CN106987813B - A kind of Mg alloy surface composite coating and its preparation method and application - Google Patents
A kind of Mg alloy surface composite coating and its preparation method and application Download PDFInfo
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- CN106987813B CN106987813B CN201710076291.6A CN201710076291A CN106987813B CN 106987813 B CN106987813 B CN 106987813B CN 201710076291 A CN201710076291 A CN 201710076291A CN 106987813 B CN106987813 B CN 106987813B
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 104
- 238000000576 coating method Methods 0.000 title claims abstract description 95
- 239000011248 coating agent Substances 0.000 title claims abstract description 94
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 58
- 239000004593 Epoxy Substances 0.000 claims abstract description 56
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 28
- 239000010935 stainless steel Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000007733 ion plating Methods 0.000 claims abstract description 9
- 238000003672 processing method Methods 0.000 claims abstract description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 34
- 229910052786 argon Inorganic materials 0.000 claims description 17
- 238000001704 evaporation Methods 0.000 claims description 17
- 230000008020 evaporation Effects 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000005554 pickling Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 238000010884 ion-beam technique Methods 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 229960002415 trichloroethylene Drugs 0.000 claims description 5
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 claims description 5
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- MQJKPEGWNLWLTK-UHFFFAOYSA-N Dapsone Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 MQJKPEGWNLWLTK-UHFFFAOYSA-N 0.000 claims description 3
- BDJRBEYXGGNYIS-UHFFFAOYSA-N Nonanedioid acid Natural products OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- -1 poly- azelaic acid acid anhydride Chemical class 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000009996 mechanical pre-treatment Methods 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 238000003682 fluorination reaction Methods 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 16
- 238000005260 corrosion Methods 0.000 abstract description 16
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 230000005855 radiation Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 3
- 238000004381 surface treatment Methods 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 235000019786 weight gain Nutrition 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000037396 body weight Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006334 epoxy coating Polymers 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 235000013024 sodium fluoride Nutrition 0.000 description 2
- 239000011775 sodium fluoride Substances 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- 206010067482 No adverse event Diseases 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- LQHZJYFIRFRDKF-UHFFFAOYSA-N gold magnesium Chemical compound [Mg].[Au] LQHZJYFIRFRDKF-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
Classifications
-
- 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
- C23C14/24—Vacuum evaporation
- C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
-
- 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
- C23C14/20—Metallic material, boron or silicon on organic substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
- B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
- B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2420/00—Indexing scheme corresponding to the position of each layer within a multilayer coating relative to the substrate
- B05D2420/01—Indexing scheme corresponding to the position of each layer within a multilayer coating relative to the substrate first layer from the substrate side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Physical Vapour Deposition (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a kind of Mg alloy surface composite coatings and its preparation method and application, belong to technical field of material surface treatment, the composite coating includes the stainless steel plated film for being overlying on the epoxy powder coating of Mg alloy surface after handling by clinkering and being deposited on epoxy powder coating surface using ion plating technique, the epoxy powder coating with a thickness of 100-360 μm, the stainless steel plated film with a thickness of 5-40 μm.The preparation method of the composite coating is first to prepare epoxy powder coating in Mg alloy surface using clinkering processing method, then stainless steel plated film is prepared in epoxy powder coating using ion plating technique.Mg alloy surface composite coating of the invention can not only improve the corrosion resistance of magnesium alloy workpiece, and assign workpiece surface good conductive and heat dissipation performance, magnesium alloy can be made to play its excellent performance in the industry, the functional coating that especially can be used as magnesium alloy heat radiation piece surface is applied.
Description
Technical field
The present invention relates to technical field of material surface treatment more particularly to a kind of Mg alloy surface composite coating and its preparations
Methods and applications solve the problems, such as magnesium alloy workpiece poor corrosion resistance, and assign workpiece surface good conductive and thermal diffusivity
Energy.
Background technique
Magnesium alloy is a kind of aviation industry light-duty alloy material with the most use, is such as closed with Mg alloy castings substitution aluminium
Golden casting, design strength requirement under the same conditions, the weight saving 25% ~ 30% of workpiece can be made.And magnesium alloy possesses perhaps
More excellent characteristics, such as specific strength, specific stiffness are high, perfect heat-dissipating, and have good electromagnetic wave shielding, damping and cutting
Processability is easily recycled simultaneously, is had no adverse effects to environment, therefore magnesium alloy becomes a kind of particularly important structural material,
In recent years in fields such as aerospace, traffic, optical instrument, electronics industry, automobiles using increasingly extensive, annual growth rate is about
20%。
But the chemical activity of magnesium is big, easily corrodes, and seriously affects it and is used for a long time in some crucial occasions, hinders
The industrial applications and popularization of magnesium-alloy material.Since the inherent characteristic of magnesium is determined, it is corrosion-resistant that its is improved by alloying
The effect of performance is limited, so magnesium alloy workpiece has to pass through certain corrosion-protected surface before use and handles to provide protection,
Magnesium alloy can be just set to play its excellent performance in the industry.In addition, certain occasions not only need magnesium alloy with superior resistance to
Corrosion energy, also requires its surface that must have good conductive radiator performance, and magnesium alloy substrate once generates in use
Electrostatic, if electrostatic export will cannot be caused serious consequence in time by erosion shield, therefore, the corrosion-resistant and surface conductance of exploitation,
The good Mg alloy surface composite coating of heat dissipation performance is of great significance to the practical application of magnesium alloy.
Summary of the invention
Technical problem to be solved by the present invention lies in overcoming the above problem, and provide a kind of Mg alloy surface composite coating
And its preparation method and application, which can be improved the corrosion resistance of magnesium alloy workpiece, and it is good to assign workpiece surface
Good conduction and heat dissipation performance, can make magnesium alloy play its excellent performance in the industry.
The technical scheme is that
A kind of Mg alloy surface composite coating, it is characterised in that: including being overlying on Mg alloy surface after handling by clinkering
Epoxy powder coating and the stainless steel plated film that epoxy powder coating surface is deposited on using ion plating technique, the epoxy powder are applied
Layer with a thickness of 100-360 μm, the stainless steel plated film with a thickness of 5-40 μm.Epoxy powder coating insulate and has good
Corrosion resistance, stainless steel plated film have good conductive and heat dissipation performance.
In above-mentioned Mg alloy surface composite coating, the epoxy powder coating uses modified epoxy powder coating clinkering
Processing obtains, and the modified epoxy powder coating described by weight includes following components: 60 parts of E-14 epoxy resin, bisphenol A-type
40 parts of epoxy resin, 20 parts of diamino diphenyl sulfone, 10 parts of poly- azelaic acid acid anhydride, 0.12 part of 2-methylimidazole, GLP588 levelling agent 2
Part, 30 parts of heat conductive graphite.
The present invention also provides a kind of preparation methods of above-mentioned Mg alloy surface composite coating, first use clinkering processing method
Epoxy powder coating is prepared in Mg alloy surface, then stainless steel plated film is prepared in epoxy powder coating using ion plating technique,
Specific step is as follows:
(1) surface mechanical pretreatment is carried out to magnesium alloy, and removes surface and oil contaminant, carried out blasting treatment, then remove table
Face floating dust；
(2) by magnesium alloy successively after overpickling, washing, hot blast drying；
(3) magnesium alloy is placed in 180-240 DEG C of baking oven, is preheated 10-20 minutes；
(4) epoxy powder is uniformly sprayed in preheated Mg alloy surface, to epoxy powder by electrostatic spray
Melted by heat and after further levelling covers entire Mg alloy surface, obtains the epoxy powder coating of 100-360 μ m-thick, then by magnesium
Alloy puts oven for curing 60-120 seconds of 180-240 DEG C into；
(5) taking out magnesium alloy makes it naturally cool to 90 DEG C, then cooling with 40 DEG C of water；
(6) it after cleaning up magnesium alloy, in the vacuum chamber that is placed into ion beam coating equipment on fixture, is evacuated to
0.006-0.01Pa；
(7) it is passed through argon gas and ion source Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas reaches vacuum indoor pressure
To and maintain 0.6-0.7Pa, evaporation source target selects 304 stainless steels, the control of evaporation source line in 50-60A, to magnesium alloy plus
If the back bias voltage of 20-40V, was deposited with 30 seconds, is cooled within 30 seconds the pre-deposition that a cycle carries out three periods；
(8) adjusting high-purity argon gas flow, evaporation source line and back bias voltage, hydatogenesis 2-12 hours, in the ring of magnesium alloy
Oxygen powder coating surface obtains the stainless steel plated film of 5-40 μ m-thick, specific adjustment parameter are as follows: the adjustable range of high-purity argon gas flow
For 100-150ml/min, reach vacuum indoor pressure and maintain 1.1-1.3Pa, the adjustable range of evaporation source line is 60-
70A, the adjustable range of back bias voltage are 20-40V.
In above-mentioned preparation method, pickling described in step (2) is to be placed in magnesium alloy in pickling solution to impregnate 1-2 points
Clock, the hydrofluoric acid for being 70% containing 200ml concentration in every 1 liter of pickling solution, 12g sodium fluoride, 10g sodium bicarbonate, surplus are
Distilled water.
In above-mentioned preparation method, cleaning up described in step (6) is that magnesium alloy is placed in trichloro ethylene is organic molten
In liquid, cleaned 5-7 minutes by supersonic wave cleaning machine.
In addition, being applied low in operating temperature the present invention also provides a kind of application of above-mentioned Mg alloy surface composite coating
In 180 DEG C, require that workpiece is light-weight and in cooling system that surface must be conductive, especially as magnesium alloy heat radiation piece surface
Functional coating uses.
The invention has the advantages and beneficial effects that:
1, in composite coating of the invention, epoxy powder coating insulate and has good corrosion-resistant, ageing-resistant and thermally conductive
Performance, stainless steel plated film has good conductive and heat dissipation performance, therefore the composite coating can be improved the resistance to of magnesium alloy workpiece
Corrosive nature, and assign workpiece surface good conductive and heat dissipation performance, magnesium alloy can be made to play its excellent property in the industry
Energy.
2, the present invention prepares epoxy powder coating in Mg alloy surface using clinkering processing method, so that coating layer thickness is equal
Even, the bond strength between magnesium alloy substrate is high, and porosity is extremely low, and coating has excellent compactness, permeability resistance
With the stability of long service；Stainless steel plated film is prepared in epoxy powder coating using ion plating technique, so that plated film and ring
The bond strength of oxygen powder coating is high, and processing technique is reliable, and convenient for producing in enormous quantities, coating quality is easy to control.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of composite coating in the present invention.
Fig. 2 is weight gain curve of the epoxy powder coating in 60 DEG C, 3.5% sodium chloride solution in the embodiment of the present invention 1.
Fig. 3 is the wear curve of 304 stainless steel plated films and M60 magnesium alloy in the embodiment of the present invention 1.
Specific embodiment
Now in conjunction with embodiment, the present invention is further illustrated:
As shown in Figure 1, Mg alloy surface composite coating of the invention includes being overlying on 10 table of magnesium alloy after handling by clinkering
The epoxy powder coating 20 in face and the stainless steel plated film 30 that 20 surface of epoxy powder coating is deposited on using ion plating technique, it is described
Epoxy powder coating 20 with a thickness of 100-360 μm, the stainless steel plated film 30 with a thickness of 5-40 μm.
Embodiment 1
The Mg alloy surface composite coating of the present embodiment includes the epoxy powder that Mg alloy surface is overlying on after handling by clinkering
Last coating and the stainless steel plated film on epoxy powder coating surface is deposited on using ion plating technique, epoxy powder coating with a thickness of
360 μm, stainless steel plated film with a thickness of 40 μm.Wherein, epoxy powder coating is handled using modified epoxy powder coating clinkering
It arrives, the modified epoxy powder coating described by weight includes following components: 60 parts of E-14 epoxy resin, bisphenol type epoxy tree
40 parts of rouge, 20 parts of diamino diphenyl sulfone, 10 parts of poly- azelaic acid acid anhydride, 2 parts of GLP588 levelling agent, is led by 0.12 part of 2-methylimidazole
30 parts of hot graphite.
The preparation method of the Mg alloy surface composite coating of the present embodiment is first using clinkering processing method in magnesium alloy table
Wheat flour prepares stainless steel plated film for epoxy powder coating, then using ion plating technique in epoxy powder coating, and specific steps are such as
Under:
(1) surface and oil contaminant is removed after the pretreatments such as mechanical lapping polishing to Mg alloy surface, carries out blasting treatment, and
Remove surface floating dust；
(2) by magnesium alloy successively after overpickling, washing, hot blast drying, pickling is that magnesium alloy is placed in pickling solution
It impregnates 1-2 minutes, the hydrofluoric acid for being 70% containing 200ml concentration in every 1 liter of pickling solution, 12g sodium fluoride, 10g sodium bicarbonate,
Surplus is distilled water；
(3) magnesium alloy is moved in the baking oven that temperature is 240 DEG C and is preheated 10 minutes；
(4) above-mentioned modified epoxy powder coating is taken, is first sufficiently fluidized in fluidized bed, powder is then made by electrostatic gun
Last particle is negatively charged, is uniformly adhered in preheated Mg alloy surface.Be adhered to preheating Mg alloy surface epoxy powder by
It is hot-melted and flows, further levelling covers entire Mg alloy surface, especially recess, ties coating closely with magnesium alloy
It closes, reduces hole to greatest extent, obtain the epoxy powder coating of 360 μ m-thicks in Mg alloy surface.Put magnesium alloy into 210 later
DEG C oven for curing 80 seconds；
(5) taking out magnesium alloy makes it naturally cool to 90 DEG C, then cooling with 40 DEG C of water；
(6) magnesium alloy is placed in trichloro ethylene organic solution, is cleaned 5 minutes by supersonic wave cleaning machine, is mounted in later
It is placed on fixture in the vacuum chamber of ion beam coating equipment, is evacuated to 0.009Pa；
(7) it is passed through argon gas and ion source Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas reaches vacuum indoor pressure
To and maintain 0.6Pa, evaporation source target selects 304 stainless steels, and evaporation source line is transferred to 50A, adds 40V's to magnesium alloy
Back bias voltage was deposited with 30 seconds, is cooled within 30 seconds the pre-deposition that a cycle carries out three periods；
(8) high-purity argon gas flow is transferred to 100ml/min, reaches vacuum indoor pressure and maintains 1.2Pa, evaporation source
Line is transferred to 65A, and back bias voltage is transferred to 20V, hydatogenesis 10 hours, obtains 40 μ m-thicks on the epoxy powder coating surface of magnesium alloy
Stainless steel plated film.So far, the composite coating of corrosion-resistant and surface conductance, excellent radiation performance is obtained in Mg alloy surface.
The present embodiment prepares composite coating using magnesium alloy heat radiation piece as substrate.
After the External fusion bonded epoxy coating of magnesium alloy heat radiation piece surface, it can be seen that even in deeper trench interiors
At the top of relatively thin cooling fin, coating result is all fine.The insulating properties of coating, any two points are determined using ZC-7 type megameter
Between resistance all reached 10,000 megaohms or more, this shows that the coating porosity that clinkering is handled is extremely low, and thickness is highly uniform.
The corrosion resistance that applicant handles epoxy powder coating obtained through clinkering to the present embodiment passes through soak test
It is evaluated, specific test method is: the sample of magnesium alloy heat radiation on piece External fusion bonded epoxy coating is put into 3.5%vol's
In NaCl solution, 60 DEG C of heat preservations are stood, and are taken out respectively when impregnating 2 days, 4 days, 15 days and 25 days, are measured with a ten thousandth balance
Sample weight simultaneously calculates rate of body weight gain.As a result as shown in Figure 2, it can be seen that the absorption salt water rate of body weight gain of epoxy powder coating until
It still is below 2% at 25 days, this shows that coating itself has extremely superior corrosion resistance.
Applicant is determined as electric conductivity of the MS8268 multimeter to composite coating made from the present embodiment.Knot
Fruit shows that the resistance between cooling fin any two points is designated as zero, this shows that the stainless steel coating film thickness on surface is uniform, conductive
It is functional.In addition, after tested, 304 stainless steel plated films maintain primary characteristic and preferable wear-resisting property and corrosion resistance are presented
Can, as shown in figure 3, the wear-resisting property of plated film is substantially better than M60 magnesium alloy.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, the difference is that:
In the composite coating of the present embodiment, epoxy powder coating with a thickness of 200 μm, stainless steel plated film with a thickness of 5 μ
m。
In the step of the present embodiment preparation method (3), magnesium alloy is moved to 20 points of preheating in the baking oven that temperature is 200 DEG C
Clock；In step (4), epoxy powder is uniformly sprayed to the epoxy that 200 μ m-thicks are obtained in Mg alloy surface by electrostatic spray
Powder coating, then put oven for curing 60 seconds of 240 DEG C into；In step (6), magnesium alloy is placed in trichloro ethylene organic solution
It ultrasonic cleaning 6 minutes, is placed into the vacuum chamber of ion beam coating equipment on fixture later, is evacuated to 0.01Pa；Step
Suddenly it in (7), is passed through argon gas and ion source Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas reaches vacuum indoor pressure simultaneously
0.7Pa is maintained, evaporation source target selects 304 stainless steels, evaporation source line is transferred to 60A, the negative bias of 20V is added to magnesium alloy
Pressure was deposited with 30 seconds, is cooled within 30 seconds the pre-deposition that a cycle carries out three periods；In step (8), by high-purity argon gas flow
It is transferred to 150ml/min, reach vacuum indoor pressure and maintains 1.3Pa, evaporation source line is transferred to 70A, and back bias voltage is transferred to
40V hydatogenesis 2 hours, obtains the stainless steel plated film of 5 μ m-thicks on the epoxy powder coating surface of magnesium alloy.So far, it is closed in magnesium
Gold surface obtains the composite coating of corrosion-resistant and surface conductance, excellent radiation performance.
Applicant has carried out performance evaluation to composite coating made from the present embodiment, the results show that composite coating not only has
There is good corrosion resistance, and surface conductance film thickness is uniform, conduction, heat dissipation performance are good.
Embodiment 3
The present embodiment is substantially the same manner as Example 1, the difference is that:
In the composite coating of the present embodiment, epoxy powder coating with a thickness of 100 μm, stainless steel plated film with a thickness of 30
μm。
In the step of the present embodiment preparation method (3), magnesium alloy is moved to 20 points of preheating in the baking oven that temperature is 180 DEG C
Clock；In step (4), epoxy powder is uniformly sprayed to the epoxy that 100 μ m-thicks are obtained in Mg alloy surface by electrostatic spray
Powder coating, then put oven for curing 120 seconds of 180 DEG C into；In step (6), magnesium alloy is placed in trichloro ethylene organic solution
Middle ultrasonic cleaning 7 minutes is placed into the vacuum chamber of ion beam coating equipment on fixture later, is evacuated to 0.006Pa；
In step (7), it is passed through argon gas and ion source Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas reaches vacuum indoor pressure
And 0.65Pa is maintained, evaporation source target selects 304 stainless steels, and evaporation source line is transferred to 55A, adds 30V's to magnesium alloy
Back bias voltage was deposited with 30 seconds, is cooled within 30 seconds the pre-deposition that a cycle carries out three periods；In step (8), by high-purity argon gas
Flow is transferred to 120ml/min, reaches vacuum indoor pressure and maintains 1.1Pa, and evaporation source line is transferred to 60A, back bias voltage tune
To 20V, hydatogenesis 12 hours, the stainless steel plated film of 30 μ m-thicks is obtained on the epoxy powder coating surface of magnesium alloy.So far, exist
Mg alloy surface obtains the composite coating of corrosion-resistant and surface conductance, excellent radiation performance.
Applicant has carried out performance evaluation to composite coating made from the present embodiment, the results show that composite coating not only has
There is good corrosion resistance, and surface conductance film thickness is uniform, conduction, heat dissipation performance are good.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, it should be appreciated by those of ordinary skill in the art that can be to of the invention
Technical solution is modified or replaced equivalently, without departing from the objective and range of technical solution of the present invention, then these modification or
Person's equivalent replacement should all cover among claims of the invention.
Claims (4)
1. a kind of preparation method of Mg alloy surface composite coating, it is characterised in that: first using clinkering processing method in magnesium alloy
Surface prepares epoxy powder coating, then stainless steel plated film, specific steps are prepared in epoxy powder coating using ion plating technique
It is as follows:
(1) surface mechanical pretreatment is carried out to magnesium alloy, and removes surface and oil contaminant, carry out blasting treatment, it is floating then to remove surface
Dirt；
(2) by magnesium alloy successively after overpickling, washing, hot blast drying；
(3) magnesium alloy is placed in 180-240 DEG C of baking oven, is preheated 10-20 minutes；
(4) epoxy powder is uniformly sprayed in preheated Mg alloy surface by electrostatic spray, it is heated to epoxy powder
It melts and after further levelling covers entire Mg alloy surface, obtains the epoxy powder coating of 100-360 μ m-thick, then by magnesium alloy
Put oven for curing 60-120 seconds of 180-240 DEG C into；
(5) taking out magnesium alloy makes it naturally cool to 90 DEG C, then cooling with 40 DEG C of water；
(6) it after cleaning up magnesium alloy, in the vacuum chamber that is placed into ion beam coating equipment on fixture, is evacuated to
0.006-0.01Pa；
(7) it is passed through argon gas and ion source Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas reaches vacuum indoor pressure simultaneously
0.6-0.7Pa is maintained, evaporation source target selects 304 stainless steels, and evaporation source line is controlled in 50-60A, added to magnesium alloy
The back bias voltage of 20-40V was deposited with 30 seconds, is cooled within 30 seconds the pre-deposition that a cycle carries out three periods；
(8) adjusting high-purity argon gas flow, evaporation source line and back bias voltage, hydatogenesis 2-12 hours, in the epoxy powder of magnesium alloy
Last coating surface obtains the stainless steel plated film of 5-40 μ m-thick, specific adjustment parameter are as follows: the adjustable range of high-purity argon gas flow is
100-150ml/min reaches vacuum indoor pressure and maintains 1.1-1.3Pa, and the adjustable range of evaporation source line is 60-
70A, the adjustable range of back bias voltage are 20-40V.
2. preparation method described in accordance with the claim 1, it is characterised in that: pickling described in step (2) is to be placed in magnesium alloy
It is impregnated 1-2 minutes in pickling solution, the hydrofluoric acid for being 70% containing 200ml concentration in every 1 liter of pickling solution, 12g fluorination
Sodium, 10g sodium bicarbonate, surplus are distilled water.
3. preparation method described in accordance with the claim 1, it is characterised in that: cleaning up described in step (6) is by magnesium alloy
It is placed in trichloro ethylene organic solution, is cleaned 5-7 minutes by supersonic wave cleaning machine.
4. preparation method described in accordance with the claim 1, it is characterised in that: the epoxy powder coating uses modified epoxy powder
Coating clinkering handles to obtain, and the modified epoxy powder coating described by weight includes following components: 60 parts of E-14 epoxy resin,
40 parts of bisphenol A type epoxy resin, 20 parts of diamino diphenyl sulfone, 10 parts of poly- azelaic acid acid anhydride, 0.12 part of 2-methylimidazole, GLP588
2 parts of levelling agent, 30 parts of heat conductive graphite.
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| US6190737B1 (en) * | 1998-02-04 | 2001-02-20 | Motorola, Inc. | Metalized elastomers |
| CN102560365A (en) * | 2010-12-29 | 2012-07-11 | 深圳富泰宏精密工业有限公司 | Processing method for electromagnetic shielding of magnesium alloy surface and magnesium alloy product |
| KR20130003126A (en) * | 2011-06-30 | 2013-01-09 | 한국기계연구원 | A surface treatment goods having a color and method of surface treatment thereof |
| CN103694644A (en) * | 2013-12-30 | 2014-04-02 | 景旺电子科技(龙川)有限公司 | Epoxy resin composition, metal-based copper-clad plate and manufacturing method thereof |
| CN105316624A (en) * | 2015-04-22 | 2016-02-10 | 温州职业技术学院 | Surface plating technique for polymer material product |
| CN106319459A (en) * | 2015-07-01 | 2017-01-11 | 泰州市玮华涂饰科技有限公司 | Novel dry type environment-friendly vacuum sputtering coating technology for aluminum alloy hub |
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2017
- 2017-02-13 CN CN201710076291.6A patent/CN106987813B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6190737B1 (en) * | 1998-02-04 | 2001-02-20 | Motorola, Inc. | Metalized elastomers |
| CN102560365A (en) * | 2010-12-29 | 2012-07-11 | 深圳富泰宏精密工业有限公司 | Processing method for electromagnetic shielding of magnesium alloy surface and magnesium alloy product |
| KR20130003126A (en) * | 2011-06-30 | 2013-01-09 | 한국기계연구원 | A surface treatment goods having a color and method of surface treatment thereof |
| CN103694644A (en) * | 2013-12-30 | 2014-04-02 | 景旺电子科技(龙川)有限公司 | Epoxy resin composition, metal-based copper-clad plate and manufacturing method thereof |
| CN105316624A (en) * | 2015-04-22 | 2016-02-10 | 温州职业技术学院 | Surface plating technique for polymer material product |
| CN106319459A (en) * | 2015-07-01 | 2017-01-11 | 泰州市玮华涂饰科技有限公司 | Novel dry type environment-friendly vacuum sputtering coating technology for aluminum alloy hub |
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