CN108774729A - Duplex coating single pass forming method based on laser melting and coating technique - Google Patents
Duplex coating single pass forming method based on laser melting and coating technique Download PDFInfo
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- CN108774729A CN108774729A CN201810693625.9A CN201810693625A CN108774729A CN 108774729 A CN108774729 A CN 108774729A CN 201810693625 A CN201810693625 A CN 201810693625A CN 108774729 A CN108774729 A CN 108774729A
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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
- 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
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/5806—Thermal treatment
- C23C14/5813—Thermal treatment using lasers
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a kind of duplex coating single pass forming method based on laser melting and coating technique, the preset double-deck fore-put powder is scanned using laser melting and coating technique, the high temperature of laser causes the Melting And Solidification molding simultaneously of the double-deck fore-put powder, the defects of coating surface flawless manufactured using the method, uniform coating thickness, it is efficient, yieldization can be achieved, microcellular structure ceramic coating can be achieved, improve the wear-resisting property of piece surface, enhance piece surface hardness, is widely used in the fields such as space flight and aviation, metallurgy, chemical industry.
Description
Technical field
The invention belongs to process for modifying surface field more particularly to a kind of duplex coating based on laser melting and coating technique are primary
Scanning moulding method.
Background technology
Process for modifying surface (Surface Modified Technique) is to change material using the method for chemistry, physics
The chemical composition or institutional framework of material or workpiece surface are to improve a kind of heat treatment technics of machine parts or material property.It is wrapped
Include thermo-chemical treatment (nitriding, carburizing, metallic cementation etc.)；Face coat (low-voltage plasma spraying, low-tension arc spraying, laser weight
Melt compound equal thin film coatings, physical vapour deposition (PVD), chemical vapor deposition etc.) and nonmetallic coating technology etc..These are strengthening
It is each to assign part high temperature resistant, anticorrosion, wear-resistant, antifatigue, radiation protection, conduction, magnetic conduction etc. for the technology of part or material surface
Kind new characteristic, makes the part to work under high speed, high temperature, high pressure, heavy duty, corrosive medium environment originally, improve reliability,
Service life is extended, is had a great economic significance and promotional value.
Laser melting and coating technique increasingly shows its advantage in process for modifying surface, laser melting coating be using high energy beam as
Heat source is in material surface cladding layer of material, to keep material surface formation different from substrate material ingredient, tissue and performance
Surface fused coating.Compared with the methods of common coating and thermo-chemical treatment, laser melting coating have heat affected area is small, heat input is low,
The advantages that thermal deformation is small.Often application is based on metal powder material for laser melting and coating technique, compared with metal material, ceramic material tool
Some more superior performances, such as hardness height, high temperature resistant and good corrosive nature.In theory, ceramic material and metal
Material is difficult to combine, but with the appearance of nanometer grade powder, tiny ceramic particle under the action of high energy density laser,
Make it possible ceramic material cladding in metallic matrix.Laser melting coating ceramic coating can be by the higher toughness of metal material and good
The good craftsmanship wearability excellent with the material of ceramics, corrosion resistance organically combine.
At present the country have three about duplex coating novel preparation method, the patent of invention of Patent No. CN102677126B,
Propose a kind of preparation method of magnesium-based surface compact magnesia/hydroxyapatite nanofiber duplex coating, main technique
It is to prepare phosphorous and calcium porous magnesia coating in magnesium or Mg alloy surface using differential arc oxidization technique, then specific water again
Water process is carried out to porous magnesia coating under thermal environment and then obtains magnesia/hydroxyapatite nanofiber duplex coating.
The patent of invention of Patent No. CN105925939B is a kind of preparation process of TiOx nano duplex coating air cylinder sleeve of engine,
The double-deck titania coating is prepared in cylinder liner surface using the method for plated film, coating prepared by the method is mechanical bond with matrix,
Bond strength is relatively low.The patent of invention of CN103746128B is that a kind of high-temperature solid oxide battery metal connector surface is double-deck
Coating production, first layer use electroplating deposition method prepares coating, the second layer to use coating prepared by chemical deposition, this
Two methods are the method for traditional prepares coating, and bond strength is relatively low.
Invention content
Goal of the invention：In view of the above problems, the present invention proposes that a kind of duplex coating based on laser melting and coating technique is once swept
Forming method is retouched, the preset double-deck fore-put powder is scanned using laser melting and coating technique, the high temperature of laser causes bilayer preset
The defects of powder Melting And Solidification molding simultaneously, the coating surface flawless manufactured using the method, uniform coating thickness.
Technical solution：To achieve the purpose of the present invention, the technical solution adopted in the present invention is：One kind being based on laser melting coating
The duplex coating single pass forming method of technology, including step：
(1) metal hollow powder is prepared；
(2) ceramic powders are prepared；
(3) use electromagnetism deposition technique in the preset micropore metal powder coating of matrix surface；
(4) then the preset ceramic powder coating of electromagnetism deposition technique is used on its surface；
(5) preset coating that laser melting and coating technique prepares electromagnetism deposition is used to carry out laser scanning, prepared by one-pass molding
Duplex coating.
Further, specifically, the metal hollow powder of preparation is placed in rotatably mixed powder equipment to be subject to the step (1)
Mixing；After the powder prepared is sieved through with sieve, it is stored in dry tank body.
Further, the step (1), metal hollow dusty material are 316 stainless steel metals.
Further, the step (2) specifically, prepares ceramic powders, heat treatment temperature is using spray drying process
It 1000-1200 DEG C, soaking time 2-3h, after the powder after different temperatures is heat-treated is sieved through with sieve, is stored in dry
In tank body.
Further, the step (2), ceramic powders are nanometer aggregate ceramic powders.
Further, in the step (3) and (4), micropore metal powder coating is mechanical bond, ceramic powders with matrix
Coating and micropore metal powder coating are also mechanical bond.
Further, in the step (3) and (4), electromagnetism deposition technique carries out under vacuum.
Further, in the step (5), ceramic coating and micropore metal coating, micropore metal coating and base after scanning
It is metallurgical binding between body coating.
Further, in the step (3) and (4), micro porous coating electromagnetism deposition process parameters be sputtering power be 3~
4KW, pulsed bias are -140V~-130V, and duty ratio is 45%~55%, and nitrogen partial pressure is strong by 30%~40%, and operating air pressure is
0.28~0.32Pa；Ceramic coating electromagnetism deposition parameter is that sputtering power is 4~5KW, and pulsed bias is -150~-140V, is accounted for
For sky than being 45%~50%, nitrogen partial pressure is strong by 45%~50%, and operating air pressure is 0.45~0.5Pa.
Further, in the step (5), laser cladding technological parameter is that laser power is 1000W~2000W, scanning
Speed is 0.05~0.10m/s, spot diameter 2mm, sweep span 1mm.
Advantageous effect：The present invention is molded using laser melting and coating technique single pass, and efficiency is higher；Microcellular structure can be reduced
The residual stress of ceramic coating enhances the bond strength of ceramic coating and matrix.Yield can be achieved, it can be achieved that preparing in the present invention
Microcellular structure ceramic coating improves the wear-resisting property of piece surface, enhances piece surface hardness, is widely used in space flight boat
The fields such as sky, metallurgy, chemical industry.
Description of the drawings
Fig. 1 is coating structure schematic diagram；
Fig. 2 is the formation mechenism figure of the double coatings of single pass molding；
Fig. 3 is the microcosmic microstructure shape appearance figure of coating.
Specific implementation mode
Technical scheme of the present invention is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, the duplex coating single pass forming method of the present invention based on laser melting and coating technique, uses
Laser melting and coating technique is scanned the preset double-deck fore-put powder, and the high temperature of laser causes double-deck fore-put powder Melting And Solidification simultaneously
The defects of molding, the coating surface flawless manufactured using the method, uniform coating thickness includes the following steps：
(1) metal hollow powder is prepared, metal hollow powder and pore creating material are placed in rotatably mixed powder equipment and mixed
It closes；Using high-purity argon gas as protective atmosphere to prevent block in mechanical milling process；The powder prepared is successively with 200 mesh and 300 mesh
Sieve be sieved through after, be stored in dry tank body；
Metal hollow dusty material can be 316 stainless steel metals, and finally obtained powder size is 25 μm -125 μm.
(2) use spray drying process prepare nanometer aggregate ceramic powders, heat treatment temperature between 1000-1200 DEG C,
Soaking time is 2-3h, the powder after different temperatures is heat-treated, and after being successively sieved through with the sieve of 200 mesh and 300 mesh, is stored in
In dry tank body；
Nanometer aggregate powder of AI/Yt can select producer for Framat companies of the U.S., and powder particle size is 40 μm -100 μm.
(3) use electromagnetism deposition technique in the preset micropore metal powder coating of matrix surface, micro porous coating electromagnetism deposits work
Skill parameter is that sputtering power is 4KW, and pulsed bias is -140V, duty ratio 45%, the strong 30%-40% of nitrogen partial pressure, work gas
Pressure is 0.32Pa；
Electromagnetism deposition technique is r. f. magnetron sputtering technology, this technology is carried out under conditions of vacuum, and it is heavy to ensure
Coating non-oxidation phenomenon after product is further ensured that in laser cladding process that the impurity such as oxide-free immerse, and coating free from admixture is split
The defects of line.
(4) it is to splash then to use the preset ceramic powder coating of this technology, the electromagnetism deposition parameter of ceramic coating on its surface
It is 5KW to penetrate power, and pulsed bias is -150V, and duty ratio 50%, the strong 45%-50% of nitrogen partial pressure, operating air pressure is
0.45Pa；
Micropore metal powder coating is mechanical bond with matrix, then in the ceramic powder coating on its surface, with micropore
Metal-powder coating is also mechanical bond.
(5) as shown in Fig. 2, depositing the preset coating progress laser scanning of preparation to electromagnetism using laser melting and coating technique, one
Secondary molding prepares duplex coating；Laser cladding technological parameter is that laser power is 1000W-2000W, sweep speed 0.05-
0.10m/s, spot diameter 2mm, sweep span 1mm.
Using laser melting and coating technique to electromagnetism deposition prepare preset coating carry out laser scanning, after scanning ceramic coating with
It is metallurgical binding between micropore metal coating, micropore metal coating and basal body coating layer.
As shown in figure 3, since ceramic fusing point is higher, micropore metal fusing point is relatively low, and when laser irradiation ceramics, ceramics are also not
Before fusing, the energy for passing to micropore metal is enough to bring it about Melting And Solidification, when ceramic methods Melting And Solidification is molded, micropore
Coating has prepared completion.It is micro- although micro porous coating and ceramic coating are formed substantially simultaneously during preparing duplex coating
Melting And Solidification first occurs for mesoporous metal, and micropore has absent-mindedness effect to ceramic coating, it is possible to reduce in ceramic coating process of setting
The generation of the defects of residual stress, Crack prevention.
Embodiment 1
316 stainless steel metal hollow powders of metal are prepared first, and powder of stainless steel, which is placed in rotatably mixed powder equipment, to be subject to
Mixing, rotary speed 130r/min, time 30min；Using high-purity argon gas as protective atmosphere to prevent block in mechanical milling process
Change.After the powder prepared is successively sieved through with the sieve of 200 mesh and 300 mesh, it is stored in dry tank body.Then using spraying
Seasoning prepare nanometer aggregate ceramic powders, heat treatment temperature 1000 DEG C it, soaking time 2.3h, by different temperatures heat
Treated, and powder is stored in after being successively sieved through with the sieve of 200 mesh and 300 mesh in dry tank body.Then heavy using electromagnetism
Product technology then uses the preset ceramic powder coating of this technology in the preset micropore metal powder coating of matrix surface on its surface,
Micro porous coating electromagnetism deposition process parameters are that sputtering power is 4KW, and pulsed bias is -140V, duty ratio 45%, nitrogen partial pressure
It is strong by 30%%, operating air pressure 0.32Pa.It is 5KW that the electromagnetism deposition parameter of ceramic coating, which is sputtering power, pulsed bias is-
150V, duty ratio 50%, nitrogen partial pressure is strong by 45%, operating air pressure 0.45Pa.Then use laser melting and coating technique to electromagnetism
Preset coating prepared by deposition carries out laser scanning, and one-pass molding prepares duplex coating.Laser cladding technological parameter is laser work(
Rate is 1000W, sweep speed 0.05m/s, spot diameter 2mm, sweep span 1mm.The coating pore-free of preparation, is split impurity
The defects of line, meets technological requirement.
Embodiment 2
316 stainless steel metal hollow powders of metal are prepared first, and powder of stainless steel, which is placed in rotatably mixed powder equipment, to be subject to
Mixing, rotary speed 130r/min, time 30min；Using high-purity argon gas as protective atmosphere to prevent block in mechanical milling process
Change.After the powder prepared is successively sieved through with the sieve of 200 mesh and 300 mesh, it is stored in dry tank body.Then using spraying
Seasoning prepares nanometer aggregate ceramic powders, and heat treatment temperature is between 1100 DEG C, soaking time 2.3h, by different temperatures
Powder after heat treatment is stored in after being successively sieved through with the sieve of 200 mesh and 300 mesh in dry tank body.Then electromagnetism is used
Deposition technique is then applied on its surface using the preset ceramic powders of this technology in the preset micropore metal powder coating of matrix surface
Layer, micro porous coating electromagnetism deposition process parameters are that sputtering power is 4KW, and pulsed bias is -140V, duty ratio 45%, nitrogen
Partial pressure 35%, operating air pressure 0.32Pa.It is 5KW that the electromagnetism deposition parameter of ceramic coating, which is sputtering power, pulsed bias is-
150V, duty ratio 50%, nitrogen partial pressure is strong by 47%, operating air pressure 0.45Pa.Then use laser melting and coating technique to electromagnetism
Preset coating prepared by deposition carries out laser scanning, and one-pass molding prepares duplex coating.Laser cladding technological parameter is laser work(
Rate is 1500W, sweep speed 0.07m/s, spot diameter 2mm, sweep span 1mm.The coating pore-free of preparation, is split impurity
The defects of line, meets technological requirement.
Embodiment 3
316 stainless steel metal hollow powders of metal are prepared first, and powder of stainless steel, which is placed in rotatably mixed powder equipment, to be subject to
Mixing, rotary speed 130r/min, time 30min；Using high-purity argon gas as protective atmosphere to prevent block in mechanical milling process
Change.After the powder prepared is successively sieved through with the sieve of 200 mesh and 300 mesh, it is stored in dry tank body.Then using spraying
Seasoning prepares nanometer aggregate ceramic powders, and heat treatment temperature is between 1200 DEG C, soaking time 2.3h, by different temperatures
Powder after heat treatment is stored in after being successively sieved through with the sieve of 200 mesh and 300 mesh in dry tank body.Then electromagnetism is used
Deposition technique is then applied on its surface using the preset ceramic powders of this technology in the preset micropore metal powder coating of matrix surface
Layer, micro porous coating electromagnetism deposition process parameters are that sputtering power is 4KW, and pulsed bias is -140V, duty ratio 45%, nitrogen
Partial pressure 40%, operating air pressure 0.32Pa.It is 5KW that the electromagnetism deposition parameter of ceramic coating, which is sputtering power, pulsed bias is-
150V, duty ratio 50%, nitrogen partial pressure is strong by 50%, operating air pressure 0.45Pa.Then use laser melting and coating technique to electromagnetism
Preset coating prepared by deposition carries out laser scanning, and one-pass molding prepares duplex coating.Laser cladding technological parameter is laser work(
Rate is 2000W, sweep speed 0.10m/s, spot diameter 2mm, sweep span 1mm.The coating pore-free of preparation, is split impurity
The defects of line, meets technological requirement.
Claims (10)
1. a kind of duplex coating single pass forming method based on laser melting and coating technique, it is characterised in that：Including step：
(1) micropore metal powder is prepared；
(2) ceramic powders are prepared；
(3) use electromagnetism deposition technique in the preset micropore metal powder coating of matrix surface；
(4) then the preset ceramic powder coating of electromagnetism deposition technique is used on its surface；
(5) preset coating that laser melting and coating technique prepares electromagnetism deposition is used to carry out laser scanning, one-pass molding prepares double-deck
Coating.
2. the duplex coating single pass forming method according to claim 1 based on laser melting and coating technique, feature exist
In：The step (1) specifically, metal hollow powder and pore creating material is placed in rotatably mixed powder equipment and mixed；It prepares
After good powder is sieved through with sieve, it is stored in dry tank body.
3. the duplex coating single pass forming method according to claim 2 based on laser melting and coating technique, feature exist
In：The step (1), metal hollow dusty material are 316 stainless steel metals.
4. the duplex coating single pass forming method according to claim 1 based on laser melting and coating technique, feature exist
In：The step (2) specifically, using spray drying process prepares ceramic powders, and heat treatment temperature is 1000-1200 DEG C, heat preservation
Time is 2-3h, after the powder after different temperatures is heat-treated is sieved through with sieve, is stored in dry tank body.
5. the duplex coating single pass forming method according to claim 1 based on laser melting and coating technique, feature exist
In：The step (2), ceramic powders are nanometer aggregate ceramic powders.
6. the duplex coating single pass forming method according to claim 1 based on laser melting and coating technique, feature exist
In：In the step (3) and (4), micropore metal powder coating is mechanical bond, ceramic powder coating and micropore metal with matrix
Powder coating is also mechanical bond.
7. the duplex coating single pass forming method according to claim 1 based on laser melting and coating technique, feature exist
In：In the step (3) and (4), electromagnetism deposition technique carries out under vacuum.
8. the duplex coating single pass forming method according to claim 1 based on laser melting and coating technique, feature exist
In：In the step (5), after scanning between ceramic coating and micropore metal coating, micropore metal coating and basal body coating layer be smelting
Gold combines.
9. the duplex coating single pass forming method according to claim 1 based on laser melting and coating technique, feature exist
In：In the step (3) and (4), it is 3~4KW that micro porous coating electromagnetism deposition process parameters, which are sputtering power, pulsed bias is-
140V~-130V, duty ratio are 45%~55%, and nitrogen partial pressure is strong by 30%~40%, and operating air pressure is 0.28~0.32Pa；
Ceramic coating electromagnetism deposition parameter is that sputtering power is 4~5KW, and pulsed bias is -150~-140V, duty ratio 45%
~50%, nitrogen partial pressure is strong by 45%~50%, and operating air pressure is 0.45~0.5Pa.
10. the duplex coating single pass forming method according to claim 1 based on laser melting and coating technique, feature exist
In：In the step (5), it is 1000W~2000W that laser cladding technological parameter, which is laser power, sweep speed is 0.05~
0.10m/s, spot diameter 2mm, sweep span 1mm.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748404A (en) * | 2010-01-08 | 2010-06-23 | 南京航空航天大学 | Coating structure with micropore transition layer and preparation method thereof |
| CN104046954A (en) * | 2014-06-13 | 2014-09-17 | 中国科学院金属研究所 | Method for improving liquid metal corrosion resistance of martensitic heat-resistant steel |
| JP2015200021A (en) * | 2014-03-31 | 2015-11-12 | オイレス工業株式会社 | Method for manufacturing metal base material having ground layer for double layer bearing, method for manufacturing double layer bearing, metal base material having ground layer for double layer bearing, and double layer bearing |
| CN107012463A (en) * | 2017-05-25 | 2017-08-04 | 山东大学 | A kind of alumina modified gradient laser cladding layer and preparation method thereof |
-
2018
- 2018-06-29 CN CN201810693625.9A patent/CN108774729A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748404A (en) * | 2010-01-08 | 2010-06-23 | 南京航空航天大学 | Coating structure with micropore transition layer and preparation method thereof |
| JP2015200021A (en) * | 2014-03-31 | 2015-11-12 | オイレス工業株式会社 | Method for manufacturing metal base material having ground layer for double layer bearing, method for manufacturing double layer bearing, metal base material having ground layer for double layer bearing, and double layer bearing |
| CN104046954A (en) * | 2014-06-13 | 2014-09-17 | 中国科学院金属研究所 | Method for improving liquid metal corrosion resistance of martensitic heat-resistant steel |
| CN107012463A (en) * | 2017-05-25 | 2017-08-04 | 山东大学 | A kind of alumina modified gradient laser cladding layer and preparation method thereof |
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