy numerical control blade of layer structure and preparation method thereof
CN112941462A (en) * 2021-01-28 2021-06-11 东莞市华升真空镀膜科技有限公司 Composite coating cutter and preparation method and application thereof
CN113235041A (en) * 2021-04-08 2021-08-10 广东工业大学 AlCrTiSiWMoN high-entropy alloy nitride coating and preparation method and application thereof

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