CN108411300A - A kind of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating and preparation method thereof - Google Patents
A kind of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating and preparation method thereof Download PDFInfo
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- CN108411300A CN108411300A CN201810346402.5A CN201810346402A CN108411300A CN 108411300 A CN108411300 A CN 108411300A CN 201810346402 A CN201810346402 A CN 201810346402A CN 108411300 A CN108411300 A CN 108411300A
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
Abstract
The invention discloses a kind of Laser Cladding on Titanium Alloy nickel-based self-lubricating coatings and preparation method thereof, including：First titanium alloy surface is pre-processed, the nickel packet molybdenum disulfide preparation raw material of the nickel-base alloy of 45 55wt%, the titanium nitride of 20 30wt%, 20 30wt% is pressed again, after evenly mixing with binder mixing and be preset at titanium alloy surface, nickel-based self-lubricating composite coating is formed after forming binder fore-put powder layer, then laser irradiation powder Melting And Solidification；The nickel-based self-lubricating coating that the present invention obtains has good anti-friction scrape along antifriction lubrication effect, meets the use demand of titanium alloy component under harsh working condition.
Description
Technical field
The invention belongs to Surface Engineering field more particularly to a kind of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating and
Preparation method.
Background technology
Titanium alloy has many advantages, such as that density is low, specific strength is high, corrosion-resistant and good biocompatibility, in aerospace, oil
Chemical industry and biomedical sector are frequently as construction package, but titanium alloy is because its case hardness is low, wearing no resistance limits it using model
It encloses.Its hardness and antiwear and antifriction can be further enhanced using process for modifying surface in the case of holding titanium alloy original advantage
Performance, wherein laser melting coating focus the high feature of energy as a kind of advanced process for modifying surface, using high energy laser beam,
Moment will be completely melt in the preset or powder with laser synchronization of substrate surface, base material part melts simultaneously, be formed a kind of new
Composite material, quickly solidification obtains the fine and close cladding layer with matrix metallurgical binding after laser beam flying, reaches the mesh of surface modification
's.Preparing self-lubricating coat in use around laser melting and coating technique has formed following patent at present：Application No. is 201410363359.5
Chinese patent discloses a kind of self-lubricating abrasion-resistant composite coating and preparation method thereof for titanium alloy surface, which can mitigate
Coating itself and its fretting wear with mating plate, significantly improve the high-temperature wearable service life of titanium alloy, but can not ensure that coating has
There is low-friction coefficient.The Chinese patent of application number 201410680470.7 disclose it is a kind of with laser melting and coating process in titanium alloy table
The method that face in-situ authigenic prepares abrasion-proof self-lubricating composite material coating, titanium carbide and aluminium-titanium carbonate in the coating are original position
It generates, avoids the pollution problem of additional enhancing particle, and enhance the interfacial reaction problem of particle and matrix, but the coating
Reinforced phase is mutually generated in-situ with lubrication, and lubrication is mutually easily influenced by extraneous factor with the ratio of reinforced phase with distribution, coating
Self-lubricating abrasion-resistant performance is unable to fully embody.
It is above-mentioned that self-lubricating wear-resistant coating processing is carried out to titanium alloy surface using laser melting and coating process in the prior art, it is logical
It crosses and matches the problems such as cladding material appropriate overcomes re-melt deposit welding and stomata, but for lubricant grease failure or unlubricated Jie
Under the conditions of matter, it can not ensure that coating has high wearability and low friction coefficient.Therefore self-lubricating composite wood appropriate is found
Material system, the preparation method that titanium alloy surface self-lubricating coating is completed by laser melting and coating process still need to further study, at present
There are no the relevant reports for preparing nickel-based self-lubricating coating in titanium alloy surface using laser melting and coating process.
Invention content
The problem of antiwear and antifriction is realized under lubricant grease failure or unlubricated ambient condition for current titanium alloy and is showed
There is drawbacks described above existing for technology, the present inventor has found a kind of Laser Cladding on Titanium Alloy after numerous studies
Nickel-based self-lubricating coating, using NiCrBSi/TiN/Ni packets MoS2, MoS is prevented using nickel packet molybdenum disulfide2In cladding process
Scaling loss is evaporated to provide sufficient lubrication source, and Ni packets MoS is added by change2Content, choose appropriate laser technical parameters,
The coating flawless of preparation, pore-free, uniform, densification, have self-lubricating function after realizing metallurgical binding with titanium alloy；Simultaneously also
It proposes a kind of preparation method of above-mentioned self-lubricating coat in use, coating layer thickness, energy consumption and at low cost, pollution-free and effect can be accurately controlled
Rate is high.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating specifically includes the following steps：
(1) substrate surface pre-processes：By the polishing roughening treatment of titanium alloy substrate surface, then cleaned with alcohol or acetone,
Natural air drying；
(2) Ni base composite coating precursor material is prepared：According to the nitridation of the nickel-base alloy, 20-30wt% of 45-55wt%
Titanium, 20-30wt% nickel packet molybdenum disulfide preparation raw material after uniformly mix；Wherein, the granularity of the nickel-base alloy is 45-105 μ
M, the granularity of the titanium nitride are 1-3 μm, and the granularity of the nickel packet molybdenum disulfide is 1-3 μm, the nickel packet molybdenum disulfide at
It is divided into the nickel of 75wt% and the molybdenum disulfide of 25wt%；
(3) laser melting coating prepares nickel-based self-lubricating coating：By above-mentioned composite coating precursor raw material and binder according to body
Product is than being 3:1 mixing, and be preset in through step (1) treated titanium alloy surface, form binder fore-put powder layer, preset thickness
Degree is 0.8-1.2mm；Again under inert gas argon gas shielded, using pulse Nd:YAG laser carries out laser and irradiates the bonding
Agent fore-put powder layer forms nickel-based self-lubricating coating after powder Melting And Solidification.
Further, the ingredient of the nickel-base alloy is by mass percentage：B：3.30wt.%, C：0.72wt.%,
Cr：15.10wt.%, Fe：3.77wt.%, Mn：0.01wt.%, Mo：0.02wt.%, Si：4.10wt.%, surplus Ni.
Further, in step (3), the pulse Nd:The mean power of YAG laser is 1450-1600W, scanning speed
Degree is 10-15mm/s, spot diameter 1.5-2.0mm；In some preferred embodiments, the pulse Nd:YAG laser
Mean power be 1500-1550W, sweep speed 12-14mm/s, spot diameter 1.6-1.9mm.
Further, in step (3), the thickness of the nickel-based self-lubricating coating is 0.8-1.2mm；It is preferred real at some
It applies in mode, the thickness of the nickel-based self-lubricating coating is 0.9-1.1mm, the thickness of the further described nickel-based self-lubricating coating
Degree is 1.0mm.
Further, in step (3), the binder is cellulose acetate solvent.
One kind nickel-based self-lubricating coating made from above-mentioned laser melting coating preparation process.
Compared with prior art, the beneficial effects of the present invention are：
One, the present invention is by controlling powder content, the friction coefficient of reduction coating while improving coating hardness,
Enhance the wearability of coating.
Two, the present invention uses NiCrBSi/TiN/Ni packets MoS2, MoS is prevented using nickel packet molybdenum disulfide2In cladding process
Scaling loss, be evaporated to provide sufficient lubrication source, pass through change and Ni packets MoS be added2Content, choose appropriate laser technology ginseng
Number, the nickel-based self-lubricating coating flawless of preparation, pore-free, uniform, densification, good metallurgy is formed with metallic titanium alloy matrix
In conjunction with.
Three, process of the present invention control easy to automate can accurately control coating layer thickness, and low energy consumption, pollution-free, effect
Rate is high, at low cost, has ideal engineering application value.
Description of the drawings
Fig. 1 is that the whole pattern of Ti-6Al-4V Laser Cladding on Titanium Alloy nickel-based self-lubricating coatings in embodiment 1 shines
Piece；
Fig. 2 is the microscopic structure shape of Ti-6Al-4V Laser Cladding on Titanium Alloy nickel-based self-lubricating coatings in embodiment 1
Looks；
Fig. 3 is the microhardness distribution of Ti-6Al-4V Laser Cladding on Titanium Alloy nickel-based self-lubricating coatings；
Fig. 4 is the friction coefficient change curve of nickel-based self-lubricating coating in embodiment 1.
Specific implementation mode
The present pre-ferred embodiments technical solution that the present invention will be described in detail, but the guarantor of the present invention are provided below in conjunction with the accompanying drawings
Shield range is not limited to following embodiments, and experimental method is conventional method unless otherwise specified, and reagent is with material without specified otherwise
It is commercially available.
Embodiment 1
Nd is used on the Ti-6Al-4V titanium alloy sheets surface of 50 (length) × 50 (width) × 5 (thickness) mm:YAG laser carries out
Laser fusion covered nickel base self-lubricating composite coating, preparation method follow the steps below：
1, titanium alloy sheet surface activation process
Polishing roughening treatment is carried out with 120# coarse sandpapers to the titanium alloy sheet surface that thickness is 5mm, removes surface oxide layer
And spot, enhance the combination of titanium alloy surface and nickel-based self-lubricating composite cladding layer, is then cleaned with alcohol or acetone, natural wind
It is dry.
2, Ni base composite coating precursor material and prefabricated cladding powder bed are prepared
Ni base composite coating presoma is prepared by following compositions (mass percent)：The nickel-base alloy of 33.4wt.%,
The titanium nitride of 33.3wt.% and the nickel packet molybdenum disulfide of 33.3wt.%；Wherein, the granularity of nickel-base alloy is 45-105 μm, ingredient
It is by mass percentage：B：3.30wt.%, C：0.72wt.%, Cr：15.10wt.%, Fe：3.77wt.%, Mn：
0.01wt.%, Mo：0.02wt.%, Si：The granularity of 4.10wt.%, surplus Ni, titanium nitride are 1-3 μm, nickel packet molybdenum disulfide
Granularity be 1-3 μm, ingredient be 75wt% nickel and 25wt% molybdenum disulfide.By above-mentioned mixed-powder ball milling in the ball mill
2h is after mixing 3 by volume with binder cellulose acetate organic solvent：1 is mixed into paste or paste, uniformly coats
On the titanium alloy surface after surface preparation, carries out compacting and surface physics is smooth, coating thickness 0.8-1.2mm,
Natural air drying.
3, laser melting coating prepares nickel-based self-lubricating coating
The above-mentioned titanium alloy for preseting nickel-based self-lubricating cladding powder bed is placed on Nd:The CNC machines of YAG laser-processing systems
Laser Cladding Treatment is carried out on bed, laser cladding technological parameter is：Laser power is 1500W, sweep speed 15mm/s, laser
Pulsewidth is 0.5ms, spot size 1.8mm, overlapping rate 40%.After the completion of laser scanning, titanium alloy surface formation flawless,
Imperforate large area laser overlapping cladding layer, cladding layer thickness are 0.9mm, as shown in figure 1 and 2.Rubbed wear test, from profit
The wear rate of sliding coating tapers off trend with the increase of sliding distance, has apparent self-lubricating function.
Embodiment 2
Nd is used on the Ti-6Al-4V titanium alloy sheets surface of 50 (length) × 50 (width) × 5 (thickness) mm:YAG laser carries out
Laser fusion covered nickel base self-lubricating composite coating, preparation method follow the steps below：
1, titanium alloy sheet surface activation process
Polishing roughening treatment is carried out with 120# coarse sandpapers to the titanium alloy sheet surface that thickness is 5mm, removes surface oxide layer
And spot, enhance the combination of titanium alloy surface and nickel-based self-lubricating composite cladding layer, is then cleaned with alcohol or acetone, natural wind
It is dry.
2, Ni base composite coating precursor material and prefabricated cladding powder bed are prepared
Ni base composite coating presoma is prepared by following compositions (mass percent)：The nickel-base alloy of 50wt.%,
The titanium nitride of 25wt.% and the nickel packet molybdenum disulfide of 25wt.%；Wherein, the granularity of nickel-base alloy is 45-105 μm, and ingredient presses matter
Measuring percentages is：B：3.30wt.%, C：0.72wt.%, Cr：15.10wt.%, Fe：3.77wt.%, Mn：0.01wt.%,
Mo：0.02wt.%, Si：The granularity of 4.10wt.%, surplus Ni, titanium nitride are 1-3 μm, and the granularity of nickel packet molybdenum disulfide is 1-
3 μm, ingredient is the molybdenum disulfide of the nickel and 25wt% of 75wt%.By above-mentioned mixed-powder, ball milling 2h, mixing are equal in the ball mill
After even and binder cellulose acetate organic solvent is 3 by volume：1 is mixed into paste or paste, is coated uniformly on through surface
On pretreated titanium alloy surface, carries out compacting and surface physics are smooth, coating thickness 0.8-1.2mm, natural air drying.
3, laser melting coating prepares nickel-based self-lubricating coating
The above-mentioned titanium alloy for preseting nickel-based self-lubricating cladding powder bed is placed on Nd:The CNC machines of YAG laser-processing systems
Laser Cladding Treatment is carried out on bed, laser cladding technological parameter is：Laser power is 1500W, sweep speed 15mm/s, laser
Pulsewidth is 0.5ms, spot size 1.8mm, overlapping rate 40%.After the completion of laser scanning, titanium alloy surface formation flawless,
Imperforate large area laser overlapping cladding layer, cladding layer thickness are 1.1mm.Rubbed wear test, the wear rate of self-lubricating coat in use
As the increase of sliding distance tapers off trend, there is apparent self-lubricating function.
Embodiment 3
Nd is used on the Ti-6Al-4V titanium alloy sheets surface of 50 (length) × 50 (width) × 5 (thickness) mm:YAG laser carries out
Laser fusion covered nickel base self-lubricating composite coating, preparation method follow the steps below：
1, titanium alloy sheet surface activation process
Polishing roughening treatment is carried out with 120# coarse sandpapers to the titanium alloy sheet surface that thickness is 5mm, removes surface oxide layer
And spot, enhance the combination of titanium alloy surface and nickel-based self-lubricating composite cladding layer, is then cleaned with alcohol or acetone, natural wind
It is dry.
2, Ni base composite coating precursor material and prefabricated cladding powder bed are prepared
Ni base composite coating presoma is prepared by following compositions (mass percent)：The nickel-base alloy of 50wt.%,
The titanium nitride of 20wt.% and the nickel packet molybdenum disulfide of 30wt.%；Wherein, the granularity of nickel-base alloy is 45-105 μm, and ingredient presses matter
Measuring percentages is：B：3.30wt.%, C：0.72wt.%, Cr：15.10wt.%, Fe：3.77wt.%, Mn：0.01wt.%,
Mo：0.02wt.%, Si：The granularity of 4.10wt.%, surplus Ni, titanium nitride are 1-3 μm, and the granularity of nickel packet molybdenum disulfide is 1-
3 μm, ingredient is the molybdenum disulfide of the nickel and 25wt% of 75wt%.By above-mentioned mixed-powder, ball milling 2h, mixing are equal in the ball mill
After even and binder cellulose acetate organic solvent is 3 by volume：1 is mixed into paste or paste, is coated uniformly on through surface
On pretreated titanium alloy surface, carries out compacting and surface physics are smooth, coating thickness 0.8-1.2mm, natural air drying.
3, laser melting coating prepares nickel-based self-lubricating coating
The above-mentioned titanium alloy for preseting nickel-based self-lubricating cladding powder bed is placed on Nd:The CNC machines of YAG laser-processing systems
Laser Cladding Treatment is carried out on bed, laser cladding technological parameter is：Laser power is 1450W, sweep speed 10mm/s, laser
Pulsewidth is 0.5ms, spot size 1.5mm, overlapping rate 40%.After the completion of laser scanning, titanium alloy surface formation flawless,
Imperforate large area laser overlapping cladding layer, cladding layer thickness are 1.0mm.Rubbed wear test, the wear rate of self-lubricating coat in use
As the increase of sliding distance tapers off trend, there is apparent self-lubricating function.
Embodiment 4
Nd is used on the Ti-6Al-4V titanium alloy sheets surface of 50 (length) × 50 (width) × 5 (thickness) mm:YAG laser carries out
Laser fusion covered nickel base self-lubricating composite coating, preparation method follow the steps below：
1, titanium alloy sheet surface activation process
Polishing roughening treatment is carried out with 120# coarse sandpapers to the titanium alloy sheet surface that thickness is 5mm, removes surface oxide layer
And spot, enhance the combination of titanium alloy surface and nickel-based self-lubricating composite cladding layer, is then cleaned with alcohol or acetone, natural wind
It is dry.
2, Ni base composite coating precursor material and prefabricated cladding powder bed are prepared
Ni base composite coating presoma is prepared by following compositions (mass percent)：The nickel-base alloy of 50wt.%,
The titanium nitride of 30wt.% and the nickel packet molybdenum disulfide of 20wt.%；Wherein, the granularity of nickel-base alloy is 45-105 μm, and ingredient presses matter
Measuring percentages is：B：3.30wt.%, C：0.72wt.%, Cr：15.10wt.%, Fe：3.77wt.%, Mn：0.01wt.%,
Mo：0.02wt.%, Si：The granularity of 4.10wt.%, surplus Ni, titanium nitride are 1-3 μm, and the granularity of nickel packet molybdenum disulfide is 1-
3 μm, ingredient is the molybdenum disulfide of the nickel and 25wt% of 75wt%.By above-mentioned mixed-powder, ball milling 2h, mixing are equal in the ball mill
After even and binder cellulose acetate organic solvent is 3 by volume：1 is mixed into paste or paste, is coated uniformly on through surface
On pretreated titanium alloy surface, carries out compacting and surface physics are smooth, coating thickness 0.8-1.2mm, natural air drying.
3, laser melting coating prepares nickel-based self-lubricating coating
The above-mentioned titanium alloy for preseting nickel-based self-lubricating cladding powder bed is placed on Nd:The CNC machines of YAG laser-processing systems
Laser Cladding Treatment is carried out on bed, laser cladding technological parameter is：Laser power is 1600W, sweep speed 12mm/s, laser
Pulsewidth is 0.5ms, spot size 2.0mm, overlapping rate 40%.After the completion of laser scanning, titanium alloy surface formation flawless,
Imperforate large area laser overlapping cladding layer, cladding layer thickness are 0.8mm.Rubbed wear test, the wear rate of self-lubricating coat in use
As the increase of sliding distance tapers off trend, there is apparent self-lubricating function.
Embodiment 5
Nd is used on the Ti-6Al-4V titanium alloy sheets surface of 50 (length) × 50 (width) × 5 (thickness) mm:YAG laser carries out
Laser fusion covered nickel base self-lubricating composite coating, preparation method follow the steps below：
1, titanium alloy sheet surface activation process
Polishing roughening treatment is carried out with 120# coarse sandpapers to the titanium alloy sheet surface that thickness is 5mm, removes surface oxide layer
And spot, enhance the combination of titanium alloy surface and nickel-based self-lubricating composite cladding layer, is then cleaned with alcohol or acetone, natural wind
It is dry.
2, Ni base composite coating precursor material and prefabricated cladding powder bed are prepared
Ni base composite coating presoma is prepared by following compositions (mass percent)：The nickel-base alloy of 45wt.%,
The titanium nitride of 25wt.% and the nickel packet molybdenum disulfide of 30wt.%；Wherein, the granularity of nickel-base alloy is 45-105 μm, and ingredient presses matter
Measuring percentages is：B：3.30wt.%, C：0.72wt.%, Cr：15.10wt.%, Fe：3.77wt.%, Mn：0.01wt.%,
Mo：0.02wt.%, Si：The granularity of 4.10wt.%, surplus Ni, titanium nitride are 1-3 μm, and the granularity of nickel packet molybdenum disulfide is 1-
3 μm, ingredient is the molybdenum disulfide of the nickel and 25wt% of 75wt%.By above-mentioned mixed-powder, ball milling 2h, mixing are equal in the ball mill
After even and binder cellulose acetate organic solvent is 3 by volume：1 is mixed into paste or paste, is coated uniformly on through surface
On pretreated titanium alloy surface, carries out compacting and surface physics are smooth, coating thickness 0.8-1.2mm, natural air drying.
3, laser melting coating prepares nickel-based self-lubricating coating
The above-mentioned titanium alloy for preseting nickel-based self-lubricating cladding powder bed is placed on Nd:The CNC machines of YAG laser-processing systems
Laser Cladding Treatment is carried out on bed, laser cladding technological parameter is：Laser power is 1550W, sweep speed 14mm/s, laser
Pulsewidth is 0.5ms, spot size 1.6mm, overlapping rate 40%.After the completion of laser scanning, titanium alloy surface formation flawless,
Imperforate large area laser overlapping cladding layer, cladding layer thickness are 1.2mm.Rubbed wear test, the wear rate of self-lubricating coat in use
As the increase of sliding distance tapers off trend, there is apparent self-lubricating function.
The whole pattern of Ti-6Al-4V Laser Cladding on Titanium Alloy nickel-based self-lubricating coating and micro- in the present embodiment 1
Tissue topography is as shown in figure 1 and 2, it can be seen that nickel-based self-lubricating coating flawless, pore-free, uniform, densification, with Metal Substrate
Body forms good metallurgical binding.
The microhardness distribution of Ti-6Al-4V Laser Cladding on Titanium Alloy nickel-based self-lubricating coating is such as in the present embodiment 1
Shown in attached drawing 3, about 1098.0HV0.3, pure nickel based alloy cladding layer microhardness is about 838.7HV0.3, the conjunction of Ti-6Al-4V titaniums
Golden microhardness is about 370HV0.3；Rubbed wear test self-lubricating coat in use friction coefficient is in trend is substantially reduced, such as attached drawing 4
It is shown.
The above is presently preferred embodiments of the present invention, but the present invention should not be limited to disclosed in the embodiment
Content.So every do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, the model that the present invention protects is both fallen within
It encloses.
Claims (9)
1. a kind of preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating, which is characterized in that include the following steps：
(1) substrate surface pre-processes：By the polishing roughening treatment of titanium alloy substrate surface, then cleaned with alcohol or acetone, it is natural
It air-dries；
(2) Ni base composite coating precursor material is prepared：By the nickel-base alloy of 45-55wt%, the titanium nitride of 20-30wt%, 20-
It is uniformly mixed after the nickel packet molybdenum disulfide preparation raw material of 30wt%；
Wherein, the granularity of the nickel-base alloy is 45-105 μm, and the granularity of the titanium nitride is 1-3 μm, the nickel packet curing
The granularity of molybdenum is 1-3 μm, and the ingredient of the nickel packet molybdenum disulfide is the molybdenum disulfide of the nickel and 25wt% of 75wt%；
(3) laser melting coating prepares nickel-based self-lubricating coating：By Ni base composite coating precursor material and bonding in above-mentioned steps (2)
Agent is 3 by volume:1 mixing, and be preset in and form fore-put powder layer, preset thickness through step (1) treated titanium alloy surface
Degree is 0.8-1.2mm；Again under inert gas argon gas shielded, using pulse Nd:It is described preset that YAG laser carries out laser irradiation
Powder bed；Nickel-based self-lubricating coating is formed after powder Melting And Solidification.
2. the preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating as described in claim 1, which is characterized in that institute
The ingredient for stating nickel-base alloy is by mass percentage：B：3.30wt.%, C：0.72wt.%, Cr：15.10wt.%, Fe：
3.77wt.%, Mn：0.01wt.%, Mo：0.02wt.%, Si：4.10wt.%, surplus Ni.
3. the preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating as described in claim 1, which is characterized in that step
Suddenly in (3), the pulse Nd:The mean power of YAG laser is 1450-1600W, sweep speed 10-15mm/s, and hot spot is straight
Diameter is 1.5-2.0mm.
4. the preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating as claimed in claim 3, which is characterized in that step
Suddenly in (3), the pulse Nd:The mean power of YAG laser is 1500-1550W, sweep speed 12-14mm/s, and hot spot is straight
Diameter is 1.6-1.9mm.
5. the preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating as described in claim 1, which is characterized in that step
Suddenly in (3), the thickness of the nickel-based self-lubricating coating is 0.8-1.2mm.
6. the preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating as claimed in claim 5, which is characterized in that step
Suddenly in (3), the thickness of nickel-based self-lubricating coating is 0.9-1.1mm.
7. the preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating as claimed in claim 6, which is characterized in that step
Suddenly in (3), the thickness of the nickel-based self-lubricating coating is 1.0mm.
8. the preparation method of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating as described in claim 1, which is characterized in that step
Suddenly in (3), the binder is cellulose acetate organic solvent.
9. a kind of Laser Cladding on Titanium Alloy nickel-based self-lubricating coating, which is characterized in that by any one of the claims 1-8
The preparation method of the nickel-based self-lubricating coating is made.
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| CN112030037A (en) * | 2020-08-07 | 2020-12-04 | 南京航空航天大学 | Wear-resistant gradient interface complex-phase reinforced titanium alloy material and preparation method thereof |
| CN112144056A (en) * | 2020-08-28 | 2020-12-29 | 西安交通大学 | Nickel-based composite coating applied to austenitic stainless steel and preparation method thereof |
| CN114231970A (en) * | 2021-12-02 | 2022-03-25 | 中原工学院 | Wide-temperature-range self-lubricating composite coating and preparation process thereof |
| CN114250466A (en) * | 2022-03-01 | 2022-03-29 | 潍坊学院 | Preparation method of laser cladding coating on titanium alloy surface |
| CN114411013A (en) * | 2021-11-22 | 2022-04-29 | 北京科技大学 | Self-lubricating wear-resistant titanium-based composite material part and preparation method thereof |
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| CN109183027A (en) * | 2018-10-26 | 2019-01-11 | 江苏理工学院 | A kind of self-lubricating solid wear-resistant corrosion-resistant composite coating and preparation method thereof |
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| CN112144056A (en) * | 2020-08-28 | 2020-12-29 | 西安交通大学 | Nickel-based composite coating applied to austenitic stainless steel and preparation method thereof |
| CN112144056B (en) * | 2020-08-28 | 2021-12-28 | 西安交通大学 | Nickel-based composite coating applied to austenitic stainless steel and preparation method thereof |
| CN114411013A (en) * | 2021-11-22 | 2022-04-29 | 北京科技大学 | Self-lubricating wear-resistant titanium-based composite material part and preparation method thereof |
| CN114231970A (en) * | 2021-12-02 | 2022-03-25 | 中原工学院 | Wide-temperature-range self-lubricating composite coating and preparation process thereof |
| CN114250466A (en) * | 2022-03-01 | 2022-03-29 | 潍坊学院 | Preparation method of laser cladding coating on titanium alloy surface |
| CN114250466B (en) * | 2022-03-01 | 2022-05-03 | 潍坊学院 | Preparation method of laser cladding coating on titanium alloy surface |
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Application publication date: 20180817 |