CN102888536B - Preparation method of nickel-aluminum-based intermetallic compound coating - Google Patents
Preparation method of nickel-aluminum-based intermetallic compound coating Download PDFInfo
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- CN102888536B CN102888536B CN201210399354.9A CN201210399354A CN102888536B CN 102888536 B CN102888536 B CN 102888536B CN 201210399354 A CN201210399354 A CN 201210399354A CN 102888536 B CN102888536 B CN 102888536B
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Abstract
The invention provides a nickel-aluminum-based intermetallic compound coating, which comprises the following components by weight: 55-70% of Ni, 25-35% of Al and 3-15% of Ti. The nickel-aluminum-based intermetallic compound coating, provided by the invention, has good wetting property about an iron-based substrate or a stainless steel substrate, and the bonding strength with the iron-based substrate or the stainless steel substrate is greatly improved. Furthermore, according to the preparation method provided by the invention, the content of a liquid phase in a synthesis process of a nickel-aluminum-based intermetallic compound is improved, the nickel-aluminum-based intermetallic compound coating is quickly prepared, and the prepared nickel-aluminum-based intermetallic compound coating has the advantages of good quality, high compactness and low porosity.
Description
Technical field
The present invention relates to inorganic material coating, particularly relate to a kind of nickel aluminum based metal compound coating and preparation method thereof.
Background technology
NiAl base intermetallic compound is that one has excellent high temperature antioxidant property, has again the coated material of thermal conductivity simultaneously.As important coated material, NiAl base intermetallic compound obtains investigation and application widely on blade of aviation engine, has become the important component part of thermal protection coating.Current preparation method has the coat preparing technologies such as thermospray, CVD, EB-PVD, magnetron sputtering, there is, complex process, high in cost of production restriction high to equipment requirements.By contrast, the method for self-propagating synthesis synthesis NiAl base intermetallic compound is used to have efficient, energy-conservation, product purity advantages of higher.
Although use self-propagating synthesis NiAl to achieve a series of progress in recent years in prepared by coating, the practical application of this technology is still restricted.One of them key issue is the own fusing point of NiAl higher (1911K), the full liquid phase synthesis of more difficult realization in self-propagating synthesis process, and the porosity of product is comparatively large, causes the preparation of high-density coating to have great difficulty.According to calculation of thermodynamics, use traditional self-propagating method can only realize the liquid phase NiAl of about 42% in building-up process, and terminate quick solidification shaping with reaction, liquid phase NiAl lifetime often only has the several seconds.Therefore, the liquid content how improved in reaction is the key improving coating quality.In addition, it is good not that current NiAl base intermetallic compound coating also exists the wettability of iron or stainless steel base, the problem of interface bond strength difference.
Summary of the invention
For solving problems of the prior art, contriver against expectation finds, the wettability of nickel aluminum based metal compound coating to iron-based or stainless steel base can be improved by adding Ti powder, the bonding strength of nickel aluminum based metal compound coating and iron-based or stainless steel base can be improved; In addition, by using induction heating (frequency is 100 ~ 500kHz) and imposing the method for pressure (10 ~ 40MPa), liquid content in nickel aluminum based metal compound building-up process can be improved, can realize preparing fast the high and nickel aluminum based metal compound coating that porosity is low of density, thus complete the present invention.
The invention provides a kind of nickel aluminum based metal compound coating, comprise the Ni that massfraction is 55 ~ 70%, massfraction is the Al of 25 ~ 35%, and massfraction is the Ti of 3 ~ 15%.
Adopt technique scheme, nickel aluminum based metal compound coating provided by the invention has good wettability to iron-based or stainless steel base, and greatly improve with the bonding strength of iron-based matrix or stainless steel base, bonding strength can reach more than 240Mpa.
As a further improvement on the present invention, the concrete composition of described nickel aluminum based metal compound coating includes but not limited to NiAl, NiAl
3, TiAl and Ti
2ni.
As a further improvement on the present invention, described nickel aluminum based metal compound coating also comprises the doped element that massfraction is 0.01 ~ 1%, and described doped element is selected from one or more of Hf, V and Zr.By the interpolation of above-mentioned massfraction doped element, bonding strength can be improved further, can more than 280Mpa be reached; If the massfraction of doped element is more than 1%, then can cause the reduction of bonding strength.
Accordingly, the present invention also provides a kind of preparation method of nickel aluminum based metal compound coating, comprises the steps:
A) take raw material and mix, after drying, under the pressure of 40 ~ 200Mpa, being pressed into pressed compact; Described raw material comprises the Ni powder of 55 ~ 70 parts by weight, the Al powder of 25 ~ 35 parts by weight and the Ti powder of 3 ~ 15 parts by weight;
B) described pressed compact is placed on matrix, under the pressure of 10 ~ 40MPa, by induction heating, described pressed compact is heated to 600 ~ 680 DEG C, the frequency of induction heating is 100 ~ 500kHz, and vigorous reaction occurs, reaction 5 ~ 100 s, generating nickel aluminum based metal compound coating.
Adopt technique scheme, preparation method provided by the invention is by induction heating (frequency is 100 ~ 500kHz) and impose pressure (10 ~ 40MPa), can be even, heat pressed compact rapidly, thermopositive reaction is there is after pressed compact is heated, when pressed compact is heated to more than 600 DEG C, NiAl can realize full liquid phase synthesis, temperature of reaction can more than the fusing point of NiAl own, generate liquid composition in very short time and form transition layer between matrix and nickel aluminium top coat, the quick preparation of nickel aluminum based metal compound coating can be realized, and the nickel aluminum based metal compound coating product quality of preparation is good, density is high, porosity is low, greatly improve with the bonding strength of iron-based or stainless steel base.
As a further improvement on the present invention, the concrete composition of described nickel aluminum based metal compound coating includes but not limited to NiAl, Ti
3al and Ti
2ni.
As a further improvement on the present invention, the median size of described Ni powder is 1 ~ 20 micron, and the median size of described Al powder is 3 ~ 15 microns, and the median size of described Ti powder is 1 ~ 10 micron.
As a further improvement on the present invention, the median size of described Ni powder is 3 ~ 11 microns, and the median size of described Al powder is 10 ~ 12 microns, and the median size of described Ti powder is 3 ~ 5 microns.
As a further improvement on the present invention, described raw material also comprises the doped element of 0.01 ~ 1 parts by weight, and described doped element is selected from one or more of Hf, V and Zr.
In addition, the present invention also provides another preparation method of nickel aluminum based metal compound coating, comprises the steps:
A) take raw material and mix, after drying, under the pressure of 40 ~ 200Mpa, being pressed into transition pressed compact; Described raw material comprises the Ni powder of 55 ~ 70 parts by weight, the Al powder of 25 ~ 35 parts by weight;
B), under the Ti powder taking 3 ~ 15 parts by weight is evenly placed in described transition pressed compact, under the pressure of 40 ~ 200Mpa, pressed compact is pressed into;
C) described pressed compact is faced down juxtaposition on matrix containing one of Ti, under the pressure of 10 ~ 40MPa, by induction heating, described pressed compact is heated to 600 ~ 680 DEG C, the frequency of induction heating is 100 ~ 500kHz, reaction 5 ~ 100 s, generating nickel aluminum based metal compound coating.
Adopt technique scheme, by increasing the contact area of Ti and matrix and using induction heating, full liquid phase synthesis can be realized, temperature of reaction can more than the fusing point of NiAl own, generate liquid composition in very short time and form transition layer between matrix and nickel aluminium top coat, the quick preparation of nickel aluminum based metal compound coating can be realized, preparation technology is simple, and the nickel aluminum based metal compound coating product quality of preparation is good, density is high, porosity is low, is greatly improved with the bonding strength of iron-based or stainless steel base.
As a further improvement on the present invention, described raw material also comprises the doped element of 0.01 ~ 1 parts by weight, and described doped element is selected from one or more of Hf, V and Zr.
Compared with prior art, the invention has the beneficial effects as follows: nickel aluminum based metal compound coating provided by the invention has good wettability to iron-based or stainless steel base, greatly improves with the bonding strength of iron-based or stainless steel base; Preparation method provided by the invention can realize full liquid phase synthesis, improve liquid content in nickel aluminum based metal compound building-up process, the quick preparation of nickel aluminum based metal compound coating can be realized, preparation technology is simple, good in economic efficiency, and the nickel aluminum based metal compound coating product quality of preparation is good, density is high, porosity is low, and reliability is strong, greatly improves with the bonding strength of iron-based or stainless steel base.
Accompanying drawing explanation
The scanning electron microscope (SEM) photograph that Fig. 1 nickel aluminum based metal compound coating is combined with iron-based matrix; Wherein 1-A is iron-based matrix, and 1-B is transition layer, and 1-C is NiAl coating.
The secondary electron image that Fig. 2 nickel aluminum based metal compound coating is combined with iron-based matrix; Wherein 2-A is iron-based matrix, and 2-B is transition layer, and 2-C is NiAl coating.
Fig. 3 nickel aluminum based metal compound coating is combined the scanning electron microscope (SEM) photograph of the transition layer formed with iron-based matrix.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further details.
the preparation of embodiment one nickel aluminum based metal compound coating.
Take the Ti powder of the Ni powder of 55 parts by weight, the Al powder of 35 parts by weight and 10 parts by weight, mixing, after drying, is pressed into pressed compact under the pressure of 150Mpa; Wherein, the median size of Ni powder is 3 microns, and the median size of Al powder is 12 microns, and the median size of Ti powder is 10 microns.The pressed compact obtained is placed in iron-based matrix, under the pressure of 40MPa, by existing induction heating technique, described pressed compact is heated to 650 DEG C, the frequency of induction heating is 320kHz, there is vigorous reaction, react 10 s, generating nickel aluminum based metal compound coating, reaches 245 MPa with the bonding strength of iron-based matrix through existing stretching method measurement.
As shown in Figure 1, as shown in Figure 2, wherein A is iron-based matrix to secondary electron image to the scanning electron microscope (SEM) photograph that nickel aluminum based metal compound coating is combined with iron-based matrix, and B is transition layer, and C is NiAl coating.Obvious space is there is no as can be seen from Figure 2 between iron-based matrix and transition layer; Obvious space is there is no between transition layer and NiAl coating.
As shown in Figure 3, as can be seen from Figure 3, there are A, B, C, D, E, F many phases in transition layer to the scanning electron microscope (SEM) photograph of transition layer, has Multiple components.The chemical composition of each phase is as shown in table 1.
the preparation of embodiment two nickel aluminum based metal compound coating.
Take the V powder of the Ni powder of 70 parts by weight, the Al powder of 25 parts by weight, the Ti powder of 4 parts by weight and 1 parts by weight, mixing, after drying, is pressed into pressed compact under the pressure of 200Mpa; Wherein, the median size of Ni powder is 11 microns, and the median size of Al powder is 3 microns, and the median size of Ti powder is 5 microns.The pressed compact obtained is placed on stainless steel base, under the pressure of 10MPa, by existing induction heating technique, described pressed compact is heated to 600 DEG C, the frequency of induction heating is 100kHz, there is vigorous reaction, react 30 s, generating nickel aluminum based metal compound coating, reaches 290 MPa with the bonding strength of iron-based matrix through existing stretching method measurement.
the preparation of embodiment three nickel aluminum based metal compound coating.
Take the Ni powder of 60 parts by weight and the Al powder of 30 parts by weight, mixing, after drying, is pressed into transition pressed compact under the pressure of 100Mpa; Wherein, the median size of Ni powder is 15 microns, and the median size of Al powder is 3 microns.Under the Ti powder taking 10 parts by weight is evenly placed in described transition pressed compact, under the pressure of 100Mpa, be pressed into pressed compact, wherein, the median size of Ti powder is 3 microns; The pressed compact obtained is placed in iron-based matrix, under the pressure of 10MPa, by existing induction heating technique, described pressed compact is heated to 650 DEG C, the frequency of induction heating is 320kHz, there is vigorous reaction, react 10 s, generating nickel aluminum based metal compound coating, reaches 260 MPa with the bonding strength of iron-based matrix through existing stretching method measurement.
the preparation of embodiment four nickel aluminum based metal compound coating.
Take the Hf powder of the Ni powder of 60 parts by weight, the Al powder of 30 parts by weight and 1 parts by weight, mixing, after drying, is pressed into transition pressed compact under the pressure of 200Mpa; Wherein, the median size of Ni powder is 15 microns, and the median size of Al powder is 3 microns, and the median size of Hf powder is 6 microns.Under the Ti powder taking 9 parts by weight is evenly placed in described transition pressed compact, under the pressure of 200Mpa, be pressed into pressed compact, wherein, the median size of Ti powder is 5 microns; The pressed compact obtained is placed on stainless steel base, under the pressure of 40MPa, by existing induction heating technique, described pressed compact is heated to 680 DEG C, the frequency of induction heating is 500kHz, there is vigorous reaction, react 5 s, generating nickel aluminum based metal compound coating, reaches 293MPa with the bonding strength of iron-based matrix through existing stretching method measurement.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. a preparation method for nickel aluminum based metal compound coating, is characterized in that: comprise the steps:
Take raw material and mix, after drying, under the pressure of 40 ~ 200MPa, being pressed into pressed compact; Described raw material comprises the Ni powder of 55 ~ 70 parts by weight, the Al powder of 25 ~ 35 parts by weight and the Ti powder of 3 ~ 15 parts by weight; Described raw material also comprises the doped element of 0.01 ~ 1 parts by weight, and described doped element is selected from one or more of Hf, V and Zr;
Described pressed compact is placed on matrix, under the pressure of 10 ~ 40MPa, by induction heating, described pressed compact is heated to 600 ~ 680 DEG C, the frequency of induction heating is 100 ~ 500kHz, reaction 5 ~ 100 s, generating nickel aluminum based metal compound coating, the concrete composition of described nickel aluminum based metal compound coating comprises NiAl, Ti
3al and Ti
2ni.
2. the preparation method of nickel aluminum based metal compound coating according to claim 1, is characterized in that: the median size of described Ni powder is 1 ~ 20 micron, and the median size of described Al powder is 3 ~ 15 microns, and the median size of described Ti powder is 1 ~ 10 micron.
3. the preparation method of nickel aluminum based metal compound coating according to claim 2, is characterized in that: the median size of described Ni powder is 3 ~ 11 microns, and the median size of described Al powder is 10 ~ 12 microns, and the median size of described Ti powder is 3 ~ 5 microns.
4. a preparation method for nickel aluminum based metal compound coating, is characterized in that: comprise the steps:
A) take raw material and mix, after drying, under the pressure of 40 ~ 200MPa, being pressed into transition pressed compact; Described raw material comprises the Ni powder of 55 ~ 70 parts by weight and the Al powder of 25 ~ 35 parts by weight, and described raw material also comprises the doped element of 0.01 ~ 1 parts by weight, and described doped element is selected from one or more of Hf, V and Zr;
B), under the Ti powder taking 3 ~ 15 parts by weight is evenly placed in described transition pressed compact, under the pressure of 40 ~ 200MPa, pressed compact is pressed into;
C) described pressed compact is faced down juxtaposition on matrix containing one of Ti, under the pressure of 10 ~ 40MPa, by induction heating, described pressed compact is heated to 600 ~ 680 DEG C, the frequency of induction heating is 100 ~ 500kHz, reaction 5 ~ 100 s, generating nickel aluminum based metal compound coating.
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| CN106588064B (en) * | 2016-12-07 | 2019-03-12 | 湖南中南智造新材料协同创新有限公司 | The solder and connection method of carbon/carbon compound material and nickel base superalloy |
| CN109648085A (en) * | 2019-01-11 | 2019-04-19 | 武汉科技大学 | A kind of preparation method of high-frequency induction auxiliary self-spreading NiAl series intermetallic compound coating |
| CN109778176A (en) * | 2019-01-11 | 2019-05-21 | 武汉科技大学 | A kind of preparation method of high-frequency induction auxiliary self-spreading TiAl series intermetallic compound coating |
| 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 |
Citations (2)
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| CN1806969A (en) * | 2006-02-08 | 2006-07-26 | 江苏大学 | Method for preparing TiC/Ni3Al intermetallic compound based surface composite coating |
| CN101269557A (en) * | 2008-05-08 | 2008-09-24 | 北京航空航天大学 | Composite binding course material and method for producing composite binding course by using combination of plating and electro beam physics vapour deposition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1085589A (en) * | 1965-09-27 | 1967-10-04 | Ford Motor Co | Nickel-aluminium alloys |
| JPS62274042A (en) * | 1986-05-22 | 1987-11-28 | Mitsubishi Heavy Ind Ltd | Sliding member |
| GB9025486D0 (en) * | 1990-11-23 | 1991-01-09 | Rolls Royce Plc | Ni-ti-al alloys |
| US5167732A (en) * | 1991-10-03 | 1992-12-01 | Textron, Inc. | Nickel aluminide base single crystal alloys |
| CN102438823B (en) * | 2009-03-24 | 2017-12-12 | 通用电器技术有限公司 | The coating of the metal tube of fatigue corrosion crack |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1806969A (en) * | 2006-02-08 | 2006-07-26 | 江苏大学 | Method for preparing TiC/Ni3Al intermetallic compound based surface composite coating |
| CN101269557A (en) * | 2008-05-08 | 2008-09-24 | 北京航空航天大学 | Composite binding course material and method for producing composite binding course by using combination of plating and electro beam physics vapour deposition |
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