CN108220957A - A kind of titanium alloy surface high-temperaure coating and preparation method thereof - Google Patents
A kind of titanium alloy surface high-temperaure coating and preparation method thereof Download PDFInfo
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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
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- 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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Abstract
The present invention relates to a kind of titanium alloy surface high-temperaure coating and preparation method thereof, the component system of the original raw material of the coating is：(45~75)%Al‑(10‑20)%Nb‑(5‑20)%Si‑(0~15)%B‑(0~20)%B4C (0 ~ 10) %C, the present invention is by the way of laser surface alloying, it is in typical metallurgical binding to prepare generated in-situ high-temperaure coating with matrix in titanium alloy surface, this coating not only has excellent resistance to high temperature oxidation, polishing machine, simultaneously, the thickness of coating is also increased substantially, and has been well solved coating layer thickness in the prior art, hardness, wearability and has been difficult to balanced the problem of improving, great application prospect.
Description
Technical field
The invention belongs to technical field of metal material surface modification more particularly to it is a kind of have excellent resistance to high temperature oxidation,
Titanium alloy surface high-temperaure coating of polishing machine and preparation method thereof.
Background technology
Titanium or titanium alloy density is small, specific strength is high, corrosion stability is excellent and without magnetic, and with shape memory, superconduction, hydrogen storage,
Four big unique function of biocompatibility, forming and welding easy to process are widely used in aerospace, naval vessel, military project, smelting
The fields such as gold, chemical industry, sea water desalination, light industry, environmental protection and medical instrument, and huge economic and social benefit is created,
It occupies an important position and acts in the national economic development and national defence.Compared with nickel base superalloy, titanium or titanium alloy has
Lower density, higher mechanical behavior under high temperature and excellent creep-resistant property are aircrafts and advanced aero engine of new generation
Preferred material.At present, titanium alloy dosage account for aero-structure weight ratio become weigh the advanced degree of aircraft index it
One.With the raising of the promotion of aeroplane performance, particularly aero-engine thrust-weight ratio, the demand of titanium or titanium alloy will drastically increase
Add.
However, titanium or titanium alloy hardness is low, wear resistance and high temperature oxidation resistance are poor, it is seriously limited in aviation
Application range in industry.First, titanium or titanium alloy hardness is low, wears no resistance, and occurs easily under the conditions of dry friction and wear tight
The adhesive wear and abrasive wear of weight, so as to cause the failure of component.Secondly, the high temperature oxidation resistance of titanium or titanium alloy is poor, sternly
The maximum temperature of titanium or titanium alloy long service is constrained again.The maximum operation (service) temperature of conventional titanium alloy long service is no more than
It 350 DEG C, even novel high-temperature titanium alloy, can only also be used at a temperature of slightly above 500 DEG C, this is just significantly limited
Application of the titanium or titanium alloy in aero-engine.With (alpha+beta) the Type Titanium Alloy Ti-6Al- being most widely used in aircraft industry
For 4V, the maximum operation (service) temperature of long service is only 350 DEG C, can only be relatively low for manufacturing aero-engine operating temperature
Fan blade and compressor the 1st, 2 grade blades.When service temperature be more than its maximum operation (service) temperature when, will occur it is serious oxidation and
The crisp problem of oxygen.During high temperature, oxygen is spread to matrix, thickens oxidation film, oxidation film is caused to reduce and occur with substrate combinating strength
It peels off, so as to which oxidation film be made to lose protective effect；On the other hand, the infiltration of oxygen causes matrix lattice to distort and formed ordered phase,
Brittle layer is generated in alloy surface, leads to the mechanical property degradation of alloy.Due to fretting wear and oxidation behaviors master
The surface of material is happened at, therefore uses suitable process for treating surface, being prepared on titanium or titanium alloy surface has special work(
The coating of energy can effectively improve the case hardness, wear resistance and high temperature oxidation resistance of titanium or titanium alloy, for example, specially
A kind of titanium alloy high-temperature protection Al-Si co-osmosized coatings and preparation method thereof disclosed in sharp 201510567419.X, in titanium alloy table
Face prepares Ti (Al, Si) using cold spraying Al-Si and heat diffusion treatment3Co-osmosized coating.Coating composition is Ti (Al, Si)3, Si
It is uniformly distributed in the coating, coating layer thickness is at 20 μm or more.However, coating layer thickness prepared by this method is smaller, can not adapt to grow
The demand of phase high-temperature service.
Patent CN201210216709.6 discloses a kind of titanium alloy surface resistance to high temperature oxidation and anti abrasive oxide ladder
Coating and preparation method thereof is spent, double brightness plasma surface metallurgical technologies is first passed through and prepares Al-Cr-Ni alloys in titanium alloy surface
Then layer carries out ion oxidizing processing to Al-Cr-Ni alloy-layers, finally obtains by Al2O3、Cr2O3And NiO2The coat side of composition
Layer, the coating middle layer being made of Al-Cr-Ni alloy-layers, metallurgy is realized between coating and matrix by Al-Cr-Ni-Ti diffusion layers
With reference to.Coating maximum gauge is about 16 μm.But this method prepare coating there is also thickness it is small the problem of.
Patent 201410421065.3 discloses a kind of titanium alloy surface and fires enamel heat-proof coating material and its preparation side
Method, formula constituent SiO2、Al2O3、B2O3、CoO、TiO2、CaO、NaNO3、KMnO4、ZrO2、V2O5、CaF2And NiO；It is made
Preparation Method is to prepare raw material by formula, is uniformly melting into melt liquid through ball milling mixing, water quenching is dried to obtain blocky vitreous enamel
Material.It adds in mill addition ball milling and obtains glaze slip, spray on titanium alloy substrate, by being burnt into and keeping the temperature, obtain one layer of enamel at it and apply
Layer.The resistance to 900 DEG C of air oxidations weightening of enamel coating is less than 0.1mg/cm2, 850 DEG C of resistance to fused salt corrosion weightlessness are less than 0.1mg/cm2,
The acute degeneration of resistance to the temperature difference is higher than 300 DEG C, and mechanical resistant impact is more than 300 × 10-3J.But enamel coating brittleness is big, and the combination of matrix
Insufficient strength is secured, and long-time service will appear the problem of cracking peels off.
Laser surface modification processing mainly uses the laser beam of high-energy density, in a non-contact manner heating material table
Face prepares certain thickness process layer in material surface, so as to reach improvement material surface hardness, wearability, corrosion resistance and resist
The purpose of high temperature oxidation resistance.Since laser beam has the spy that monochromaticjty is good, coherence is good, good directionality and energy density are high
Point, therefore compared with other surfaces modification technology, Laser Surface Treatment has controllable surface reforming layer thickness, modified layer and matrix
In typical metallurgical binding, heat affected area is small and workpiece deforms the advantages that small, thus is widely used in titanium or titanium alloy, steel
Wait the surface modification treatment of materials.For example, patent 201510788144.2, which discloses a kind of titanium alloy surface, prepares high Nb titaniums aluminium
The method of based alloy antioxidant coating.This method utilizes CO2Original between the lower Ti-Al-Nb complex element powder of laser beam effect
Position synthetic reaction and heat treatment, high Nb titanium aluminium base alloys coating is prepared in titanium alloy surface.Coating preparation process includes：Titanium alloy
Surface preparation, powder are prepared and ball milling, powder are preset, selective laser sintering, coating is heat-treated, antioxygenic property is tested and aobvious
Micro-assembly robot analyzes seven parts；But since the component system coating hardness and wearability be not high, this method is limited as wear-resistant
The application of coating.
To sum up, it is difficult to still have coating layer thickness, hardness, wearability, high temperature oxidation resistance for existing titanium alloy surface coating
The problem of being improved with equilibrium, therefore, it is necessary to a kind of with developing new titanium alloy surface coating component system and preparation method thereof,
This has important practical significance to the further genralrlization application for expanding titanium alloy.
Invention content
For the above-mentioned prior art the problem of, the present invention is intended to provide a kind of titanium alloy surface high-temperaure coating and
Preparation method, the present invention prepare generated in-situ high temperature resistant by the way of laser surface alloying, in titanium alloy surface and apply
For layer with matrix in typical metallurgical binding, this coating not only has excellent resistance to high temperature oxidation, polishing machine, meanwhile, coating
Thickness also increased substantially, well solved coating layer thickness in the prior art, hardness, wearability and be difficult to
The problem of equilibrium improves, great application prospect.
An object of the present invention is to provide a kind of original material component system of titanium alloy surface high-temperaure coating.
The second object of the present invention is to provide a kind of surface to have cated titanium alloy.
The third object of the present invention is to provide a kind of method for preparing high-temperaure coating in titanium alloy surface.
The fourth object of the present invention is to provide the titanium alloy with high-temperaure coating prepared by a kind of above method.
The fifth object of the present invention is to provide above-mentioned titanium alloy surface high-temperaure coating original material component system, is closed in titanium
Gold surface prepares the method for high-temperaure coating and the application of the second purpose and the described two titanium alloys of the fourth purpose.
For achieving the above object, the invention discloses following technical proposals：
First, the invention discloses a kind of original material component system of titanium alloy surface high-temperaure coating, the ingredients
System is expressed as：Al-Nb-Si-X, wherein, X=B and/or C.
Preferably, the component system of the original raw material of the coating is：(45~75) %Al- (10-20) %Nb- (5-
20) %Si- (0~15) %B- (0~20) %B4C- (0~10) %C, quality；In the component system, in addition to Al, Nb, Si it
Outside, it is necessary to include B, B4C, at least one of C.
It is further preferred that the component system of the original raw material of the coating is：55%Al-20%Nb-5%Si-10%
B4C-10%C, quality.
Secondly, the invention discloses a kind of surfaces to have cated titanium alloy, the original material component system of the coating
For：Al-Nb-Si-X, wherein, X=B and/or C.
Preferably, the Al-Nb-Si-X is：55%Al-20%Nb-5%Si-10%B4C-10%C, quality.
Again, the invention discloses a kind of using Al-Nb-Si-X component systems high-temperaure coating is prepared in titanium alloy surface
Method, specifically, the preparation method includes the following steps：
1) coating original material is mixed in proportion；
2) pending titanium alloy base material surface scale is removed；
3) the titanium alloy substrate surface being preset at the original material in step 1) in step 2), swashs starting powder
Optical surface Alloying Treatment, after cooling to obtain the final product.
In step 1), the original material for Al powder (purity >=99.0%, 200 mesh), Si powder (purity >=99.99%,
200 mesh), Nb powder (purity >=99.9%, 200 mesh), B powder (purity >=99.9%, 325 mesh), graphite C powder (purity >=99.9%,
325 mesh), B4C powder (purity >=99.9%, 325 mesh).
In step 3), the pre-set thickness of the original material is 0.8-1.0mm.
In step 3), the laser surface alloying technique is：Laser power is 3.0-3.5kW, and sweep speed is
360mm/min, spot diameter are 10mm × 1mm, and laser surface alloying process carries out in homemade semienclosed container, container
In be passed through argon gas as protective gas.
In addition, the titanium alloy of the preparation method preparation the invention discloses above-mentioned titanium alloy surface high-temperaure coating.
Finally, the original material component system the invention discloses above-mentioned titanium alloy surface high-temperaure coating, surface have
It is prepared by the titanium alloy of coating, the method that titanium alloy surface high-temperaure coating is prepared using mentioned component system, above-mentioned preparation method
The titanium alloy with high-temperaure coating application, the application includes：For aerospace, naval vessel, military project, metallurgy, chemical industry,
In the fields such as sea water desalination, light industry, environmental protection and medical instrument.
Compared with prior art, the present invention achieves following advantageous effect：
(1) excellent high temperature oxidation resistance：The titanium alloy of coating prepared with the present invention aoxidizes in 800 DEG C of air
After 1000h, coating oxidation weightening is only the 1/35~1/57 of the only matrix of titanium alloy substrate, and coating surface oxidation film is without apparent
Peeling and problem of Cracking, achieve excellent high temperature oxidation resistance.
(2) excellent High-temperature-resandant andant wear-resistant performance：With the titanium alloy of coating prepared by the present invention 30min is worn at 800 DEG C
Afterwards, the Volume erosion rate of coating is only the 1/3.2-1/6.8 of titanium alloy substrate, achieves excellent High-temperature-resandant andant wear-resistant performance.
(3) high hard micro- degree：Containing boride and silicide in coating prepared by the present invention, therefore, prepared by the present invention
The microhardness of coating be up to 1252HV, meanwhile, these borides and silicide are maintained to high hard at high temperature
Degree, this provides excellent High-temperature-resandant andant wear-resistant performance for coating again.
(4) coating layer thickness significantly carries：Coating layer thickness prepared by the present invention has reached 800 μm -1100 μm, with background technology
Described in method obtain coating layer thickness (20 μm) compare, coating layer thickness improves 40-55 times；In addition, prepared by coating of the present invention
When original material pre-set thickness for 0.8-1.0mm, this is completely the same with the coating layer thickness of the present invention, and in this thickness area
Interior, the amplitude of variation very little of hardness remains this high rigidity level, illustrates the phase composition in coating and distribute very evenly,
It is capable of providing stable, uniform mechanical property.
(5) comprehensive performance has obtained balanced raising：Titanium alloy coating prepared by the component system of the present invention is at high temperature not
High high-wearing feature and antioxidative is only had both, also with high microhardness, meanwhile, the thickness of coating has obtained significantly carrying
Height, the mechanical property of coating is uniform, stable, and compared to the prior art, the comprehensive performance of coating of the invention has obtained equilibrium and carried
It is high.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is the XRD diagram of coating prepared by 1-10 of the embodiment of the present invention.
Fig. 2 is the SEM photograph of coating prepared by 1-10 of the embodiment of the present invention.
Fig. 3 is the room temperature hardness curve of coating prepared by 1-10 of the embodiment of the present invention.
Fig. 4 is oxidizing dynamics curve of the coating of 1-10 of embodiment of the present invention preparations at 800 DEG C.
Fig. 5 is wear rate of the coating of 1-10 of embodiment of the present invention preparations at 800 DEG C.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As described in background, existing titanium alloy surface coating still has coating layer thickness, hardness, wearability, resists
High temperature oxidation stability is difficult to balanced the problem of improving, therefore, a kind of titanium alloy surface high-temperaure coating and preparation method thereof, in conjunction with
The present invention is further described in the drawings and specific embodiments.
In the embodiment of the present invention, the original material for Al powder (purity >=99.0%, 200 mesh), Si powder (purity >=
99.99%, 200 mesh), Nb powder (purity >=99.9%, 200 mesh), B powder (purity >=99.9%, 325 mesh), graphite C powder (purity
>=99.9%, 325 mesh), B4C powder (purity >=99.9%, 325 mesh).
Embodiment 1
A kind of Preparation Method of titanium alloy surface high-temperaure coating, includes the following steps：
(1) coating original material and proportioning are：65%Al-20%Nb-10%Si-5%B, powder ball mill mix equal
It is even for use.
(2) preparation of titanium alloy substrate material：Ti-6Al-4V titanium alloys with sand paper are polished and expose metallic luster, with third
Ketone removes the grease on surface, and the ultrasonic cleaning in alcohol is dried for use.
(3) high-purity argon gas is passed through in semienclosed container bottom, is allowed to all argon gas atmospheres in container.
(4) powder of step (1) is preset to the alloy surface of step (2), pre-set thickness is in 0.8-1.0mm.It will be preset
The sample of powder is positioned on the fixation step in container.
(5) it is preheated with laser beam flying, using CO2Gas laser carries out laser to sample ready in step (4)
Alloying is tested, 3.2kW, sweep speed 360mm/min, and spot diameter is 10mm × 1mm.
Embodiment 2
With embodiment 1, difference lies in：Coating original material and proportioning are：60%Al-20%Nb-10%Si-10%B.
Embodiment 3
With embodiment 1, difference lies in：Coating original material and proportioning are：55%Al-20%Nb-10%Si-15%B.
Embodiment 4
With embodiment 1, difference lies in：Coating original material and proportioning are：60%Al-20%Nb-10%Si-10%B4C。
Embodiment 5
With embodiment 1, difference lies in：Coating original material and proportioning are：58%Al-20%Nb-10%Si-10%B4C-
2%C.
Embodiment 6
With embodiment 1, difference lies in：Coating original material and proportioning are：63%Al-20%Nb-10%Si-5%B4C-
2%C.
Embodiment 7
With embodiment 1, difference lies in：Coating original material and proportioning are：65%Al-20%Nb-5%Si-5%B4C-
5%C.
Embodiment 8
With embodiment 1, difference lies in：Coating original material and proportioning are：55%Al-20%Nb-5%Si-10%B4C-
10%C.
Embodiment 9
With embodiment 1, difference lies in：Coating original material and proportioning are：55%Al-20%Nb-10%Si-10%B4C-
5%B.
Embodiment 10
With embodiment 1, difference lies in：Coating original material and proportioning are：45%Al-20%Nb-10%Si-20%B4C-
5%B.
Embodiment 11
With embodiment 1, difference lies in：Coating original material and proportioning are：75%Al-10%Nb-5%Si-10%B；Step
It is rapid 3) in, the laser power be 3.0kW.
Embodiment 12
With embodiment 1, difference lies in：Coating original material and proportioning are：70%Al-15%Nb-10%Si-5%B4C；
In step 3), the laser power is 3.5kW.
Embodiment 13
With embodiment 1, difference lies in：Coating original material and proportioning are：60%Al-10%Nb-15%Si-5%B-5%
C-5%B4C；In step 3), the laser power is 3.3kW.
Embodiment 14
With embodiment 1, difference lies in：Coating original material and proportioning are：45%Al-10%Nb-20%Si-5%
B10%-C-10%B4C；In step 3), the laser power is 3.5kW.
Performance test：
(1) XRD is tested：XRD tests are carried out to titanium alloy surface high-temperaure coating prepared by embodiment 1-10, as a result as schemed
Shown in 1.
From Fig. 1 (a) as can be seen that the object of coating prepared by embodiment 1-3 is mutually mainly by TiAl2、Ti5Si3And TiB2Phase group
Into.It has no that the peak of Nb compounds occurs in coating, illustrates that Nb is solid-solution in the TiAl of alloying layer in the form of displacement atom2Phase
In.
From Fig. 1 (b) as can be seen that the object of coating prepared by embodiment 4-8 is mutually mainly by TiAl2、TiAl3、Ti5Si3、
TiB2、Ti3AlC2With TiC phase compositions, while with the presence of a small amount of remaining graphite in coating.The presence of graphite helps to improve painting
The antifriction performance of layer.It has no that the peak of Nb compounds occurs in coating, illustrates that Nb is solid-solution in alloying layer in the form of displacement atom
TiAlxXiang Zhong.
From Fig. 1 (c) as can be seen that the object of coating prepared by embodiment 9-10 is mutually mainly by TiAl2、TiAl3、Ti5Si3、
TiB2And Ti2AlC phase compositions have no that the peak of Nb compounds occurs in coating, illustrate that Nb is solid-solution in alloy in the form of displacement atom
Change the TiAl of layerxXiang Zhong.
(2) SEM observations and hardness test：To the section structure of the embodiment 1-10 titanium alloy surface high-temperaure coatings prepared
Structure carries out SEM observations and hardness test, as a result as shown in Figures 2 and 3.
From Fig. 2 (a)-(c), Fig. 3 (a) as can be seen that the coating layer thickness of embodiment 1-3 preparations applies between 0.9-1.1mm
Layer is with matrix in typical metallurgical binding, rodlike TiB2And blocky and strip Ti5Si3Dispersed precipitate is in the substrate of coating；
With the increase of B content in coating, generated in-situ TiB in coating2Amount increases, and the hardness and wearability of coating also increase therewith
Add.The average hardness of coating is 715-842HV.
From Fig. 2 (d)-(h), Fig. 3 (b) as can be seen that the coating layer thickness of embodiment 4-8 preparations applies between 0.8-1.0mm
Layer is with matrix in typical metallurgical binding, rodlike or acicular TiB2, blocky and strip Ti5Si3And blocky, dendroid and ten
Word petal-shaped carbide dispersion is distributed in the substrate of coating.With the increase of C atom contents in coating, in-situ preparation in coating
Carbide content increase, the hardness and wearability of coating are consequently increased.The average hardness of coating is 812-1252HV.
From Fig. 2 (i)-(j), Fig. 3 (c) as can be seen that the coating layer thickness of embodiment 9-10 preparations is between 0.8-1.0mm,
Coating is with matrix in typical metallurgical binding, rodlike or acicular TiB2, blocky and strip Ti5Si3And blocky, dendroid and
Cross petal-shaped carbide dispersion is distributed in the substrate of coating.With the increase of B and C atom contents in coating, coating Central Plains
The ceramic phase amount of position increases, and the hardness and wearability of coating are consequently increased.The average hardness of coating is 844-910HV.
(3) high-temperature oxidation resistance is tested：To the embodiment 1-10 titanium alloy surface high-temperaure coatings prepared at 800 DEG C
Antioxygenic property test is carried out, the results are shown in Figure 4.
Figure 4, it is seen that weightening of the coating of embodiment 1-3 after 800 DEG C of oxidation 1000h is the 1/ of matrix
36.1-1/41.2；1/40.6-1/57 of weightening of the coating of embodiment 4-8 after 800 DEG C of oxidation 1000h for matrix；Embodiment
1/48-1/54 of weightening of the coating of 9-10 after 800 DEG C of oxidation 1000h for matrix, and oxidation kinetics follows parabola
Rule.
(4) high temperature abrasion resistance is tested：To embodiment 1-10 prepare titanium alloy surface high-temperaure coating at 800 DEG C into
Row wearability test, the results are shown in Figure 5.
From figure 5 it can be seen that the coating of embodiment 1-3 is about 0.45-0.53 in 800 DEG C of stable state average friction coefficients,
Volume erosion rate is the 1/3.2-1/3.6 of matrix；The coating of embodiment 4-8 is about 0.32- in 800 DEG C of stable state average friction coefficients
0.43, Volume erosion rate is the 1/4.4-1/6.8 of matrix；The coating of embodiment 9-10 in 800 DEG C of stable state average friction coefficients about
For 0.38-0.41, Volume erosion rate is the 1/4.1-1/5.3 of matrix.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for those skilled in the art
For member, the application can have various modifications and variations.All any modifications within spirit herein and principle, made,
Equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of original material component system of titanium alloy surface high-temperaure coating, which is characterized in that the component system represents
For：Al-Nb-Si-X, wherein, X=B and/or C.
2. component system as described in claim 1, which is characterized in that the component system is：(45~75) %Al- (10-
20) %Nb- (5-20) %Si- (0~15) %B- (0~20) %B4C- (0~10) %C, quality；In the component system, except Al,
Except Nb, Si, it is necessary to include B, B4C, at least one of C.
3. component system as claimed in claim 2, which is characterized in that the component system is：55%Al-20%Nb-5%
Si-10%B4C-10%C, quality.
4. a kind of surface has cated titanium alloy, which is characterized in that the original material component system of the coating is：Al-Nb-
Si-X, wherein, X=B and/or C.
5. surface as claimed in claim 4 has cated titanium alloy, which is characterized in that the Al-Nb-Si-X is：55%
Al-20%Nb 5%Si-10%B4C-10%C, quality.
6. a kind of preparation method of titanium alloy surface high-temperaure coating, which is characterized in that the preparation method includes the following steps：
1) original material of claim 1-3 any one of them titanium alloy surface high-temperaure coatings is mixed in proportion；
2) pending titanium alloy base material surface scale is removed；
3) the titanium alloy substrate surface being preset at the original material in step 1) in step 2) carries out laser table to starting powder
Surface alloying processing, after cooling to obtain the final product.
7. the preparation method of titanium alloy surface high-temperaure coating as claimed in claim 6, which is characterized in that in step 1), institute
State original material for Al powder (purity >=99.0%, 200 mesh), Si powder (purity >=99.99%, 200 mesh), Nb powder (purity >=
99.9%, 200 mesh), B powder (purity >=99.9%, 325 mesh), graphite C powder (purity >=99.9%, 325 mesh), B4C powder (purity
>=99.9%, 325 mesh).
8. the preparation method of titanium alloy surface high-temperaure coating as claimed in claim 6, which is characterized in that in step 3), institute
The pre-set thickness for the original material stated is 0.8-1.0mm；
Preferably, in step 3), the laser surface alloying technique is：Laser power is 3.0-3.5kW, and sweep speed is
360mm/min, spot diameter are 10mm × 1mm, and laser surface alloying process carries out in homemade semienclosed container, container
In be passed through argon gas as protective gas.
9. titanium alloy prepared by the preparation method such as claim 6-8 any one of them titanium alloy surface high-temperaure coatings.
10. original material component system, such as right such as claim 1-3 any one of them titanium alloy surface high-temperaure coatings
It is required that the surface described in 4 or 5 has cated titanium alloy, such as claim 6-8 any one of them method, such as claim 9
The titanium alloy is led in aerospace, naval vessel, military project, metallurgy, chemical industry, sea water desalination, light industry, environmental protection and medical instrument
Application in domain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810141887.4A CN108220957B (en) | 2018-02-11 | 2018-02-11 | Titanium alloy surface high-temperature-resistant coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810141887.4A CN108220957B (en) | 2018-02-11 | 2018-02-11 | Titanium alloy surface high-temperature-resistant coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108220957A true CN108220957A (en) | 2018-06-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020571A (en) * | 2020-01-15 | 2020-04-17 | 中北大学 | Alloy powder for laser cladding of stainless steel surface and application thereof |
| CN111945095A (en) * | 2020-09-07 | 2020-11-17 | 南京工程学院 | Tantalum-based alloy-based friction-reducing noise-reducing heat-insulating multifunctional composite layer |
| CN112775428A (en) * | 2020-12-25 | 2021-05-11 | 北京交通大学 | Ti generated on the surface of a titanium substrate in situ2AlC ceramic layer and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103966598A (en) * | 2014-05-22 | 2014-08-06 | 山东大学 | Titanium alloy surface multi-element laser alloyed layer and preparation method thereof |
| US20170145568A1 (en) * | 2014-06-18 | 2017-05-25 | Zhejiang University Of Technology | Metal-based/diamond laser composite coating and preparation method thereof |
| CN106757013A (en) * | 2017-01-20 | 2017-05-31 | 青岛滨海学院 | A kind of titanium alloy laser surface silicide strengthens polynary high-temperature alloy layer and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966598A (en) * | 2014-05-22 | 2014-08-06 | 山东大学 | Titanium alloy surface multi-element laser alloyed layer and preparation method thereof |
| US20170145568A1 (en) * | 2014-06-18 | 2017-05-25 | Zhejiang University Of Technology | Metal-based/diamond laser composite coating and preparation method thereof |
| CN106757013A (en) * | 2017-01-20 | 2017-05-31 | 青岛滨海学院 | A kind of titanium alloy laser surface silicide strengthens polynary high-temperature alloy layer and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020571A (en) * | 2020-01-15 | 2020-04-17 | 中北大学 | Alloy powder for laser cladding of stainless steel surface and application thereof |
| CN111945095A (en) * | 2020-09-07 | 2020-11-17 | 南京工程学院 | Tantalum-based alloy-based friction-reducing noise-reducing heat-insulating multifunctional composite layer |
| CN112775428A (en) * | 2020-12-25 | 2021-05-11 | 北京交通大学 | Ti generated on the surface of a titanium substrate in situ2AlC ceramic layer and preparation method thereof |
| CN112775428B (en) * | 2020-12-25 | 2022-03-25 | 北京交通大学 | Ti generated on the surface of a titanium substrate in situ2AlC ceramic layer and preparation method thereof |
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