CN109666934A - A kind of hard alloy coating TiAlN coating - Google Patents
A kind of hard alloy coating TiAlN coating Download PDFInfo
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- CN109666934A CN109666934A CN201710960331.3A CN201710960331A CN109666934A CN 109666934 A CN109666934 A CN 109666934A CN 201710960331 A CN201710960331 A CN 201710960331A CN 109666934 A CN109666934 A CN 109666934A
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- Prior art keywords
- coating
- hard alloy
- tialn
- friction
- sample
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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
- 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
- C22C29/06—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 based on carbides, but not containing other metal compounds
- C22C29/08—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 based on carbides, but not containing other metal compounds based on tungsten carbide
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- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2204/00—End product comprising different layers, coatings or parts of cermet
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
In order to improve hardness, the wearability of hard alloy, it is prepared for a kind of hard alloy for coating TiAlN coating.Using chemical component for the hard alloy of WC64.5, (Ti, Ta, Nb) C25.5, Co10 is raw material, coats the hard alloy of TiAlN coating, and the hard alloy after coating has higher coefficient of friction.Hard alloy sample without coating is in friction process, and the time in the mixed film friction stage is longer, and the hard alloy after coating, coefficient of friction are relatively stable.The hard alloy of obtained coating TiAlN coating, hardness, wearability are all increased dramatically.The present invention can provide a kind of new production technology to prepare high performance hard alloy.
Description
Technical field
The present invention relates to a kind of cemented carbide material more particularly to a kind of hard alloy for coating TiAlN coating.
Background technique
Hard alloy is by one or more high rigidity, the interstitial compound of high-modulus and magnesium-yttrium-transition metal or its alloy group
At composite material.Hard alloy has high rigidity, high intensity, corrosion-resistant, wear-resistant, high elastic modulus, thermal expansion coefficient very
The features such as low and chemical stability is fine is widely used in terms of drilling tool, cutter, abrasion-proof corrosion-proof.WC-Co is hard
Matter alloy is known as " industrial tooth ", how to be targetedly grinding for the field according to purposes research or development high performance material
Study carefully hot spot.
Hard alloy belongs to fragile material, and hardness and strength, that is, contradiction between wearability and toughness is always to perplex its hair
The principal element of exhibition.The failure mode of cemented carbide parts is mainly surface abrasion under practical fretting wear operating condition.Using surface
Processing technique can improve carbide surface on the basis of not reducing hard alloy substrate toughness with enhancing hard alloy surface
Hardness and wearability, to extend cemented carbide parts service life.
Summary of the invention
The purpose of the invention is to improving the hardness of hard alloy, wearability, a kind of coating TiAlN coating is devised
Hard alloy.
The technical solution adopted by the present invention to solve the technical problems is:
Coat TiAlN coating hard alloy prepare raw material include: chemical component be WC64.5, (Ti, Ta, Nb) C25.5,
The hard alloy of Co10.
Coat the preparation step of the hard alloy of TiAlN coating are as follows: by raw material by experimental design weighing, ingredient, match
It is clear be put into progress ultrasonic wave in acetone after good, and is processed by shot blasting.Sample by polishing is cheated into square using dimple
The micro- texturing process progress TiAlN coating of shape array, about 6 μm of coating layer thickness.
Coat the detecting step of the hard alloy of TiAlN coating are as follows: quality is measured using CPA2250D type electronic balance, mill
Trace pattern uses JSM001F type scanning electron microscopic observation, and frictional behaviour uses UMT2 type frictional testing machine.
The hard alloy of the coating TiAlN coating, the hard alloy after coating have higher coefficient of friction.
For hard alloy sample without coating in friction process, the time in the mixed film friction stage is longer, and after coating
Hard alloy, coefficient of friction are relatively stable.
The hard alloy of the described coating TiAlN coating, in friction process, produced by the hard alloy sample without coating
Abrasion loss it is bigger, and abrasion loss is much larger than hard alloy after coating.The wear form of coating surface is to stick together and plough
Ditch.
The beneficial effects of the present invention are:
Using chemical component for the hard alloy of WC64.5, (Ti, Ta, Nb) C25.5, Co10 is raw material, by ingredient, ultrasonic wave
Cleaning, polishing, coating process are successfully prepared the hard alloy for coating TiAlN coating with excellent mechanical performance.Wherein, it passes through
The hard alloy sample for crossing coating has higher coefficient of friction and smaller frictional wear amount.Obtained coating TiAlN is applied
The hard alloy of layer, hardness, wearability are all increased dramatically.The present invention can provide to prepare high performance hard alloy
A kind of new production technology.
Specific embodiment
Case study on implementation 1:
Coat TiAlN coating hard alloy prepare raw material include: chemical component be WC64.5, (Ti, Ta, Nb) C25.5,
The hard alloy of Co10.Coat the preparation step of the hard alloy of TiAlN coating are as follows: raw material is weighed by experimental design,
It is clear to carry out being put into progress ultrasonic wave in acetone, and is processed by shot blasting for ingredient after preparing.By the sample by polishing using micro-
The micro- texturing process progress TiAlN coating of pit rectangular array, about 8 μm of coating layer thickness.Coat the inspection of the hard alloy of TiAlN coating
Survey step are as follows: quality is measured using CPA2250D type electronic balance, and grinding defect morphology uses JSM001F type scanning electron microscopic observation, is rubbed
It wipes performance and uses UMT2 type frictional testing machine.
Case study on implementation 2:
The raising of the friction coefficient relative friction speed significantly reduces, and matrix changes without texture coating sample skin-friction coefficient
It is not obvious, under 0.06m/s speed, matrix is in boundary lubrication without coating sample surface after texture and micro- texture, and base
Coating sample surface crater still has oil storage function and produces hydrodynamic lubrication effect around after the micro- texture of body.Diameter be 60,
70 and 80 μm of specimen surface coefficient of friction is lower than no texture sample, and 30 μm of diameter of texture specimen surface coefficient of friction and nothing
Texture specimen surface coefficient of friction changing rule is almost the same, but the friction later period coefficient of friction variation of texture sample is steady.Diameter
50 μm of texture specimen surface coefficient of frictions are greater than no texture sample.
Case study on implementation 3:
In friction velocity 0.04m/s, the variation of coating sample skin-friction coefficient is more gentle after texture；23.35 μ of pit depth
The specimen surface coefficient of friction of m is minimum, and later period variation tends to be steady, this illustrates that the depth is more suitable for, and other depth are knitted
The specimen surface coefficient of friction of structure does not reduce, and does not play the role of reducing coefficient of friction with the increase of base wells depth,
Sample is set to be in the boundary friction stage instead, pit depth increases so that coating surface forms pit and reduces, and surface roughness increases
Add to increase coefficient of friction.
Case study on implementation 4:
At friction velocity 0.06m/s, the micro- texture density of matrix is in 4%~14%, and coefficient of friction is nearly all in matrix without texture
Sample nearby fluctuates, and when micro- texture density is 16%, coefficient of friction becomes flat in 95s or so, and coefficient of friction ratio is without texture
Coating sample surface it is much smaller.
Case study on implementation 5:
At relative friction speed 0.04m/s, the coefficient of friction of coating surface is but than matrix without coating after texture after matrix texture
The coefficient of friction on surface is big, but coefficient of friction variation is more steady, under 0.04m/s speed, coating sample surface after micro- texture
Roughness becomes larger so that coefficient of friction is larger, and the vice division chief that makes to rub is in boundary lubrication, and the presence in its dimple hole has oil storage
Function, so that coefficient of friction variation is more gentle.TiAlN coating frictional behaviour is influenced in carbide surface micro- texture diameter
Maximum and friction reducing effect is preferable at 80 μm of diameter, the micro- texture density of carbide surface is to TiAlN coating stable friction factor
It influences preferable.Influence of the aspect ratio to coefficient of friction is very big, at 0.06m/s, when aspect ratio is greater than 1, and micro- texture coating sample
Coefficient of friction it is big compared with no texture coating sample.Micro- texture diameter and density on TiAlN coating surface coefficient of friction influence compared with
Greatly, texture density can be increased by reduction aspect ratio and in a certain range to improve coated cutting tool properties of antifriction and wear resistance.
Case study on implementation 6:
Under speed of the same race, the abrasion loss of coating sample is fewer than the abrasion loss of coating sample after no texture after general texture.And it is high
It is easy to happen and sticks together under speed.The abrasion loss of sample is twice of sample abrasion loss under 0.04m/s under speed 0.06m/s, and sample exists
Polishing machine is than good under 0.06m/s speed under 0.04m/s speed.Under speed of the same race, coating after texture, coating surface nature
The reason of presence reduction abrasion loss of the micro- texture formed, may reduce the secondary contact area of friction for micro- texture；Micro- texture produces
It has given birth to dynamic pressure and has improved bearing capacity；The micro- texturing process of part of matrix improves coating surface hardness.
Case study on implementation 7:
Opposite grinding part generates more ditch dug with a plow in coating surface, and coat adhering and contact fatique wear occurs in surface.Under high speed
Ditch dug with a plow quantity is less than under low speed.The ditch dug with a plow number that coating surface generates is considerably less than ditch dug with a plow number of the matrix without texture coating surface.
The polishing scratch of coating surface is wider than the polishing scratch under 0.04m/s speed under 0.06m/s speed, and have on polishing scratch significantly stick together and
Disbonding phenomenon.Coating surface under 0.04m/s speed has a plurality of apparent ditch dug with a plow, and at such speeds, the vice division chief that rubs is in side
Boundary's Frotteurism.In the case where the ditch dug with a plow number under 0.06m/s speed is less than 0.04m/s speed, there is dimple hole in part to be filled, but compare
Ditch dug with a plow under 0.04m/s speed is wide, and under 0.06m/s speed, and dimple hole can preferably play the role of storing abrasive dust.
Case study on implementation 8:
The ditch dug with a plow quantity of coating surface is more than under 0.06m/s speed under 0.04m/s speed, but width is small, in 0.06m/s speed
Under, dimple hole can preferably play the role of storing abrasive dust.The wear mechanism of coating sample is mainly shown as after the micro- texture of matrix
Sticking together phenomenon and ploughing phenomena, and high speed under ditch dug with a plow quantity minority low speed under ditch dug with a plow quantity, and ditch dug with a plow it is usual along with
Sticking together phenomenon.Compared with untextured, wear phenomenon is significantly reduced coating surface after the micro- texture of matrix, the presence of micro- texture
Reduce the secondary contact area of friction.
Claims (4)
1. it is a kind of coat TiAlN coating hard alloy prepare raw material include: chemical component be WC64.5, (Ti, Ta, Nb)
The hard alloy of C25.5, Co10.
2. the hard alloy of coating TiAlN coating according to claim 1, it is characterized in that the hard of coating TiAlN coating
The preparation step of alloy are as follows: by raw material by experimental design weighing, ingredient, be put into acetone after preparing and carry out ultrasonic wave
Clearly, it and is processed by shot blasting, the sample by polishing is subjected to TiAlN painting using the micro- texturing process of dimple hole rectangular array
Layer, about 6 μm of coating layer thickness.
3. the hard alloy of coating TiAlN coating according to claim 1, it is characterized in that the hard of coating TiAlN coating
The detecting step of alloy are as follows: quality is measured using CPA2250D type electronic balance, and grinding defect morphology uses JSM001F type scanning electron microscope
Observation, frictional behaviour use UMT2 type frictional testing machine.
4. the hard alloy of coating TiAlN coating according to claim 1, it is characterized in that the coating TiAlN coating
Hard alloy, hard alloy after coating has higher coefficient of friction, and the hard alloy sample without coating is rubbing
During wiping, the time in the mixed film friction stage is longer, and the hard alloy after coating, coefficient of friction are more steady
Determine, the hard alloy of the coating TiAlN coating, in friction process, mill caused by the hard alloy sample without coating
Damage amount is bigger, and abrasion loss is much larger than hard alloy after coating, and the wear form of coating surface is to stick together and ditch dug with a plow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710960331.3A CN109666934A (en) | 2017-10-16 | 2017-10-16 | A kind of hard alloy coating TiAlN coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710960331.3A CN109666934A (en) | 2017-10-16 | 2017-10-16 | A kind of hard alloy coating TiAlN coating |
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| Publication Number | Publication Date |
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| CN109666934A true CN109666934A (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710960331.3A Pending CN109666934A (en) | 2017-10-16 | 2017-10-16 | A kind of hard alloy coating TiAlN coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296149A (en) * | 2019-07-17 | 2019-10-01 | 浙江中达精密部件股份有限公司 | A kind of metal slide component and preparation method thereof |
-
2017
- 2017-10-16 CN CN201710960331.3A patent/CN109666934A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296149A (en) * | 2019-07-17 | 2019-10-01 | 浙江中达精密部件股份有限公司 | A kind of metal slide component and preparation method thereof |
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Application publication date: 20190423 |