CN106987813A - 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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- CN106987813A CN106987813A CN201710076291.6A CN201710076291A CN106987813A CN 106987813 A CN106987813 A CN 106987813A CN 201710076291 A CN201710076291 A CN 201710076291A CN 106987813 A CN106987813 A CN 106987813A
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- Prior art keywords
- magnesium alloy
- alloy
- fbe
- composite coating
- coating
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 108
- 239000011248 coating agent Substances 0.000 title claims abstract description 65
- 238000000576 coating method Methods 0.000 title claims abstract description 65
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 29
- 239000010935 stainless steel Substances 0.000 claims abstract description 24
- 238000007733 ion plating Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 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
- 239000000843 powder Substances 0.000 claims description 24
- 239000004593 Epoxy Substances 0.000 claims description 20
- 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 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-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 5
- 238000001816 cooling Methods 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
- 238000012545 processing Methods 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
- 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 description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 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
- 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
- 239000002253 acid Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- -1 azelaic acid acid anhydride Chemical class 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 3
- 150000004649 carbonic acid derivatives Chemical class 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
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000009996 mechanical pre-treatment Methods 0.000 claims description 2
- 150000002118 epoxides Chemical class 0.000 claims 1
- 238000003682 fluorination reaction Methods 0.000 claims 1
- 239000006185 dispersion Substances 0.000 abstract description 8
- 230000005855 radiation Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000010963 304 stainless steel Substances 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
- 230000037396 body weight Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 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
- 239000011780 sodium chloride Substances 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical class [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 235000013024 sodium fluoride Nutrition 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 235000019786 weight gain Nutrition 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 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 group [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
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- LQHZJYFIRFRDKF-UHFFFAOYSA-N gold magnesium Chemical compound [Mg].[Au] LQHZJYFIRFRDKF-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 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
- 230000035699 permeability Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 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
Landscapes
- 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 coating and its preparation method and application, belong to technical field of material surface treatment, the composite coating includes the FBE that Mg alloy surface is overlying on after being handled by clinkering and the stainless steel plated film that FBE surface is deposited on using ion plating technique, the thickness of the FBE is 100 360 μm, and the thickness of the stainless steel plated film is 5 40 μm.The preparation method of the composite coating is first to prepare FBE in Mg alloy surface using clinkering processing method, then stainless steel plated film is prepared on FBE using ion plating technique.The Mg alloy surface composite coating of the present invention can not only improve the decay resistance of magnesium alloy workpiece, and assign the good conduction of workpiece surface and heat dispersion, magnesium alloy can be made to play its excellent performance in the industry, can be especially applied as the functional coating on magnesium alloy heat radiation piece surface.
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 preparation
Methods and applications, the problem of solving magnesium alloy workpiece poor corrosion resistance, and assign the good conduction of workpiece surface and thermal diffusivity
Energy.
Background technology
Magnesium alloy is a kind of aviation industry light-duty alloy material with the most use, and such as substituting aluminium with Mg alloy castings closes
Golden casting, in design strength requirement under the same conditions, can make the weight saving 25% ~ 30% of workpiece.And magnesium alloy possesses perhaps
Many excellent characteristics, such as specific strength, specific stiffness are high, perfect heat-dissipating, and with good electromagnetic wave shielding, damping and cutting
Processability, is easily recycled simultaneously, and environment is had no adverse effects, therefore magnesium alloy becomes a kind of particularly important structural material,
Application in recent years in fields such as Aero-Space, traffic, optical instrument, electronics industry, automobiles is increasingly extensive, and annual growth rate is about
20%。
But the chemism of magnesium is big, easily corrodes, has a strong impact on it and be used for a long time in some crucial occasions, hindered
The industrial applications of magnesium-alloy material and popularization.By the inherent characteristic of magnesium is determined, its is improved by alloying corrosion-resistant
The effect of performance is limited, so magnesium alloy workpiece is providing protection using certain corrosion-protected surface processing is preceding had to pass through,
Magnesium alloy can be just set to play its excellent performance in the industry.In addition, not only to need magnesium alloy to have superior resistance to for some occasions
Corrosion energy, also requires that its surface must possess good conductive radiator performance, magnesium alloy substrate is once produced in use
Electrostatic, if electrostatic export can not will be caused serious consequence by erosion shield in time, therefore, the corrosion-resistant and surface conductance of exploitation,
The good Mg alloy surface composite coating of heat dispersion is significant to the practical application of magnesium alloy.
The content of the invention
The technical problems to be solved by the invention are to overcome above mentioned problem, and provide a kind of Mg alloy surface composite coating
And its preparation method and application, the composite coating can improve the decay resistance of magnesium alloy workpiece, and it is good to assign workpiece surface
Good conduction and heat dispersion, 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：Epoxy including being overlying on Mg alloy surface after being handled by clinkering
Powder coating and the stainless steel plated film that FBE surface is deposited on using ion plating technique, the FBE
Thickness is 100-360 μm, and the thickness of the stainless steel plated film is 5-40 μm.FBE insulate and with good corrosion resistant
Corrosion energy, stainless steel plated film has good conduction and heat dispersion.
In above-mentioned Mg alloy surface composite coating, the FBE uses modified epoxy powder coating clinkering
Processing is obtained, and 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, poly- 10 parts of azelaic acid acid anhydride, 0.12 part of 2-methylimidazole, GLP588 levelling agents 2
Part, 30 parts of conductive graphite.
Present invention also offers a kind of preparation method of above-mentioned Mg alloy surface composite coating, first using clinkering processing method
FBE is prepared in Mg alloy surface, then stainless steel plated film is prepared on FBE using ion plating technique,
Comprise the following steps that：
（1）Surface mechanical pretreatment is carried out to magnesium alloy, and removes surface and oil contaminant, blasting treatment is carried out, surface is then removed and floats
Dirt；
（2）Magnesium alloy is sequentially passed through after pickling, washing, hot blast drying；
（3）Magnesium alloy is placed in 180-240 DEG C of baking oven, preheated 10-20 minutes；
（4）Epoxy powder is uniformly sprayed in preheated Mg alloy surface by electrostatic spray, treats that epoxy powder is heated
Melt and further levelling is covered after whole Mg alloy surface, obtain the FBE of 100-360 μ m-thicks, 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 with 40 DEG C of water cooling；
（6）After magnesium alloy is cleaned up, it is placed into the vacuum chamber of ion beam coating equipment, is evacuated on fixture
0.006-0.01Pa；
（7）It is passed through argon gas and ion gun Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas makes vacuum indoor pressure reach 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
20-40V back bias voltage, was deposited with 30 seconds, is cooled within 30 seconds the pre-deposition that a cycle carries out three cycles；
（8）Adjust 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-thicks, and specific regulation parameter is：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 is 20-40V.
In above-mentioned preparation method, step（2）Described in pickling be that magnesium alloy is placed in Acidwash solution to soak 1-2 point
Containing the hydrofluoric acid that 200ml concentration is 70% in clock, every 1 liter of Acidwash solution, 12g sodium fluorides, 10g sodium acid carbonates, surplus is
Distilled water.
In above-mentioned preparation method, step（6）Described in clean up be that magnesium alloy is placed in into trichloro ethylene is organic molten
In liquid, cleaned 5-7 minutes by supersonic wave cleaning machine.
In addition, present invention also offers a kind of application of above-mentioned Mg alloy surface composite coating, applying low in operating temperature
In 180 DEG C, require in workpiece is lightweight and surface must be conductive cooling system, especially as magnesium alloy heat radiation piece surface
Functional coating is used.
Advantages of the present invention and beneficial effect are：
1st, in composite coating of the invention, FBE insulate and with good corrosion-resistant, ageing-resistant and heat conductivility,
Stainless steel plated film has good conduction and heat dispersion, therefore the composite coating can improve the corrosion resistance of magnesium alloy workpiece
Can, and the good conduction of workpiece surface and heat dispersion are assigned, magnesium alloy can be made to play its excellent performance in the industry.
2nd, the present invention prepares FBE using clinkering processing method in Mg alloy surface 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 on FBE using ion plating technique so that plated film and ring
The bond strength of oxygen powder coating is high, and treatment technology is reliable, is easy to produce in enormous quantities, coating quality is easily controlled.
Brief description of the drawings
Fig. 1 is the structural representation of composite coating in the present invention.
Fig. 2 is weightening curve of the FBE 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 alloys in the embodiment of the present invention 1.
Embodiment
In conjunction with embodiment, the present invention is further illustrated：
As shown in figure 1, the Mg alloy surface composite coating of the present invention includes being overlying on the surface of magnesium alloy 10 after handling by clinkering
FBE 20 and the stainless steel plated film 30 that the surface of FBE 20 is deposited on using ion plating technique, the epoxy
The thickness of powder coating 20 is 100-360 μm, and the thickness of the stainless steel plated film 30 is 5-40 μm.
Embodiment 1
The epoxy powder that the Mg alloy surface composite coating of the present embodiment includes being overlying on Mg alloy surface by clinkering after handling is applied
Layer and the stainless steel plated film that FBE surface is deposited on using ion plating technique, the thickness of FBE is 360 μ
M, the thickness of stainless steel plated film is 40 μm.Wherein, FBE is obtained using modified epoxy powder coating clinkering processing, is pressed
Modified epoxy powder coating described in parts by weight meter includes following components：60 parts of E-14 epoxy resin, bisphenol A type epoxy resin 40
Part, 20 parts of diamino diphenyl sulfone, poly- 10 parts of azelaic acid acid anhydride, 0.12 part of 2-methylimidazole, 2 parts of GLP588 levelling agents, heat conduction stone
30 parts of ink.
The preparation method of the Mg alloy surface composite coating of the present embodiment is first using clinkering processing method in magnesium alloy table
Face prepares FBE, then stainless steel plated film is prepared on FBE using ion plating technique, and specific steps are such as
Under：
（1）After the pretreatment such as polishing through mechanical lapping to Mg alloy surface, surface and oil contaminant is removed, blasting treatment is carried out, and remove
Surface floating dust；
（2）Magnesium alloy is sequentially passed through after pickling, washing, hot blast drying, pickling is that magnesium alloy is placed in Acidwash solution to soak
1-2 minutes, the hydrofluoric acid that 200ml concentration is 70%, 12g sodium fluorides, 10g sodium acid carbonates, surplus are contained in every 1 liter of Acidwash solution
For distilled water；
（3）Magnesium alloy is moved in the baking oven that temperature is 240 DEG C and preheated 10 minutes；
（4）Above-mentioned modified epoxy powder coating is taken, is first fully fluidized in fluid bed, powder is then made by electrostatic gun
Grain is negatively charged, is uniformly adhered in preheated Mg alloy surface.The epoxy powder for sticking to preheating Mg alloy surface is heated
Change and flow, further levelling covers whole Mg alloy surface, particularly recess, coating is combined closely with magnesium alloy, most
Limits reduce hole, and the FBE of 360 μ m-thicks is obtained in Mg alloy surface.Put magnesium alloy into 210 DEG C afterwards
Oven for curing 80 seconds；
（5）Taking out magnesium alloy makes it naturally cool to 90 DEG C, then with 40 DEG C of water cooling；
（6）Magnesium alloy is placed in trichloro ethylene organic solution, cleaned 5 minutes by supersonic wave cleaning machine, afterwards mounted in fixture
On be placed into the vacuum chamber of ion beam coating equipment, be evacuated to 0.009Pa；
（7）It is passed through argon gas and ion gun Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas makes vacuum indoor pressure reach simultaneously
0.6Pa is maintained, evaporation source target selects 304 stainless steels, evaporation source line is transferred into 50A, 40V negative bias 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 cycles；
（8）High-purity argon gas flow is transferred to 100ml/min, vacuum indoor pressure is reached and maintains 1.2Pa, evaporation source line
65A is transferred to, back bias voltage is transferred to 20V, and hydatogenesis 10 hours obtains 40 μ m-thicks not on the FBE surface of magnesium alloy
Become rusty steel plated film.So far, in the corrosion-resistant and surface conductance of Mg alloy surface acquisition, the composite coating of excellent radiation performance.
The present embodiment prepares composite coating using magnesium alloy heat radiation piece as base material.
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 fin, coating result is all fine.The insulating properties of coating, any two points are determined using ZC-7 type megameters
Between resistance all reached more than 10,000 megaohms, this shows that the obtained coating porosity of clinkering processing is extremely low, and thickness is highly uniform.
The decay resistance that applicant handles obtained FBE to the present embodiment through clinkering passes through soak test
Evaluated, specific method of testing is：The sample of External fusion bonded epoxy coating on magnesium alloy heat radiation piece is put into 3.5%vol's
In NaCl solution, 60 DEG C of insulations are stood, and are taken out, are determined with a ten thousandth balance when soaking 2 days, 4 days, 15 days and 25 days respectively
Sample weight simultaneously calculates rate of body weight gain.As a result it is as shown in Figure 2, it can be seen that the absorption salt solution rate of body weight gain of FBE until
2% still is below at 25 days, this shows that coating has extremely superior decay resistance in itself.
Applicant is determined by MS8268 universal meters to the electric conductivity of composite coating made from the present embodiment.Knot
Fruit shows that the resistance between fin any two points is designated as zero, and this shows, 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 anti-wear performance and corrosion resistance are presented
Can, as shown in figure 3, the anti-wear performance of plated film is substantially better than M60 magnesium alloys.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, and its difference is：
In the composite coating of the present embodiment, the thickness of FBE is 200 μm, and the thickness of stainless steel plated film is 5 μm.
The step of the present embodiment preparation method（3）In, magnesium alloy is moved to 20 points of preheating in the baking oven that temperature is 200 DEG C
Clock；Step（4）In, epoxy powder is uniformly sprayed in Mg alloy surface by electrostatic spray, the epoxy of 200 μ m-thicks is obtained
Powder coating, then put into oven for curing 60 seconds of 240 DEG C；Step（6）In, magnesium alloy is placed in trichloro ethylene organic solution
Ultrasonic wave is cleaned 6 minutes, is placed into afterwards on fixture in the vacuum chamber of ion beam coating equipment, is evacuated to 0.01Pa；Step
Suddenly（7）In, it is passed through argon gas and ion gun Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas makes vacuum indoor pressure reach simultaneously
0.7Pa is maintained, evaporation source target selects 304 stainless steels, evaporation source line is transferred into 60A, 20V negative bias 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 cycles；Step（8）In, by high-purity argon gas flow
150ml/min is transferred to, vacuum indoor pressure is reached and maintains 1.3Pa, evaporation source line is transferred to 70A, back bias voltage is transferred to
40V, hydatogenesis 2 hours obtains the stainless steel plated film of 5 μ m-thicks on the FBE surface of magnesium alloy.So far, closed in magnesium
Gold surface obtains corrosion-resistant and surface conductance, the composite coating of excellent radiation performance.
Applicant has carried out performance evaluation to composite coating made from the present embodiment, as a result shows, composite coating not only has
There is good decay resistance, and surface conductance film thickness is uniform, and conductive, heat dispersion is good.
Embodiment 3
The present embodiment is substantially the same manner as Example 1, and its difference is：
In the composite coating of the present embodiment, the thickness of FBE is 100 μm, and the thickness of stainless steel plated film is 30 μm.
The step of the present embodiment preparation method（3）In, magnesium alloy is moved to 20 points of preheating in the baking oven that temperature is 180 DEG C
Clock；Step（4）In, epoxy powder is uniformly sprayed in Mg alloy surface by electrostatic spray, the epoxy of 100 μ m-thicks is obtained
Powder coating, then put into oven for curing 120 seconds of 180 DEG C；Step（6）In, magnesium alloy is placed in trichloro ethylene organic solution
Middle ultrasonic wave is cleaned 7 minutes, is placed into afterwards on fixture in the vacuum chamber of ion beam coating equipment, is evacuated to 0.006Pa；
Step（7）In, it is passed through argon gas and ion gun 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, evaporation source line is transferred into 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 cycles；Step（8）In, 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, and back bias voltage is adjusted
To 20V, hydatogenesis 12 hours obtains the stainless steel plated film of 30 μ m-thicks on the FBE surface of magnesium alloy.So far, exist
Mg alloy surface obtains corrosion-resistant and surface conductance, the composite coating of excellent radiation performance.
Applicant has carried out performance evaluation to composite coating made from the present embodiment, as a result shows, composite coating not only has
There is good decay resistance, and surface conductance film thickness is uniform, and conductive, heat dispersion is good.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it should be appreciated by those of ordinary skill in the art that can be to the present invention's
Technical scheme is modified or equivalent substitution, without departing from the objective and scope of technical solution of the present invention, then these modifications or
Person's equivalent substitution all should cover among the claims of the present invention.
Claims (6)
1. a kind of Mg alloy surface composite coating, it is characterised in that：Ring including being overlying on Mg alloy surface after being handled by clinkering
Oxygen powder coating and the stainless steel plated film that FBE surface is deposited on using ion plating technique, the FBE
Thickness be 100-360 μm, the thickness of the stainless steel plated film is 5-40 μm.
2. according to the Mg alloy surface composite coating described in claim 1, it is characterised in that：The FBE, which is used, to be changed
Property epoxide powder coating clinkering processing obtain, modified epoxy powder coating described by weight includes following components：E-14 rings
60 parts of oxygen tree fat, 40 parts of bisphenol A type epoxy resin, 20 parts of diamino diphenyl sulfone, poly- 10 parts of azelaic acid acid anhydride, 2-methylimidazole
0.12 part, 2 parts of GLP588 levelling agents, 30 parts of conductive graphite.
3. a kind of preparation method of Mg alloy surface composite coating as claimed in claim 1 or 2, it is characterised in that：First use
Clinkering processing method prepares FBE in Mg alloy surface, then is prepared using ion plating technique on FBE
Stainless steel plated film, is comprised the following steps that：
（1）Surface mechanical pretreatment is carried out to magnesium alloy, and removes surface and oil contaminant, blasting treatment is carried out, surface is then removed and floats
Dirt；
（2）Magnesium alloy is sequentially passed through after pickling, washing, hot blast drying；
（3）Magnesium alloy is placed in 180-240 DEG C of baking oven, preheated 10-20 minutes；
（4）Epoxy powder is uniformly sprayed in preheated Mg alloy surface by electrostatic spray, treats that epoxy powder is heated
Melt and further levelling is covered after whole Mg alloy surface, obtain the FBE of 100-360 μ m-thicks, 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 with 40 DEG C of water cooling；
（6）After magnesium alloy is cleaned up, it is placed into the vacuum chamber of ion beam coating equipment, is evacuated on fixture
0.006-0.01Pa；
（7）It is passed through argon gas and ion gun Bombardment and cleaning is carried out to magnesium alloy, then being passed through high-purity argon gas makes vacuum indoor pressure reach 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
20-40V back bias voltage, was deposited with 30 seconds, is cooled within 30 seconds the pre-deposition that a cycle carries out three cycles；
（8）Adjust 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-thicks, and specific regulation parameter is：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 is 20-40V.
4. according to the preparation method described in claim 3, it is characterised in that：Step（2）Described in pickling be to be placed in magnesium alloy
Soaked 1-2 minutes in Acidwash solution, containing the hydrofluoric acid that 200ml concentration is 70% in every 1 liter of Acidwash solution, 12g fluorinations
Sodium, 10g sodium acid carbonates, surplus is distilled water.
5. according to the preparation method described in claim 3, it is characterised in that：Step（6）Described in clean up be by magnesium alloy
It is placed in trichloro ethylene organic solution, is cleaned 5-7 minutes by supersonic wave cleaning machine.
6. a kind of application of Mg alloy surface composite coating as claimed in claim 1 or 2, it is characterised in that：Apply in work
Temperature less than 180 DEG C, require in workpiece is lightweight and surface must be conductive cooling system.
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Effective date of registration: 20190925 Address after: 317515 Tutan Industrial Agglomeration Point, Shiqiaotou Town, Wenling City, Zhejiang Province (in Mitsubishi NC Machine Tool Factory, Wenling City) Patentee after: TAIZHOU ZHONGKE PUERNI COATING TECHNOLOGY Co.,Ltd. Address before: Stonebridge town Wenling City, Taizhou Tutan industrial accumulation of 317515 cities in Zhejiang Province Co-patentee before: Yu Zhiming Patentee before: Wu Jianyong |
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