CN219861576U - Corrosion-resistant structure - Google Patents
Corrosion-resistant structure Download PDFInfo
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- CN219861576U CN219861576U CN202320177833.XU CN202320177833U CN219861576U CN 219861576 U CN219861576 U CN 219861576U CN 202320177833 U CN202320177833 U CN 202320177833U CN 219861576 U CN219861576 U CN 219861576U
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- nickel
- phosphorus alloy
- corrosion
- resistant structure
- substrate
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- 238000005260 corrosion Methods 0.000 title claims abstract description 58
- 230000007797 corrosion Effects 0.000 title claims abstract description 57
- 229910001096 P alloy Inorganic materials 0.000 claims abstract description 57
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- 230000003746 surface roughness Effects 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims 2
- 238000004378 air conditioning Methods 0.000 claims 1
- 239000011247 coating layer Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 19
- 239000010959 steel Substances 0.000 abstract description 19
- 238000007747 plating Methods 0.000 description 23
- 238000004519 manufacturing process Methods 0.000 description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical group [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 9
- 238000007772 electroless plating Methods 0.000 description 8
- 239000010408 film Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000010409 thin film 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/48—Coating with alloys
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1675—Process conditions
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1675—Process conditions
- C23C18/168—Control of temperature, e.g. temperature of bath, substrate
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1689—After-treatment
- C23C18/1692—Heat-treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemically Coating (AREA)
Abstract
The corrosion-resistant structure of the utility model comprises a substrate and a nickel-phosphorus alloy coating, wherein the nickel-phosphorus alloy coating is arranged on the substrate. Wherein, the surface roughness of the nickel-phosphorus alloy coating is less than 2 mu m. The corrosion-resistant structure can reduce the roughness of the steel cylinder inner wall structure, and the corrosion resistance of the steel cylinder inner wall structure is improved for a long time.
Description
Technical Field
The utility model relates to a corrosion-resistant structure, in particular to a corrosion-resistant structure with a nickel-phosphorus alloy coating.
Background
The steel cylinder is usually used for storing special gas or liquid, so that the corrosion resistance requirement of the inner wall structure of the steel cylinder is high, and if the inner wall structure of the steel cylinder is uneven, corrosive gas or liquid is easy to infiltrate into the inner metal layer through microscopic valleys on the surface, so that the surface is corroded. Therefore, the inner wall of the steel cylinder is usually subjected to corrosion prevention treatment to reduce the roughness of the inner wall structure of the steel cylinder. Among them, the present anti-corrosion treatment mainly comprises the following two methods:
1. the method of coating the inner wall surface with the antirust primer can increase the corrosion resistance of the inner wall in a short time. However, in long-term use, the corrosion resistance of the inner wall structure will be greatly compromised because the continuous inflation and deflation will cause the paint layer to fall off. In addition, the detached paint layer may also clog the piping and the valve member.
2. Phosphating treatment, namely immersing the steel cylinder into an acidic solution mainly containing phosphoric acid and phosphate to generate a layer of indissolvable phosphate film, namely a phosphating film, on the surface of the inner wall structure of the steel cylinder. Although the corrosion resistance of the inner wall structure after the phosphating treatment is improved, white phosphating powder can be generated by the inner wall structure along with the increase of time, and the phosphating powder enters the pipeline along with gas to damage the control valve member. Further, if the phosphating is repeated, the inner wall structure is liable to generate hydrogen embrittlement, which affects the safety of use.
Therefore, it is worth thinking of those skilled in the art how to reduce the roughness of the inner wall structure of the steel cylinder and to improve the corrosion resistance of the inner wall structure of the steel cylinder for a long time.
Disclosure of Invention
The utility model aims to provide a corrosion-resistant structure which can reduce the roughness of the inner wall structure of a steel cylinder and improve the corrosion resistance of the inner wall structure of the steel cylinder for a long time.
The corrosion-resistant structure of the utility model comprises a substrate and a nickel-phosphorus alloy coating, wherein the nickel-phosphorus alloy coating is arranged on the substrate. Wherein, the surface roughness of the nickel-phosphorus alloy coating is less than 2 mu m, and the thickness is not less than 20 mu m.
In the above corrosion-resistant structure, an intermediate layer is disposed between the substrate and the nickel-phosphorus alloy coating.
In the above-described corrosion-resistant structure, the thickness of the intermediate layer is less than 1 μm.
In the corrosion resistant structure, the knoop hardness (knoop hardness) of the nickel-phosphorus alloy coating is HK 350-550.
In the corrosion resistant structure, the nickel-phosphorus alloy coating comprises 88-90 wt% of nickel metal.
The utility model aims to provide a manufacturing method of a corrosion-resistant structure, and the surface of the corrosion-resistant structure manufactured by the manufacturing method of the corrosion-resistant structure has lower roughness.
The manufacturing method of the corrosion-resistant structure of the present utility model comprises the following steps:
first, a substrate is provided. And depositing a nickel-phosphorus alloy on the substrate to form a nickel-phosphorus alloy coating with a surface roughness less than 2 mu m.
In the above method for manufacturing a corrosion-resistant structure, the thickness of the nickel-phosphorus alloy plating layer is not less than 20 μm.
In the above method for manufacturing a corrosion-resistant structure, an intermediate layer is formed between the substrate and the nickel-phosphorus alloy coating.
In the above method for fabricating a corrosion resistant structure, the nickel-phosphorus alloy is deposited on the substrate by electroless plating.
In the above method for manufacturing the corrosion resistant structure, the deposition rate of the nickel-phosphorus alloy is 0.08 μm/min to 0.28 μm/min.
In the above method for manufacturing a corrosion resistant structure, after the nickel-phosphorus alloy plating layer is formed, the nickel-phosphorus alloy plating layer is subjected to a heat treatment at a temperature of 100 ℃ to 200 ℃.
In the above method for producing a corrosion-resistant structure, the pH of the electroless plating solution used in the electroless plating method is 3 to 5.
In the above method for producing a corrosion-resistant structure, the temperature of the electroless plating solution is 80 to 95 ℃.
The utility model has the following advantages: can reduce the roughness of the inner wall of the steel cylinder and increase the corrosion resistance of the inner wall of the steel cylinder.
To achieve the foregoing and other objects, and in accordance with the purpose of the utility model, as embodied and broadly described, a preferred embodiment of the present utility model is illustrated and described below.
Drawings
Fig. 1 is a cross-sectional view of a corrosion resistant structure 10 of the present embodiment and an enlarged view of a part of the structure thereof.
Fig. 2 is a graph showing the nickel-phosphorus alloy plating 13 of different thicknesses compared with the roughness of the surface thereof.
Fig. 3 is a cross-sectional view of another embodiment of a corrosion resistant structure 20 and an enlarged view of a portion of the structure.
Fig. 4 illustrates a method of fabricating the corrosion-resistant structure 10 according to the present embodiment.
FIG. 5 illustrates another embodiment of a method of fabricating a corrosion resistant structure 20.
Detailed Description
Referring to fig. 1, fig. 1 is a cross-sectional view of a corrosion-resistant structure 10 and an enlarged view of a part of the structure thereof according to the present embodiment. The corrosion-resistant structure 10 of the present utility model corresponds to an inner wall structure of a steel cylinder, the corrosion-resistant structure 10 comprises a substrate 12 and a nickel-phosphorus alloy coating 13, the substrate 12 is made of stainless steel or aluminum, and the nickel-phosphorus alloy coating 13 is disposed on the substrate 12. Wherein the knoop hardness (knoop hardness) of the nickel-phosphorous alloy coating 13 is HK 350-550, and the nickel-phosphorous alloy coating 13 is nickel metal comprising 88wt% to 90 wt%. Therefore, the nickel metal with higher material hardness and extremely high purity can improve the corrosion resistance of the inner wall structure of the steel cylinder for a long time.
In the above description, the nickel-phosphorus alloy plating layer 13 is provided on the substrate 12, and the nickel-phosphorus alloy plating layer 13 is not limited to being directly deposited on the substrate 12, and other thin films may be deposited between the nickel-phosphorus alloy plating layer 13 and the substrate 12.
In addition, in the present embodiment, the thickness of the nickel-phosphorus alloy plating layer 13 is required to be not less than 20 μm, that is, greater than or at least equal to 20 μm, for the following reasons:
first, referring to fig. 2, fig. 2 is a graph showing the roughness of the nickel-phosphorus alloy plating layer 13 and the nickel-phosphorus alloy plating layer 13 with different thicknesses. Applicants used a plurality of nickel-phosphorus alloy coatings 13 of different thicknesses and measured the roughness of the surface of each nickel-phosphorus alloy coating 13 for comparison, with the end result shown in the control chart of fig. 2.
As is clear from the comparison chart of fig. 2, when the thickness of the nickel-phosphorus alloy plating layer 13 is 15 μm, the roughness of the surface thereof is 2.3 μm, and when the thickness of the nickel-phosphorus alloy plating layer 13 is 20 μm, the roughness of the surface thereof is 1.9 μm. Also, as the thickness of the nickel-phosphorus alloy plating layer 13 is larger, the surface of the nickel-phosphorus alloy plating layer 13 may have smaller roughness, for example: the roughness of the surface of the nickel-phosphorus alloy plating layer 13 having a thickness of 50 μm was 1.48 μm. Therefore, when the thickness of the nickel-phosphorus alloy plating layer 13 is not less than 20 μm, the roughness of the surface of the nickel-phosphorus alloy plating layer 13 will be less than 2 μm, which is already very flat. Thus, the nickel-phosphorus alloy plating layer 13 is not easy to allow corrosive gas or liquid to permeate into the substrate 12 through microscopic valleys on the surface, so that the surface of the corrosion-resistant structure 10 is prevented from being corroded.
Referring to fig. 3, fig. 3 is a cross-sectional view of a corrosion-resistant structure 20 according to another embodiment and an enlarged view of a portion thereof. The difference between the corrosion resistant structure 20 and the corrosion resistant structure 10 is that: the corrosion-resistant structure 20 further includes an intermediate layer 24, wherein the intermediate layer 24 is disposed between the substrate 12 and the nickel-phosphorus alloy coating 13, and the thickness of the intermediate layer 24 is less than 1 μm. In this embodiment, the material of the intermediate layer is palladium (Pd), for example, and the intermediate layer helps the nickel-phosphorus alloy coating 13 to provide a good conductive layer and adhesion, so as to prevent the nickel-phosphorus alloy coating 13 from corrosion and falling off.
In addition, when the nickel-phosphorus alloy is deposited, the microstructure of the nickel-phosphorus alloy is different from that of the substrate 12, so that a compressive stress or tensile hard force is generated on the film formed by deposition, when the film is deposited thicker, the stress is larger, and the film and the substrate 12 are separated due to excessive hard force. Therefore, the thickness of the nickel-phosphorus alloy plating layer 13 is preferably not more than 50 μm.
The above description mainly discloses the structure of the corrosion-resistant structure 10 and the corrosion-resistant structure 20, and the following description will explain how to manufacture the corrosion-resistant structure 10 and the corrosion-resistant structure 20 with reference to fig. 4 and 5, respectively.
First, referring to step S1, a substrate 12 is provided, and the substrate 12 is made of stainless steel or aluminum, for example.
Then, referring to step S2, a nickel-phosphorus alloy is deposited on the substrate 12 to form a nickel-phosphorus alloy coating 13 with a surface roughness of less than 2 μm. Specifically, the nickel-phosphorus alloy is deposited on a substrate in an electroless manner 12, the pH value of an electroless plating solution used in the electroless nickel plating manner is 3-5, and the temperature of the electroless plating solution is 80-95 ℃, so that the deposition rate of the nickel-phosphorus alloy is 0.08-0.28 mu m/min. Thus, the nickel-phosphorus alloy plating layer 13 having a uniform thickness can be formed.
In the above, the electroless plating method involves processes such as: pretreatment, degreasing, washing, acid washing (sulfuric acid or sodium sulfate solution), washing, microetching, washing, pre-soaking (H2 SO 4), activating (Pd catalyst), washing, electroless nickel (Ni/P), washing, and drying are familiar to those having ordinary skill in the art, and will not be described in detail in the present specification.
In addition, after step S2, a heat treatment is typically performed on the nickel-phosphorus alloy plating layer 13, and the temperature of the heat treatment is 100 ℃ to 200 ℃. This is because the film deposited by electroless plating is less dense and tends to contain moisture in the micropores, and the heat treatment can disperse the moisture, which helps to increase the compactness and hardness of the nickel-phosphorus alloy plating layer 13.
The method of fabricating the corrosion resistant structure 20 according to another embodiment of the present utility model includes the steps of:
first, referring to step S21, a substrate 12 is provided. Then, referring to step S22, a palladium metal is deposited on the substrate 12 to form an intermediate layer 24 with a thickness of less than 1 μm, wherein the intermediate layer is made of palladium (Pd). Then, referring to step S23, a nickel-phosphorus alloy is deposited on the intermediate layer 24 to form a nickel-phosphorus alloy coating 13 with a surface roughness of less than 2 μm. Thus, the corrosion resistant structure 20 of the present embodiment is completed.
In summary, the corrosion-resistant structure of the utility model effectively reduces the roughness of the inner wall structure of the steel cylinder and improves the corrosion resistance of the inner wall structure of the steel cylinder for a long time.
The utility model is described above without limiting the scope of the claims. Modifications and variations which may be made by those skilled in the art without departing from the spirit or scope of the utility model are intended to be included within the scope of the following claims.
Claims (4)
1. A corrosion resistant structure comprising:
a substrate; a kind of electronic device with high-pressure air-conditioning system
A nickel-phosphorus alloy coating layer arranged on the substrate;
wherein the surface roughness of the nickel-phosphorus alloy coating is less than 2 mu m, and the thickness of the nickel-phosphorus alloy coating is not less than 20 mu m.
2. The corrosion resistant structure of claim 1, further comprising an intermediate layer disposed between the substrate and the nickel-phosphorus alloy coating.
3. The corrosion resistant structure of claim 2, wherein the thickness of the intermediate layer is less than 1 μm.
4. The corrosion resistant structure of claim 1 wherein the nickel phosphorus alloy coating has a Knoop hardness (Knoop hardss) of HK350 to 550.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW111147141A TW202424264A (en) | 2022-12-08 | Corrosion-resistant structure and manufacturing method thereof | |
| TW111147141 | 2022-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219861576U true CN219861576U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310095337.4A Pending CN116043201A (en) | 2022-12-08 | 2023-02-10 | Corrosion-resistant structure and manufacturing method thereof |
| CN202320177833.XU Active CN219861576U (en) | 2022-12-08 | 2023-02-10 | Corrosion-resistant structure |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310095337.4A Pending CN116043201A (en) | 2022-12-08 | 2023-02-10 | Corrosion-resistant structure and manufacturing method thereof |
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| Country | Link |
|---|---|
| CN (2) | CN116043201A (en) |
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2023
- 2023-02-10 CN CN202310095337.4A patent/CN116043201A/en active Pending
- 2023-02-10 CN CN202320177833.XU patent/CN219861576U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN116043201A (en) | 2023-05-02 |
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