CN106853560A - The method that cold implantation based on laser texturing prepares metal-based self-lubricating coating - Google Patents
The method that cold implantation based on laser texturing prepares metal-based self-lubricating coating Download PDFInfo
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- CN106853560A CN106853560A CN201611087318.3A CN201611087318A CN106853560A CN 106853560 A CN106853560 A CN 106853560A CN 201611087318 A CN201611087318 A CN 201611087318A CN 106853560 A CN106853560 A CN 106853560A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
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Abstract
The present invention relates to a kind of method that cold implantation based on laser texturing prepares metal-based self-lubricating coating, belong to surface micro-fabrication technical field.A kind of method that cold implantation based on laser texturing prepares metal-based self-lubricating coating, comprises the following steps：Prepare laser texturing surface texture：Texturing treatment is carried out to the coating surface of the sample after cladding using pulse optical fiber, microwell array is prepared, laser texturing surface is formed；S2, the coating surface to the sample after texturing are processed；S3, the good powder lubricant of ball milling is filled in the laser texturing surface texture of sample；S4, the sample of populated lubricant is fixed on the workbench of agitating friction soldering equipment, is processed under argon gas protection, complete the preparation of the self-lubricating coat in use of sample.Whole technical process of the invention is simple, easy to automate, efficiency high, with ideal engineer applied meaning.
Description
Technical field
The present invention relates to surface micro-fabrication technical field, more particularly to a kind of cold implantation based on laser texturing prepares metal
The method of base self-lubricating coating.
Background technology
In recent years, with the fast development of science and technology, multiple fields are to instrument, equipment and material including space flight and aviation etc.
Abrasion resistance propose requirement higher, this also accelerate solid lubrication substitute hydrodynamic lubrication paces, self-lubricating coat in use because
The tribological property of the mechanical property and lubrication phase that have coated substrate concurrently receives more and more concerns.But because lubrication is being applied
Skewness can cause unstable coefficient of friction and three-dimensional micro-, nanostructured defect in layer, and these are always self-lubricating
Difficult point prepared by coating.
Laser surface texturing techniques are a kind of most manageable micro asperities Modeling Technologies, and because speed is fast, energy consumption
Low, cleanliness factor is high, the advantages of do not limited by material, it is possible to achieve the controllable microwell array of coating surface regular distribution, size, will
The technology combines with self-lubricating coat in use technology, can be effectively improved the frictionand wear properties of piece surface.And for swashing
The anti-friction Reducing wear of light texture surface, is concentrated mainly on the ratio (aspect ratio) of micro-pore shape, micropore depth and micro-pore diameter
The anti-friction Wear vesistance of friction pair working surface is improved with three aspects of moulding density.
A kind of Chinese patent " self-lubricant anti-friction composite structure surface preparation method based on laser texturing " (application number：
201410341263.9) a kind of self-lubricant anti-friction composite structure surface preparation method based on laser texturing is disclosed, is first used
Picosecond pulse laser carries out Surface Texture, then fills lubricant to texture structure with dielectrophoretic force, and last laser quickly scans system
Standby self-lubricating coat in use.Occur in high-energy high-density laser cladding process lubrication phase reduction, also but lubrication distributed mutually not
So that the self-lubricating property of coating fails to give full play to.
Chinese patent " a kind of titanium alloy surface complex abrasion-proof friction coat and preparation method thereof " (application number：
201410767991.6) a kind of titanium alloy surface complex abrasion-proof friction coat and preparation method thereof is disclosed, laser surface is knitted
Structure technology and plasma electrolysis oxidation technology are combined, and prepare texturing/ceramic composite coating in titanium alloy surface, and apply
Kollag is covered to improve its surface friction property.This technique is easy to add lubricant, but the material coating for preparing is too
Excessively limit to, it is impossible to realize the self-lubricating of material integral surface.
The content of the invention
It is an object of the invention to regarding to the issue above, there is provided a kind of cold implantation based on laser texturing prepares Metal Substrate
The method of self-lubricating coat in use, effectively improves lubrication in coating surface uneven distribution, reduces the friction factor on surface, is carrying
While surface anti-friction high, Wear vesistance, the self-lubricating of material surface is realized, while reducing three-dimensional micro-, nanostructured scarce
Fall into.
The object of the present invention is achieved like this：
A kind of method that cold implantation based on laser texturing prepares metal-based self-lubricating coating, it is characterised in that including with
Lower step：
S1, prepare laser texturing surface texture：The coating surface of the sample after cladding is entered using pulse optical fiber
Row texturing is processed, and prepares microwell array, forms laser texturing surface；
S2, the coating surface to the sample after texturing are processed；
S3, the good powder lubricant of ball milling is filled in the laser texturing surface texture of sample；
S4, the sample of populated lubricant is fixed on the workbench of agitating friction soldering equipment, under argon gas protection
It is processed, completes the preparation of the self-lubricating coat in use of sample.
Wherein, the laser texturing surface in the S1 be by regular hexagon constitute it is cellular, the regular hexagon
The length of side is 1.5mm~2.5mm, and depth 0.5mm~1.5mm, texture density range is 30%~50%.
Wherein, the basic parameter of pulse optical fiber is in the S1：Optical maser wavelength 1064nm, pulse frequency 30~
250kHz, 80~120ns of pulse width, each hole need 15~20 pulses.
Wherein, the treatment in the S2 to coating surface is specifically cleaned using ammoniacal liquor to the coating surface of sample, and
Remove the oxide of the coating surface of sample.
Wherein, the thickness of the powder lubricant filled in the S3 is the laser texturing surface texture depth of the sample
0.9~1.0 times.
Wherein, the technological parameter of the stirring-head in the S4 used by agitating friction soldering equipment is：The shaft shoulder a diameter of 8~
12mm, stirring-head 3~5mm of diameter, 2.5~3.5mm long, mixing speed 50mm/min, rotary speed are 500~750r/min.
Wherein, the case depth of the shaft shoulder pressing in sample of the stirring-head in the S4 used by agitating friction soldering equipment is 0.15
~0.25mm.
Beneficial effects of the present invention are：
1) this method is carried out on metal based coating, is overcome after laser irradiation due to meeting inside molten bath zone
Micro-crack is produced in there is larger thermograde and causing to produce in follow-up rapid solidification stronger thermal stress coating, together
When avoid due to high temperature influence lubrication phase reduction.
2) multiple dimensioned microcellular structure is formed in coating surface with this method, the combination that can improve surface lubrication coating is strong
Degree, by after agitating friction weldering treatment so that lubrication is more uniform in coating distribution, reduces the friction factor on surface, is carrying
While surface anti-friction high, Wear vesistance, the self-lubricating on surface is realized.
3) whole technical process is simple, easy to automate, efficiency high, with ideal engineer applied meaning.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Fig. 2 is the schematic diagram that pulse optical fiber carries out texture to coating.
In Fig. 2：1- pulse optical fibers；2- workpiece；3- laser texturing platforms.
Fig. 3 is schematic cross-section of the sample after laser texturing.
Fig. 4 is schematic surface of the sample after laser texturing.
Fig. 5 is the schematic diagram of the mixing yoghurt coating based on laser texturing
In Fig. 5：1- stirring-heads；The 2- shaft shoulders；3- mixing needles；4- workpiece；5- stationary fixture 6- agitating friction weldering platforms.
Specific embodiment
With reference to specific embodiments and the drawings, the present invention is expanded on further.
Embodiment one：
A kind of method that cold implantation based on laser texturing prepares nickel-based self-lubricating coating, specific preparation process is as follows：
S1, prepare laser texturing surface texture (as shown in Figure 2)：Laser scanning galvanometer is passed through using pulse optical fiber
System of processing carries out texturing treatment to the Ni-based coating surface of the sample after laser melting coating, prepares microwell array, forms laser
Textured surfaces (as shown in Fig. 3 combinations Fig. 4), i.e. ablation or induce artificial rule in cellular surface texture, honeycomb
In the length of side of each regular hexagon be 1.5mm, depth is 0.5mm, and texture density is 30%, in surface-texturing treatment,
The basic parameter of pulse optical fiber is optical maser wavelength 1064nm, pulse frequency 75kHz, pulse width 80ns, and each hole needs
Want 15 pulses；
S2, the coating surface after texturing is processed, the coating surface of the sample after texturing is entered using ammoniacal liquor
Row is cleaned, and removes oxide on surface, is then cleaned with alcohol and acetone, is dried in vacuum drying chamber.
S3,5 microns of good powder BN lubricants of ball milling are placed in the bottle for having driven oxygen, uniformly sample is coated in after drying
On laser texturing surface texture, lubricant coating thickness is 0.9~1.0 times of laser texturing constructional depth.
S4, installation processing sample (as shown in Figure 4)：Sample fixture is fixed on the workbench of agitating friction soldering equipment
On, and set each technological parameter of the stirring-head used by processing：A diameter of 8~the 10mm of the shaft shoulder, stirring-head 3~5mm of diameter,
2.5~3.5mm long, mixing speed 50mm/min, rotary speed is 500r/min.Control the table of the shaft shoulder pressing in sample of stirring-head
Face depth is 0.15~0.25mm, is processed under argon gas protection.
The Ni-based even compact of profit coating structure certainly, flawless, the coating layer thickness 0.5-1.0mm prepared using the method.And
And the coating has good wear-corrosion resistance and relatively low coefficient of friction (0.2), wearability is the 4.7 of matrix under same case
Times, disclosure satisfy that the use requirement under harsh working condition.
Embodiment two：
A kind of method that cold implantation based on laser texturing prepares Co base self-lubricating coatings, specific preparation process is as follows：
S1, prepare laser texturing surface texture：The step of described in S1 using embodiment one, is prepared, and only changes arteries and veins
Wash the parameter of fibre laser off to realize the surface texture of artificial rule, the basic parameter of pulse optical fiber is sharp here
Optical wavelength 1064nm, pulse frequency 100kHz, pulse width 100ns, each hole need 20 pulses, formed in cellular
Surface texture in the regular hexagon length of side be 2.0mm, depth is 1.5mm, and texture density is 30%；
S2, the abrasive material MoS2 powder absolute ethanol washings by ball milling good 5 microns, are subsequently adding silane coupling agent KH-
570, with being inserted after 10: 1 mass ratio uniformly mixing and having driven the bottle of oxygen, logical nitrogen, vacuumize until by the cleared drying of ethanol
Uniformly it is coated on laser texturing surface texture afterwards, lubricant coating thickness is the 0.9~1.0 of the texture structure depth of sample
Times.
The step of described in S3, the S4 using embodiment one, is stirred friction after welding treatment, through the stirring used by change
Each technological parameter of head：A diameter of 8~the 10mm of the shaft shoulder, stirring-head 3~5mm of diameter, 2.5~3.5mm long, mixing speed
100mm/min, rotary speed is 700r/min, and control the case depth of the shaft shoulder pressing in sample of stirring-head for 0.15~
0.25mm, is processed under argon gas protection.
The Co base self-lubricatings composite coating obtained using the method is well combined with matrix, dense structure, coefficient of friction
It is 0.17.
Embodiment three：
A kind of method that cold implantation based on laser texturing prepares Co base self-lubricating coatings, the specific same embodiment of preparation process
Two, the surface texture only in S1 by changing the parameter of pulse optical fiber to realize artificial rule so that sample is knitted
Structure density is 50%.
Compared with case study on implementation two, the coefficient of friction of prepared Co base self-lubricating coatings is 0.14 to embodiment three.
The above embodiments merely illustrate the technical concept and features of the present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention.So every do not take off
The equivalent or modification completed under principles of this disclosure, should all be included within the scope of the present invention.
Claims (7)
1. a kind of method that cold implantation based on laser texturing prepares metal-based self-lubricating coating, it is characterised in that including following
Step：
S1, prepare laser texturing surface texture：The coating surface of the sample after cladding is knitted using pulse optical fiber
Structureization treatment, prepares microwell array, forms laser texturing surface；
S2, the coating surface to the sample after texturing are processed；
S3, the good powder lubricant of ball milling is filled in the laser texturing surface texture of sample；
S4, the sample of populated lubricant is fixed on the workbench of agitating friction soldering equipment, is carried out under argon gas protection
Processing, completes the preparation of the self-lubricating coat in use of sample.
2. the method that a kind of cold implantation based on laser texturing according to claim 1 prepares metal-based self-lubricating coating,
Characterized in that, the laser texturing surface in the S1 is cellular, the side of the regular hexagon being made up of regular hexagon
A length of 1.5mm~2.5mm, depth 0.5mm~1.5mm, texture density range are 30%~50%.
3. the method that a kind of cold implantation based on laser texturing according to claim 1 prepares metal-based self-lubricating coating,
Characterized in that, the basic parameter of pulse optical fiber is in the S1：Optical maser wavelength 1064nm, pulse frequency 30~
250kHz, 80~120ns of pulse width, each hole need 15~20 pulses.
4. the method that a kind of cold implantation based on laser texturing according to claim 1 prepares metal-based self-lubricating coating,
Characterized in that, the treatment in the S2 to coating surface is specifically cleaned using ammoniacal liquor to the coating surface of sample, and go
Except the oxide of the coating surface of sample.
5. the method that a kind of cold implantation based on laser texturing according to claim 1 prepares metal-based self-lubricating coating,
Characterized in that, the thickness of the powder lubricant filled in the S3 is the laser texturing surface texture depth of the sample
0.9~1.0 times.
6. the method that a kind of cold implantation based on laser texturing according to claim 1 prepares metal-based self-lubricating coating,
Characterized in that, the technological parameter of the stirring-head in the S4 used by agitating friction soldering equipment is：A diameter of 8~the 12mm of the shaft shoulder,
Stirring-head 3~5mm of diameter, 2.5~3.5mm long, mixing speed 50mm/min, rotary speed are 500~750r/min.
7. the method that a kind of cold implantation based on laser texturing according to claim 1 prepares metal-based self-lubricating coating,
Characterized in that, the case depth of the shaft shoulder pressing in sample of stirring-head in the S4 used by agitating friction soldering equipment for 0.15~
0.25mm。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108085631A (en) * | 2017-11-14 | 2018-05-29 | 上海交通大学 | A kind of surface treatment method of medical titanium alloy screw |
| CN109338287A (en) * | 2018-08-15 | 2019-02-15 | 南京理工大学 | A kind of texturing Ta/Ag wide warm area self-lubricating coat in use and preparation method thereof |
| CN110668827A (en) * | 2019-11-18 | 2020-01-10 | 西北工业大学 | Method for 3D printing of textured self-lubricating ceramic material |
| CN111570554A (en) * | 2020-04-30 | 2020-08-25 | 江苏大学 | Self-lubricating method for textured coating of gear cold extrusion die |
| CN112342499A (en) * | 2020-11-27 | 2021-02-09 | 中国科学院兰州化学物理研究所 | Method for improving tribological performance of polyimide/high molecular weight polyethylene by surface etching and film-coating metal ion implantation |
| CN112522663A (en) * | 2020-11-05 | 2021-03-19 | 浙江工业大学 | Titanium alloy surface texturing synchronous nitriding process based on scanning galvanometer |
| CN113897577A (en) * | 2021-09-30 | 2022-01-07 | 西南石油大学 | Textured surface of oil and gas equipment and processing method thereof |
| CN114453591A (en) * | 2022-01-18 | 2022-05-10 | 暨南大学 | Metal surface self-lubricating composite coating and preparation method and application thereof |
| CN114908339A (en) * | 2022-04-24 | 2022-08-16 | 中国石油大学(华东) | Preparation method of laser-textured nickel-phosphorus alloy anti-balling composite coating |
| CN115319109A (en) * | 2022-08-12 | 2022-11-11 | 广东省科学院新材料研究所 | Titanium alloy surface self-lubricating composite coating and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108085631B (en) * | 2017-11-14 | 2019-10-08 | 上海交通大学 | A kind of surface treatment method of medical titanium alloy screw |
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| CN110668827A (en) * | 2019-11-18 | 2020-01-10 | 西北工业大学 | Method for 3D printing of textured self-lubricating ceramic material |
| CN111570554A (en) * | 2020-04-30 | 2020-08-25 | 江苏大学 | Self-lubricating method for textured coating of gear cold extrusion die |
| CN111570554B (en) * | 2020-04-30 | 2022-05-20 | 江苏大学 | Self-lubricating method for textured coating of gear cold extrusion die |
| CN112522663A (en) * | 2020-11-05 | 2021-03-19 | 浙江工业大学 | Titanium alloy surface texturing synchronous nitriding process based on scanning galvanometer |
| CN112342499A (en) * | 2020-11-27 | 2021-02-09 | 中国科学院兰州化学物理研究所 | Method for improving tribological performance of polyimide/high molecular weight polyethylene by surface etching and film-coating metal ion implantation |
| CN113897577A (en) * | 2021-09-30 | 2022-01-07 | 西南石油大学 | Textured surface of oil and gas equipment and processing method thereof |
| WO2023050468A1 (en) * | 2021-09-30 | 2023-04-06 | 西南石油大学 | Textured surface for oil and gas equipment and processing method therefor |
| CN114453591A (en) * | 2022-01-18 | 2022-05-10 | 暨南大学 | Metal surface self-lubricating composite coating and preparation method and application thereof |
| CN114908339A (en) * | 2022-04-24 | 2022-08-16 | 中国石油大学(华东) | Preparation method of laser-textured nickel-phosphorus alloy anti-balling composite coating |
| CN115319109A (en) * | 2022-08-12 | 2022-11-11 | 广东省科学院新材料研究所 | Titanium alloy surface self-lubricating composite coating and preparation method and application thereof |
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