CN108247042A - Ni packets Al cladding Fe base noncrystal alloy composite powders and its preparation method and application - Google Patents
Ni packets Al cladding Fe base noncrystal alloy composite powders and its preparation method and application Download PDFInfo
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- CN108247042A CN108247042A CN201810079700.2A CN201810079700A CN108247042A CN 108247042 A CN108247042 A CN 108247042A CN 201810079700 A CN201810079700 A CN 201810079700A CN 108247042 A CN108247042 A CN 108247042A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/17—Metallic particles coated with metal
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Abstract
The invention discloses a kind of Ni packets Al to coat Fe base noncrystal alloy composite powders, which is made of Fe based amorphous alloy powders kernel and the Ni packet Al powder housings being coated on outside Fe based amorphous alloy powder kernels.The invention also discloses a kind of preparation method of Ni packets Al cladding Fe base noncrystal alloy composite powders, Fe based amorphous alloy powders and Ni packet Al powder are carried out ball-milling treatment and obtain composite powder by this method.The invention also discloses a kind of methods for carrying out plasma spraying prepares coating using Ni packets Al cladding Fe base noncrystal alloys composite powders.The composite powder structure of the present invention is relatively stable, improves the molten state of Fe base noncrystal alloys and flattening ability, improves the combination between Fe based amorphous alloy powders.The preparation method of the present invention improves the uniformity of composite powder.Coating structure prepared by the present invention is fine and close, and porosity is low, and corrosion resistance is strong.
Description
Technical field
The invention belongs to surfacing preparing technical fields, and in particular to a kind of Ni packets Al claddings Fe base noncrystal alloys are compound
Powder and its preparation method and application.
Background technology
Fe base noncrystal alloys are a kind of alloys with non crystalline structure, thermodynamically in metastable state, are had excellent
Mechanical property, magnetic performance and corrosion resistance.Using the Fe base amorphous alloy coatings that plasma spraying method is prepared because
Its unique structure phase and with high intensity, hardness and corrosion resistance, get the attention.However in Plasma Spraying Process Using
In, since flattening ability of the Fe based amorphous alloy powder particles on matrix is limited, Fe based amorphous alloy powders particle it
Between mutually nested superposition, accumulation forms the layer structure containing hole, and the porosity of coating increases.And in coating layer structure
Hole forms etching channels, greatly reduces the corrosion resistance of Fe base amorphous alloy coatings, has seriously affected Fe base amorphous
The application of alloy coat.
Often through the jet velocity for improving powder particle in plasma spraying technology, the temperature of spraying matrix is improved to change
The heated and molten state of kind powder particle, the methods of reducing effect of the ambiance to high-temperature injection particle, reduce coating
Porosity.But these methods can promote Fe base noncrystal alloys to be changed from metastable state to stable state, the Fe base amorphous resulted in
Content of amorphous significantly reduces in alloy coat, further reduces the corrosion resistance of Fe base amorphous alloy coatings.There is research by Fe
The composite powder formed after based amorphous alloy powder and other powder mechanical mixtures forms composite coating by plasma spraying, but
Fe based amorphous alloy powders and other powder are non-uniform mixing in composite powder, easy oxidation and decarbonization inside composite coating, sternly
The performance of composite coating is affected again.
Invention content
The technical problems to be solved by the invention are in view of the above shortcomings of the prior art, to provide a kind of Ni packets Al packets
Cover Fe base noncrystal alloy composite powders.The composite powder is by Fe based amorphous alloy powders kernel and is coated on Fe base noncrystal alloy powder
Ni packet Al powder housing composition outside last kernel, structure is relatively stable, improves the molten state of Fe base noncrystal alloys and sprawls
Deformability improves the combination between Fe based amorphous alloy powders.
In order to solve the above technical problems, the technical solution adopted by the present invention is：Ni packets Al cladding Fe base noncrystal alloys are compound
Powder, which is characterized in that the composite powder is by Fe based amorphous alloy powders kernel and is coated on Fe based amorphous alloy powder kernels
Outer Ni packet Al powder housing forms, and the mass content of Ni packet Al powder is 5%~20%, Fe base amorphous in the composite powder
The mass content of alloy powder is 80%~95%.
Above-mentioned Ni packets Al cladding Fe base noncrystal alloy composite powders, which is characterized in that the ingredient of the Ni packets Al powder
For Ni90Al10, grain size is 1 μm~30 μm；The ingredient of the Fe based amorphous alloy powders is
Fe62.8Ni13.6Cr9.9Mo8.6Si1.9C2.3B0.9, grain size is 15 μm~50 μm.
In addition, the present invention also provides a kind of preparation method of Ni packets Al cladding Fe base noncrystal alloy composite powders, it is special
Sign is that the detailed process of this method is as follows：Ni packet Al powder and Fe based amorphous alloy powders are dried respectively, then mixed
Conjunction is formed uniformly mixed-powder, then the mixed-powder is placed in planetary ball mill and carries out ball-milling treatment, obtains Ni packets Al
Coat Fe base noncrystal alloy composite powders.
Above-mentioned method, which is characterized in that the abrading-ball that the ball-milling treatment uses is the 316 of diameter 8mm and diameter 12mm
The mass ratio of stainless steel ball, 316 stainless steel balls of the diameter 8mm and 316 stainless steel balls of diameter 12mm is 2:1, the ball
The MC high abrasion-resistance nylon tanks that the ball grinder that mill processing uses is 100mL for volume.
Above-mentioned method, which is characterized in that the mass ratio of abrading-ball and mixed-powder is 10 during the ball-milling treatment:
1~15:1.
Above-mentioned method, which is characterized in that the rotating speed of the ball-milling treatment is 120r/min~240r/min, time 3h
~4h, during the ball-milling treatment per ball milling 30min after rest 5min.
The present invention also provides it is a kind of using Ni packets Al cladding Fe base noncrystal alloy composite powder prepares coatings method,
It is characterized in that, this method includes the following steps：
Step 1: Ni packets Al cladding Fe base noncrystal alloy composite powders are dried；
Step 2: matrix is first polished with sand paper, then cleaned with absolute ethyl alcohol or acetone, then carry out blasting treatment, make
The roughness Ra of matrix surface is 9.6 μm~12 μm；The material of described matrix is steel；
Step 3: the Ni packets Al cladding Fe base noncrystal alloys in step 1 after drying are answered using plasma spray coating process
The surface of the matrix in powder spray to step 2 after blasting treatment is closed, obtains Ni packets Al cladding Fe base amorphous alloy coatings；
Cooling processing is carried out to the matrix back side using the pressure-air of air compressor machine compression in the spraying process.
Above-mentioned method, which is characterized in that the parameter of plasma spray coating process described in step 3 is：Arc voltage 50V,
Arc current 600A, argon flow amount 80L/min, hydrogen flowing quantity 6L/min, plasma gun movement speed 30mm/s, spraying
Distance 110mm.
Above-mentioned method, which is characterized in that the thickness of Ni packets Al cladding Fe base amorphous alloy coatings obtained in step 3
It is 240 μm~600 μm.
Compared with the prior art, the present invention has the following advantages：
1st, Ni packets Al claddings Fe base noncrystal alloys composite powder of the present invention by Fe based amorphous alloy powders kernel and is coated on
Ni packet Al powder housing composition outside Fe based amorphous alloy powder kernels, since Ni packet Al powder and Fe based amorphous alloy powders have
There is strong wetting characteristics, the Ni packets Al cladding Fe based amorphous alloy powder structures that the two is formed are relatively stable, it is not easy to come off
And deformation, when thermit reaction occurs for the Ni packet Al housings of Ni packets Al cladding Fe based amorphous alloy powder outer layers, the heat of releasing promotees
It is melted into Fe based amorphous alloy powders, and improves its molten state and the flattening ability on matrix, promote Fe bases
Microcell metallurgical binding is formed between amorphous powdered alloy, so as to improve the combination between Fe based amorphous alloy powders.
2nd, the present invention is come by the way that Ni packets Al is controlled to coat the addition of Ni packet Al powder in Fe base noncrystal alloy composite powders
The releasing heat of thermit reaction is controlled, reduces the transformation that high temperature makes Fe base noncrystal alloys from metastable state to stable state, so as to avoid
Significantly reducing for Fe base content of amorphous ensure that the performance of Ni packets Al cladding Fe based amorphous alloy powders is stablized.
3rd, Ni packet Al powder and Fe based amorphous alloy powders are carried out ball-milling treatment by the present invention after mixing, make Ni packets Al
Powder is uniformly distributed and is coated on around Fe based amorphous alloy powder particles, has obtained Ni packets Al cladding Fe base noncrystal alloys and has answered
Powder is closed, while ensure that the amorphous stable state of Fe based amorphous alloy powders, is simple and efficient.
4th, the present invention coats Fe based amorphous alloy powder prepares coatings using Ni packet Al powder, and aluminothermy occurs for Ni packet Al powder
React the intermetallic compound Ni of generation3The hole neutralization that Al and NiAl is filled in Ni packets Al cladding Fe base amorphous alloy coatings is split
At line, the compactness of coating structure is improved, further reduced the porosity of composite coating, enhances Ni packets Al cladding Fe bases
The corrosion resistance of amorphous alloy coating.
5th, the present invention coats Fe based amorphous alloy powder prepares coatings using Ni packet Al powder, and it is coated to avoid plasma spray
Lead to the oxidation and decarburization phenomenon that Fe based amorphous alloy powders occur in coating in journey since temperature is excessively high, improve the whole of coating
Body performance.
6th, the present invention prepares Ni packets Al cladding Fe base amorphous alloy coatings by plasma spraying, Ni packets Al in spraying process
Microcell metallurgical binding, the composite coating inside of preparation and coating and matrix are also formed between powder and Fe based amorphous alloy powders
Between combination it is more close, the overall performance of coating is further promoted, and service life extends.
7th, the Ni elements in the Ni packets Al cladding Fe base amorphous alloy coatings that the present invention obtains being capable of shape in corrosion process
Into fine and close passivating film is stablized, and be coated on the surface of coating, the corrosion rate of composite coating is reduced, further improves painting
The corrosion resistance of layer.
The present invention is described in further detail with reference to the accompanying drawings and examples.
Description of the drawings
Fig. 1 a are the SEM figures of the Fe based amorphous alloy powders of the embodiment of the present invention 1.
Fig. 1 b are the SEM figures of the Ni packet Al powder of the embodiment of the present invention 1.
Fig. 2 a are the XRD diagram of the Fe based amorphous alloy powders of the embodiment of the present invention 1.
Fig. 2 b are the XRD diagram of the Ni packet Al powder of the embodiment of the present invention 1.
Fig. 3 a are the whole SEM of Ni packets Al cladding Fe base noncrystal alloy composite powders that the embodiment of the present invention 1 is prepared
Figure.
Fig. 3 b are the section SEM of Ni packets Al cladding Fe base noncrystal alloy composite powders that the embodiment of the present invention 1 is prepared
Figure.
Fig. 4 a are the low power Cross Section Morphologies of Ni packets Al cladding Fe base amorphous alloy coatings that the embodiment of the present invention 5 is prepared
SEM schemes.
Fig. 4 b are the high power Cross Section Morphologies of Ni packets Al cladding Fe base amorphous alloy coatings that the embodiment of the present invention 5 is prepared
SEM schemes.
Fig. 5 a are the section SEM figures of Ni packets Al cladding Fe base amorphous alloy coatings that the embodiment of the present invention 5 is prepared.
Fig. 5 b are the EDS collection of illustrative plates of greyish black color substance 1 in Fig. 5 a.
Fig. 5 c are the EDS collection of illustrative plates of greyish white color substance 2 in Fig. 5 a.
Fig. 6 is the TEM figures of Ni packets Al cladding Fe base amorphous alloy coatings that the embodiment of the present invention 5 is prepared.
Fig. 7 a are the low power Cross Section Morphology SEM figures for the Fe base amorphous alloy coatings that comparative example 1 of the present invention is prepared.
Fig. 7 b are the high power Cross Section Morphology SEM figures for the Fe base amorphous alloy coatings that comparative example 1 of the present invention is prepared.
Fig. 8 is that the Ni packets Al cladding Fe base amorphous alloy coatings that the embodiment of the present invention 5 is prepared and comparative example 1 are prepared into
The XRD spectrum of Fe base amorphous alloy coatings arrived.
Fig. 9 is that the Ni packets Al cladding Fe base amorphous alloy coatings that the embodiment of the present invention 5 is prepared and comparative example 1 are prepared into
The polarization curve of Fe base amorphous alloy coatings arrived.
Figure 10 a are that the Ni packets Al that the embodiment of the present invention 5 is prepared coats Fe base amorphous alloy coatings after corrosion test
SEM spectrum.
Figure 10 b are the SEM spectrum of Fe base amorphous alloy coatings that comparative example 1 of the present invention is prepared after corrosion test.
Specific embodiment
Ni packets Al claddings Fe base noncrystal alloy composite powders of the present invention and preparation method thereof pass through 1~embodiment of embodiment 4
It is described in detail.
Embodiment 1
The Ni packets Al of the present embodiment coats Fe base noncrystal alloys composite powder by Fe based amorphous alloy powders kernel and cladding
Ni packet Al powder housing outside Fe based amorphous alloy powder kernels forms, and the ingredient of Ni packet Al powder is in the composite powder
Ni90Al10, grain size is 1 μm~30 μm, mass content 5%, and the ingredient of Fe based amorphous alloy powders is
Fe62.8Ni13.6Cr9.9Mo8.6Si1.9C2.3B0.9, grain size is 15 μm~50 μm, mass content 95%.
The preparation method of the Ni packets Al cladding Fe base noncrystal alloy composite powders of the present embodiment, detailed process are as follows：By Ni
Al powder and Fe the based amorphous alloy powders dry 3h under conditions of 80 DEG C respectively are wrapped, then weighs 1g Ni packet Al powder and 19g
Fe based amorphous alloy powders are uniformly mixed to form mixed-powder；The 316 stainless steel abrading-balls of diameter 8mm and diameter 12mm are existed respectively
4h is dried under conditions of 150 DEG C, then weigh 134g diameters 8mm 316 stainless steel abrading-balls and 66g diameters 12mm it is 316 stainless
Steel abrading-ball is uniformly mixed, and forms mixed grinding ball；The mixed-powder and mixed grinding ball are placed in the MC high abrasion-resistance nylon tanks of 100mL
In, it is with sealing ring and lid that MC high abrasion-resistance nylon covers is tight, it is then fitted into planetary ball mill, is 240r/ in rotating speed
Ball-milling treatment 3h under conditions of min treats that MC high abrasion-resistance nylon tank temperature is restored to room temperature to further take out after ball milling, obtains Ni packets
Al coats Fe base noncrystal alloy composite powders；During the ball-milling treatment per ball milling 30min after rest 5min.
Fig. 1 a are the shape appearance figures of the Fe based amorphous alloy powders of the present embodiment, the Fe of the present embodiment it can be seen from Fig. 1 a
Based amorphous alloy powder is smooth for spherical and surface, and particle size range is 15 μm~50 μm.
Fig. 1 b are the shape appearance figures of the Ni packet Al powder of the present embodiment, the Ni packet Al powder of the present embodiment it can be seen from Fig. 1 b
The granularity at end is 1 μm~30 μm.
Fig. 2 a are the XRD diagram of the Fe based amorphous alloy powders of the present embodiment, the Fe bases of the present embodiment it can be seen from Fig. 2 a
Amorphous powdered alloy is to occur diffusing scattering peak at 2 θ (°)=45 °, while containing crystallization peak in powder in the angle of diffraction, non-after measured
Crystal content is 51.3%, and it is the amorphous powdered alloy for being mingled with Crystallization Phases to show powder.
Fig. 2 b are the XRD diagram of the Ni packet Al powder of the present embodiment, the Ni packet Al powder of the present embodiment it can be seen from Fig. 2 b
For Ni Crystallization Phases and the powder of Al crystallization phase compositions.
Fig. 3 a are the whole pattern SEM of Ni packets Al cladding Fe base noncrystal alloy composite powders that the present embodiment is prepared
Figure can be seen that the Ni packets Al that the present embodiment is prepared from Fig. 3 a and coat the rough of Fe based amorphous alloy powders, but
Good spherical state is still maintained, and has good mobility.
Fig. 3 b are the Cross Section Morphology SEM of Ni packets Al cladding Fe base noncrystal alloy composite powders that the present embodiment is prepared
Scheme, in the Ni packets Al cladding Fe base noncrystal alloy composite powders that can be seen that the present embodiment is prepared from Fig. 3 b, Ni packet Al powder
End is coated on the surface of Fe base noncrystal alloys, and clad is complete but not uniform enough, and the thickness of clad is 1 μm~3 μm.
Ni packets Al coats the energy spectrum analysis element in Fe base noncrystal alloy composite powder surfaces and section in Fig. 3 a and in Fig. 3 b
Content distribution result is as shown in table 1 below.
The Ni packets Al cladding Fe base noncrystal alloy composite powders surface that 1 embodiment 1 of table is prepared
And section energy spectrum analysis the content distribution of elements result
The Ni packets Al cladding Fe bases that the present embodiment is prepared it can be seen from surface-element weight percent in table 1 are non-
Peritectic alloy composite powder surface is made of substantially Ni and Al elements, and containing a small amount of Fe and other elements, shows that Ni packets Al is coated
Fe base noncrystal alloy composite powders outer shell is mainly made of Ni packets Al, it can be seen from 1 middle section element weight percent of table
The Ni packets Al cladding Fe based amorphous alloy powders section that the present embodiment is prepared mainly is made of Fe and other elements, is not contained
Al elements show that Ni packets Al cladding Fe base noncrystal alloy composite powders cores are mainly made of Fe base noncrystal alloy particles.
Embodiment 2
The Ni packets Al of the present embodiment coats Fe base noncrystal alloys composite powder by Fe based amorphous alloy powders kernel and cladding
Ni packet Al powder housing outside Fe based amorphous alloy powder kernels forms, and the ingredient of Ni packet Al powder is in the composite powder
Ni90Al10, grain size is 1 μm~30 μm, mass content 10%, and the ingredient of Fe based amorphous alloy powders is
Fe62.8Ni13.6Cr9.9Mo8.6Si1.9C2.3B0.9, grain size is 15 μm~50 μm, mass content 90%.
The preparation method of the Ni packets Al cladding Fe base noncrystal alloy composite powders of the present embodiment, detailed process are as follows：By Ni
Al powder and Fe the based amorphous alloy powders dry 3h under conditions of 80 DEG C respectively are wrapped, then weighs 2g Ni packet Al powder and 18g
Fe based amorphous alloy powders are uniformly mixed to form mixed-powder；The 316 stainless steel abrading-balls of diameter 8mm and diameter 12mm are existed respectively
4h is dried under conditions of 150 DEG C, then weigh 134g diameters 8mm 316 stainless steel abrading-balls and 66g diameters 12mm it is 316 stainless
Steel abrading-ball is uniformly mixed, and forms mixed grinding ball；The mixed-powder and mixed grinding ball are placed in the MC high abrasion-resistance nylon tanks of 100mL
In, it is with sealing ring and lid that MC high abrasion-resistance nylon covers is tight, it is then fitted into planetary ball mill, is 120r/ in rotating speed
Ball-milling treatment 4h under conditions of min treats that MC high abrasion-resistance nylon tank temperature is restored to room temperature to further take out after ball milling, obtains Ni packets
Al coats Fe base noncrystal alloy composite powders；During the ball-milling treatment per ball milling 30min after rest 5min.
Embodiment 3
The Ni packets Al of the present embodiment coats Fe base noncrystal alloys composite powder by Fe based amorphous alloy powders kernel and cladding
Ni packet Al powder housing outside Fe based amorphous alloy powder kernels forms, and the ingredient of Ni packet Al powder is in the composite powder
Ni90Al10, grain size is 1 μm~30 μm, mass content 15%, and the ingredient of Fe based amorphous alloy powders is
Fe62.8Ni13.6Cr9.9Mo8.6Si1.9C2.3B0.9, grain size is 15 μm~50 μm, mass content 85%.
The preparation method of the Ni packets Al cladding Fe base noncrystal alloy composite powders of the present embodiment, detailed process are as follows：By Ni
Al powder and Fe the based amorphous alloy powders dry 3h under conditions of 80 DEG C respectively are wrapped, then weighs 3g Ni packet Al powder and 17g
Fe based amorphous alloy powders are uniformly mixed to form mixed-powder；The 316 stainless steel abrading-balls of diameter 8mm and diameter 12mm are existed respectively
4h is dried under conditions of 150 DEG C, then weigh 160g diameters 8mm 316 stainless steel abrading-balls and 80g diameters 12mm it is 316 stainless
Steel abrading-ball is uniformly mixed, and forms mixed grinding ball；The mixed-powder and mixed grinding ball are placed in the MC high abrasion-resistance nylon tanks of 100mL
In, it is with sealing ring and lid that MC high abrasion-resistance nylon covers is tight, it is then fitted into planetary ball mill, is 180r/ in rotating speed
Ball-milling treatment 3.5h under conditions of min treats that MC high abrasion-resistance nylon tank temperature is restored to room temperature to further take out after ball milling, obtains Ni
Wrap Al cladding Fe base noncrystal alloy composite powders；During the ball-milling treatment per ball milling 30min after rest 5min.
Embodiment 4
The Ni packets Al of the present embodiment coats Fe base noncrystal alloys composite powder by Fe based amorphous alloy powders kernel and cladding
Ni packet Al powder housing outside Fe based amorphous alloy powder kernels forms, and the ingredient of Ni packet Al powder is in the composite powder
Ni90Al10, grain size is 1 μm~30 μm, mass content 20%, and the ingredient of Fe based amorphous alloy powders is
Fe62.8Ni13.6Cr9.9Mo8.6Si1.9C2.3B0.9, grain size is 15 μm~50 μm, mass content 80%.
The preparation method of the Ni packets Al cladding Fe base noncrystal alloy composite powders of the present embodiment, detailed process are as follows：By Ni
Al powder and Fe the based amorphous alloy powders dry 3h under conditions of 80 DEG C respectively are wrapped, then weighs 4g Ni packet Al powder and 16g
Fe based amorphous alloy powders are uniformly mixed to form mixed-powder；The 316 stainless steel abrading-balls of diameter 8mm and diameter 12mm are existed respectively
4h is dried under conditions of 150 DEG C, then weigh 200g diameters 8mm 316 stainless steel abrading-balls and 100g diameters 12mm it is 316 stainless
Steel abrading-ball is uniformly mixed, and forms mixed grinding ball；The mixed-powder and mixed grinding ball are placed in the MC high abrasion-resistance nylon tanks of 100mL
In, it is with sealing ring and lid that MC high abrasion-resistance nylon covers is tight, it is then fitted into planetary ball mill, is 240r/ in rotating speed
Ball-milling treatment 4h under conditions of min treats that MC high abrasion-resistance nylon tank temperature is restored to room temperature to further take out after ball milling, obtains Ni packets
Al coats Fe base noncrystal alloy composite powders；During the ball-milling treatment per ball milling 30min after rest 5min.
The present invention passes through embodiment 5~reality using the method for Ni packets Al cladding Fe base noncrystal alloy composite powder prepares coatings
It applies example 8 to be described in detail, the Ni packets Al cladding Fe bases wherein applied in embodiment 5, embodiment 6, embodiment 7 and embodiment 8
Non-crystaline amorphous metal composite powder corresponds to is prepared by embodiment 1, embodiment 2, embodiment 3 and embodiment 4 respectively
Embodiment 5
The present embodiment it is a kind of using Ni packets Al cladding Fe base noncrystal alloy composite powder prepares coatings method include with
Lower step：
Step 1: Ni packets Al is coated into Fe base noncrystal alloys composite powder dry 3h under conditions of 80 DEG C；
Step 2: 45# steel first is removed surface rusty stain with the polishing of 800# sand paper, then surface dirt is removed with washes of absolute alcohol
Then stain and organic matter carry out blasting treatment, the roughness Ra for making 45# steel matrix surface is 10.8 μm；
Step 3: the Ni packets Al cladding Fe base noncrystal alloys in step 1 after drying are answered using plasma spray coating process
The surface of the 45# steel in powder spray to step 2 after blasting treatment is closed, the Ni packets Al that thickness is 300 μm is obtained and coats Fe bases
Amorphous alloy coating；Cooling processing is carried out to 45# steel backs face using the pressure-air of air compressor machine compression in the spraying process；Institute
The parameter for stating plasma spray coating process is：Arc voltage 50V, arc current 600A, argon flow amount 80L/min, hydrogen flowing quantity
For 6L/min, plasma gun movement speed 30mm/s, spray distance 110mm.
Fig. 4 a are the low power Cross Section Morphology SEM of Ni packets Al cladding Fe base amorphous alloy coatings that the present embodiment is prepared
Figure can be seen that the Ni packets Al cladding Fe base amorphous alloy coating compact structures that the present embodiment is prepared, with matrix from Fig. 4 a
It is well combined.
Fig. 4 b are the high power Cross Section Morphology SEM of Ni packets Al cladding Fe base amorphous alloy coatings that the present embodiment is prepared
Figure, it is seen from fig. 4b that the Ni packets Al cladding Fe base amorphous alloy coatings that the present embodiment is prepared are typical stratiform knot
Structure is well combined between layers, not molten particle and micro-crack negligible amounts in coating, and coating has good consistency,
Coating porosity is 1.02% after measured.
Fig. 5 a are that the section SEM of Ni packets Al cladding Fe base amorphous alloy coatings that the present embodiment is prepared schemes, this implementation
The Ni packets Al cladding Fe base amorphous alloy coating compact structures that example is prepared, coating is greyish black color substance 1 and greyish white color substance 2
The layer structure of composition wherein greyish white color substance 2 surrounds greyish black color substance 1, is combined closely between layers.
Fig. 5 b are the EDS collection of illustrative plates of greyish black color substance 1 in Fig. 5 a, and each element content distribution result is such as in the greyish black color substance 1
Shown in the following table 2.
Grey black object in Ni packets Al cladding Fe base amorphous alloy coatings is prepared in 2 embodiment 5 of table
Each element content distribution result in matter 1
With reference to Fig. 5 b and table 2 as can be seen that ash in Ni packets Al cladding Fe base amorphous alloy coatings is prepared in the present embodiment
Atrament 1 is made of substantially Fe, Cr and Si element, and the main component for showing greyish black color substance 1 is Fe base alloy materials.
Fig. 5 c are the EDS collection of illustrative plates of greyish white color substance 2 in Fig. 5 a, and each element content distribution result is such as in the greyish white color substance 2
Shown in the following table 3.
Canescence object in Ni packets Al cladding Fe base amorphous alloy coatings is prepared in 3 embodiment 5 of table
Each element content distribution result in matter 2
With reference to Fig. 5 c and table 3 as can be seen that ash in Ni packets Al cladding Fe base amorphous alloy coatings is prepared in the present embodiment
Whiteness 2 is mainly Ni sills, and Ni based material layers tightly surround Fe based material layers, reaches microcell metallurgy between layers
With reference to other elements are disperseed wherein.
Fig. 6 is the TEM figures of Ni packets Al cladding Fe base amorphous alloy coatings that the present embodiment is prepared, can from Fig. 6
Go out, the Ni packets Al cladding Fe base amorphous alloy coatings of the present embodiment are made of amorphous phase and Crystallization Phases two parts, upper left corner amorphous
Mutually part is chosen diffracted electrons style and is shown there are amorphous phase in coating, and the main phase structure that amorphous phase is coating；The lower right corner
Crystallization Phases part selection electron diffraction pattern shows the Crystallization Phases crystallite dimension very little in coating, essentially nanocrystalline.
Comparative example 1
A kind of method using Fe based amorphous alloy powder prepares coatings of this comparative example includes the following steps：
Step 1: Fe based amorphous alloy powders are dried into 3h under conditions of 80 DEG C；
Step 2: 45# steel first is removed surface rusty stain with the polishing of 800# sand paper, then surface dirt is removed with washes of absolute alcohol
Then stain and organic matter carry out blasting treatment, the roughness Ra for making 45# steel surfaces is 10.8 μm；
Step 3: the Fe based amorphous alloy powders in step 1 after drying are sprayed to by step using plasma spray coating process
The surface of 45# steel in rapid two after blasting treatment obtains the Fe base amorphous alloy coatings that thickness is 300 μm；It is described spray coated
Cooling processing is carried out to 45# steel backs face using the pressure-air of air compressor machine compression in journey；The parameter of the plasma spray coating process
For：Arc voltage 50V, arc current 600A, argon flow amount 80L/min, hydrogen flowing quantity 6L/min, plasma gun movement
Speed 30mm/s, spray distance 110mm.
Fig. 7 a are the low power Cross Section Morphology SEM figures for the Fe base amorphous alloy coatings that this comparative example is prepared, can from Fig. 7 a
To find out, the Fe base amorphous alloy coatings of Ni packet Al powder preparation are not added with there are apparent porosity defects, coating structure will not
Close, there are apparent interfaces with matrix for coating, and it is bad to show that coating is combined with matrix.
Fig. 7 b are the high power Cross Section Morphology SEM figures for the Fe base amorphous alloy coatings that this comparative example is prepared, can by Fig. 7 b
To find out, be not added with the Fe base amorphous alloy coatings of Ni packet Al powder preparation there is do not melt largely particle, crackle and size compared with
Macrovoid defect, coating overall structure is not fine and close, and coating porosity is 6.69% after measured.
Fig. 8 is the Ni packets Al cladding Fe base amorphous alloy coatings that embodiment 1 is prepared and the Fe that comparative example 1 is prepared
The XRD spectrum of base amorphous alloy coating, scanning angle is 2 (θ)=20 °~90 °, from figure 8, it is seen that Ni packets Al coats Fe bases
Amorphous alloy coating is different from the Crystallization Phases type of Fe base amorphous alloy coatings, in Ni packets Al cladding Fe base amorphous alloy coatings
Ni, Al element are with Ni3Al forms exist, and illustrate that thermit reaction has occurred in Ni packet Al powder in Plasma Spraying Process Using, therefore
Ni packets Al is coated to be combined closely between Fe base noncrystal alloys composite powder and 45# steel matrix, so as to which generating structure is fine and close
Ni packets Al cladding Fe base amorphous alloy coatings, improve the corrosion resistance of coating；And Ni packets Al cladding Fe base noncrystal alloys
Coating differs smaller with the content of amorphous of Fe base amorphous alloy coatings, illustrates that Plasma Spraying Process Using Ni packets Al coats Fe base amorphous
Alloy composite powder is quickly cooled down after by thermosetting coating, and avoiding high temperature makes Fe base noncrystal alloys turn from metastable state to stable state
Become and the oxidation and decarburization of Fe based amorphous alloy powders, significantly reduce, protect so as to avoid Fe bases content of amorphous in coating
The corrosion resistance of Ni packets Al cladding Fe base amorphous alloy coatings is demonstrate,proved.
By the Ni packets Al cladding Fe base amorphous alloy coatings that embodiment 1 is prepared and the Fe bases that comparative example 1 is prepared
Amorphous alloy coating carries out corrosion resistance measurement respectively, and assay method is electrochemical erosion method, and specific continuous mode is：Using
Three electrode test system of ZAHNER IM6e types, wherein using the calomel electrode of saturation as reference electrode, the platinized platinum of 1cm × 1cm is
Auxiliary electrode using the NaCl solution of 3.5wt% as corrosive medium, is carried out conducting wire and the specimen surface for being not involved in testing with paraffin
Sealing is left 1cm × 1cm exposed regions and carries out electro-chemical test, the polarization curve of each coating is measured using dynamic potential scanning, if
Sweep speed is put as 5mV/min, surveying range is -1V~1V, by sample after NaCl solution impregnates 5min, treats corrosion current
Start to measure when stablizing, corrosion current density is obtained by Tafel linear extrapolations method, the results are shown in Figure 9.
Fig. 9 is the Ni packets Al cladding Fe base amorphous alloy coatings that embodiment 1 is prepared and the Fe that comparative example 1 is prepared
The polarization curve of base amorphous alloy coating, from fig. 9, it can be seen that Ni packets Al coats Fe base amorphous alloy coatings than Fe base amorphous
Alloy coat has higher corrosion potential, and the passivation region of Ni packets Al cladding Fe base amorphous alloy coatings is gentler, says
Bright Ni packets Al cladding Fe base amorphous alloy coatings have a better corrosion resistance, Ni contents in the compact texture and coating of the coating
Increase the coating is made to form more stable passivating film, coating is prevented further to be corroded.
By the Ni packets Al cladding Fe base amorphous alloy coatings that embodiment 1 is prepared and the Fe bases that comparative example 1 is prepared
Amorphous alloy coating carries out corrosion test respectively, and specific process is：It is 1cm × 1cm × 0.2cm's that sample is cut into size
Cuboid seals other five faces with epoxy resin or paraffin, only retains that face of coating, the sample that then will be sealed
It is placed in immersion corrosion in the NaCl solution of 3.5wt%, after immersion corrosion 120h, sample is taken out and dries up and carry out electron-microscope scanning.
Figure 10 a are that the Ni packets Al that embodiment 1 is prepared coats SEM figure of the Fe base amorphous alloy coatings after corrosion test
Spectrum can be seen that the Ni packets Al being prepared by embodiment 1 from Figure 10 a and coat Fe base amorphous alloy coatings after corroding 120h,
There is corrosion product in coating surface, and corrosion product is mainly generated in not molten particle and the not fine and close place of microstructure.
Figure 10 b are the SEM spectrum of Fe base amorphous alloy coatings that comparative example 1 is prepared after corrosion test, from Figure 10 b
As can be seen that be not added with Ni packet Al powder preparation Fe base amorphous alloy coatings after corrode 120h, coating surface occur largely
Corrosion product, corrosion product are mainly generated in not molten particle and the not fine and close place of microstructure, and the appearance area of corrosion product is about
It is 3 times of Ni packets Al cladding Fe base amorphous alloy coatings that the embodiment of the present invention 1 is prepared.
Figure 10 a and Figure 10 b are compared as can be seen that corrosion occurs mainly in not molten particle and coating microstrueture is not fine and close
Place, porosity defects can enter coating for corrosive medium and provide channel, since the Ni packets Al that embodiment 1 is prepared coats Fe bases
Amorphous alloy coating has the microstructure finer and close than the Fe base amorphous alloy coatings that comparative example 1 is prepared, therefore, warp
After 120h corrosion, the corrosion product of generation shows that it has the Fe base noncrystal alloys being prepared than comparative example 1 far fewer than the latter
The more excellent corrosion resistance of coating.
Embodiment 6
The present embodiment it is a kind of using Ni packets Al cladding Fe base noncrystal alloy composite powder prepares coatings method include with
Lower step：
Step 1: Ni packets Al is coated into Fe base noncrystal alloys composite powder dry 3h under conditions of 80 DEG C；
Step 2: Q235 steel first is removed surface rusty stain with the polishing of 800# sand paper, then surface is removed with washes of absolute alcohol
Then spot and organic matter carry out blasting treatment, the roughness Ra for making Q235 steel surfaces is 12 μm；
Step 3: the Ni packets Al cladding Fe base noncrystal alloys in step 1 after drying are answered using plasma spray coating process
The surface of the Q235 steel in powder spray to step 2 after blasting treatment is closed, the Ni packets Al that thickness is 240 μm is obtained and coats Fe
Base amorphous alloy coating；Q235 steel backs face is carried out at cooling using the pressure-air of air compressor machine compression in the spraying process
Reason；The parameter of the plasma spray coating process is：Arc voltage 50V, arc current 600A, argon flow amount 80L/min, hydrogen
Flow is 6L/min, plasma gun movement speed 30mm/s, spray distance 110mm.
Embodiment 7
The present embodiment it is a kind of using Ni packets Al cladding Fe base noncrystal alloy composite powder prepares coatings method include with
Lower step：
Step 1: Ni packets Al is coated into Fe base noncrystal alloys composite powder dry 3h under conditions of 80 DEG C；
Step 2: by T8 steel first with 800# sand paper polishing remove surface rusty stain, then with acetone clean removing surface blot and
Then organic matter carries out blasting treatment, the roughness Ra for making T8 steel surfaces is 11.2 μm；
Step 3: the Ni packets Al cladding Fe base noncrystal alloys in step 1 after drying are answered using plasma spray coating process
The surface of the T8 steel in powder spray to step 2 after blasting treatment is closed, the Ni packets Al that thickness is 360 μm is obtained and coats Fe bases
Amorphous alloy coating；Cooling processing is carried out to T8 steel backs face using the pressure-air of air compressor machine compression in the spraying process；Institute
The parameter for stating plasma spray coating process is：Arc voltage 50V, arc current 600A, argon flow amount 80L/min, hydrogen flowing quantity
For 6L/min, plasma gun movement speed 30mm/s, spray distance 110mm.
Embodiment 8
The present embodiment it is a kind of using Ni packets Al cladding Fe base noncrystal alloy composite powder prepares coatings method include with
Lower step：
Step 1: Ni packets Al is coated into Fe base noncrystal alloys composite powder dry 3h under conditions of 80 DEG C；
Step 2: 316L stainless steels are first removed into surface rusty stain, then cleaned with acetone and remove surface with the polishing of 800# sand paper
Then spot and organic matter carry out blasting treatment, the roughness Ra for making 316L stainless steel surfaces is 9.6 μm；
Step 3: the Ni packets Al cladding Fe base noncrystal alloys in step 1 after drying are answered using plasma spray coating process
The surface of the 316L stainless steels in powder spray to step 2 after blasting treatment is closed, obtains the Ni packet Al packets that thickness is 600 μm
Cover Fe base amorphous alloy coatings；The 316L stainless steels back side is carried out using the pressure-air of air compressor machine compression in the spraying process
Cooling is handled；The parameter of the plasma spray coating process is：Arc voltage 50V, arc current 600A, argon flow amount 80L/
Min, hydrogen flowing quantity 6L/min, plasma gun movement speed 30mm/s, spray distance 110mm.
The above is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions.It is every according to invention skill
Any simple modification, change and equivalence change that art substantially makees above example, still fall within technical solution of the present invention
Protection domain in.
Claims (9)
1.Ni packets Al coats Fe base noncrystal alloy composite powders, which is characterized in that the composite powder is by Fe based amorphous alloy powders
Kernel and the Ni packet Al powder housing being coated on outside Fe based amorphous alloy powder kernels form, Ni packet Al powder in the composite powder
The mass content at end is that the mass content of 5%~20%, Fe based amorphous alloy powders is 80%~95%.
2. Ni packets Al according to claim 1 coats Fe base noncrystal alloy composite powders, which is characterized in that the Ni packets Al
The ingredient of powder is Ni90Al10, grain size is 1 μm~30 μm；The ingredient of the Fe based amorphous alloy powders is
Fe62.8Ni13.6Cr9.9Mo8.6Si1.9C2.3B0.9, grain size is 15 μm~50 μm.
3. a kind of method for preparing Ni packets Al claddings Fe base noncrystal alloy composite powders as claimed in claim 1 or 2, feature
It is, the detailed process of this method is as follows：Ni packet Al powder and Fe based amorphous alloy powders are dried respectively, then mixed
Mixed-powder is formed uniformly, then the mixed-powder is placed in planetary ball mill and carries out ball-milling treatment, obtains Ni packet Al packets
Cover Fe base noncrystal alloy composite powders.
4. according to the method described in claim 3, it is characterized in that, the abrading-ball that uses of the ball-milling treatment is diameter 8mm and straight
316 stainless steel balls of diameter 12mm, 316 stainless steel balls of the diameter 8mm and the mass ratio of 316 stainless steel balls of diameter 12mm are
2:1, the MC high abrasion-resistance nylon tanks that the ball grinder that the ball-milling treatment uses is 100mL for volume.
5. according to the method described in claim 3, it is characterized in that, abrading-ball and mixed-powder during the ball-milling treatment
Mass ratio is 10:1~15:1.
6. according to the method described in claim 3, it is characterized in that, the rotating speed of the ball-milling treatment is 120r/min~240r/
Min, time are 3h~4h, during the ball-milling treatment per ball milling 30min after rest 5min.
7. a kind of method of Ni packets Al cladding Fe base noncrystal alloy composite powder prepares coatings using described in claims 1 or 2,
It is characterized in that, this method includes the following steps：
Step 1: Ni packets Al cladding Fe base noncrystal alloy composite powders are dried；
Step 2: matrix is first polished with sand paper, then cleaned with absolute ethyl alcohol or acetone, then carry out blasting treatment, make matrix
The roughness Ra on surface is 9.6 μm~12 μm；The material of described matrix is steel；
Step 3: the Ni packets Al in step 1 after drying is coated by Fe base noncrystal alloy composite powders using plasma spray coating process
End sprays to the surface of the matrix after blasting treatment in step 2, obtains Ni packets Al cladding Fe base amorphous alloy coatings；It is described
Cooling processing is carried out to the matrix back side using the pressure-air of air compressor machine compression in spraying process.
8. the method according to the description of claim 7 is characterized in that the parameter of plasma spray coating process described in step 3 is：
Arc voltage 50V, arc current 600A, argon flow amount 80L/min, hydrogen flowing quantity 6L/min, plasma gun movement speed
Spend 30mm/s, spray distance 110mm.
9. the method according to the description of claim 7 is characterized in that Ni packets Al cladding Fe base noncrystal alloys obtained in step 3
The thickness of coating is 240 μm~600 μm.
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