CN108359972A - Ni-Ti-Nb Alloy by Laser cladding coatings and preparation method thereof - Google Patents
Ni-Ti-Nb Alloy by Laser cladding coatings and preparation method thereof Download PDFInfo
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- CN108359972A CN108359972A CN201810145869.3A CN201810145869A CN108359972A CN 108359972 A CN108359972 A CN 108359972A CN 201810145869 A CN201810145869 A CN 201810145869A CN 108359972 A CN108359972 A CN 108359972A
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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
- C23C24/106—Coating with metal alloys or metal elements only
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
Abstract
The invention discloses a kind of Ni Ti Nb Alloy by Laser cladding coatings and preparation method thereof, and raw material are as follows with mass percent：Ni：44.3% 46.4%, Ti：46.4% 47.7%, surplus Nb；Raw material choose the elemental powders of corresponding element, and each component after mixing, prepares to form coating through laser melting coating.Ni Ti Nb Alloy by Laser cladding coatings of the present invention and preparation method thereof control cladding layer Ni Ti Nb ingredients by uniform mixing design, form the coating of 47Ni 44Ti 9Nb ingredients, improve titanium alloy surface performance with this using laser melting and coating technique.Pass through laser melting and coating technique, Ni Ti Nb alloy coats are prepared in titanium alloy surface, it can be on the basis of reservation titanium alloy original high-quality performance, improve its performance inferior, the advantages that making full use of the excellent performance of two kinds of alloys, that is, utilizing Ni Ti Nb Wear Resistances good, anticorrosive, the defects of improving poor TC4 Wear Resistances, micro- vibration erosion and contact corrosion, it is set to apply in the industrial production wider, performance is more preferably.
Description
Technical field
The present invention relates to material surface modifying technology field, specifically a kind of Ni-Ti-Nb Alloy by Laser cladding coating
And preparation method thereof.
Background technology
Currently, titanium alloy receives the favor of each application field researcher with its excellent performance, especially navigate in aviation
It, petrochemical industry, the fields such as medication are widely used.
But pass through domestic and international years of researches, it wears no resistance, micro- vibration erosion and the shortcomings of contact corrosion gradually expose.
Invention content
According to technical problem set forth above, a kind of Ni-Ti-Nb Alloy by Laser cladding coating and preparation method thereof is provided,
It wears no resistance for solving existing titanium alloy, micro- vibration erosion and the shortcomings of contact corrosion.The technological means that the present invention uses is such as
Under：
A kind of Ni-Ti-Nb Alloy by Laser cladding coating, raw material are as follows with mass percent：
Ni：44.3%-46.4%；
Ti：46.4%-47.7%；
Surplus is Nb；
Raw material choose the elemental powders of corresponding element, and each component after mixing, prepares to form coating through laser melting coating.
The tri- kinds of powder of Ni, Ti, Nb chosen as preferred raw material are the elemental powders of 100-200 mesh, granularity 74-
150μm。
A kind of preparation method of Ni-Ti-Nb Alloy by Laser cladding coating, includes the following steps：
S1, choose tie element than Ni, Ti, Nb raw material；
S2, raw material powder is uniformly mixed with alcohol；
S3, mixed raw material powder is dried；
S4, substrate surface greasy dirt and oxide layer are removed, polishes, keeps substrate surface bright and clean, smooth；
S5, powder after drying is equably laid on base material, thickness 2-4mm is scanned using laser heat source
Heating, electric current 100-300A, pulsewidth 5-8ms, frequency 15-20Hz, defocusing amount+20-+30cm, overlapping rate 40%-
60%, sweep speed 200-400mm/min use in cladding process argon gas as protection gas；
S6, it is heat-treated after being carried out to cladding layer, cladding metacoxal plate, which is put into starvation in 900-1000 DEG C of incubator, to be protected
Warm 3-6h, cools to room temperature with the furnace later；
S7, gained cladding coating in step S6 is polished flat, completes cladding coating and prepares.
As in preferred steps S1, the selection of described material N i, Ti, Nb, with mass percent, Ni：44.3%-
46.4%, Ti：46.4%-47.7%, surplus Nb take corresponding element elemental powders to mix.
As in preferred steps S2, specific mixing step is that the raw material powder in step S1 is put into ball grinder, cooperation
Ball carries out ball milling, ball milling 0.5-1h in alcohol, so that powder is sufficiently mixed uniformly.
As in preferred steps S3, specific drying steps are that mixed mixture in step S2 is put into drying box
Dry, drying process need to carry out in vacuum drying chamber, drying time 1-2h, 80-120 DEG C of temperature, be needed after drying completely
It waits for that powder is cooled to room temperature completely, then takes out from vacuum environment spare.
It is used as protection gas as argon gas is used in preferred steps S5, in cladding process.
Compared with prior art, Ni-Ti-Nb Alloy by Laser cladding coating of the present invention and preparation method thereof, profit
With laser melting and coating technique, cladding layer Ni-Ti-Nb ingredients are controlled by uniform mixing design, form 47Ni-44Ti-9Nb ingredients
Coating improves titanium alloy surface performance with this.
By laser melting and coating technique, Ni-Ti-Nb alloy coats are prepared in titanium alloy surface, titanium alloy original can retained
On the basis of the high-quality performance having, improves its performance inferior, make full use of the excellent performance of two kinds of alloys, that is, utilize Ni-Ti-Nb to close
The advantages that golden wearability is good, anticorrosive, makes it in work at the defects of improving poor TC4 Wear Resistances, micro- vibration erosion and contact corrosion
Using more extensively in industry production, performance is more preferably.
Laser melting and coating technique is that a kind of material is fused to another substrate surface by way of laser beam irradiation, and quickly
Solidification formed dilution rate it is extremely low and with the coating of base material metallurgical binding, to achieve the purpose that change material surface performance.Laser
Cladding compared to the method that conventional surface is modified have many advantages, such as easy to operate, coating be firmly combined with, coating layer thickness it is larger, not only
It can be used for piece surface reinforcing, moreover it is possible to carry out part reparation and manufacture.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is metallograph before coating solid solution of the present invention.
Fig. 2 is metallograph after coating solid solution of the present invention.
Fig. 3 is the lower component distributing figure (longitudinal direction) of coating sem detections of the present invention.
Fig. 4 is the lower component distributing figure (transverse direction) of coating sem detections of the present invention.
Specific implementation mode
A kind of Ni-Ti-Nb Alloy by Laser cladding coating, raw material are as follows with mass percent：Ni：44.3%-46.4%,
Ti：46.4%-47.7%, surplus Nb；Raw material choose corresponding element elemental powders, each component after mixing, through swash
Light cladding prepares to form coating.Tri- kinds of powder of Ni, Ti, Nb that raw material are chosen are the elemental powders of 100-200 mesh, and granularity is
74-150μm.Fig. 3 and Fig. 4 is then three kinds of the content distribution of elements for reflecting cladding layer, and three kinds of elements are in cladding layer as seen from the figure
In be evenly distributed.
A kind of preparation method of Ni-Ti-Nb Alloy by Laser cladding coating, includes the following steps：
S1, choose tie element than Ni, Ti, Nb raw material；
The selection of described material N i, Ti, Nb, according to laser model, working environment, titanium alloy substrate actual constituent,
Whether have ready conditions using protective gas, and the granularity of actual use powder, suitable element is chosen by uniform mixing design
Ratio, the target of uniform mixing design are that cladding layer component atoms ratio is made to be Ni：Ti：Nb=47：44：9, therefore, raw material
With mass percent, Ni：44.3%-46.4%, Ti：46.4%-47.7%, surplus Nb, raw material choose corresponding element
The elemental powders of 100-200 mesh mix, and granularity is controlled at 74-150 μm.
S2, raw material powder is uniformly mixed with alcohol；
Raw material powder in step S1 is put into ball grinder, compound rubber ball carries out ball milling, ball milling 0.5- in alcohol
1h, so that powder is sufficiently mixed uniformly.Container and abrading-ball used are unsuitable really up to the mark when ball milling, prevent from grinding powder and changing grain
Degree；It adulterates alcohol and carries out wet-milling, prevent the heat generated in mechanical milling process from Powder Oxidation, ball milling 0.5-1h being made so that powder is abundant
Mixing.
S3, mixed raw material powder is dried；
Mixed mixture in step S2 is put into drying box it is dry, drying process need in vacuum drying chamber into
Row, drying time 1-2h, 80-120 DEG C of temperature, it is dry completely after need to wait for powder and be cooled to room temperature completely, then from vacuum ring
It is taken out in border spare.
S4, substrate surface greasy dirt and oxide layer are removed, polishes, keeps substrate surface bright and clean, smooth；
S5, powder after drying is equably laid on base material, thickness 2-4mm is scanned using laser heat source
Heating, electric current 100-300A, pulsewidth 5-8ms, frequency 15-20Hz, defocusing amount+20-+30cm, overlapping rate 40%-
60%, sweep speed 200-400mm/min use in cladding process argon gas as protection gas；
Preferably, the powder thickness of laying is 2mm, is scanned heating, electric current 100A using laser heat source, pulsewidth is
5ms, frequency 15Hz, defocusing amount+20cm, overlapping rate 50%, sweep speed 300mm/min；Powder is preset in substrate surface
It is 2mm that fore-put powder thickness, which need to be controlled, postpones powder bed in advance and answers smooth no pit.
S6, it is heat-treated after being carried out to cladding layer, cladding metacoxal plate, which is put into starvation in 900-1000 DEG C of incubator, to be protected
Warm 3-6h, cools to room temperature with the furnace later；Fig. 1 and Fig. 2 is heat-treated front and back metallographic variation after being, reflect cladding from metallographic angle
The necessity of S6 in layer preparation process.
S7, gained cladding coating in step S6 is polished flat and can be put into production use, completed cladding coating and prepare.
Preferably, in step S5, use argon gas as protection gas in cladding process.
Ni-Ti-Nb Alloy by Laser cladding coating of the present invention and preparation method thereof is a kind of easy to operate, cost
It is cheap, it is effectively improved the method that the laser melting coating of titanium alloy surface performance prepares Ni-Ti-Nb alloy coats, can realize material
Surface is modified, and improves its hardness, wearability.This laser melting coating can carry out under atmospheric environment, can also install argon gas protection additional
Device.It forms that coating is fine and close, and ingredient is uniform, pore-free and is mingled with, material property can be improved, it is simple for process, of low cost, it can
The service life of part under various circumstances is improved in the industrial production.
Embodiment 1 is computed, mass ratio 25.99 according to atomic ratio Ni 44.3%, Ti 46.4%Nb 9.3%：
22.21：8.64, the mixing of tri- kinds of elements of Ni, Ti, Nb, 140 mesh elemental powders is weighed in mass ratio, and granularity is about 104 μm, is put into ball
In grinding jar, alcohol is added, liquid level to ball grinder one third or more is made not cross powder.
Reuse ball, ratio of grinding media to material 15:1,200 revs/min, ball milling 0.5h of rotating speed takes out powder and alcohol after ball milling
In mixture to beaker, with alcohol rinse ball grinder and abrading-ball, residual powder is rinsed into beaker, is put into vacuum drying chamber
In, it heats up after drying box is vacuumized, 80 DEG C of dry 1h are completely dried until powder, are cooled to room temperature removing vacuum environment
It takes out spare.
2mm thickness TC4 base material acetone removal surface and oil contaminant, foul are taken, substrate surface is polished with sand paper clean, smooth,
It is dried up through hair-dryer with after alcohol washes, makes scraper plate preset 2mm thickness powder bed on TC4 base materials by oneself with 2mm, use Nd:YAG swashs
Light device carries out laser melting coating, and it is 100A, pulsewidth 5ms, frequency 15Hz, positive out of focus+20cm, scanning that electric current, which is arranged, in running parameter
Speed is 300mm/min, and overlapping rate 50% forms cladding layer, polished flat with sand paper.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of Ni-Ti-Nb Alloy by Laser cladding coating, which is characterized in that raw material are as follows with mass percent：
Ni：44.3%-46.4%；
Ti：46.4%-47.7%；
Surplus is Nb；
Raw material choose the elemental powders of corresponding element, and each component after mixing, prepares to form coating through laser melting coating.
2. Ni-Ti-Nb Alloy by Laser cladding coating according to claim 1, which is characterized in that the Ni of raw material selection,
Tri- kinds of powder of Ti, Nb are the elemental powders of 100-200 mesh, and granularity is 74-150 μm.
3. a kind of preparation method of Ni-Ti-Nb Alloy by Laser cladding coating, it is characterised in that include the following steps：
S1, choose tie element than Ni, Ti, Nb raw material；
S2, raw material powder is uniformly mixed with alcohol；
S3, mixed raw material powder is dried；
S4, substrate surface greasy dirt and oxide layer are removed, polishes, keeps substrate surface bright and clean, smooth；
S5, powder after drying is equably laid on base material, thickness 2-4mm, heating is scanned using laser heat source,
Electric current is 100-300A, pulsewidth 5-8ms, frequency 15-20Hz, defocusing amount+20-+30cm, overlapping rate 40%-60%, scanning
Speed is 200-400mm/min, uses argon gas as protection gas in cladding process；
S6, it is heat-treated after being carried out to cladding layer, cladding metacoxal plate, which is put into starvation in 900-1000 DEG C of incubator, keeps the temperature 3-
6h cools to room temperature with the furnace later；
S7, gained cladding coating in step S6 is polished flat, completes cladding coating and prepares.
4. the preparation method of Ni-Ti-Nb Alloy by Laser cladding coating according to claim 3, which is characterized in that step S1
In, the selection of described material N i, Ti, Nb, with mass percent, Ni：44.3%-46.4%, Ti：46.4%-47.7%, it is remaining
Amount is Nb, and corresponding element elemental powders is taken to mix.
5. the preparation method of Ni-Ti-Nb Alloy by Laser cladding coating according to claim 3, which is characterized in that step S2
In, specific mixing step is：
By the raw material powder in step S1, it being put into ball grinder, compound rubber ball carries out ball milling in alcohol, ball milling 0.5-1h,
So that powder is sufficiently mixed uniformly.
6. the preparation method of Ni-Ti-Nb Alloy by Laser cladding coating according to claim 3, which is characterized in that step S3
In, specific drying steps are：
Mixed mixture in step S2, which is put into drying, drying process in drying box, to be carried out in vacuum drying chamber, done
The dry time is 1-2h, and 80-120 DEG C of temperature needs to wait for powder after drying completely and is cooled to room temperature completely, then taken from vacuum environment
Go out spare.
7. the preparation method of Ni-Ti-Nb Alloy by Laser cladding coating according to claim 3, which is characterized in that step S5
In, use argon gas as protection gas in cladding process.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950309A (en) * | 2018-09-10 | 2018-12-07 | 舞阳钢铁有限责任公司 | A method of improving austenite stainless steel composite board grain boundary corrosion performance |
| CN111979541A (en) * | 2020-08-21 | 2020-11-24 | 中南大学 | Titanium alloy with Ti-Nb alloy coating and preparation method and application thereof |
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| WO2007001392A3 (en) * | 2004-10-01 | 2007-05-18 | Univ Michigan State | Manufacture of shape-memory alloy cellular meterials and structures by transient-liquid reactive joining |
| CN104233281A (en) * | 2013-06-20 | 2014-12-24 | 沈阳大陆激光技术有限公司 | Cobalt base alloy powder for repairing supercharger nozzle ring of internal combustion engine |
| CN106929738A (en) * | 2017-04-13 | 2017-07-07 | 水利部杭州机械设计研究所 | A kind of Ni Ti Nb carbide composite coatings of anti-cavitation Anti-erosion high bond strength and preparation method thereof |
-
2018
- 2018-02-12 CN CN201810145869.3A patent/CN108359972A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007001392A3 (en) * | 2004-10-01 | 2007-05-18 | Univ Michigan State | Manufacture of shape-memory alloy cellular meterials and structures by transient-liquid reactive joining |
| CN104233281A (en) * | 2013-06-20 | 2014-12-24 | 沈阳大陆激光技术有限公司 | Cobalt base alloy powder for repairing supercharger nozzle ring of internal combustion engine |
| CN106929738A (en) * | 2017-04-13 | 2017-07-07 | 水利部杭州机械设计研究所 | A kind of Ni Ti Nb carbide composite coatings of anti-cavitation Anti-erosion high bond strength and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| YIMINGTIAN: ""Surface modification of TC4 Ti alloy by laser cladding with Ni-Ti-Nb powders"", 《MATEC WEB OF CONFERENCES》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950309A (en) * | 2018-09-10 | 2018-12-07 | 舞阳钢铁有限责任公司 | A method of improving austenite stainless steel composite board grain boundary corrosion performance |
| CN108950309B (en) * | 2018-09-10 | 2020-05-22 | 舞阳钢铁有限责任公司 | Method for improving grain boundary corrosion performance of austenitic stainless steel composite board |
| CN111979541A (en) * | 2020-08-21 | 2020-11-24 | 中南大学 | Titanium alloy with Ti-Nb alloy coating and preparation method and application thereof |
| CN111979541B (en) * | 2020-08-21 | 2022-09-27 | 中南大学 | Titanium alloy with Ti-Nb alloy coating and preparation method and application thereof |
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