CN107012460A - A kind of preparation method of Ni-based Amorphous Alloy Coating - Google Patents
A kind of preparation method of Ni-based Amorphous Alloy Coating Download PDFInfo
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- CN107012460A CN107012460A CN201710120282.2A CN201710120282A CN107012460A CN 107012460 A CN107012460 A CN 107012460A CN 201710120282 A CN201710120282 A CN 201710120282A CN 107012460 A CN107012460 A CN 107012460A
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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
- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/04—Amorphous alloys with nickel or cobalt as the major constituent
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Abstract
The invention belongs to amorphous coating field, mass percent is first 2% 5% gadolinium elemental powders by more particularly to a kind of preparation method of Ni-based Amorphous Alloy Coating, 3% 5% niobium elemental powders, 5% 15% boron elemental powders, 12% 15% elementary silicon powder, the cladding alloy powder of 31% 35% iron elemental powders and 30% 44%Ni elemental powders composition carry out mechanical ball mill, drying；Then synchronous powder feeding system laser melting and coating technique is utilized, the metal bath entered under argon gas protection under laser emission forms Ni-based amorphous cladding coating；Laser melting and coating technique technological parameter is, laser power is that 12 14kW, the 4mm of spot diameter 1, the 10m/min of sweep speed 7, protection argon flow amount are that 20 30L/min, powder sending quantity are 15 25g/min.This preparation technology efficiency high, energy consumption are low, and size tunable, composition adjustment is flexible；The amorphous coating hardness of formation is high.
Description
Technical field
The invention belongs to amorphous coating field, more particularly to a kind of preparation method of Ni-based Amorphous Alloy Coating.
Background technology
Compared with traditional crystal alloy material, block amorphous alloy material has fairly obvious in terms of multinomial performance
Advantage, main performance is as follows：(1) there is more excellent mechanical property, such as high-yield strength, big elastic strain limit, bend
Before clothes substantially completely elasticity, surrender when substantially completely plasticity, without processing hardening phenomenon, high fatigue resistance and high-wearing feature
Deng.With continuing to bring out for block amorphous alloys, the intensity of metal material is also constantly refreshed, Mg block amorphous alloys it is strong
Degree is from initial 600MPa, and the intensity for having developed into Cu-Fe-Ta-B alloys in current 800MPa, Cu based alloys reaches
5000MPa, creates Strength of Metallic Materials tidemark in nature.But non-crystaline amorphous metal needs are greatly cold to go speed, one
As coat processing method be difficult to meet.With the development of laser technology, laser power is increasing, the laser energy resulted in
Density also more and more higher, this prepares for the laser of amorphous alloy material and provides solid hardware guarantee.
Through the literature search discovery to prior art, it is Ni-based from molten that patent 201510028097.1 discloses a kind of thermal spraying
Alloy amorphous coating, is that nickel-based self-fluxing alloy is prepared as into spray coating powder, workpiece surface is sprayed on by the way of thermal spraying,
Form the nickel-based self-fluxing alloy amorphous coating.The alloy that such a method is used is Self-fusing powder, the low easy formation amorphous of fusing point,
List can cause the high easily failure of porosity.Patent 201510745939.5 disclose a kind of high thermal stability iron-based amorphous coating and its
Preparation method：Prime coat is prepared on base material by the way of nickel plucking or electric arc spraying Ni/Al, then using electric arc spray
It is coated on prime coat and deposits iron-based amorphous coating.Coating prepared by such a method is firmly combined with, but preparation process is complicated, cost
It is higher.So being badly in need of a kind of method for directly preparing high-performance amorphous alloy coating of exploitation at present.
The laser preparation method of the iron-based amorphous coating of patent 201010246236.6, is that cladding and remelting are combined, and this hair
Bright is direct cladding, simpler and conveniently.
The content of the invention
It is an object of the invention to provide a kind of preparation method of Ni-based Amorphous Alloy Coating, the preparation method need not be extra
Handling process auxiliary is obtained with the amorphous alloy coating of densification, and coating and basic interface bond strength are high, hardness
It is high.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of preparation method of Ni-based Amorphous Alloy Coating, its step includes,
(1) it is 2%-5% gadoliniums elemental powders, 3%-5% niobiums elemental powders, 5%-15% boron simple substance powder by mass percent
The cladding alloy at end, 12%-15% elementary silicons powder, 31%-35% iron elemental powders and 30%-44%Ni elemental powders composition
Powder carries out mechanical ball mill, drying；
It is preferred that, it is 2%-5% gadoliniums elemental powders, 3%-5% niobiums elemental powders, 10%-12% boron by mass percent
It is molten that elemental powders, 12%-15% elementary silicons powder, 33%-35% iron elemental powders and 30%-40%Ni elemental powders are constituted
Cover alloy powder and carry out mechanical ball mill, drying.
(2) synchronous powder feeding system laser melting and coating technique is utilized, the metal bath entered under argon gas protection under laser emission is formed
Ni-based amorphous cladding coating；
Laser melting and coating technique technological parameter is that laser power is 12-14kW, spot diameter 1-4mm, sweep speed 7-10m/
Min, protection argon flow amount are that 20-30L/min, powder sending quantity are 15-25g/min.
The rotating speed of the mechanical ball mill is 600 turns/min, and the spheroidal graphite time is 60 minutes.
The dry time is 45 minutes, and dry temperature is 150 DEG C.
The thickness of Ni-based amorphous cladding coating is 300-400 microns, and hardness is 800-1000HV0.2.If coat is too thick
Easily cause the defects such as cladding layer stomata, crackle；The cladding layer of the too thin preparation of coat probably due to it is too thin and without practical application
Value.
In the step (2), laser melting and coating technique technological parameter is that laser power is 12-13kW, spot diameter 1.5-
2mm, sweep speed 8-9m/min, protection argon flow amount are that 22L/min, powder sending quantity are 18g/min.
Compared with prior art, the beneficial effects of the present invention are：
(1) cladding powder is formed by elemental powders mechanical mixture, and technique is simple, and size tunable, composition adjustment is flexible；
(2) synchronous powder feeding system is coupled simultaneously with laser, makes full use of the high energy density characteristic of laser and radiating certainly for matrix
Feature, obtains big cooling velocity formation amorphous coating, efficiency high, energy consumption are low, step is few；
(3) coating and matrix are metallurgical bindings, and interface bond strength is high, and the hardness of coating is high, reaches 800-
1000HV0.2
(4) this method does not need additional processing technique auxiliary to be obtained with fine and close amorphous alloy coating；
(5) material in the present invention adds simple substance powder gadolinium, because rare earth element can refine cladding layer crystal grain, homogenization is molten
Coating alloy Elemental redistribution, and the big portion of the heat of mixing of rare earth element and other elements in alloy is negative, the addition of micro gadolinium can
Cause adhesion strong between the increase of constituent element number and each constituent element, can make occur stable short distance sequence structure in supercooled liquid region,
Suppress the forming core of crystal phase in noncrystal substrate and, with growing up, obtain the high coating of content of amorphous.
Brief description of the drawings
Fig. 1 be embodiment 1 in obtained cladding coating shape appearance figure.
Fig. 2 be embodiment 1-3 in cladding coating microhardness distribution figure.
Wherein, curve 1 refers to the microhardness distribution of the floating coat of embodiment 1 in figure；Curve 2 is referred in embodiment 2
The microhardness distribution of coating；Curve 3 refers to the microhardness distribution of the floating coat of embodiment 3.
Fig. 3 is the coating friction shape appearance figure of example 1.
Embodiment
With reference to embodiment, the invention will be further described：
Embodiment 1
The mass percent is taken to be：2% gadolinium, 3% niobium, 10% boron, 12% silicon, 33% iron, 40%Ni simple substance powder mixing, respectively
The granularity of powder is between 150-200 mesh；The elemental powders of mixing are carried out with mechanical ball mill, 600 turns/min of drum's speed of rotation,
Ball-milling Time is 60 minutes, is dried 45 minutes at a temperature of 150 DEG C after ball milling；Directly existed using synchronous powder feeding system laser melting and coating technique
Surface of low-alloy steel prepares Ni-based amorphous coating；Laser melting coating parameter is：Laser power is 12kW, spot diameter 1.5mm, scanning
Speed 8m/min, protection argon flow amount are that 22L/min, powder sending quantity are 18g/min；Cladding coating microhardness such as Fig. 1 of acquisition
Shown in middle curve 1.Shape appearance figure in the present embodiment as indicated with 1, occurs in that precipitation in coating most surface position as can be known from Fig. 1
Crystalline phase tissue, unobvious in secondary top layer crystalline phase tissue, this, which is due to that most top layer is different from the radiating condition on time top layer, determines.Apply
The friction pattern of layer is as shown in figure 3, can be shown in the friction type predominantly adhesive wear of the coating.
Embodiment 2
The mass percent is taken to be：3 gadoliniums, 3% niobium, 10% boron, 15 silicon, 34 iron, 35Ni simple substance powder mixing, of each powder
Granularity is between 150-200 mesh；Mechanical ball mill, 600 turns/min of drum's speed of rotation, Ball-milling Time are carried out to the elemental powders of mixing
For 60 minutes, dried 45 minutes at a temperature of 150 DEG C after ball milling；Using synchronous powder feeding system laser melting and coating technique directly in low-alloy steel
Surface prepares Ni-based amorphous coating；Laser melting coating parameter is：Laser power is 13kW, spot diameter 2mm, sweep speed 9m/
Min, protection argon flow amount are that 22L/min, powder sending quantity are 18g/min；Curve 2 in the cladding coating microhardness such as Fig. 1 of acquisition
It is shown.
Embodiment 3
The mass percent is taken to be：4 gadoliniums, 5% niobium, 12% boron, 14% silicon, 35 iron, 30Ni simple substance powder mixing, each powder
Granularity is between 150-200 mesh；Mechanical ball mill, 600 turns/min of drum's speed of rotation, during ball milling are carried out to the elemental powders of mixing
Between be 60 minutes, after ball milling at a temperature of 150 DEG C dry 45 minutes；Using synchronous powder feeding system laser melting and coating technique directly in low-alloy
Steel surface prepares Ni-based amorphous coating；Laser melting coating parameter is：Laser power is 12kW, spot diameter 1.5mm, sweep speed
8m/min, protection argon flow amount are that 22L/min, powder sending quantity are 18g/min；It is bent in the cladding coating microhardness such as Fig. 1 of acquisition
Shown in line 3.
In summary, cladding coating material manufactured in the present embodiment has very high rigidity, has reached 1200HV or so, its
The average hardness highest that the middle floating coat of example 1 is obtained, it is optimal proportion to illustrate its formula rate.
It is described above be presently preferred embodiments of the present invention, but the present invention should not be limited to disclosed in the embodiment
Content.So every do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, the model that the present invention is protected is both fallen within
Enclose.
Claims (5)
1. a kind of preparation method of Ni-based Amorphous Alloy Coating, its step includes,
(1) by mass percent be 2%-5% gadoliniums elemental powders, 3%-5% niobiums elemental powders, 5%-15% boron elemental powders,
The cladding alloyed powder of 12%-15% elementary silicons powder, 31%-35% iron elemental powders and 30%-44%Ni elemental powders composition
End carries out mechanical ball mill, drying；
(2) synchronous powder feeding system laser melting and coating technique is utilized, the metal bath entered under argon gas protection under laser emission is formed Ni-based
Amorphous cladding coating；
Laser melting and coating technique technological parameter is, laser power be 12-14kW, spot diameter 1-4mm, sweep speed 7-10m/min,
Protection argon flow amount is that 20-30L/min, powder sending quantity are 15-25g/min.
2. the preparation method of Ni-based Amorphous Alloy Coating according to claim 1, it is characterised in that in the step (1),
The rotating speed of mechanical ball mill is 600 turns/min, and the spheroidal graphite time is 60 minutes.
3. the preparation method of Ni-based Amorphous Alloy Coating according to claim 1, it is characterised in that in the step (1),
The dry time is 45 minutes, and dry temperature is 150 DEG C.
4. the preparation method of Ni-based Amorphous Alloy Coating according to claim 1, it is characterised in that in the step (2),
The thickness of Ni-based amorphous cladding coating is 300-400 microns, and hardness is 800-1000HV0.2.
5. the preparation method of Ni-based Amorphous Alloy Coating according to claim 1, it is characterised in that in the step (2),
Laser melting and coating technique technological parameter is that laser power is 12-13kW, spot diameter 1.5-2mm, sweep speed 8-9m/min, guarantor
Shield argon flow amount is that 22L/min, powder sending quantity are 18g/min.
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| CN201710120282.2A CN107012460A (en) | 2017-03-02 | 2017-03-02 | A kind of preparation method of Ni-based Amorphous Alloy Coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108441859A (en) * | 2018-06-15 | 2018-08-24 | 北京工业大学 | Enhance wear-resisting laser cladding coating of Ni bases and preparation method thereof using Nb elements |
| CN110257814A (en) * | 2019-06-04 | 2019-09-20 | 中国船舶重工集团公司第七二五研究所 | A kind of metal oxide anode preparation method based on mechanical ball mill paint-on technique |
| CN113684429A (en) * | 2021-07-13 | 2021-11-23 | 江苏大学 | Ni-Nb amorphous/nanocrystalline composite coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108441859A (en) * | 2018-06-15 | 2018-08-24 | 北京工业大学 | Enhance wear-resisting laser cladding coating of Ni bases and preparation method thereof using Nb elements |
| CN110257814A (en) * | 2019-06-04 | 2019-09-20 | 中国船舶重工集团公司第七二五研究所 | A kind of metal oxide anode preparation method based on mechanical ball mill paint-on technique |
| CN113684429A (en) * | 2021-07-13 | 2021-11-23 | 江苏大学 | Ni-Nb amorphous/nanocrystalline composite coating |
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