CN109136864A - A method of in magnet steel surface vacuum coated with aluminum tin composite coating - Google Patents
A method of in magnet steel surface vacuum coated with aluminum tin composite coating Download PDFInfo
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- CN109136864A CN109136864A CN201810955365.8A CN201810955365A CN109136864A CN 109136864 A CN109136864 A CN 109136864A CN 201810955365 A CN201810955365 A CN 201810955365A CN 109136864 A CN109136864 A CN 109136864A
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- magnet steel
- vacuum
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- tin
- aluminum
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 96
- 239000010959 steel Substances 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 53
- 239000011248 coating agent Substances 0.000 title claims abstract description 52
- 238000000576 coating method Methods 0.000 title claims abstract description 52
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- YVIMHTIMVIIXBQ-UHFFFAOYSA-N [SnH3][Al] Chemical compound [SnH3][Al] YVIMHTIMVIIXBQ-UHFFFAOYSA-N 0.000 title claims abstract description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000007747 plating Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000005238 degreasing Methods 0.000 claims abstract description 17
- 238000004544 sputter deposition Methods 0.000 claims abstract description 7
- 238000005498 polishing Methods 0.000 claims abstract description 3
- 230000005291 magnetic effect Effects 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000001771 vacuum deposition Methods 0.000 claims description 13
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 230000004913 activation Effects 0.000 claims description 9
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 9
- 238000011282 treatment Methods 0.000 claims description 9
- 229910000859 α-Fe Inorganic materials 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 8
- 238000005422 blasting Methods 0.000 claims description 8
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
- 229920001778 nylon Polymers 0.000 claims description 8
- 238000007733 ion plating Methods 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000007740 vapor deposition Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000007738 vacuum evaporation Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000000637 aluminium metallisation Methods 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 12
- 239000004411 aluminium Substances 0.000 description 10
- 239000000696 magnetic material Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 8
- 239000003082 abrasive agent Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005269 aluminizing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 238000001962 electrophoresis Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
-
- 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
- C23C14/165—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon by cathodic sputtering
-
- 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
- C23C14/58—After-treatment
- C23C14/5893—Mixing of deposited material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physical Vapour Deposition (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The present invention relates to a kind of methods in magnet steel surface vacuum coated with aluminum tin composite coating, including (1) successively to carry out degreasing, polishing rust-removal, high-temperature baking to magnet steel surface；(2) magnet steel is carried out vacuum aluminum-coated；(3) tin plating to magnet steel progress vacuum；(4) the advantages of magnet steel to vacuum after tin plating carries out high temperature weight curing process, method set of the invention vacuum evaporation and sputtering, solves the problems, such as binding force production and efficiency using vacuum evaporation；The compactness of tin solves the disadvantage that vacuum evaporation film layer is of poor quality, and consistency is not high, and corrosion resistance is not good enough；Equipment AM aluminum metallization tin reduces equipment cost, and entire production process unharmful substance discharge on the same stage, environmentally protective.
Description
Technical field
The present invention relates to a kind of production method of composite coating, more particularly to it is a kind of compound in magnet steel surface vacuum tin of aluminizing
The method of coating belongs to composite coating technology field.
Background technique
The ferromagnetic material that can be used for manufacturing magnetic function device is known as magnetic material, including hard magnetic material, soft magnetic materials, semihard
Magnetic material etc., wherein dosage maximum and purposes it is most wide be hard magnetic material and soft magnetic materials.Hard magnetic material and soft magnetic materials are main
Comprising ferrite, neodymium iron boron and samarium-cobalt magnet, but there are certain drawbacks in it in popularization, these magnetic materials with sky
Easily be corroded performance caused to change during gas and water tap touching, thus to its surface carry out preservative treatment be must can not
Few.
It is current in the prior art, to magnet steel surface coating anticorrosion layer method there are mainly five types of:
One, deactivation method
Deactivation method is to be passivated processing to magnet steel using phosphating solution, substance sealer, silane etc., carries out it with magnet steel
Reaction generates one layer of passivating film on its surface, achievees the effect that short-term corrosion prevention, such passivating film not can guarantee long-term anti-corrosion, and
It is also easy to produce waste water, pollutes environment.
Two, galvanoplastic
Galvanoplastic are in coats of metal such as magnet steel electroplating surface zinc, nickel, copper, but its coating wall and corner effect is big, corrosion resistance is poor,
And because plating solution contains heavy metal and organic additive, environmental pollution is serious.
Three, electroless plating method
Electroless plating method is to borrow redox to deposit one layer of metal on magnet steel surface, and such as nickel or copper, this method solves electricity
The big problem of wall and corner effect existing for plating method, but plating solution maintenance is difficult, at high cost, must be scrapped after reaching access times,
Environmental pollution is serious.
Four, spraying, electrophoresis epoxy method
Using the method for electrophoresis and spraying, one layer of organic film is formed on magnet steel surface, such as epoxy resin, phenolic resin and is changed
Property epoxy resin etc., this coating salt spray resistance is preferable, but PCT poor, is easily bubbled in test process, and molten in its solidification process
Agent volatilization, pollution environment, the health for endangering operator.
Five, physical vaporous deposition
Physical vaporous deposition has the characteristics that pass through not available for a lot of other techniques as a kind of environmentally-friendly technique
Control the available crystal grain of its technological parameter is tiny, thickness uniformly, the excellent coating of film/base junction resultant force；Simultaneously because PVD is one
Kind dry method coating technology can remain in magnet hole and in electroplating process to avoid acid or alkaline electrolyte solution when wet process plating
The shortcomings that magnet inhales hydrogen and leads to coating embrittlement.
Although being evaporated in vacuo, coating technology film forming speed is fast, and it is poor that there are film qualities, and consistency is not high, and corrosion resistance is owed
It is good, while the technical problem underlying of there is also film layers in conjunction with substrate difference.Although magnetron sputtering and arc ion plating (aip) can be
Neodymium-iron-boron permanent magnetic material surface prepares film that is high-quality, fine and close and being well combined with substrate, however they there is also depositions
Rate is slow, and equipment cost is high；Although sputtering and the technology that combines of vacuum evaporation can be complementary, it is low to solve sputtering yield, steams
The disadvantages of disadvantage of film plating layer material difference, but two sets of equipment are parallel, technique is responsible for, input cost is high, constrains magnet steel surface vacuum
Plate protective coating technique industrialization.
Patent 200810151059.5 reports a kind of composite coating of magnetron sputtering various metals；Patent
CN102031522A and CN102108510A reports a kind of spray again after vacuum aluminum-coated or parkerized compound painting
Layer；Patent CN102368438A reports a kind of composite coating etc. of spraying+Vacuum Deposition, and foregoing invention can improve vacuum coating
Production efficiency, but complex process, there are the discharges of harmful substance, pollute environment, are unfavorable for volume production industrialization.
Summary of the invention
The present invention is directed to the deficiency existing for the existing method of magnet steel surface coated with corrosion-resistant coating, provides one kind in magnet steel table
The method of face vacuum covering aluminium tin composite coating.
The technical scheme to solve the above technical problems is that
A method of in magnet steel surface vacuum coated with aluminum tin composite coating, include the following steps:
1) it pre-processes: degreasing, polishing rust-removal successively being carried out to magnet steel surface, toasted at a temperature of being placed on 100~150 DEG C
10~30min；
2) vacuum aluminum-coated: using the pretreated magnet steel surface of multi sphere ion pair carry out cleaning activation 10~30min, after adopt
Vacuum aluminum-coated, magnet steel of the acquisition surface with aluminized coating is carried out to magnet steel with vacuum coating equipment；
3) vacuum is tin plating: using the resulting surface of multi sphere ion pair step 2) there is the magnet steel of aluminized coating to carry out removing surface
Activate 10~30min, after to magnet steel carry out heating so that its surface temperature is reached 100~200 DEG C, using vacuum coating equipment to magnetic
Steel progress vacuum is tin plating, obtains the magnet steel that surface has aluminized coating and tin coating simultaneously；
4) high temperature weight curing process: it is 1x10 that the resulting magnet steel of step 3), which is placed in pressure,-2~5x10-2Pa, temperature are
Weight 10~30min of curing process is carried out under conditions of 230~320 DEG C, so that forming aluminium in the junction of aluminized coating and tin coating
Tin alloy protective layer to get.
Based on the above technical solution, the present invention can also be improved as follows.
Further, step 2) and vacuum coating equipment described in step 3) are any in vapor deposition, ion plating or sputtering
It is a kind of.
Further, pressure is evacuated to as 1.0x10 in the step 2) and step 3)-3-5.0x10-3Pa。
Further, the specific operation process in step 1) are as follows: magnet steel degreasing and is dried in alkaline defatting agent, then is used
Nylon diamond abrasive compound is processed by shot blasting, is then carried out ultrasound to it using faintly acid deashing agent at 15~30 DEG C and is removed
Ash, magnet steel after ash disposal use pure water rinsing, 60~80 DEG C of hot water treatments, finally in 100~150 DEG C of high-temperature bakings 10~
30min。
Further, the magnet steel is ferrite, neodymium iron boron magnetic body or samarium-cobalt magnet.
Produce resulting magnet steel with method of the invention, surface aluminium film with a thickness of 2~15 μm, aluminum-tin alloy film
With a thickness of 1~2 μm, tin thin film with a thickness of 2~6 μm.
The beneficial effect of preparation method of the present invention is:
1) in last high temperature weight curing schedule, mock silver not only is formd in the junction of aluminized coating and tin coating
Protective layer, while sealing of hole has been carried out to aluminized coating by the molten state of tin coating under hot conditions, enhance its magnet surface coating
Corrosion resistance and binding force；
2) method set of the invention vacuum evaporation and the advantages of sputtering, using vacuum evaporation solves binding force production
And efficiency；The compactness of tin solves that vacuum evaporation film layer is of poor quality, and consistency is not high, and what corrosion resistance was not good enough lacks
Point；Equipment AM aluminum metallization tin reduces equipment cost, and entire production process unharmful substance discharge on the same stage, environmentally protective.
3) method of the invention coating obtained has high binding force, consistency and surface hardness and excellent
Corrosion resistance is able to satisfy requirement when magnet steel is applied in a variety of environment to surfacecti proteon, and environmentally protective satisfaction industry rule
The demand of mould mass.
Detailed description of the invention
Fig. 1 is the TEM picture of 1 gained magnet steel section of embodiment；
In Fig. 1,1.: aluminized coating；2.: mock silver coating；3.: tin coating.
Specific embodiment
Principles and features of the present invention are described below in conjunction with example, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment 1:
A method of in magnet steel surface vacuum coated with aluminum tin composite coating, comprising the following steps:
(1) oil removing: respectively by ferrite, neodymium iron boron magnetic body and samarium-cobalt magnet having a size of 10*10*10mm in alkaline degreasing
It degreasing, washing and is dried in agent；
(2) derust ash disposal: above-mentioned three parts of magnet steel being processed by shot blasting using nylon diamond abrasive compound, abrasive material and magnetic
Steel quality ratio is that 2:1 carries out ultrasonic ash disposal to it using faintly acid deashing agent then at 20~30 DEG C of temperature, except lixivium is dense
Degree is 5~10%, and the magnet steel after ash disposal uses pure water rinsing, 60~80 DEG C of hot water treatments, 120 DEG C of high-temperature baking 30min；
(3) vacuum aluminum-coated: three parts of magnet steel after cleaning are vacuum aluminum-coated using vacuum coating equipment progress, vacuum chamber is taken out
Vacuum is to 4.0x10-3Pa first carries out cleaning activation 30min using multi sphere ion pair magnet steel surface, and vacuum ionic time of aluminizing is
10min, wherein the purity of aluminium is 99.99% or more, then coating chamber is maintained to cool down 40 minutes under vacuum；
(4) vacuum is tin plating: by vacuum chamber 4.0x10-3Pa carries out cleaning work using multi sphere ion pair magnet steel surface
Change 30min, magnet steel heated using evaporation boat and infrared combine, magnet steel surface temperature reaches 150 DEG C, open vacuum from
Tin plating, the time 10min of son, wherein the purity of tin is 99.99% or more；
(5) magnet steel by vacuum after tin plating is in 3x10-2Under Pa vacuum state, 230 DEG C of weight curing process 20min are carried out.
Embodiment 2:
A method of in magnet steel surface vacuum coated with aluminum tin composite coating, comprising the following steps:
(1) oil removing: respectively by ferrite, neodymium iron boron magnetic body and samarium-cobalt magnet having a size of 10*10*10mm in alkaline degreasing
It degreasing, washing and is dried in agent；
(2) derust ash disposal: above-mentioned three parts of magnet steel being processed by shot blasting using nylon diamond abrasive compound, abrasive material and magnetic
Steel quality ratio is that 2:1 carries out ultrasonic ash disposal to it using faintly acid deashing agent then at 20~30 DEG C of temperature, except lixivium is dense
Degree is 5~10%, and the magnet steel after ash disposal uses pure water rinsing, 60~80 DEG C of hot water treatments, 120 DEG C of high-temperature baking 30min；
(3) vacuum aluminum-coated: three parts of magnet steel after cleaning are vacuum aluminum-coated using vacuum coating equipment progress, vacuum chamber is taken out
Vacuum is to 5.0x10-3Pa first carries out cleaning activation 30min using multi sphere ion pair magnet steel surface, and the vacuum evaporated aluminium time is
10min, wherein the purity of aluminium is 99.99% or more, then coating chamber is maintained to cool down 40 minutes under vacuum；
(4) vacuum is tin plating: by vacuum chamber to 5.0x10-3Pa is cleared up using multi sphere ion pair magnet steel surface
30min is activated, magnet steel is heated using evaporation boat and infrared combine, magnet steel surface temperature reaches 200 DEG C, opens vacuum
Tin is deposited, time 30min, wherein the purity of tin is 99.99% or more；
(5) magnet steel by vacuum after tin plating is in 1x10-2Under Pa vacuum state, 320 DEG C of weight curing process 20min are carried out.
Embodiment 3:
A method of in magnet steel surface vacuum coated with aluminum tin composite coating, comprising the following steps:
(1) oil removing: respectively by ferrite, neodymium iron boron magnetic body and samarium-cobalt magnet having a size of 10*10*10mm in alkaline degreasing
It degreasing, washing and is dried in agent；
(2) derust ash disposal: above-mentioned three parts of magnet steel being processed by shot blasting using nylon diamond abrasive compound, abrasive material and magnetic
Steel quality ratio is that 2:1 carries out ultrasonic ash disposal to it using faintly acid deashing agent then at 20~30 DEG C of temperature, except lixivium is dense
Degree is 5~10%, and the magnet steel after ash disposal uses pure water rinsing, 60~80 DEG C of hot water treatments, 120 DEG C of high-temperature baking 30min；
(3) vacuum aluminum-coated: three parts of magnet steel after cleaning are vacuum aluminum-coated using vacuum coating equipment progress, vacuum chamber is taken out
Vacuum is to 1.0x10-3Pa first carries out cleaning activation 30min using multi sphere ion pair magnet steel surface, when vacuum magnetic-control sputtering is aluminized
Between be 60min, wherein the purity of aluminium be 99.99% or more, then maintain coating chamber under vacuum cool down 40 minutes；
(4) vacuum is tin plating: by vacuum chamber 1.0x10-3Pa carries out cleaning work using multi sphere ion pair magnet steel surface
Change 30min, magnet steel is heated using evaporation boat and infrared combine, magnet steel surface temperature reaches 100 DEG C, opens Vacuum Magnetic
Control sputters tin plating, time 10min, and wherein the purity of tin is 99.99% or more；
(5) magnet steel by vacuum after tin plating is in 5x10-2Under Pa vacuum state, 280 DEG C of weight curing process 30min are carried out.
Embodiment 4:
A method of in magnet steel surface vacuum coated with aluminum tin composite coating, comprising the following steps:
(1) oil removing: respectively by ferrite, neodymium iron boron magnetic body and samarium-cobalt magnet having a size of 10*10*10mm in alkaline degreasing
It degreasing, washing and is dried in agent；
(2) derust ash disposal: above-mentioned three parts of magnet steel being processed by shot blasting using nylon diamond abrasive compound, abrasive material and magnetic
Steel quality ratio is that 2:1 carries out ultrasonic ash disposal to it using faintly acid deashing agent then at 20~30 DEG C of temperature, except lixivium is dense
Degree is 5~10%, and the magnet steel after ash disposal uses pure water rinsing, 60~80 DEG C of hot water treatments, 120 DEG C of high-temperature baking 30min；
(3) vacuum aluminum-coated: three parts of magnet steel after cleaning are vacuum aluminum-coated using vacuum coating equipment progress, vacuum chamber is taken out
Vacuum is to 4.0x10-3Pa first carries out cleaning activation 30min using multi sphere ion pair magnet steel surface, and vacuum ionic time of aluminizing is
60min, wherein the purity of aluminium is 99.99% or more, then coating chamber is maintained to cool down 40 minutes under vacuum；
(4) vacuum is tin plating: by vacuum chamber 4.0x10-3Pa carries out cleaning work using multi sphere ion pair magnet steel surface
Change 30min, magnet steel heated using evaporation boat and infrared combine, magnet steel surface temperature reaches 150 DEG C, open vacuum from
Tin plating, the time 30min of son, wherein the purity of tin is 99.99% or more；
(5) magnet steel by vacuum after tin plating is in 3x10-2Under Pa vacuum state, 320 DEG C of weight curing process 10min are carried out.
Comparative example 1:
(1) oil removing: respectively by ferrite, neodymium iron boron magnetic body and samarium-cobalt magnet having a size of 10*10*10mm in alkaline degreasing
It degreasing, washing and is dried in agent；
(2) derust ash disposal: above-mentioned three parts of magnet steel being processed by shot blasting using nylon diamond abrasive compound, abrasive material and magnetic
Steel quality ratio is that 2:1 carries out ultrasonic ash disposal to it using faintly acid deashing agent then at 20~30 DEG C of temperature, except lixivium is dense
Degree is 5~10%, and the magnet steel after ash disposal uses pure water rinsing, 60~80 DEG C of hot water treatments, 120 DEG C of high-temperature baking 30min；
(3) vacuum aluminum-coated: three parts of magnet steel after cleaning are vacuum aluminum-coated using vacuum coating equipment progress, vacuum chamber is taken out
Vacuum is to 4.0x10-3Pa first carries out cleaning activation 30min using multi sphere ion pair magnet steel surface, and vacuum ionic time of aluminizing is
60min, wherein the purity of aluminium is 99.99% or more, then coating chamber is maintained to cool down 40 minutes under vacuum, obtains the production of comparative example 1
Product.
Comparative example 2:
(1) oil removing: respectively by ferrite, neodymium iron boron magnetic body and samarium-cobalt magnet having a size of 10*10*10mm in alkaline degreasing
It degreasing, washing and is dried in agent；
(2) derust ash disposal: above-mentioned three parts of magnet steel being processed by shot blasting using nylon diamond abrasive compound, abrasive material and magnetic
Steel quality ratio is that 2:1 carries out ultrasonic ash disposal to it using faintly acid deashing agent then at 20~30 DEG C of temperature, except lixivium is dense
Degree is 5~10%, and the magnet steel after ash disposal uses pure water rinsing, 60~80 DEG C of hot water treatments, 120 DEG C of high-temperature baking 30min；
(3) vacuum aluminum-coated: three parts of magnet steel after cleaning are vacuum aluminum-coated using vacuum coating equipment progress, vacuum chamber is taken out
Vacuum is to 5.0x10-3Pa first carries out cleaning activation 30min using multi sphere ion pair magnet steel surface, and the vacuum evaporated aluminium time is
10min, wherein the purity of aluminium is 99.99% or more, then coating chamber is maintained to cool down 40 minutes under vacuum, obtains the production of comparative example 2
Product.
The properties of product test result of Examples 1 to 4 and comparative example 1,2 is as shown in table 1.
The properties of product test result of 1 Examples 1 to 4 of table and comparative example 1,2
SST: under neutrallty condition, 5% sodium chloride solution under the conditions of 35 DEG C, is persistently sprayed at product surface with mist.
PCT:2 standard atmospheric pressure, the high temperature and pressure boiling test of 100% humidity.
SST and PCT is our professional standard terms, and without explaining, the duration is longer, and corrosion resistance coating is better.
By the test result in table 1 it is found that compared with prior art, the present invention corrosion resistance and close colloidality are obviously improved,
Significant change does not occur for its coating binding force.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of method in magnet steel surface vacuum coated with aluminum tin composite coating, which comprises the steps of:
1) pre-process: degreasing, polishing rust-removal are successively carried out to magnet steel surface, at a temperature of being placed on 100~150 DEG C toast 10~
30min；
2) vacuum aluminum-coated: 10~30min of cleaning activation is carried out using the pretreated magnet steel surface of multi sphere ion pair, it is rear using true
Empty filming equipment carries out vacuum aluminum-coated, magnet steel of the acquisition surface with aluminized coating to magnet steel；
3) vacuum is tin plating: using the resulting surface of multi sphere ion pair step 2) there is the magnet steel of aluminized coating to carry out removing surface activation
10~30min, after to magnet steel carry out heating so that its surface temperature is reached 100~200 DEG C, using vacuum coating equipment to magnet steel into
Row vacuum is tin plating, obtains the magnet steel that surface has aluminized coating and tin coating simultaneously；
4) high temperature weight curing process: it is 1x10 that the resulting magnet steel of step 3), which is placed in pressure,-2~5x10-2Pa, temperature be 230~
Weight 10~30min of curing process is carried out under conditions of 320 DEG C, so that forming mock silver in the junction of aluminized coating and tin coating
Protective layer to get.
2. the method according to claim 1, wherein the magnet steel is ferrite, neodymium iron boron magnetic body or SmCo magnetic
Body.
3. method according to claim 1 or 2, which is characterized in that vacuum coating described in step 2) and step 3) is set
Any one standby in vapor deposition, ion plating or sputtering.
4. method according to claim 1 or 2, which is characterized in that be evacuated to pressure in the step 2) and step 3)
For 1.0x10-3-5.0x10-3Pa。
5. method according to claim 1 or 2, which is characterized in that the specific operation process in step 1) are as follows: magnet steel exists
It degreasing and dries in alkaline defatting agent, then is processed by shot blasting using nylon diamond abrasive compound, then at 15~30 DEG C,
Ultrasonic ash disposal is carried out to it using faintly acid deashing agent, the magnet steel after ash disposal use pure water rinsing, 60~80 DEG C of hot water treatments, most
Afterwards in 100~150 DEG C of 10~30min of high-temperature baking.
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