CN109648085A - A kind of preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating - Google Patents
A kind of preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating Download PDFInfo
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- CN109648085A CN109648085A CN201910026394.0A CN201910026394A CN109648085A CN 109648085 A CN109648085 A CN 109648085A CN 201910026394 A CN201910026394 A CN 201910026394A CN 109648085 A CN109648085 A CN 109648085A
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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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/23—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces involving a self-propagating high-temperature synthesis or reaction sintering step
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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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
- B22F2007/042—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method
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Abstract
The invention discloses a kind of preparation methods of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating, it is related to material surface engineering field.The characteristics of this method, is: firstly, suppressing prefabricated blank in proportion to nickel powder, aluminium powder；Then, with sand paper polishing matrix surface；NiAl intermetallic compound coating is obtained finally, being preheated with high-frequency induction auxiliary self-spreading method by matrix and coating and lighting self-propagating reaction.Present invention process is simple, heating efficiency is high, at low cost, and acquisition coating is smooth, fine and close, the porosity is low, bond strength is high.The surface treatment such as tool and mould and structural elements can be widely used in and remanufactured, their service life is improved.
Description
Technical field
The present invention relates to material surface engineering fields, and in particular between a kind of high-frequency induction auxiliary self-spreading NiAl system metal
The preparation method of compound coat.
Background technique
NiAl series intermetallic compound has fusing point height, hardness height, light specific gravity, thermal conductivity height, high inoxidizability and height
Temperature stability and good thermal fatigue resistance energy.NiAl series intermetallic compound is expected to replace existing Ni-based and iron-based
High temperature alloy is applied in higher temperature and worse environment.In order to improve the high-temperature behavior of steel, usually on its surface
Coat layer of Ni Al system metal compound coatings.In the surface engineering technology for preparing NiAl system metal compound coatings, from climing
Prolonging high―temperature nuclei (SHS) technology is a kind of quick, simple, economic and interface cleanness in-situ preparation NiAl series intermetallic compound
The technology of coating.But NiAl series intermetallic compound coating is prepared only with single SHS method, especially preparing shallow layer
When, it faces that SHS conversion zone is thin, and total thermal discharge is few, adds the good thermal conductivity of metallic matrix, can not make at base metal surface
In molten condition, cause the binding performance of coating and metallic matrix bad.So being often required to use auxiliary thermal source by substrate preheating
Or promote the temperature of matrix surface.Compared with argon arc, laser, heating furnace and plasma etc., high-frequency induction has simple process, adds
The advantages that thermal velocity is fast, heat waste is few, heating efficiency is high, pollution-free, processing quality is high, at low cost, it is compound to can be used as self- propagating
The auxiliary thermal source of coating.But currently, seldom using high-frequency induction auxiliary self-spreading preparation NiAl system metal compound coatings.
It is compound from profit that publication No. CN105290406A discloses a kind of self- propagating method preparation NiAl series intermetallic compound
The method of sliding coating.This method is by metallic matrix, Ni-Al green compact, 3Ni-Al-MoS2It successively stacks from bottom to top, lights Ni-
Al green compact pressurizes simultaneously.This method only leans on single SHS heat release to keep the interfacial combined function of coating and matrix bad.Publication No.
CN102925890A discloses a kind of preparation method of nickel-aluminum base intermetallic compound corrosion-resistant finishes.This method is using heating
Furnace synthesizes thickness NiAl coating in carbon steel surface in situ as auxiliary thermal source, and this method can not be resulted in the need for non-using pressurizing device
The often raw material powder of thickness (> 10mm), this causes waste of material serious and subsequent grinding amount is big.University Of Science and Technology Of Shandong is electromechanical
Engineering department (Yuan Jianjun) uses plasma spraying method fabricated in situ Ni-Al metal carbonyl compound coating in Q235 steel matrix
(Yuan Jianjun, Lou Shumei, Wang Tao wait research [J] hot-working of plasma in situ synthesis Ni-Al base intermetallic compound coating
Technique, 2010,39 (2): 83-84).This method causes anchoring strength of coating not high using plasma spraying mode, at the same time
Ni and Al, which can not apply external pressure when reacting, causes coating consistency little.Kunming University of Science and Technology's college of materials science and engineering
(Tang Shujun) (Tang Shujun, Liu Hongxi open fabricated in situ Ni-Al metal compound coatings on H13 steel using laser cladding method
Know big, waits microstructure and property [J] of .H13 steel surface selective laser cladding Ni-Al intermetallic compound coating infrared and laser
Engineering, 2014,43 (5): 1621-1626).It sputters and then leads when this method can only add a small amount of Al to prevent Ni and Al from reacting
The defect more than coating hole and crackle is caused, intermetallic compound containing Ni-Al is few in the coating of this method preparation.Publication No.
CN102888536A discloses a kind of nickel aluminum based metal compound coating and preparation method thereof.This method by by 55~
Al and 3~15wt.%Ti green compact of 70wt.%Ni, 25~35wt.% are placed on metallic matrix, are assisted using electromagnetic induction
And the mode pressurizeed fabricated in situ nickel aluminum based metal compound coating on metallic matrix.When this method self-propagating synthesis pressurizes
It is easy to cause the liquid phase NiAl of generation to be extruded matrix and pressure head under pressure.Obtain pure Ni-Al intermetallic compound
Coating must use suitable auxiliary thermal source and pressuring method.
Summary of the invention
Based on the above the deficiencies in the prior art, technical problem solved by the invention is to provide a kind of directly in gold
Metal surface prepares the high quality NiAl that smooth, fine and close, the porosity is low, bond strength is high by high-frequency induction auxiliary self-spreading method
Coating.This method has the advantages that heating efficiency height and at low cost.
In order to solve the above technical problem, the present invention provides a kind of high-frequency induction auxiliary self-spreading NiAl system intermetallics
The preparation method of object coating, comprises the following steps:
(1) Ni powder and Al powder are mixed, acetone is then added, is stirred under 40~55 DEG C of ultrasound conditions, volatilized to acetone
Until stirring difficulty；Then vacuum drying treatment obtains mixing；In steel mold bottom, tiling transition zone forms metal, then
Mixing is put into the transition zone in punching block to be formed above metal, is pressed into the powder agglomates of compactness 70%~80%, it is dry to be placed in vacuum
It is spare in dry environment；
(2) matrix surface of steel plate is polished with sand paper and removes rusty stain, and is clean with washes of absolute alcohol, be put into sealed environment
In it is spare；
(3) step (1) resulting powder agglomates is placed on above matrix steel plate, is put into graphite jig with latter piece；Then
It is reacted by high-frequency induction auxiliary self-spreading to get the high-frequency induction auxiliary self-spreading NiAl coating.
As a preferred embodiment of the above technical solution, high-frequency induction auxiliary self-spreading NiAl system provided by the invention intermetallic
The preparation method of object coating further comprises some or all of following technical characteristic:
As an improvement of the above technical solution, in the step (1), the partial size of Ni powder is 2~10 μm；The partial size of Al powder is
10~30 μm.
As an improvement of the above technical solution, in the step (1), Ni powder and Al powder press Ni/Al atomic ratio as 1:1's
Ratio mixing.
As an improvement of the above technical solution, the transition zone in the step (1) forms metal and is selected from Ni powder, Fe powder, Co
Powder, Mo powder or Cr powder.
As an improvement of the above technical solution, the condition of the vacuum drying treatment in the step (1) is 70~95 DEG C, very
Reciprocal of duty cycle < 133Pa, 10~15 hours of drying time；It is placed in step (1) in vacuum drying environment, is the vacuum at 70~95 DEG C
It is 12~15 hours dry under the conditions of degree < 133Pa.
As an improvement of the above technical solution, in steel mold bottom, tiling transition zone forms metal, institute in the step (1)
The transition zone stated forms metal volume=0.1~1mm of transition region thickness × workpiece surface area to be coated.
As an improvement of the above technical solution, high-frequency induction auxiliary self-spreading reaction process described in the step (3) has
Body is as follows:
After sample is placed together with mold be put into induction coil middle cover upper box lid by hydraulic press to sample apply 3~
The precompression of 4MPa or so, opening simultaneously the logical argon gas of air valve makes box house reduce oxygen in cabinet full of argon gas for 1~5 minute
Content；200A electric current is selected to preheat 40s to sample later, 300~400 DEG C of temperature measurer displays temperature, close power supply later at this time
It makes specimen temperature uniform, power supply is opened after 5s using the electric current of 250A and continues heating after observing the thermal explosion that reaction generates
The pressure and 50~60s of pressure maintaining for applying 20~40MPa to sample immediately, are then turned off induction heating power and by sample in argon gas
Natural cooling in environment.
Compared with prior art, technical solution of the present invention has the following beneficial effects:
The present invention provide it is a kind of directly metal surface by high-frequency induction auxiliary self-spreading method prepare it is smooth, fine and close,
The high quality NiAl coating that the porosity is low, bond strength is high.Heating efficiency height and at low cost.
The present invention is suitable for the surface peening of various tool and moulds and structural elements and remanufactures, and improves tool and mould and zero
The service life of part.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, below in conjunction with preferred embodiment, detailed description are as follows.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, the attached drawing to embodiment is simply situated between below
It continues.
Fig. 1 is the schematic diagram of high-frequency induction auxiliary self-spreading device used in the present invention；
Fig. 2 is high-frequency induction auxiliary self-spreading NiAl coating surface XRD diagram obtained in embodiment 1；
Fig. 3 is high-frequency induction auxiliary self-spreading NiAl coating surface scanning electron microscope (SEM) photograph obtained in embodiment 1；
Fig. 4 is high-frequency induction auxiliary self-spreading NiAl coating profile scanning electron microscope obtained in embodiment 1；
Fig. 5 (a) is Ni layers-surface of high-frequency induction auxiliary self-spreading NiAl coating section transition zone obtained in embodiment 1
Layer NiAl layer interface scanning electron microscope；
Fig. 5 (b) is Ni layers-surface of high-frequency induction auxiliary self-spreading NiAl coating section transition zone obtained in embodiment 1
Layer NiAl layer parting line scanning spectra.
Specific embodiment
The following detailed description of a specific embodiment of the invention, as part of this specification, by embodiment come
Illustrate that the principle of the present invention, other aspects of the present invention, feature and its advantage will become apparent by the detailed description.
Can be clearly seen that from Fig. 1: reaction chamber be used to accommodate graphite jig, corundum cylinder, induction coil, matrix steel and
Various powder；Argon gas provides ar gas environment to entire reaction unit from reaction lower box part and prevents from adding before high-frequency induction heating
Graphite jig, matrix steel and various Powder Oxidations in heat, reaction and cooling procedure；The graphite sleeve of graphite jig is used to accommodate stone
Black paper, matrix steel and reaction powder, graphite sleeve, which heats up, when high-frequency induction provides heat to reaction powder and matrix, and when pressurization is given
Reaction unit provides enclosed environment；Reaction powder provides pressure and prevents when the cylinder of corundum up and down of graphite jig is used to reaction
The heat of reaction system scatters and disappears outward；The induction coil around graphite sleeve is placed in graphite sleeve, matrix steel and reaction powder
End heating；The thermocouple for being placed in graphite sleeve lower part is used to measure the temperature in heating and reaction process.
Industrial chemicals used in the present invention is technical grade product.
Embodiment 1
A kind of preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating, it includes following step
It is rapid:
(1) Ni powder and Al powder are mixed and is poured into beaker in the ratio that Ni/Al atomic ratio is 1:1 and stirred evenly, then
Acetone is poured into, beaker is placed on and continues to stir in supersonic wave cleaning machine, 50 DEG C of water temperature constant temperature, evaporating into stirring difficulty to acetone is
Only, hereafter beaker is put into vacuum oven at a temperature of 85 DEG C, is dried in vacuo 12 hours；Subsequent a certain amount of Ni powder is flat
It is layered on steel mold bottom, then the mixing after ball milling is put into mold again, is pressed into the powder agglomates of compactness 76%, it then will pressure
Good powder agglomates is placed spare in a vacuum drying oven.
(2) 5CrNiMo surface of steel plate is polished with sand paper and removes rusty stain and other attachments, and is dry with washes of absolute alcohol
Only, it is put into spare in seal box.
(3) powder agglomates for preparing step 1 is placed on above 5CrNiMo steel plate, is put into graphite jig with latter piece；But
Additional Ni- is in addition also wanted below matrix in advance in graphite jig inner surface layer overlay graphite paper before being put into
50at.%Al mixed-powder is come the thermal loss for the system of supplementing；Induction coil middle cover is put into together with mold after sample is placed
Upper box lid applies the precompression of 3.5MPa or so by hydraulic press to sample, and open simultaneously the logical argon gas of air valve makes in cabinet for 5 minutes
The content of oxygen in cabinet is reduced full of argon gas in portion；200A electric current is selected to preheat 40s to sample later, the temperature of temperature measurer display at this time
About 300~400 DEG C of degree, closing power supply is uniform by specimen temperature later, and power supply is opened after 5s and is continued using the electric current of 250A
Heating is until be then turned off induction to the pressure and pressure maintaining 50s of sample application 35MPa immediately after observing the thermal explosion that reaction generates
Heating power supply and by sample natural cooling in an argon atmosphere.
Coating Phase Analysis: with X ' Pert PRO MPDX x ray diffractometer x (Cu-K α x-ray source, 0.02 ° of step-length, scanning range are 2 θ=10 °~90 °, scanning speed is 1.2 °/min) analysis composite coating
The object phase on surface.It is illustrated in figure 2 high-frequency induction auxiliary self-spreading NiAl coating surface XRD diagram obtained in embodiment 1, from figure
In it may be seen that the object of coating surface is mutually only NiAl.
Coating morphology observations method: with the NOVA 400NanoSEM type field emission microscopy observation coating with energy disperse spectroscopy
Surface scan electron microscope (as shown in Figure 3), profile scanning electron microscope (as shown in Figure 4), coating Ni layers-superficial layer of section transition zone
NiAl layer interface topography and line scanning spectra (such as Fig. 5 (a) and Fig. 5 (b) are shown)).Coating surface is smooth flat as can be seen from Figure 3
Whole, quality is good.Coating section is divided into base layer, Ni layers of transition zone and NiAl layer as can be seen from Figure 4.Three-decker is conducive to
It realizes the gradually transition of coating physical parameter and performance, reduces the peeling of coating under running conditions.Transition as can be seen from Figure 5
Ni layers of layer with superficial layer NiAl layer interface complications and Ni, Al element gradually change at interface, this illustrates transition zone and superficial layer tool
There is strong metallurgical bonding feature.
High-frequency induction self- propagating NiAl coating after above-mentioned process, has the effect that
(1) composite coating is smooth, fine and close, the porosity is low, bond strength is high.
(2) heating efficiency height and at low cost.
Embodiment 2
A kind of preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating, it includes following step
It is rapid:
(1) Ni powder and Al powder are mixed and is poured into beaker in the ratio that Ni/Al atomic ratio is 1:1 and stirred evenly, then
Acetone is poured into, beaker is placed on and continues to stir in supersonic wave cleaning machine, 45 DEG C of water temperature constant temperature, evaporating into stirring difficulty to acetone is
Only, hereafter beaker is put into vacuum oven at a temperature of 95 DEG C, is dried in vacuo 11 hours；Subsequent a certain amount of Co powder is flat
It is layered on steel mold bottom, then the mixing after ball milling is put into mold again, is pressed into the powder agglomates of compactness 80%, it then will pressure
Good powder agglomates is placed spare in a vacuum drying oven.
(2) H13 surface of steel plate is polished with sand paper and removes rusty stain and other attachments, and is clean with washes of absolute alcohol,
It is put into spare in seal box.
(3) powder agglomates for preparing step 1 is placed on above H13 steel plate, is put into graphite jig with latter piece；But it is being put into
Additional Ni-50at.%Al is in addition also wanted below matrix in advance in graphite jig inner surface layer overlay graphite paper before
Mixed-powder is come the thermal loss for the system of supplementing；Induction coil middle cover upper box lid is put into together with mold after sample is placed to pass through
Hydraulic press applies the precompression of 3MPa or so to sample, and opening simultaneously the logical argon gas of air valve subtracts box house full of argon gas in 4 minutes
The content of oxygen in few cabinet；Later select 200A electric current give sample preheat 40s, at this time temperature measurer displays temperature about 300~
400 DEG C, closing power supply is uniform by specimen temperature later, and power supply is opened after 5s using the electric current of 250A and continues heating until observing
To reaction generate thermal explosion after immediately to sample apply 30MPa pressure and pressure maintaining 60s, be then turned off induction heating power and will
Sample natural cooling in an argon atmosphere.
High-frequency induction self- propagating NiAl coating after above-mentioned process, has the effect that
(1) composite coating is smooth, fine and close, the porosity is low, bond strength is high.
(2) heating efficiency height and at low cost.
Embodiment 3
A kind of preparation method of high-frequency induction auxiliary self-spreading NiAl coating, it includes the following steps:
(1) Ni powder and Al powder are mixed and is poured into beaker in the ratio that Ni/Al atomic ratio is 1:1 and stirred evenly, then
Acetone is poured into, beaker is placed on and continues to stir in supersonic wave cleaning machine, 55 DEG C of water temperature constant temperature, evaporating into stirring difficulty to acetone is
Only, hereafter beaker is put into vacuum oven at a temperature of 70 DEG C, is dried in vacuo 15 hours；Subsequent a certain amount of Fe powder is flat
It is layered on steel mold bottom, then the mixing after ball milling is put into mold again, is pressed into the powder agglomates of compactness 70%, it then will pressure
Good powder agglomates is placed spare in a vacuum drying oven.
(2) No. 45 surface of steel plate are polished with sand paper and remove rusty stain and other attachments, and is clean with washes of absolute alcohol,
It is put into spare in seal box.
(3) powder agglomates for preparing step 1 is placed on above No. 45 steel plates, is put into graphite jig with latter piece；But it is putting
Additional Ni-50at.% is in addition also wanted below matrix in advance in graphite jig inner surface layer overlay graphite paper before entering
Al mixed-powder is come the thermal loss for the system of supplementing；Induction coil middle cover upper box lid is put into together with mold after sample is placed to lead to
The precompression that hydraulic press applies 4MPa or so to sample is crossed, opening simultaneously the logical argon gas of air valve makes box house full of argon gas for 5 minutes
Reduce the content of oxygen in cabinet；200A electric current is selected to preheat 40s to sample later, at this time temperature measurer displays temperature about 300
~400 DEG C, closing power supply is uniform by specimen temperature later, and power supply is opened after 5s using the electric current of 250A and continues heating until sight
Observe reaction generate thermal explosion after immediately to sample apply 40MPa pressure and pressure maintaining 55s, be then turned off induction heating power simultaneously
By sample natural cooling in an argon atmosphere.
High-frequency induction self- propagating NiAl coating after above-mentioned process, has the effect that
(1) composite coating is smooth, fine and close, the porosity is low, bond strength is high.
(2) heating efficiency height and at low cost.
The bound of each raw material cited by the present invention and each raw material of the present invention, section value and technological parameter
Bound, the section value of (such as temperature, time) can realize the present invention, embodiment numerous to list herein.
The above is a preferred embodiment of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, it is noted that for those skilled in the art, without departing from the principle of the present invention, may be used also
To make several improvement and variation, these, which improve and change, is also considered as protection scope of the present invention.
Claims (7)
1. a kind of preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating, which is characterized in that include
Following steps:
(1) Ni powder and Al powder are mixed, acetone is then added, is stirred under 40~55 DEG C of ultrasound conditions, evaporates into and stir to acetone
Until mixing difficulty；Then vacuum drying treatment obtains mixing；In steel mold bottom, tiling transition zone forms metal, then will mix
Expect that the transition zone being put into punching block is formed above metal, is pressed into the powder agglomates of compactness 70%~80%, is placed in vacuum drying ring
It is spare in border；
(2) matrix surface of steel plate is polished with sand paper and removes rusty stain, and is clean with washes of absolute alcohol, be put into standby in sealed environment
With；
(3) step (1) resulting powder agglomates is placed on above matrix steel plate, is put into graphite jig with latter piece；Then pass through
High-frequency induction auxiliary self-spreading reacts to get the high-frequency induction auxiliary self-spreading NiAl coating.
2. the preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating as described in claim 1,
Be characterized in that: in the step (1), the partial size of Ni powder is 2~10 μm；The partial size of Al powder is 10~30 μm.
3. the preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating as described in claim 1,
Be characterized in that: in the step (1), Ni powder and Al powder are mixed in the ratio that Ni/Al atomic ratio is 1:1.
4. the preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating as described in claim 1,
Be characterized in that: the transition zone in the step (1) forms metal and is selected from Ni powder, Fe powder, Co powder, Mo powder or Cr powder.
5. the preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating as described in claim 1,
Be characterized in that: the condition of the vacuum drying treatment in the step (1) is 70~95 DEG C, vacuum degree < 133Pa, drying time 10
~15 hours；It is placed in step (1) in vacuum drying environment, is dry 12 under the conditions of 70~95 DEG C, vacuum degree < 133Pa
~15 hours.
6. the preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating as described in claim 1,
Be characterized in that: in steel mold bottom, tiling transition zone forms metal in the step (1), and the transition zone forms metal volume
0.1~1mm of=transition region thickness × workpiece surface area to be coated.
7. the preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating as described in claim 1,
Be characterized in that: high-frequency induction auxiliary self-spreading reaction process described in the step (3) is specific as follows:
Induction coil middle cover upper box lid is put into together with mold after sample is placed, and the left side 3~4MPa is applied to sample by hydraulic press
Right precompression opens simultaneously air valve and leads to the content that argon gas makes box house reduce oxygen in cabinet full of argon gas for 1~5 minute；
It selects 200A electric current to preheat 40s to sample later, at this time 300~400 DEG C of temperature measurer displays temperature, closes power supply later by sample
Temperature is uniform, after 5s open power supply using 250A electric current continue heating until observe reaction generate thermal explosion after immediately to
Sample apply 20~40MPa pressure and 50~60s of pressure maintaining, be then turned off induction heating power and by sample in an argon atmosphere
Natural cooling.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404437A (en) * | 2020-10-30 | 2021-02-26 | 中泽电气科技有限公司 | High-hardness stainless steel power distribution cabinet |
| CN113089057A (en) * | 2021-03-30 | 2021-07-09 | 武汉科技大学 | Preparation method of composite electrodeposition-high frequency induction in-situ synthesis NiAl series intermetallic compound coating |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0241833A1 (en) * | 1986-04-11 | 1987-10-21 | Inco Alloys International, Inc. | Apparatus and method for processing powder metallurgy tubing |
| CN102888536A (en) * | 2012-10-19 | 2013-01-23 | 哈尔滨工业大学深圳研究生院 | Nickel-aluminum-based intermetallic compound coating and preparation method thereof |
| CN102925890A (en) * | 2012-10-26 | 2013-02-13 | 山东大学 | Preparation method for corrosion-resistant coating of nickel-aluminum based intermetallic compound |
| CN105290406A (en) * | 2015-11-10 | 2016-02-03 | 哈尔滨工业大学 | Method for preparing NiAl system intermetallic compound composite self-lubricating coating through self-propagating method |
| CN108950535A (en) * | 2018-06-29 | 2018-12-07 | 武汉科技大学 | A kind of preparation method of high-frequency induction auxiliary self-spreading titanium carbide base composite coating |
-
2019
- 2019-01-11 CN CN201910026394.0A patent/CN109648085A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0241833A1 (en) * | 1986-04-11 | 1987-10-21 | Inco Alloys International, Inc. | Apparatus and method for processing powder metallurgy tubing |
| CN102888536A (en) * | 2012-10-19 | 2013-01-23 | 哈尔滨工业大学深圳研究生院 | Nickel-aluminum-based intermetallic compound coating and preparation method thereof |
| CN102925890A (en) * | 2012-10-26 | 2013-02-13 | 山东大学 | Preparation method for corrosion-resistant coating of nickel-aluminum based intermetallic compound |
| CN105290406A (en) * | 2015-11-10 | 2016-02-03 | 哈尔滨工业大学 | Method for preparing NiAl system intermetallic compound composite self-lubricating coating through self-propagating method |
| CN108950535A (en) * | 2018-06-29 | 2018-12-07 | 武汉科技大学 | A kind of preparation method of high-frequency induction auxiliary self-spreading titanium carbide base composite coating |
Non-Patent Citations (4)
| Title |
|---|
| HAN-YOUNGLEE等: "The effects of induction heating rate on properties of Ni-Al based intermetallic compound layer coated on ductile cast iron by combustion synthesis", 《INTERMETALLIC》 * |
| TAOZHANG等: "Synthesis and fabrication of NiAl coatings with Ti underlayer using induction heating", 《SURFACE & COATINGS TECHNOLOGY》 * |
| X.ZHU ET AL: "The structure and properties of NiAl formed by SHS using induction heating", 《MATERIALS SCIENCEAND ENGINEERING》 * |
| 叶明敬等: "感应加热辅助自蔓延高温合成NiAl 金属间化合物的组织与性能", 《材料保护工艺技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404437A (en) * | 2020-10-30 | 2021-02-26 | 中泽电气科技有限公司 | High-hardness stainless steel power distribution cabinet |
| CN112404437B (en) * | 2020-10-30 | 2022-12-16 | 中泽电气科技有限公司 | High-hardness stainless steel power distribution cabinet |
| CN113089057A (en) * | 2021-03-30 | 2021-07-09 | 武汉科技大学 | Preparation method of composite electrodeposition-high frequency induction in-situ synthesis NiAl series intermetallic compound coating |
| CN113089057B (en) * | 2021-03-30 | 2024-06-25 | 武汉科技大学 | Preparation method for in-situ synthesis of NiAl intermetallic compound coating by composite electrodeposition-high-frequency induction |
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