CN106756997A - A kind of ceramic reinforced Metal Substrate laser cladding layer and its preparation technology - Google Patents
A kind of ceramic reinforced Metal Substrate laser cladding layer and its preparation technology Download PDFInfo
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- CN106756997A CN106756997A CN201611114206.2A CN201611114206A CN106756997A CN 106756997 A CN106756997 A CN 106756997A CN 201611114206 A CN201611114206 A CN 201611114206A CN 106756997 A CN106756997 A CN 106756997A
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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
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/062—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on B4C
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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
- C22C32/0052—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 only carbides
- C22C32/0057—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 only carbides based on B4C
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- Chemical Kinetics & Catalysis (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention provides a kind of ceramic reinforced Metal Substrate laser cladding layer, is on matrix, with Ni60A Co-based alloy powders and nickel bag B in titanium alloy4C(Ni@B4C) for cladding material laser melting coating prepares ceramic reinforced Metal Substrate laser cladding layer.Using " metal+ceramics " composite system, using laser melting and coating technique ceramic reinforced metal-based compound coating is prepared in titanium alloy surface, the high-plasticity of metal material is combined with the hard epistasis high of the height of ceramic material, the obdurability matching of cladding layer is realized, the potential of cladding layer is given full play to.The present invention can carry out laser melting coating by the way that the proportioning of each component in composite system is adjusted flexibly under suitable technique, obtain the cladding layer of excellent performance.Step is simple and convenient to operate, practical.
Description
Technical field
The invention belongs to metal material surface reinforcing and technical field of modification, more particularly to a kind of ceramic reinforced Metal Substrate swashs
Light cladding layer and its preparation technology.
Background technology
Titanium alloy has the advantages that specific strength is high, specific modulus is high, corrosion resistance good, in Aero-Space, national defense industry, oil
The application in the fields such as work, ocean vessel, metallurgy, automobile making is taken seriously.But titanium alloy generally existing hardness is low, wearability
Poor shortcoming, is restricted in the application of industrial circle friction occasion.
Laser melting coating is also used for the surface peening of titanium alloy and is modified as a kind of process for modifying surface, as raising
One of effective ways of surface property such as titanium alloy hardness, wearability and high temperature oxidation resistance.
Laser melting coating is to make cladding dusty material and matrix material metal surface a thin layer simultaneously molten using high energy laser beam
Change, form small molten bath, and as the scanning rapid solidification of laser beam, acquisition dilution factor are relatively low, metallurgical binding is presented with base material
Face coat.By designing different cladding material systems, laser melting coating is carried out using suitable technological parameter, can prepared
Go out the cladding layer of excellent performance, improve the surface propertys such as the wear-resisting, anti-corrosion, heat-resisting of matrix, inoxidizability.Due to laser beam energy
Density is higher, and heating cooling velocity is very fast, and molten bath existence time is short, it is easy to obtain tiny, the fine and close cladding layer of microstructure.
Boron carbide (B4C hardness) is only second to diamond and cubic boron nitride, its extraordinary hardness, especially approximately constant
Elevated temperature strength, make B4C turns into one of optimal high-temperature and wear-proof.B is introduced in laser cladding layer4C, can greatly carry
Matrix surface hardness high.But, because the chemical affinity of Ti and C, B element is stronger, in cladding process, B4C easily with enter
The Ti entered in molten bath reacts, and generates Ti-C, Ti-B compound so that the B of high rigidity4C is difficult to be retained in cladding layer
Come.In consideration of it, the present invention is using nickel bag boron carbide (Ni@B4C laser melting coating) is carried out, and achieves preferable effect, in order to change
Kind melting and coating process, while adding ni-based self-fluxing alloy (Ni60A).
The content of the invention
In order to overcome above-mentioned deficiency, the present invention to provide a kind of ceramic reinforced Metal Substrate laser cladding layer.Using " metal+pottery
Porcelain " composite system, prepares ceramic reinforced metal-based compound coating, by metal using laser melting and coating technique in titanium alloy surface
The high-plasticity of material combines with the hard epistasis high of the height of ceramic material, realizes the obdurability matching of cladding layer, gives full play to
The potential of cladding layer.The present invention can be entered by the way that the proportioning of each component in composite system is adjusted flexibly under suitable technique
Row laser melting coating, obtains the cladding layer of excellent performance.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of ceramic reinforced Metal Substrate laser cladding layer, is on matrix, with Ni60A Co-based alloy powders and nickel in titanium alloy
Bag B4C(Ni@B4C) for cladding material laser melting coating prepares ceramic reinforced Metal Substrate laser cladding layer.
Preferably, Ni60A Co-based alloy powders and nickel bag B in the cladding material4C(Ni@B4C mass percent) is：
Ni60A 50~95%, Ni@B4C 5~50%.
It is furthermore preferred that Ni60A Co-based alloy powders and nickel bag B in the cladding material4C(Ni@B4C mass percent)
For：Ni60A 70~90%, Ni@B4C 10~30%.
Preferably, the Ni60A Co-based alloy powders granularity is 45 μm~106 μm.
Preferably, the Ni@B420 μm~40 μm of C particle diameters.
Preferably, the Ni@B4C compositions are 40~60wt.%Ni+40~60wt.%B4C。
It is furthermore preferred that the Ni@B4C compositions are 40wt.%Ni+60wt.%B4C
Preferably, the composition of Ni60A nickel base self-fluxing alloy powders of the invention is as shown in table 1.
The chemical composition (wt.%) of the Ni60A nickel base self-fluxing alloy powders of table 1
Present invention also offers a kind of preparation method of ceramic reinforced Metal Substrate laser cladding layer, including：
1) it is pending titanium alloy base material removing surface is clean, remove surface scale；
2) cladding material is well mixed, substrate surface is layered in advance, carry out laser melting coating experiment, obtained final product.
Preferably, the laser melting coating experimental condition be laser power be 0.5~3.5kW, sweep speed be 200~
700mm/min, spot diameter is 2.5~4.5mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is 5~15L/
min；
It is furthermore preferred that laser melting coating experimental condition be laser power be 1.0~3.0kW, sweep speed be 300~
450mm/min, spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is 10~15L/min.
Preferably, cladding material overlays thickness for 0.8~1.2mm.
Present invention also offers nickel bag B4C(Ni@B4C) the application in titanium alloy laser cladding layer is prepared.
Beneficial effects of the present invention
(1) present invention uses Ni60A nickel base self-fluxing alloy powders, a certain amount of due to containing in self-fluxing alloyed powder
The deoxidation slag making element such as B, Si, can effectively suppress the oxidation in molten bath in cladding process, reduce crackle, stomata in coating etc. and lack
Fall into, improve coating quality and performance.Ni60A nickel base self-fluxing alloy powders in the ni-based self-fluxing alloy of current application, firmly
Degree is higher, and nickel content is few, low cost.
(2) present invention uses " metal+ceramics " composite system, is prepared in titanium alloy surface using laser melting and coating technique
Ceramic reinforced metal-based compound coating, the high-plasticity of metal material is combined with the hard epistasis high of the height of ceramic material, real
The obdurability matching of existing cladding layer, gives full play to the potential of cladding layer.The present invention can be by being adjusted flexibly in composite system
The proportioning of each component, carries out laser melting coating under suitable technique, obtains the cladding layer of excellent performance.
(3) in Laser Cladding on Titanium Alloy Ni60A nickel base self-fluxing alloy powders and Ni@B4C ceramic phases, can form
γ-Ni solid solution phases, and Ni in Ni60A nickel base self-fluxing alloy powders can chemically react with the Ti in molten bath, it is raw
Into Ti-Ni intermetallic compounds；Meanwhile, part Ni@B4B, C in C can react with Ti, generate TiB, TiB2, TiC etc. it is hard
Matter, partly has neither part nor lot in the B of reaction4C as the efficient hardening phase in cladding layer, can also improve the hardness and wear resistance of cladding layer
Energy.Additionally, in wear process, the B in cladding layer4C can be oxidized to boron oxide, thus play excellent friction reducing effect.This
Invent the Ni@B for using4In C, the content of Ni is low (40~60wt.%), and the cost of material is low, and the technical requirements to cladding are higher,
Under preparation technology of the invention, preferable effect is obtained.
(4) preparation method of the present invention is simple, practical, it is easy to promote.
Brief description of the drawings
Microstructure morphology (the Ni60A+10wt.%Ni@B on Fig. 1 laser cladding layers top4C)；
The wear weight loss figure of Fig. 2 embodiments 10,11；
The XRD diffracting spectrums of Fig. 3 embodiments 10 (a) and embodiment 11 (b) cladding layer；
The grinding defect morphology of Fig. 4 embodiments 10 (a) and embodiment 11 (b) cladding layer；
The wear weight loss figure of Fig. 5 embodiments 5,12,13.
Specific embodiment
Feature of present invention and other correlated characteristics are described in further detail by the following examples, in order to the same industry
The understanding of technical staff：
Cladding layer capability method of testing of the present invention：
(1) micro-hardness testing：The microhardness of cladding layer, load are tested using DHV-1000 types microhardness testers
200g, the load time is 10s, determines micro- every 0.1mm by clad layer surface to base material along the maximum fusion penetration direction of cladding layer
Hardness number, to analyze the microhardness distribution feature at each position of cladding layer.
(2) wear test：Wear test is carried out with HT-1000 types abrasion tester, abrading-ball selects Si3N4Ceramic grinding ball
(Φ 6mm), rotating speed 448r/min, 4~6mm of friction radius, load are 1.5kg, and the wear test time is 30min.During with unit
Between wear weight loss amount (g/min) characterize cladding layer anti-wear performance.
After the completion of wear test, with its wear surface of scanning electron microscopic observation, its wear mechanism is studied.
Further illustrated with reference to specific embodiment：
Embodiment 1：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+10wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
1kW, sweep speed is 300mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Research shows that the average microhardness of the cladding layer is about 1200HV0.2, wear weight loss rate is 3.33 × 10-5g/
min.Titanium alloy substrate hardness is about 350~400HV0.2, wear weight loss rate is 4.27 × 10-4g/min.With titanium alloy-based body phase
Than, the hardness of cladding layer with have raising by a relatively large margin, wearability brings up to 12.82 times of titanium alloy substrate.
Microstructure to cladding layer is observed, and is as a result shown, microstructure of surface cladding layer densification zero defect, and has spherical
Grain structure (Fig. 1), is the B of reservation in cladding layer through analysis4C particles, these B4C to improve cladding layer anti-wear performance very
Favorably.On the one hand, the B of high rigidity4C as the efficient hardening phase in cladding layer, can improve the hardness and wear resistance energy of cladding layer；
On the other hand, in friction process, B4C can may also function as certain antifriction function with oxygen reaction generation boron oxide.
Embodiment 2：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+15wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
1kW, sweep speed is 450mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Embodiment 3：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+20wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
1kW, sweep speed is 600mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Embodiment 4：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+15wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
2kW, sweep speed is 300mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Research shows that the average microhardness of the cladding layer is about 1360HV0.2, wear weight loss rate is 2.5 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
17.08 times.
Embodiment 5：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+20wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
2kW, sweep speed is 450mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Research shows that the average microhardness of the cladding layer is about 1400HV0.2, wear weight loss rate is 3.33 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
12.82 times.
Embodiment 6：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+10wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
2kW, sweep speed is 600mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Research shows that the average microhardness of the cladding layer is about 1420HV0.2, wear weight loss rate is 3.0 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
14.23 times.
Embodiment 7：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+20wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
3kW, sweep speed is 300mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Research shows that the average microhardness of the cladding layer is about 1550HV0.2, wear weight loss rate is 3.67 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
11.63 times.
Embodiment 8：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+10wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
3kW, sweep speed is 450mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Research shows that the average microhardness of the cladding layer is about 1350HV0.2, wear weight loss rate is 5.0 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
14.23 times.
Embodiment 9：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+15wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
3kW, sweep speed is 600mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Research shows that the average microhardness of the cladding layer is about 1400HV0.2, wear weight loss rate is 4.67 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
9.14 times.
Embodiment 10：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+15wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
2kW, sweep speed is 450mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
15L/min。
Research shows that the average microhardness of the cladding layer is about 1600HV0.2, wear weight loss rate is 2.0 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
21.35 times.
Embodiment 11：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+15wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
3kW, sweep speed is 450mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
15L/min。
Research shows that the average microhardness of the cladding layer is about 1350HV0.2, wear weight loss rate is 5.33 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
8.01 times.
Thing phase composition to cladding layer in embodiment 10 and embodiment 11 is analyzed, as shown in Figure 3.Result shows, melts
γ-Ni, NiTi, TiB are generated in coating2、TiC、Cr2B、CrB、Ni2B、Ni3B、NiTi2Deng thing phase.Cladding layer situ is generated
Various things mutually form complex intensifying effect, be conducive to the raising of cladding layer anti-wear performance.
Grinding defect morphology is observed, as shown in Figure 4.(laser power is 2.0kW), the plough of worn-out surface in embodiment 10
Ditch is shallower, the tiny abrasive dust for a small amount of attachment only occur；In embodiment 11 (laser power is 3.0kW), worn-out surface occur in that compared with
Big block peeling.As shown in Figure 4, one of the reason for microstructure coarsening of cladding layer is larger its wear weight loss in embodiment 11.
Embodiment 12：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+20wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
2kW, sweep speed is 300mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
10L/min。
Research shows that the average microhardness of the cladding layer is about 1300HV0.2, wear weight loss rate is 4.33 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
9.86 times.
Embodiment 13：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+20wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
2kW, sweep speed is 600mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
15L/min。
Research shows that the average microhardness of the cladding layer is about 1600HV0.2, wear weight loss rate is 3.0 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
14.23 times.
Embodiment 14：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+30wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
3kW, sweep speed is 450mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
15L/min。
Research shows that the average microhardness of the cladding layer is about 1650HV0.2, wear weight loss rate is 6.0 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
7.12 times.As Ni@B4When the addition of C is excessive, stomata is occurred in that in cladding layer, although cladding layer integral hardness is higher, but
It is that the appearance of stomata is unfavorable for greatly improving the wearability of cladding layer.
Embodiment 15：
Titanium alloy plate is cut into the bulk sample that size is 20mm × 10mm × 10mm and 25mm × 25mm × 10mm, after
Person is used for wear test, using laser beam by Ni60A+40wt.%Ni@B4The cladding of C mixed-powders in its 20mm × 10mm and
On 25mm × 25mm faces.
Concrete technology step is as follows：
1) pending substrate surface is cleaned out with sand paper, removes surface scale.
2) cladding material is well mixed, substrate surface is layered in advance using self-made clamp, it is 0.8mm to control its thickness.
3) CO is utilized2Gas laser is to step 2) in ready sample carry out cladding experiment, laser power is
3kW, sweep speed is 300mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath is blowed in cladding process, and argon flow amount is
15L/min。
Research shows that the average microhardness of the cladding layer is about 1600HV0.2, wear weight loss rate is 5.1 × 10-5g/
min.Compared with titanium alloy substrate, the hardness and wear resistance of cladding layer is obviously improved, and wearability brings up to titanium alloy substrate
8.54 times.Due to embodiment Ni@B4The addition of C is excessive, and the poor surface quality of cladding layer occurs in that increased number of stomata,
Coating is peeled off seriously in wear process, and wearability improves limited.
Finally it should be noted that the foregoing is only the preferred embodiments of the present invention, this hair is not limited to
Bright, although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, it is still
Technical scheme described in previous embodiment can be modified, or equivalent is carried out to which part.It is all in this hair
Within bright spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in protection scope of the present invention
Within.Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to the scope of the present invention
Limitation, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not required to
The various modifications or deformation made by paying creative work are still within protection scope of the present invention.
Claims (10)
1. a kind of ceramic reinforced Metal Substrate laser cladding layer, it is characterised in that in titanium alloy be on matrix, with the Ni-based conjunctions of Ni60A
Bronze end and nickel bag B4C(Ni@B4C) for cladding material laser melting coating prepares ceramic reinforced Metal Substrate laser cladding layer.
2. laser cladding layer as claimed in claim 1, it is characterised in that in the cladding material Ni60A Co-based alloy powders and
Nickel bag B4C(Ni@B4C mass percent) is：Ni60A50~95%, Ni@B4C 5~50%.
3. laser cladding layer as claimed in claim 1 or 2, it is characterised in that Ni60A nickel-base alloy powders in the cladding material
End and nickel bag B4C(Ni@B4C mass percent) is：Ni60A 70~90%, Ni@B4C 10~30%.
4. laser cladding layer as claimed in claim 1, it is characterised in that the Ni60A Co-based alloy powders granularity is 45 μm
~106 μm；
Or the Ni@B420 μm~40 μm of C particle diameters.
5. laser cladding layer as claimed in claim 1, it is characterised in that the Ni@B4C compositions are 40~60wt.%Ni+40
~60wt.%B4C。
6. laser cladding layer as claimed in claim 6, it is characterised in that the Ni@B4C compositions are 40wt.%Ni+60wt.%
B4C。
7. a kind of preparation method of ceramic reinforced Metal Substrate laser cladding layer, it is characterised in that including：
1) it is pending titanium alloy base material removing surface is clean, remove surface scale；
2) cladding material is well mixed, substrate surface is layered in advance, carry out laser melting coating experiment, obtained final product.
8. the method described in claim 7, it is characterised in that the laser melting coating experimental condition be laser power be 0.5~
3.5kW, sweep speed is 200~700mm/min, and spot diameter is 2.5~4.5mm, argon gas protection is blowed in cladding process molten
Pond, argon flow amount is 5~15L/min.
9. the method described in claim 7, it is characterised in that the laser melting coating experimental condition be laser power be 1.0~
3.0kW, sweep speed is 300~450mm/min, and spot diameter is 3.0mm, and argon gas protection molten bath, argon are blowed in cladding process
Throughput is 5~15L/min；
Or cladding material overlays thickness for 0.8~1.2mm.
10. nickel bag B4C(Ni@B4C) the application in titanium alloy laser cladding layer is prepared.
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| CN108342729A (en) * | 2018-03-30 | 2018-07-31 | 燕山大学 | A kind of intensifying method of pallet heat insulating mattress |
| CN108505039A (en) * | 2018-06-07 | 2018-09-07 | 清华大学天津高端装备研究院洛阳先进制造产业研发基地 | A kind of method of sugarcane root cutter laser alloying |
| CN110819980A (en) * | 2019-10-18 | 2020-02-21 | 山东大学 | In situ generation of ZrB2ZrC-based cladding material, composite coating and preparation method |
| CN112626515A (en) * | 2020-12-01 | 2021-04-09 | 浙江翰德圣智能再制造技术有限公司 | Method for improving performance of Inconel625 nickel-based powder laser cladding layer |
| CN112626515B (en) * | 2020-12-01 | 2023-07-04 | 浙江翰德圣智能再制造技术有限公司 | Method for improving performance of Inconel625 nickel-based powder laser cladding layer |
| CN112663054A (en) * | 2021-01-13 | 2021-04-16 | 山东建筑大学 | Method for preparing nickel-coated graphite powder modified protective layer by titanium alloy laser |
| CN116397123A (en) * | 2023-06-08 | 2023-07-07 | 西安热工研究院有限公司 | Abrasion resistant high nickel chromium/B 2 O 3 Material, preparation method and application thereof |
| CN116397123B (en) * | 2023-06-08 | 2023-09-08 | 西安热工研究院有限公司 | Abrasion resistant high nickel chromium/B 2 O 3 Material, preparation method and application thereof |
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