CN109280955A - A kind of heat resistant and wear resistant MCrAlSiC composite coating - Google Patents
A kind of heat resistant and wear resistant MCrAlSiC composite coating Download PDFInfo
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- CN109280955A CN109280955A CN201811381832.7A CN201811381832A CN109280955A CN 109280955 A CN109280955 A CN 109280955A CN 201811381832 A CN201811381832 A CN 201811381832A CN 109280955 A CN109280955 A CN 109280955A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
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Abstract
The present invention relates to a kind of heat resistant and wear resistant MCrAlSiC composite coating, including resistance to high temperature oxidation particle, the M base of abrasion resistant particles and enwrapped granule.Resistance to high temperature oxidation particle is CrAl alloying pellet or is mixed using Cr particle with Al particle in the composite coating；The hard particles are SiC, and the M base of enwrapped granule is Ni, Co, Fe or combinations thereof.Preparation process is electrophoresis-electro-deposition two-step method, and specifically, first electrophoretic deposition CrAl particle and SiC particulate are uniformly distributed loose porous CrAlSiC coating to obtain particle；Grow it from CrAlSiC/ basal body interface to CrAlSiC coating surface by electro-deposition M again, to obtain fine and close MCrAlSiC composite coating.MCrAl coating has excellent mechanical performance and high temperature oxidation resistance.
Description
Technical field
The present invention relates to high temperature protection field, specifically heat resistant and wear resistant MCrAlSiC composite coating.
Background technique
MCrAl (Y) (M=Ni, Co, Fe or combinations thereof) at high temperature can thermally grown Al2O3Or Cr2O3Film, and then improve heat
The resistance to high temperature oxidation and hot corrosion resistance of end pieces, therefore it is usually used in aero-engine compressor blade, turbo blade and combustion gas
Turbine blade.And during actual military service, friction and wear failure be also the structural elements that cause to be on active service at high temperature such as
The major reason of blade of aviation engine failure.Therefore, the coating on these high-temperature component surfaces not only needs excellent resist
High temperature oxidation resistance, while being also required to good abrasion resistance.Existing coating, usually only have good resistance to high temperature oxidation and
Hot corrosion resistance, because without hard particles without having preferable wear-resisting property, such as Publication No. " CN106756819A ", name
A kind of referred to as patent of " MCrAlY high-temperature protection coating preparation method "；Or only there is excellent wear-resisting property, be but free of anti-height
Warm oxidizing elemental, such as Publication No. CN105506526A, it is entitled " preparation method of aluminum alloy surface Ni-SiC composite deposite and
The patent of its electroplate liquid ", Ni-SiC composite deposite is because containing SiC particulate, so there is preferable hardness and wear-resisting property, it is related
Patent does not study its antioxygenic property.According to high-temperature oxydation knowledge, coating in an oxidizing environment can be thermally grown continuous fine and close
Al2O3、Cr2O3Or SiO2Film will have good antioxygenic property.The antioxygenic property of General N i-SiC coating compared to
MCrAl (Y) coating is far short of what is expected.This is because it is without containing anti-oxidizing elements such as CrAl, along with the content of Si in electroplated coating
It is not sufficient to ensure that the selective oxidation of Si occurs in service condition in it and generates SiO2Protective film, as one can imagine its antioxygenic property
It can be poor.To fill up this vacancy, this patent provides while having excellent resistance to high temperature oxidation and wear-resisting property
The preparation method of MCrAlSiC composite coating, and have studied its high temperature oxidation resistance and friction and wear behavior.This patent proposes
First electrophoresis-plating prepares MCrAlSiC coating, and technique is in two steps.One, the mixed powder of electrophoretic deposition CrAl particle and SiC particulate
Body, to obtain loose porous CrAlSiC coating；Two, the electro-deposition M in CrAlSiC coating, to obtain densification
MCrASiC coating.Relative to conventional composite electroplating technology, cost substantially reduces this electrophoresis-electroplating technology, and two-step method preparation applies
The content of layer endoparticle is also greatly improved compared to composite plating process prepares coating endoparticle content, thereby may be ensured that coating
Coating has preferable high temperature oxidation resistance and wear-resisting property simultaneously, thus has good promotional value.
Summary of the invention
For these problems, the purpose of the present invention is to provide be provided simultaneously with excellent high temperature oxidation resistance and wearability
The MCrAlSiC coating of energy.
Preparation method is carried out in two steps, and (1) prepares loose porous CrAlSiC layer on substrate with electrophoretic deposition；(2)
The substrate that cellular CrAlSiC coating coats is put into containing M(M=Ni, Fe or Co or combinations thereof) that electricity is carried out in electroplating solution is heavy
Product, to obtain MCrAlSiC type composite deposite.
Specific implementation step is as follows: step (1), using W metal, Ni based alloy, Fe, Fe based alloy or stainless steel as substrate,
Electrophoresis solution contains CrAl particle and SiC particulate.Matrix is put into electrophoresis solution, leads to direct current and carries out electrophoretic deposition, thus
Obtain loose porous CrAlSiC coating；(2) matrix that CrAlSiC coating coats is put into electroplate liquid and is electroplated, deposited
M, (M Ni, Fe, Co or combinations thereof), to obtain MCrAlSiC coating.Furthermore it is possible to be ground according to the temperature of military service and friction
Situation is damaged, the content and ratio of the CrAl and SiC particulate in coating are regulated and controled, is suitble to the high temperature resistant of the Service Environment resistance to obtain
Grind composite coating.
This method preparation process is simple and convenient to operate, is low in cost, is also easy to prepare on complicated form part；Coating
Ingredient is easily controllable, and to adapt to different Service Environments, coating has excellent high temperature oxidation resistance and wear-resisting property simultaneously,
Thus it is easy to commercial introduction.
Detailed description of the invention
Fig. 1 is the schematic diagram of heat resistant and wear resistant MCrAlSiC composite coating of the present invention.Number mark meaning is as follows in figure: 1
It is hard particles for anti-oxidant particle, 2,3 be the M base of enwrapped granule.
Fig. 2 is cutting for one embodiment of the invention electrophoresis-electro-deposition two-step method preparation Ni7Cr6Al10SiC composite coating
Face pattern.
Fig. 3 is that one embodiment of the invention preparation is free of the Ni9Cr9Al0SiC composite coating of SiC and containing SiC's
Thermogravimetric analysis (TGA) curve that Ni7Cr6Al10SiC composite coating aoxidizes 20 h in 900 DEG C of air compares figure.
Fig. 4 is that one embodiment of the invention preparation is free of the Ni9Cr9Al0SiC composite coating of SiC and containing SiC's
Rate of depreciation compares figure to Ni7Cr6Al10SiC composite coating at room temperature.
Fig. 5 is that one embodiment of the invention preparation is free of the Ni9Cr9Al0SiC composite coating of SiC and containing SiC's
Thermogravimetric analysis (TGA) curve that Ni4Cr4Al20SiC composite coating aoxidizes 20h in 900 DEG C of air compares figure.
Fig. 6 is that one embodiment of the invention preparation is free of the Ni9Cr9Al0SiC composite coating of SiC and containing SiC's
Rate of depreciation compares figure to Ni4Cr4Al20SiC composite coating at room temperature.
1. sample substrates of embodiment are Ni, (have dissolved 0.4 with the electrophoresis solution of the CrAl nano particle containing only 4g/L
The MgCl of g/L2·6H2The ethanol solution of O) preparation NiCrAl coating it is as a comparison sample.2 are added in the electrophoresis solution
G/L sub-micron SiC particle is uniformly mixed, and prepares NiCrAlSiC coating.Electrophoretic voltage is 60 V, and the time is 90 s, and temperature is
Room temperature.Electroplating solution watt plating solution, plating solution composition NiSO4·7H2O 150 g/L, NiCl230 g/L, H3BO330 g/L,
It is not stirred in electroplating process, current density is 1 A/cm2, and electroplating time is 1.5 h.
Power spectrum the result shows that, contrast sample ingredient is Ni9Cr9Al0SiC, and heat resistant and wear resistant coating composition is
Ni7Cr6Al10SiC, percentage.The latter is declined slightly compared to the former (Cr+Al) content, this is because electrophoresis
SiC particulate contends with one other with CrAl particle in the process, therefore the latter has the SiC but Cr of high level, Al content to be declined slightly again.It will
Two kinds of coatings are 900o20 h are aoxidized in C air.Oxidation weight gain curve surface, is added the coating of SiC, oxidation rate compared to
Ni9Cr9Al0SiC coating is slightly accelerated, but the oxidation weight gain curve of two kinds of coatings meets parabola rule.That is, oxidation is just
Phase oxidation weight gain is very fast, tends towards stability later.Show that two kinds of coatings all have good antioxygenic property.Study oxidation film at
Distribution is existing, and the oxidation film of the two is outer layer NiAl2O4, internal layer Al2O3Structure.Protectiveness Al2O3Generation be coating have it is excellent
The basic reason of different antioxygenic property is rubbed.Vickers microhardness experimental result is that the hardness of Ni9Cr9Al0SiC is 490Hv,
And Ni7Cr6Al10SiC hardness is 605Hv, improves 23% compared to the coating hardness without SiC.Wear test is wiped to show
The wear rate of NiCrAlSiC coating is only the 43% of NiCrAl coating.It follows that the NiCrAlSiC coating of this technique preparation is same
When with excellent high temperature oxidation resistance and wear-resisting property.
2. sample substrates of embodiment are Ni, change the concentration of SiC in electrophoresis solution, and two-step method preparation is electroplated by electrophoresis
Coating.Side, composite coating composition Ni4Cr4Al20SiC, percentage are examined through power spectrum.By this coating and SiC is not added
Ni9Cr9Al0SiC comparison, 900oOxidation weight gain curve shows that the weight gain of Ni4Cr4Al20SiC coating is obviously high in C air
It increases weight in Ni9Cr9Al0SiC.But the Ni11Cr3Al nano-composite coating of the numerical value and thermally grown Cr2O3 film is in 900oC oxygen
Change 0.6 mg/cm of oxidation weight gain of 20 h2Quite, far below generation non-protective NiO film Ni4Cr2Al nano-composite coating
Increase weight 4 mg/cm2.Although it follows that Ni4Cr4Al20SiC coating weight gain be higher than Ni9Cr9Al0SiC nano-composite coating,
But its oxidation film still has preferable antioxygenic property.The discovery of energy spectrum analysis oxidation film, the oxygen of Ni4Cr4Al20SiC coating
Change product is outer layer NiO, internal layer NiCr2O4Spinelle and SiO2.This is because (Cr+Al) content in coating is lower, it is insufficient
To generate protective Al2O3Film.NiCr2O4It is the NiO and Cr generated2O3It reacts:
NiO + Cr2O3 = NiCr2O4
Result.And the Si content in coating is very high, therefore generate protective SiO2Film.Well-known to, Cr2O3, Al2O3
And SiO2It is most common three kinds of protective oxide films in high-temperature oxydation, can plays a protective role.It follows that
Ni4Cr4Al20SiC composite coating in an oxidizing environment can thermally grown SiO2And there is antioxidation.Vickers microhardness is real
Testing result is, Ni4Cr4Al20SiC hardness is 586Hv, improves compared to the Ni7Cr6Al10SiC coating hardness without SiC
20%.Frictional wear experiment shows that the rate of depreciation of the coating is only the 50% of Ni9Cr9Al0SiC.It follows that this technique system
Standby Ni4Cr4Al20SiC composite coating is provided simultaneously with excellent high temperature oxidation resistance and wear-resisting property.
Claims (6)
1. a kind of heat resistant and wear resistant MCrAlSiC composite coating, it is characterized in that: including resistance to high temperature oxidation particle (1), hard, wear-resistant
Particle (2), the matrix M(3 of enwrapped granule).
2. a kind of heat resistant and wear resistant MCrAlSiC composite coating according to claim 1, characterized in that resistance to high temperature oxidation
Grain is CrAl alloying pellet or Cr particle and the mixing of Al particle.
3. a kind of heat resistant and wear resistant MCrAlSiC composite coating according to claim 1, characterized in that coating
Contain hard, wear-resistant particle SiC in MCrAl coating simultaneously.
4. a kind of heat resistant and wear resistant MCrAlSiC composite coating according to claim 1, characterized in that the base of enwrapped granule
Body M is Ni, Co, Fe or combinations thereof.
5. a kind of heat resistant and wear resistant MCrAlSiC composite coating according to claim 1, characterized in that resistance to high temperature oxidation
Grain (1) and abrasion resistant particles (2) are to be obtained by electrophoretic deposition in the preset loose porous CrAlSiC sedimentary of sample surfaces
's.
6. a kind of heat resistant and wear resistant MCrAlSiC composite coating according to claim 1, characterized in that the base of enwrapped granule
Body M be by loose porous CrAlSiC sedimentary electro-deposition M obtain, to obtain fine and close MCrAlSiC coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811381832.7A CN109280955A (en) | 2018-11-20 | 2018-11-20 | A kind of heat resistant and wear resistant MCrAlSiC composite coating |
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| CN201811381832.7A CN109280955A (en) | 2018-11-20 | 2018-11-20 | A kind of heat resistant and wear resistant MCrAlSiC composite coating |
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Citations (8)
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|---|---|---|---|---|
| CN1188158A (en) * | 1997-01-13 | 1998-07-22 | 中国科学院金属研究所 | Method for preparing metal-base composite material reinforced by non-continuous ceramics reinforcing agent |
| DE19946650A1 (en) * | 1999-09-29 | 2001-09-13 | Mtu Aero Engines Gmbh | Process for the production of armor for a metallic component |
| JP2004099955A (en) * | 2002-09-06 | 2004-04-02 | Mitsubishi Heavy Ind Ltd | Abrasion resistant coating and application method therefor |
| CN201924067U (en) * | 2010-12-21 | 2011-08-10 | 苏州雅典娜科技有限公司 | High-temperature-resistant and abrasion-resistant protective coating |
| CN105506526A (en) * | 2015-12-08 | 2016-04-20 | 西北工业大学 | Preparation method of Ni-SiC compound coating on surface of aluminum alloy and electroplating solution thereof |
| CN205329146U (en) * | 2015-11-12 | 2016-06-22 | 广东电网有限责任公司电力科学研究院 | Novel siC whisker reinforcing gas turbine blade composite biocoating |
| CN105803376A (en) * | 2016-03-17 | 2016-07-27 | 广东省新材料研究所 | Preparation method of high-temperature oxidation resistant and wear resistant coating layer |
| CN106756819A (en) * | 2016-09-30 | 2017-05-31 | 广东省新材料研究所 | A kind of MCrAlY high-temperature protection coatings preparation method |
-
2018
- 2018-11-20 CN CN201811381832.7A patent/CN109280955A/en active Pending
Patent Citations (8)
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| DE19946650A1 (en) * | 1999-09-29 | 2001-09-13 | Mtu Aero Engines Gmbh | Process for the production of armor for a metallic component |
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| CN205329146U (en) * | 2015-11-12 | 2016-06-22 | 广东电网有限责任公司电力科学研究院 | Novel siC whisker reinforcing gas turbine blade composite biocoating |
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Application publication date: 20190129 |