CN110983333A - Neodymium-iron-boron composite coating and preparation method and application thereof - Google Patents
Neodymium-iron-boron composite coating and preparation method and application thereof Download PDFInfo
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- CN110983333A CN110983333A CN201911247003.4A CN201911247003A CN110983333A CN 110983333 A CN110983333 A CN 110983333A CN 201911247003 A CN201911247003 A CN 201911247003A CN 110983333 A CN110983333 A CN 110983333A
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- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 98
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000002131 composite material Substances 0.000 title claims abstract description 60
- 239000011248 coating agent Substances 0.000 title claims abstract description 31
- 238000000576 coating method Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000007747 plating Methods 0.000 claims abstract description 107
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000005240 physical vapour deposition Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000001771 vacuum deposition Methods 0.000 claims abstract description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 41
- 239000010949 copper Substances 0.000 claims description 27
- 239000000758 substrate Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 16
- 239000011701 zinc Substances 0.000 claims description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 238000011282 treatment Methods 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910001080 W alloy Inorganic materials 0.000 claims description 5
- PDYXSJSAMVACOH-UHFFFAOYSA-N [Cu].[Zn].[Sn] Chemical compound [Cu].[Zn].[Sn] PDYXSJSAMVACOH-UHFFFAOYSA-N 0.000 claims description 5
- JPNWDVUTVSTKMV-UHFFFAOYSA-N cobalt tungsten Chemical compound [Co].[W] JPNWDVUTVSTKMV-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims 2
- 229910001260 Pt alloy Inorganic materials 0.000 claims 1
- 229910001297 Zn alloy Inorganic materials 0.000 claims 1
- 229910052763 palladium Inorganic materials 0.000 claims 1
- 229910052703 rhodium Inorganic materials 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 279
- 239000011247 coating layer Substances 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 10
- 150000003839 salts Chemical class 0.000 abstract description 9
- 239000007921 spray Substances 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 229910001252 Pd alloy Inorganic materials 0.000 description 2
- 229910000629 Rh alloy Inorganic materials 0.000 description 2
- 229910000929 Ru alloy Inorganic materials 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000583 Nd alloy Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
Abstract
The invention provides a neodymium iron boron composite coating, which comprises a neodymium iron boron base material layer, at least one water coating layer positioned on the upper surface of the neodymium iron boron base material layer, and at least one PVD vacuum coating layer positioned on the upper surface of the water coating layer. This neodymium iron boron composite coating utilizes the synergism of water coating and PVD vacuum coating for the hole in two different plating species staggers, reduces the porosity, improves neodymium iron boron composite coating's density, and has higher hardness, improves neodymium iron boron composite coating's wearability and corrosion resistance, and neodymium iron boron composite coating's salt spray test can reach more than 144 hours, and hardness exceeds 3000HV, thereby has improved the reliability and the durable life of wearable product (earphone, wrist-watch, cell-phone, adapter). The application also provides a preparation method and application of the neodymium iron boron composite plating layer.
Description
Technical Field
The invention relates to the technical field of neodymium iron boron, and particularly relates to a neodymium iron boron composite plating layer and a preparation method thereof.
Background
The neodymium-iron-boron magnetic material is an alloy of neodymium, iron oxide and the like, has the characteristics of excellent machinability, high magnetic energy product, high coercive force, high residual magnetism and the like, and is widely applied to the fields of electronics, automobiles, computers, electric power, machinery, energy, environmental protection, national defense, medical appliances and the like. The neodymium iron boron permanent magnet material contains a large amount of rare earth, and the material is easy to react with water, oxygen and the like, so that the material needs to be plated before being processed into a finished product, the existing protection treatments such as Ni plating, epoxy plating, Zn plating, small-product barrel plating and the like are carried out in conventional treatment, the neutral salt spray resistance is basically not more than 200H, the reason is mainly that the metal plating layer is easily soaked by chloride ions in a neutral salt spray experiment, so the protection time is short, although the plating layer structure is obtained on the surface layer of the neodymium iron boron material, the oxidation and chemical corrosion of a neodymium iron boron magnet cannot be thoroughly prevented, the wear resistance and the hardness performance of the neodymium iron boron permanent magnet material are still lower, and the requirements of high corrosion resistance, high wear resistance and high hardness of.
Therefore, there is a need to provide a neodymium iron boron composite plating layer and a preparation method thereof to solve the above problems.
Disclosure of Invention
One of the objects of the present invention is to provide a neodymium iron boron composite plating layer with excellent wear resistance and corrosion resistance.
The invention also aims to provide the neodymium iron boron composite plating layer with excellent wear resistance and corrosion resistance.
The invention also aims to provide the application of the neodymium iron boron composite plating layer in the wearable product.
In order to achieve the purpose, the invention provides a neodymium iron boron composite coating, which comprises a neodymium iron boron base material layer, at least one water coating layer positioned on the upper surface of the neodymium iron boron base material layer, and at least one PVD vacuum coating layer positioned on the upper surface of the water coating layer. That is to say, neodymium iron boron substrate layer upper surface is equipped with one deck or multilayer water coating, and water coating upper surface is equipped with one deck or multilayer PVD vacuum coating.
Compared with the prior art, the neodymium iron boron composite coating of this application, water coating and PVD vacuum coating have set gradually on the neodymium iron boron substrate layer, utilize water coating and PVD vacuum coating's synergism, make the hole in two different plating types stagger, reduce the porosity, improve the density of neodymium iron boron composite coating, and have higher hardness, improve the wearability and the corrosion resistance of neodymium iron boron composite coating, the salt spray test of neodymium iron boron composite coating can reach more than 144 hours, hardness exceeds 3000HV, thereby the reliability and the durable age of wearable product (earphone, wrist-watch, cell-phone, adapter) have been improved.
Correspondingly, the invention also provides a preparation method of the neodymium iron boron composite plating layer, which comprises the following steps:
(1) providing a neodymium iron boron base material, and performing water plating treatment on the surface of the neodymium iron boron base material;
(2) and performing PVD vacuum plating treatment on the neodymium iron boron base material subjected to the water plating treatment.
Correspondingly, the invention also provides application of the neodymium iron boron composite plating layer in wearable products. Wearable products such as earphones, watches, mobile phones, adapters, and the like.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the neodymium-iron-boron composite plating layer of the invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the neodymium-iron-boron composite plating layer according to the invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the neodymium-iron-boron composite plating layer of the invention.
Fig. 4 is a schematic structural diagram of a fourth embodiment of the neodymium-iron-boron composite plating layer according to the invention.
Fig. 5 is a schematic structural diagram of a fifth embodiment of the neodymium-iron-boron composite plating layer according to the invention.
Fig. 6 is a schematic structural diagram of a sixth embodiment of the neodymium-iron-boron composite plating layer according to the invention.
Fig. 7 is a schematic structural diagram of a sixth embodiment of the neodymium-iron-boron composite plating layer according to the invention.
Detailed Description
The invention provides a neodymium iron boron composite coating, which comprises a neodymium iron boron base material layer, at least one water coating layer positioned on the upper surface of the neodymium iron boron base material layer, and at least one PVD vacuum coating layer positioned on the upper surface of the water coating layer. That is to say, neodymium iron boron substrate layer upper surface is equipped with one deck or multilayer water coating, and water coating upper surface is equipped with one deck or multilayer PVD vacuum coating.
Preferably, the water plating layer comprises a first water plating layer, and the first water plating layer is selected from one of a nickel layer, a zinc layer or a copper layer.
Preferably, at least one second water-plating layer is disposed on the upper surface of the first water-plating layer, and the second water-plating layer is selected from one of a Cu layer, a Ni layer, a Cr layer, an Ag layer, a Pd layer, a Co layer, a Rh layer, a Ru layer, an Au layer, and a Cu, Ni, Cr, Ag, Pd, Rh, Ru, and Au alloy layer. That is, the second water-based plating layer may be one layer or may be a plurality of layers. The second water coating is selected as a single metal material layer or an alloy layer, the single metal layer is selected as one of a Cu layer, a Ni layer, a Cr layer, an Ag layer, a Pd layer, a Co layer, an Rh layer and Ru, and the alloy layer is selected as a Cu, Ni, Cr, Ag, Pd, Rh and Ru alloy layer.
Preferably, the PVD vacuum coating is selected from Cr layer, W layer, Al2O3Layer, Ti layer, Zr layer, TiN layer, TiCN layer, SiO2Layer, Au layer. At least one PVD vacuum coating layer is arranged on the upper surface of the water coating layer, namely, the PVD vacuum coating layer can be one layer or multiple layers. For example, PVD vacuum coating is a layer: a Cr layer; also for example, PVD vacuum coating is two layers: a Cr layer and a W layer, and the W layer is positioned on the upper surface of the Cr layer.
Specifically, the water coating is a composite layer and sequentially comprises a Zn layer, a copper-tin-zinc layer and a cobalt-tungsten alloy layer from bottom to top; the PVD vacuum coating is a composite layer and sequentially comprises a Cr layer, a W layer and a TiN layer from bottom to top. That is to say, this neodymium iron boron composite coating includes the neodymium iron boron substrate layer and locates the Zn layer, copper TiN zinc layer, cobalt tungsten alloy layer, Cr layer, W layer, TiN layer of neodymium iron boron substrate layer in proper order, and wherein Zn layer, copper TiN zinc layer, cobalt tungsten alloy layer belong to the water coating that adopts the aqueous solution to electroplate to obtain, and Cr layer, W layer, TiN layer adopt PVD vacuum coating that PVD vacuum plating technique obtained.
Specifically, the water plating layer is a composite layer and sequentially comprises a Ni layer, a Cu layer, a Ni layer and a RhRu alloy layer from bottom to top; the PVD vacuum plating layer is a composite layer and sequentially comprises a Cr layer, a W layer and an Au layer from bottom to top.
Specifically, the upper surface of the neodymium iron boron base material layer is sequentially provided with a Ni layer, a Cu layer, a Ni layer, a NiP layer, an Au layer, a Pt layer and a Cr layer; the Cr layer is the PVD vacuum plating layer, and the Ni layer, the Cu layer, the Ni layer, the NiP layer, the Au layer and the Pt layer are the water plating layer.
Specifically, the water plating layer is a composite layer and sequentially comprises a Cu layer, a copper-tin-zinc layer and a cobalt-tungsten alloy layer from bottom to top; the PVD vacuum plating layer is a composite layer and sequentially comprises a Cr layer, a W layer and an Au layer from bottom to top.
Preferably, the thickness of the water coating is 20 um-150 um; the thickness of the PVD vacuum plating layer is 0.2 um-150 um. For example, the thickness of the water-plated layer is 20um, 40um, 60um, 80um, 100um, 120um, 140um, 150 um; the thickness of PVD vacuum coating is 0.2um, 2um, 4um, 6um, 8um, 10um, 20um, 40um, 60um, 80um, 100um, 120um, 140um, 150 um. The thickness of the specific coating is selected according to actual needs.
The water plating layer is obtained by water solution electroplating, the plating layer or alloy plating layer of the metal can be obtained by adopting water plating solution containing different metals, and the water plating technology of how to carry out the metal plating layer or the alloy plating layer is common technology in the field and is not described in detail here.
The technical solution of the present application is illustrated by the following specific examples:
example 1
Referring to fig. 1, the neodymium iron boron composite plating layer of the present application includes a neodymium iron boron base material layer 10a, an upper surface of the neodymium iron boron base material layer 10a is sequentially provided with a Ni layer 20a, a Cu layer 30a, a Ni layer 40a, a NiP layer 50a, and a Cr layer 60a, wherein the Ni layer 20a located at the bottom is deposited on the upper surface of the neodymium iron boron base material layer 10a by a water plating technique, the Cr layer 60a is obtained by a PVD vacuum plating technique, and the middle Cu layer 30a, the Ni layer 40a, and the NiP layer 50a are obtained by a water plating technique. The thickness of the Ni layer 20a was 3 μm, the thickness of the Cu layer 30a was 5 μm, the thickness of the Ni layer 40a was 3 μm, the thickness of the NiP layer 50a was 5 μm, and the thickness of the Cr layer 60a was 0.3 μm.
Example 2
Referring to fig. 2, the neodymium iron boron composite plating layer of the present application includes a neodymium iron boron substrate layer 10b, and a Zn layer 20b, a CuSnZn layer 30b, and a Cr layer 40b are sequentially disposed on an upper surface of the neodymium iron boron substrate layer 10b, where the Zn layer 20b is deposited on the upper surface of the neodymium iron boron substrate layer 10b by a water plating technique, the Cr layer 40b is obtained by a PVD vacuum plating technique, and the CuSnZn layer 30b is obtained by a water plating technique. The thickness of the Zn layer 20b was 8 μm, the thickness of the CuSnZn layer 30b was 5 μm, and the thickness of the Cr layer 40b was 0.4. mu.m.
Example 3
Referring to fig. 3, the neodymium iron boron composite plating layer of the present application includes a neodymium iron boron substrate layer 10c, and a Cu layer 20c, a CuSnZn layer 30c, an Au layer 40c, and a Cr layer 50c are sequentially disposed on an upper surface of the neodymium iron boron substrate layer 10c, where the Cu layer 20c and the CuSnZn layer 30c are deposited on the upper surface of the neodymium iron boron substrate layer by a water plating technique, and the Cr layer 40c is obtained by a PVD vacuum plating technique. The thickness of the Cu layer 20c was 12 μm, the thickness of the CuSnZn layer 30c was 6 μm, the thickness of the Au layer 40c was 1 μm, and the thickness of the Cr layer 50c was 0.4. mu.m.
Example 4
Referring to fig. 4, the neodymium iron boron composite plating layer of the present application includes a neodymium iron boron base material layer 10d, and a Ni layer 20d, a Cu layer 30d, a Ni layer 40d, a NiP layer 50d, an Au layer 60d, a Pt layer 70d, and a Cr layer 80d are sequentially disposed on the upper surface of the neodymium iron boron base material layer 10 d. The lowermost Ni layer 20d is deposited on the upper surface of the NdFeB base material layer 10d through a water plating technology, the Cr layer 80d is obtained through a PVD vacuum plating technology, and the middle Cu layer 30d, the Ni layer 40d, the NiP layer 50d, the Au layer 60d and the Pt layer 70d are obtained through the water plating technology. The thickness of the Ni layer 20d was 3 μm, the thickness of the Cu layer 30d was 5 μm, the thickness of the Ni layer 40d was 3 μm, the thickness of the NiP layer 50d was 5 μm, the thickness of the Au layer 60d was 0.2 μm, the thickness of the Pt layer 70d was 0.2 μm, and the thickness of the Cr layer 80d was 0.3 μm.
Example 5
Referring to fig. 5, the neodymium iron boron composite plating layer of the present application includes a neodymium iron boron base material layer 10e, and a Ni layer 20e, a Cu layer 30e, a Ni layer 40e, a NiP layer 50e, an Au layer 60e, and a Cr layer 70e are sequentially disposed on the upper surface of the neodymium iron boron base material layer 10 e. The Ni layer 20e positioned at the bottommost is deposited on the upper surface of the NdFeB base material layer 10e through a water plating technology, the Cr layer 70e is obtained through a PVD vacuum plating technology, and the Cu layer 30e, the Ni layer 40e, the NiP layer 50e and the Au layer 60e in the middle are obtained through the water plating technology. The thickness of the Ni layer 20e was 3 μm, the thickness of the Cu layer 30e was 5 μm, the thickness of the Ni layer 40e was 3 μm, the thickness of the NiP layer 50e was 5 μm, the thickness of the Au layer 60e was 0.4 μm, and the thickness of the Cr layer 70e was 0.3 μm.
Example 6
Referring to fig. 6, the neodymium iron boron composite plating layer of the present application includes a neodymium iron boron substrate layer 10f, and a Zn layer 20f, a CuSnZn layer 30f, and a TiN layer 40f are sequentially disposed on an upper surface of the neodymium iron boron substrate layer 10f, where the Zn layer 20f is deposited on the upper surface of the neodymium iron boron substrate layer 10f by a water plating technique, the TiN layer 40f is obtained by a PVD vacuum plating technique, and the CuSnZn layer 30f is obtained by a water plating technique. The thickness of the Zn layer 20f was 8 μm, the thickness of the CuSnZn layer 30f was 5 μm, and the thickness of the Cr layer 40f was 0.4. mu.m.
Example 7
Referring to fig. 7, the neodymium iron boron composite plating layer of the present application includes a neodymium iron boron substrate layer 10g, and a Zn layer 20g, a CuSnZn layer 30g, and a TiCN layer 40g are sequentially disposed on an upper surface of the neodymium iron boron substrate layer 10g, where the Zn layer 20g is deposited on the upper surface of the neodymium iron boron substrate layer 10g through a water plating technique, the TiCN layer 40g is obtained through a PVD vacuum plating technique, and the CuSnZn layer 30g is obtained through a water plating technique. Wherein the thickness of the Zn layer 20g was 8 μm, the thickness of the CuSnZn layer 30g was 5 μm, and the thickness of the Cr layer 40g was 0.4. mu.m.
Comparative example 1
This comparative example is essentially the same as example 1, except that: the Cr layer in example 1 was PVD vacuum plated, while the Cr layer in comparative example 1 was water plated.
The nd-fe-b composite plating layers obtained in examples 1 to 7 and comparative example 1 were subjected to hardness test and salt spray test, and the test results are shown in table 1.
Conditions for hardness test: indentation (indent) is performed by a Nanoinder nano micro indenter, and the hardness of the material is obtained by the projected area of indentation and the applied force.
Conditions of salt spray test: in a specific salt spray test box, spraying saline water containing (5 st 0.5)% of sodium chloride and having a pH value of 6.5-7.2 by a spraying device, allowing the salt spray to settle on a test piece to be tested, and observing the surface corrosion state of the test piece after a certain period of time. The temperature of the test chamber is required to be (35 +/-2) DEG C, the humidity is higher than 95%, and the fog reduction amount is 1-2 mL/(h cm)2) The nozzle pressure is 78.5 to 137.3kPa (0.8 to 1.4 kgf/cm)2)。
TABLE 1 hardness test and salt spray test results
| Hardness of | Corrosion resistance | Appearance of the workpiece | |
| Example 1 | 3100HV | 96h | Black color |
| Example 2 | 3200HV | 96h | Black color |
| Example 3 | 3300HV | 96h | Black color |
| Example 4 | 3400HV | 126h | Black color |
| Example 5 | 3200HV | 96h | Black color |
| Example 6 | 3200HV | 96h | Golden color |
| Example 7 | 3600HV | 144h | Golden color |
| Comparative example 1 | 1200HV | 48h | Black color |
As can be seen from table 1, in the neodymium iron boron composite plating layer of the present invention, the water plating layer and the PVD vacuum plating layer are sequentially disposed on the neodymium iron boron substrate layer, and the synergistic effect of the water plating layer and the PVD vacuum plating layer is utilized to stagger the pores in two different plating species, reduce the porosity, improve the density of the neodymium iron boron composite plating layer, provide higher hardness, and improve the wear resistance and corrosion resistance of the neodymium iron boron composite plating layer. Among them, in example 4, since Au layer and Pt layer are combined in the water plating layer, the corrosion resistance is higher than that in example 5. In example 6, the outermost layer is a TiN layer, so that more choices are provided for the color of the product. In example 7, the TiCN layer was used, and the hardness was further improved by containing carbon element.
The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.
Claims (10)
1. The utility model provides a neodymium iron boron composite coating, its characterized in that includes the neodymium iron boron substrate layer, is located at least one deck water coating of neodymium iron boron substrate layer upper surface and being located at least one deck PVD vacuum coating of water coating upper surface.
2. The neodymium-iron-boron composite plating layer as claimed in claim 1, wherein the water plating layer comprises a first water plating layer selected from one of a nickel layer, a zinc layer or a copper layer.
3. The neodymium-iron-boron composite plating layer as claimed in claim 2, wherein the upper surface of the first water plating layer is provided with at least one second water plating layer, and the second water plating layer is selected from a Cu layer, a Ni layer, a Cr layer, an Ag layer, a Pd layer, a Co layer, an Rh layer, a Ru layer, a Pt layer, an Au layer and a Cu, Ni, Cr, Ag, Pd, Rh, Ru, Au, Pt alloy layer.
4. The NdFeB composite coating of any one of claims 2 to 3, wherein the PVD vacuum coating is selected from Cr, W, Al2O3Layer, Ti layer, Zr layer, TiN layer, TiCN layer, SiO2Layer, Au layer.
5. The neodymium-iron-boron composite plating layer as claimed in claim 1, wherein the water plating layer is a composite layer and comprises a Zn layer, a copper-tin-zinc alloy layer and a cobalt-tungsten alloy layer in sequence from bottom to top; the PVD vacuum coating is a composite layer and sequentially comprises a Cr layer, a W layer and a TiN layer from bottom to top.
6. The neodymium-iron-boron composite plating layer as claimed in claim 1, wherein the water plating layer is a composite layer and sequentially comprises a Ni layer, a Cu layer, a Ni layer and a RhRu alloy layer from bottom to top; the PVD vacuum plating layer is a composite layer and sequentially comprises a Cr layer, a W layer and an Au layer from bottom to top.
7. The neodymium-iron-boron composite plating layer as claimed in claim 1, wherein the upper surface of the neodymium-iron-boron substrate layer is sequentially provided with a Ni layer, a Cu layer, a Ni layer, a NiP layer, an Au layer, a Pt layer and a Cr layer; the Cr layer is the PVD vacuum plating layer, and the Ni layer, the Cu layer, the Ni layer, the NiP layer, the Au layer and the Pt layer are the water plating layer.
8. The neodymium-iron-boron composite plating layer as claimed in claim 1, wherein the thickness of the water plating layer is 20 to 150 um; the thickness of the PVD vacuum plating layer is 0.2 um-150 um.
9. A method for preparing a neodymium iron boron composite plating layer according to any one of claims 1 to 8, characterized by comprising the steps of:
(1) providing a neodymium iron boron base material, and performing water plating treatment on the surface of the neodymium iron boron base material;
(2) and performing PVD vacuum plating treatment on the neodymium iron boron base material subjected to the water plating treatment.
10. Use of a neodymium iron boron composite coating according to any one of claims 1 to 8 in wearable products.
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