CN106435430B - A method of improving thermal spraying MCrAlY coating antioxygenic property - Google Patents
A method of improving thermal spraying MCrAlY coating antioxygenic property Download PDFInfo
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- CN106435430B CN106435430B CN201611142476.4A CN201611142476A CN106435430B CN 106435430 B CN106435430 B CN 106435430B CN 201611142476 A CN201611142476 A CN 201611142476A CN 106435430 B CN106435430 B CN 106435430B
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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
- C23C4/18—After-treatment
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/48—Ion implantation
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
- C23C28/022—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer with at least one MCrAlX layer
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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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/027—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.
Abstract
A method of thermal spraying MCrAlY coating antioxygenic property being improved, the method comprises the following steps: high temperature alloy matrix is cleaned, derusted, is fixed on the worktable after sandblasting roughening treatment by (1)；(2) certain thickness MCrAlY coating is prepared in matrix surface using plasma spray technology；(3) select the corresponding electrode material of alloying element to be penetrated into, handled using the thermal spraying MCrAlY coating that pulse plasma body technique completes preparation, obtain have micro nano structure containing the MCrAlY coating for penetrating into alloying element.The method of the present invention, which is removed, can be achieved the prior art to thermal spraying MCrAlY coating remelting, achieve the effect that eliminate outside coating structure defect and thinning microstructure, it can also be penetrated into coat inside beneficial to alloying element, the antioxygenic property of coating is improved by the synergistic effect of structure refinement and alloying element.
Description
Technical field
It is anti-using the synergistic effect of structure refinement and active element raising thermal spraying MCrAlY coating that the present invention relates to a kind of
The method of oxidation susceptibility belongs to material surface engineering field.
Background technique
High-temperature protection coating plays a significant role the protection of aero-engine and ground gas turbine hot-end component.
MCrAlY(M=Ni, Co or Ni+Co) alloy coating at high temperature both can be used alone, it can also be used as the adhesive layer of thermal barrier coating,
It is one of the high-temperature protection coating studied and be most widely used at present.
Thermal spraying has many advantages, such as high production efficiency, at low cost, easy to operate, is to prepare the main of MCrAlY coating at present
One of technological means.Unavoidably there is hole, crackle, lamellar in the characteristics of due to plasma spray technology itself, coat inside
The defects of structure and no cofusing particle, this will lead to non-protective oxide be prematurely formed and local preferred growth, be greatly reduced
The antioxygenic property of coating.Mainly pass through vacuum heat treatment, bead and load beam (laser beam, ion beam, electronics at present
Beam) technologies such as processing improve the above-mentioned tissue defects of coating.Carrying beam processing is wherein to study and report a kind of most methods,
The technology is to eliminate tissue defects by laser beam/anatexis of the ion beam/electron beam to coating.2009, Dalian University of Science & Engineering
" high-current pulsed electron beam is irradiated to NiCoCrAlY coating article of the Mei Xianxiu of university et al. on " light laser and ion beam "
The influence of structure and performance " studies have shown that using high-current pulsed electron beam technical treatment low-voltage plasma spraying NiCoCrAlY
After coating, the hole and crackle of coat inside disappear, and coating surface is finer and close and smooth, and coating oxygen resistant to high temperatures greatly improved
Change performance.Publication number CN103789713 discloses a kind of anti-oxidant MCrAlY fine grain barrier material and its preparation side
Method, this method obtain the remelting of ultra-fine grained structure using high-current pulsed electron beam technical treatment plasma spraying MCrAlY coating
Layer.The above method can only improve coating structure, to coating alloy ingredient without any change.
Coating texture and alloying component are to influence the principal element of thermal spraying MCrAlY coating high temperature oxidation resistance.
Coating can be effectively reduced by adding suitable Ta, Re, Si, Ti, W, Pt, Hf, rare earth isoreactivity alloying element into coating
The growth rate of surface film oxide, and the adhesion of oxidation film is improved, to improve the high temperature oxidation resistance of coating.Coating
Alloying component is usually determined by powder.The program of coating alloy composition adjustment usually first prepares the powder of design ingredient, so
Powder spray is formed coating again afterwards, is finally designed according to coating performance feedback result re-optimization ingredient.There are the periods for the method
The shortcomings that length, complex process.
Therefore, a kind of thermal spraying MCrAlY coating that can have not only improved coating structure but also coating alloy ingredient can be improved is developed to change
Property method, make coating have better antioxygenic property, while again have advantage easy to operate, at low cost, it appears very compel
It cuts and with good application prospect.
Summary of the invention
In order to solve the technical problems in background technology, the invention proposes a kind of raising thermal spraying MCrAlY coatings
The method of antioxygenic property.Using pulsed plasma technical treatment thermal spraying MCrAlY coating, coating table on the one hand can be eliminated
The defects of layer hole, crackle, lamellar structure and no cofusing particle, while can also obtain the refinement even coating structure of nanosizing；
On the other hand it can penetrate on coating surface layer beneficial to alloying element.It is acted synergistically by above-mentioned both sides, greatly improves coating
Antioxygenic property.
It is anti-oxidant the present invention provides thermal spraying MCrAlY coating is improved using structure refinement and active element synergistic effect
The method of performance, the method comprises the following steps:
(1) high temperature alloy matrix is cut into suitably sized, cleaned, derusting is fixed on work after sandblasting roughening treatment
Make on platform；
(2) certain thickness MCrAlY coating is prepared in matrix surface using plasma spray technology；
(3) the corresponding electrode material of alloying element to be penetrated into is selected, preparation is completed using pulse plasma body technique
Thermal spraying MCrAlY coating is handled, and the MCrAlY coating with the alloying element containing infiltration of micro nano structure is obtained.
The plasma spray technology used in the step (2) include plasma spraying technology, supersonic flame spraying technology or
Low-voltage plasma spraying technology.
MCrAlY coating in the step (2), M Ni, Co or Ni+Co, comprising NiCrAlY, CoCrAlY,
Tri- kinds of types of coatings of NiCoCrAlY.
The pulsed plasma technological processing craft parameter used in the step (3) are as follows: 3~10KV of voltage, plasma
Physical efficiency metric density 105-108W/cm2, number of processes 10~20 times, 30~100mm of distance is handled, vacuum degree is an atmospheric pressure,
Protective gas is argon gas or nitrogen.
Electrode material ingredient in the step (3) includes one or both of Ta, Re, Pt, Hf, rare earth element and two
Kind or more element composition alloy.
The guiding theory of above-mentioned technical proposal is: pulsed plasma equipment cleverly propeller system and is waited using one
Ion gun connection, working gas enter plasma gun after heating, accelerating in advance in propeller, then discharge and make in high-voltage capacitance
The pulsed plasma rich in electrode metal element is generated with lower, plasma is formed under autonomous induction magnetic field and the function of current
Lorentz force is to accelerate to bombard matrix, under matrix surface is pulse, electric field, magnetic field and the flexible deformation the effects of, generates different
Normal heat and the migration of a large amount of Particle diffusions, inject matrix skin for electrode metal element, and surface layer is extremely fast heated to fusing,
Due to the rapid thermal conduction of matrix, the quickly solidification again of the surface of fusing, finally being formed in matrix surface has micro nano structure
New alloy layer.
The invention has the advantages that the method for the present invention (can add guarantor under normal pressure state using pulse plasma body technique
Shield atmosphere) coating is handled, cost is relatively low and to workpiece size without limitation, and pulsed electron beam technology need to be in vacuum environment
Under coating is handled, workpiece size is vulnerable to being limited to vacuum chamber size.In addition, method provided by the invention, which is removed, can be achieved pulse
Electron beam achievees the effect that eliminate outside coating structure defect and thinning microstructure to thermal spraying MCrAlY coating remelting, can also be to painting
Layer is internal to penetrate into beneficial to alloying element, and the antioxygenic property of coating is improved by the synergistic effect of structure refinement and alloying element.
Specific embodiment
Illustrate a specific embodiment of the invention below with reference to example.
Embodiment 1
A kind of method for improving thermal spraying MCrAlY coating antioxygenic property of the present embodiment, its step are as follows:
(1) choosing GH49 high temperature alloy is matrix, after matrix is cut into 20 ㎜ × 20 ㎜ × 10mm block, through alcohol
By dedicated sand-blasting machine after cleaning, matrix surface is carried out using the blasting pressure of the white fused alumina sand grains of 20~40 mesh, 0.6MPa
Sandblasting roughening treatment；
(2) choosing Co21Ni21Cr8Al0.5Y powder is dusty spray, using plasma spraying technology pretreated
Matrix surface prepares Co21Ni21Cr8Al0.5Y coating, and coating layer thickness is 150 μm.Plasma spraying technology technological parameter are as follows: electricity
Stream is 750A, argon flow 1.9m3/ h, hydrogen flowing quantity are 0.9 m3/ h, spray distance 80mm, powder feeding rate 50g/min.
(3) select Ta for electrode material, the plasma spraying completed using pulse plasma body technique to preparation
Co21Ni21Cr8Al0.5Y coating is handled, the pulsed plasma technological processing craft parameter of use are as follows: voltage 8KV,
Energy density of plasma is 108W/cm2, number of processes is 15 times, and processing distance is 50mm, and vacuum degree is an atmospheric pressure, is protected
Shield gas is argon gas.
It is found by SEM observation analysis, through the processed plasma spraying of method provided by the invention
There is the modified layer after about 30 μm in Co21Ni21Cr8Al0.5Y coating surface layer, modified layer inner tissue is uniform, and no obvious stomata is split
Line and oxide distribution, and it is dispersed with a large amount of fine grained texture.It is found through energy spectrum analysis, the depth of penetration of Ta element is about 5 μm.
By the coating before and after pulse plasma technical treatment through 1000 DEG C × 100h high temperature oxidation resistance experiment show through pulse etc. from
Coating surface oxide thickness after sub- technical treatment is significantly less than untreated coating, illustrates pulse plasma technical treatment
Coating afterwards has better antioxygenic property.
Embodiment 2
A kind of method for improving thermal spraying MCrAlY coating antioxygenic property of the present embodiment, its step are as follows:
(1) choosing GH49 high temperature alloy is matrix, after matrix is cut into 20 ㎜ × 20 ㎜ × 10mm block, through alcohol
By dedicated sand-blasting machine after cleaning, matrix surface is carried out using the blasting pressure of the white fused alumina sand grains of 20~40 mesh, 0.6MPa
Sandblasting roughening treatment；
(2) choosing Ni22Cr12Al0.5Y powder is dusty spray, using supersonic flame spraying technology preprocessed
Matrix surface prepare Ni22Cr12Al0.5Y coating, coating layer thickness be 200 μm.Supersonic flame spraying technical matters parameter
Are as follows: kerosene oil flow 20L/h, oxygen flow 53m3/ h, spray distance 380mm, powder feeding rate 60g/min.
(3) select Re for electrode material, the supersonic flame spraying completed using pulse plasma body technique to preparation
Ni22Cr12Al0.5Y coating is handled, the pulsed plasma technological processing craft parameter of use are as follows: voltage 8.5KV,
Energy density of plasma is 108W/cm2, number of processes is 20 times, and processing distance is 60mm, and vacuum degree is an atmospheric pressure, is protected
Shield gas is argon gas.
It is found by SEM observation analysis, through the processed supersonic flame spraying of method provided by the invention
Ni22Cr12Al0.5Y coating surface layer exist about 40 μm after modified layer, modified layer inner tissue is uniform, without obvious stomata, crackle and
Oxide distribution, and it is dispersed with a large amount of fine grained texture.It is found through energy spectrum analysis, the depth of penetration of Re element is about 8 μm.By arteries and veins
The coating of plasma technology before and after the processing is rushed to show through the high temperature oxidation resistance experiment of 1000 DEG C × 100h through pulse plasma skill
Treated that coating surface oxide thickness is significantly less than untreated coating for art, after illustrating pulse plasma technical treatment
Coating has better antioxygenic property.
Embodiment 3
A kind of method for improving thermal spraying MCrAlY coating antioxygenic property of the present embodiment, its step are as follows:
(1) choosing GH49 high temperature alloy is matrix, after matrix is cut into 20 ㎜ × 20 ㎜ × 10mm block, through alcohol
By dedicated sand-blasting machine after cleaning, matrix surface is carried out using the blasting pressure of the white fused alumina sand grains of 20~40 mesh, 0.6MPa
Sandblasting roughening treatment；
(2) choosing Co24Cr8Al0.5Y powder is dusty spray, using low-voltage plasma spraying technology pretreated
Matrix surface prepares Co24Cr8Al0.5Y coating, and coating layer thickness is 200 μm.Low-voltage plasma spraying technical matters parameter are as follows: electricity
Stream is 600A, argon flow 3.6m3/ h, hydrogen flowing quantity are 0.5 m3/ h, spray distance 270mm, powder feeding rate 55g/min.
(3) select Pt for electrode material, the low-voltage plasma spraying skill completed using pulse plasma body technique to preparation
Art Co24Cr8Al0.5Y coating is handled, the pulsed plasma technological processing craft parameter of use are as follows: and voltage is 10 KV,
Energy density of plasma is 108W/cm2, number of processes is 20 times, and processing distance is 70mm, and vacuum degree is an atmospheric pressure, is protected
Shield gas is argon gas.
It is found by SEM observation analysis, through the processed low-voltage plasma spraying technology of method provided by the invention
Co24Cr8Al0.5Y coating surface layer exist about 45 μm after modified layer, modified layer inner tissue is uniform, without obvious stomata, crackle and
Oxide distribution, and it is dispersed with a large amount of fine grained texture.It is found through energy spectrum analysis, the depth of penetration of Pt element is about 10 μm.It will
Coating before and after pulse plasma technical treatment shows through the high temperature oxidation resistance experiment of 1000 DEG C × 100h through pulse plasma
Coating surface oxide thickness after technical treatment is significantly less than untreated coating, after illustrating pulse plasma technical treatment
Coating have better antioxygenic property.
Claims (1)
1. a kind of method for improving thermal spraying MCrAlY coating antioxygenic property, which is characterized in that the method comprises the following steps:
(1) high temperature alloy matrix is cut into suitably sized, cleaned, derusting is fixed on workbench after sandblasting roughening treatment
On；
(2) certain thickness MCrAlY coating is prepared in matrix surface using plasma spray technology；
(3) selection includes that one or more of Ta, Re, Pt penetrate into the corresponding electrode material of alloying element, utilizes pulse
The thermal spraying MCrAlY coating that plasma technique completes preparation is handled, and is obtained to penetrate into containing with micro nano structure and be closed
The MCrAlY coating of gold element；
The pulsed plasma technological processing craft parameter are as follows: 3~10KV of voltage, energy density of plasma 105-108W/
cm2, number of processes 10~20 times, 30~100mm of distance is handled, vacuum degree is an atmospheric pressure, and protective gas is argon gas or nitrogen
Gas.
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| CN108754386A (en) * | 2018-07-27 | 2018-11-06 | 北方工业大学 | Thermal shock resistant MCrAlY coating and preparation method thereof |
| CN113166918B (en) * | 2020-07-17 | 2022-10-14 | 山东交通学院 | Preparation method of compact wear-resistant coating on surface of low-carbon steel |
| CN112853295A (en) * | 2021-01-07 | 2021-05-28 | 中北大学 | Preparation method for constructing gradient transition structure of thin film sensor by oxygen ion implantation |
| CN112941454A (en) * | 2021-01-28 | 2021-06-11 | 南京工程学院 | Laser remelting post-treatment method for preparing high-temperature oxidation corrosion resistant MCrAlY coating by supersonic flame thermal spraying |
| CN115747795B (en) * | 2022-12-05 | 2024-03-26 | 江苏大学 | Thermal barrier coating bonding layer with high service life and preparation method thereof |
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