CN111041438A - Preparation method of anti-corrosion conductive layer of copper-aluminum transition head and copper bar of electrolytic zinc cathode plate - Google Patents
Preparation method of anti-corrosion conductive layer of copper-aluminum transition head and copper bar of electrolytic zinc cathode plate Download PDFInfo
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- CN111041438A CN111041438A CN201911258913.2A CN201911258913A CN111041438A CN 111041438 A CN111041438 A CN 111041438A CN 201911258913 A CN201911258913 A CN 201911258913A CN 111041438 A CN111041438 A CN 111041438A
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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
- 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
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
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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
- 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
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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
- 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
- C23C14/325—Electric arc evaporation
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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
- 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
- C23C14/50—Substrate holders
- C23C14/505—Substrate holders for rotation of the substrates
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/02—Electrodes; Connections thereof
Abstract
The invention relates to the technical field of electrolytic zinc cathode plates, in particular to a preparation method of an anticorrosive conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate, which aims to increase the binding force between the conducting layer and a substrate.
Description
Technical Field
The invention relates to the technical field of electrolytic zinc cathode plates, in particular to a preparation method of an anticorrosive conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate.
Background
Electrolytic zinc provides electric power through the contact of copper part and copper bar in the copper aluminium ferry, comes out zinc electrolysis from zinc sulfate, and copper aluminium ferry and copper bar are in acid environment, and sulphuric acid liquid is direct to drip on copper aluminium ferry and copper bar when even the negative plate goes out the groove, leads to copper aluminium ferry and copper bar to corrode very seriously, and the surface is born and is had the verdigris, and this will lead to resistance increase power consumption to increase, and the copper ion gets into and influences product purity in the electrolyte simultaneously. The treatment method of the prior zinc electroplating factory is to polish and rub the corroded copper surface to generate verdigris and wash the verdigris with water to ensure the purity of zinc products. The treatment process not only increases the labor capacity, but also corrodes the verdigris and falls into the electrolytic cell to influence the purity grade of the zinc.
Disclosure of Invention
The invention aims to provide a preparation method of an anti-corrosion conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate, which has the characteristics of simple process, high production efficiency, no corrosion to the copper-aluminum transition head and the copper bar and no influence on the original conductivity.
In order to solve the technical problem, the invention discloses a preparation method of an anticorrosive conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate, which comprises the following steps:
step 1, cleaning the surfaces of a copper-aluminum transition head and a copper bar;
step 2, carrying out multi-arc ion plating priming on the copper-aluminum transition head and the copper bar, wherein the thickness of a priming film layer is 2-3 mu m
Step 3, fixing the bracket and the tray in a coating chamber;
step 4, the aluminum transition head and the copper bar plated with the priming coat are arranged in a bracket and a tray, and the copper aluminum transition head and the copper bar are drilled with threaded holes and fixedly connected with the bracket through small screws;
step 5, mounting the copper-aluminum transition head and the copper bar coating rake, wherein the coating rake is naturally placed above the tray and is made of corrosion-resistant alloy;
and 6, adjusting coating parameters, wherein the coating thickness is 3-7 mu m, coating the copper-aluminum transition head and the copper bar by adopting a magnetron sputtering method, preventing the copper-aluminum transition head and the support and the tray of the copper bar from reciprocating or rotating back and forth during coating, and taking out the product from a coating chamber after coating.
Preferably, the coating rake material is a nickel-based alloy, the length of the nickel-based alloy is 800-850mm, the width of the nickel-based alloy is 80-120mm, and the thickness of the nickel-based alloy is 8-15 mm.
Preferably, the thickness of the coating film is 5-10 um.
Preferably, the length of the copper-aluminum transition head is 5-35mm, the width is 20-50mm, the height is 40-160mm, the length of the copper bar is 150-250mm, the width is 40-60mm, and the thickness is 5-10 mm.
The invention has the beneficial effects that: the corrosion-resistant alloy with good conductivity is sprayed on the surfaces of the copper-aluminum transition head and the copper bar, so that the process is simple, the production efficiency is high, the copper-aluminum transition head and the copper bar can not be corroded, the power consumption in the production of zinc by electricity is reduced, and the product quality is improved.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1: a preparation method of an anticorrosive conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate comprises the following steps:
step 1, cleaning 100 surfaces of copper bars with the size of 30 multiplied by 50 copper-aluminum transition heads and the size of 200 multiplied by 50 multiplied by 8;
step 2, carrying out multi-arc ion plating priming on the copper-aluminum transition head and the copper bar, wherein the thickness of a priming film layer is 2-3 mu m
Step 3, fixing the bracket and the tray in the film coating chamber, wherein the bracket is in a cage-shaped cylindrical structure and is fixed on the rotating shaft, and the tray is in a rectangular structure and is naturally placed in the film coating chamber;
step 4, arranging the aluminum transition head and the copper bar plated with the priming layer into a bracket and a tray, wherein a plurality of small screws are fixed on the bracket during installation, and the copper aluminum transition head and the copper bar are drilled with threaded holes and fixedly connected with the bracket through the small screws;
step 5, mounting the copper-aluminum transition head and the coating rake material of 810 multiplied by 100 multiplied by 10, wherein the rake material is naturally placed above the tray, the coating rake material adopts nickel-copper alloy with expansion coefficient similar to that of copper, the coating bonding force is good, and the coating is not only anticorrosive, but also does not influence the conductivity;
and 6, adjusting coating parameters (the specific parameters include the coating thickness of 3-10 mu m), and adopting a magnetron sputtering method, wherein the magnetron sputtering method mainly comprises the following procedures of 1, turning on a cooling water power supply 2, deflating and installing a sample and a rake material 4, vacuumizing 5, inflating 6, sputtering 7, finishing sputtering 8, cleaning, and coating the copper-aluminum transition head and the copper bar with the coating thickness of 10 mu m. When coating, the bracket and the tray of the copper-aluminum transition head and the copper bar are prevented from reciprocating or rotating, the product is taken out from the coating chamber after coating, the copper-aluminum transition head and the copper bar conductive coating are prepared by adopting a magnetron sputtering method, the coating thickness is controllable with high efficiency, and the problems of corrosion resistance and electric conduction are well solved.
The copper-aluminum transition head of the 2.6 flat cathode plate and the copper bar matched with the copper-aluminum transition head produced by the process have smooth surfaces and good uniformity.
Example 2: a preparation method of an anticorrosive conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate comprises the following steps:
step 1, cleaning 100 copper-aluminum transition heads with the size of 25 multiplied by 80 and 100 surfaces of 200 multiplied by 50 multiplied by 8 copper bars;
step 2, carrying out multi-arc ion plating priming on the copper-aluminum transition head and the copper bar, wherein the thickness of a priming film layer is 2-3 mu m
Step 3, fixing the bracket and the tray in the film coating chamber, wherein the bracket is in a cage-shaped cylindrical structure and is fixed on the rotating shaft, and the tray is in a rectangular structure and is naturally placed in the film coating chamber;
step 4, arranging the aluminum transition head and the copper bar plated with the priming layer into a bracket and a tray, wherein a plurality of small screws are fixed on the bracket during installation, and the copper aluminum transition head and the copper bar are drilled with threaded holes and fixedly connected with the bracket through the small screws;
step 5, mounting the copper-aluminum transition head and the coating rake material of 810 multiplied by 100 multiplied by 10, wherein the rake material is naturally placed above the tray, the coating rake material adopts nickel-copper alloy with expansion coefficient similar to that of copper, the coating bonding force is good, and the coating is not only anticorrosive, but also does not influence the conductivity;
and 6, adjusting coating parameters (the specific parameters include the coating thickness of 3-10 mu m), and adopting a magnetron sputtering method, wherein the magnetron sputtering method mainly comprises the following procedures of 1, turning on a cooling water power supply 2, deflating and installing a sample and a rake material 4, vacuumizing 5, inflating 6, sputtering 7, finishing sputtering 8, cleaning, and coating the copper-aluminum transition head and the copper bar with the coating thickness of 12 mu m. When coating, the bracket and the tray of the copper-aluminum transition head and the copper bar are prevented from reciprocating or rotating, the product is taken out from the coating chamber after coating, the copper-aluminum transition head and the copper bar conductive coating are prepared by adopting a magnetron sputtering method, the coating thickness is controllable with high efficiency, and the problems of corrosion resistance and electric conduction are well solved.
The copper-aluminum transition head of the 3.2-plane cathode plate and the copper bar matched with the copper-aluminum transition head produced by the process have smooth surfaces and good uniformity.
Example 3: a preparation method of an anticorrosive conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate comprises the following steps:
step 1, 100 copper-aluminum transition heads with the size of 5 multiplied by 40 multiplied by 150 are cleaned, and 100 surfaces of 200 multiplied by 50 multiplied by 8 copper bars are cleaned;
step 2, carrying out multi-arc ion plating priming on the copper-aluminum transition head and the copper bar, wherein the thickness of a priming film layer is 2-3 mu m
Step 3, fixing the bracket and the tray in the film coating chamber, wherein the bracket is in a cage-shaped cylindrical structure and is fixed on the rotating shaft, and the tray is in a rectangular structure and is naturally placed in the film coating chamber;
step 4, arranging the aluminum transition head and the copper bar plated with the priming layer into a bracket and a tray, wherein a plurality of small screws are fixed on the bracket during installation, and the copper aluminum transition head and the copper bar are drilled with threaded holes and fixedly connected with the bracket through the small screws;
step 5, mounting the copper-aluminum transition head and the coating rake material of 810 multiplied by 100 multiplied by 10, wherein the rake material is naturally placed above the tray, the coating rake material adopts nickel-copper alloy with expansion coefficient similar to that of copper, the coating bonding force is good, and the coating is not only anticorrosive, but also does not influence the conductivity;
and 6, adjusting coating parameters (the specific parameters include the coating thickness of 3-10 mu m), and adopting a magnetron sputtering method, wherein the magnetron sputtering method mainly comprises the following procedures of 1, turning on a cooling water power supply 2, deflating and installing a sample and a rake material 4, vacuumizing 5, inflating 6, sputtering 7, finishing sputtering 8, cleaning, and coating the copper-aluminum transition head and the copper bar with the coating thickness of 8 mu m. When coating, the bracket and the tray of the copper-aluminum transition head and the copper bar are prevented from reciprocating or rotating, the product is taken out from the coating chamber after coating, the copper-aluminum transition head and the copper bar conductive coating are prepared by adopting a magnetron sputtering method, the coating thickness is controllable with high efficiency, and the problems of corrosion resistance and electric conduction are well solved.
The copper-aluminum transition head of the 1.32-plane cathode plate and the copper bar matched with the copper-aluminum transition head produced by the process have smooth surfaces and good uniformity.
Example 4: a preparation method of an anticorrosive conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate comprises the following steps:
step 1, cleaning 100 surfaces of copper bar with the size of 25 multiplied by 60 copper-aluminum transition heads and the size of 200 multiplied by 50 multiplied by 8
Step 2, carrying out multi-arc ion plating priming on the copper-aluminum transition head and the copper bar, wherein the thickness of a priming film layer is 2-3 mu m
Step 3, fixing the bracket and the tray in the film coating chamber, wherein the bracket is in a cage-shaped cylindrical structure and is fixed on the rotating shaft, and the tray is in a rectangular structure and is naturally placed in the film coating chamber;
step 4, arranging the aluminum transition head and the copper bar plated with the priming layer into a bracket and a tray, wherein a plurality of small screws are fixed on the bracket during installation, and the copper aluminum transition head and the copper bar are drilled with threaded holes and fixedly connected with the bracket through the small screws;
step 5, mounting the copper-aluminum transition head and the coating rake material of 810 multiplied by 100 multiplied by 10, wherein the rake material is naturally placed above the tray, the coating rake material adopts nickel-copper alloy with expansion coefficient similar to that of copper, the coating bonding force is good, and the coating is not only anticorrosive, but also does not influence the conductivity;
and 6, adjusting coating parameters (the specific parameters include the coating thickness of 3-10 mu m), and adopting a magnetron sputtering method, wherein the magnetron sputtering method mainly comprises the following procedures of 1, turning on a cooling water power supply 2, deflating and installing a sample and a rake material 4, vacuumizing 5, inflating 6, sputtering 7, finishing sputtering 8, cleaning, and coating the copper-aluminum transition head and the copper bar with the coating thickness of 10 mu m. When coating, the bracket and the tray of the copper-aluminum transition head and the copper bar are prevented from reciprocating or rotating, the product is taken out from the coating chamber after coating, the copper-aluminum transition head and the copper bar conductive coating are prepared by adopting a magnetron sputtering method, the coating thickness is controllable with high efficiency, and the problems of corrosion resistance and electric conduction are well solved.
The copper-aluminum transition head of the 1.6 flat cathode plate and the copper bar matched with the copper-aluminum transition head produced by the process have smooth surfaces and good uniformity.
The invention can prevent the copper-aluminum transition head and the copper bar from being corroded, simultaneously does not influence the original electric conductivity, does not need to wash and rub the copper-aluminum transition head and the copper bar by workers, reduces the labor intensity of the workers, prolongs the service life of the cathode plate and the copper bar, improves the quality of zinc products and reduces the power consumption. For example, in 2019, the corrosion of the copper-aluminum transition head in the trial production period of a certain electric zinc plant is to ensure that the power consumption is more than 3100 ℃ per ton of zinc, and the enterprise is only 2950 ℃ and 3000 ℃ in normal conditions.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (3)
1. A preparation method of an anticorrosive conducting layer of a copper-aluminum transition head and a copper bar of an electrolytic zinc cathode plate is characterized by comprising the following steps: the method comprises the following steps:
step 1, cleaning the surfaces of a copper-aluminum transition head and a copper bar;
step 2, conducting multi-arc ion plating priming on the copper-aluminum transition head and the copper bar, wherein the thickness of a priming film layer is 2-3 mu m
Step 3, fixing the bracket and the tray in a coating chamber;
step 4, the aluminum transition head and the copper bar plated with the priming coat are arranged in a bracket and a tray, and the copper aluminum transition head and the copper bar are drilled with threaded holes and fixedly connected with the bracket through small screws;
step 5, mounting the copper-aluminum transition head and the copper bar coating rake, wherein the coating rake is naturally placed above the tray and is made of corrosion-resistant alloy;
and 6, adjusting coating parameters, wherein the coating thickness is 3-7 mu m, coating the copper-aluminum transition head and the copper bar by adopting a magnetron sputtering method, preventing the copper-aluminum transition head and the support and the tray of the copper bar from reciprocating or rotating back and forth during coating, and taking out the product from a coating chamber after coating.
2. The method for preparing the anticorrosive conducting layer of the copper-aluminum transition head and the copper bar of the electrolytic zinc cathode plate as claimed in claim 1, wherein the method comprises the following steps: the coating rake material is nickel-based alloy, the length of the nickel-based alloy is 800-850mm, the width of the nickel-based alloy is 80-120mm, and the thickness of the nickel-based alloy is 8-15 mm.
3. The method for preparing the anticorrosive conducting layer of the copper-aluminum transition head and the copper bar of the electrolytic zinc cathode plate as claimed in claim 1, wherein the method comprises the following steps: the thickness of the coating film is 5-10 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258913.2A CN111041438A (en) | 2019-12-10 | 2019-12-10 | Preparation method of anti-corrosion conductive layer of copper-aluminum transition head and copper bar of electrolytic zinc cathode plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911258913.2A CN111041438A (en) | 2019-12-10 | 2019-12-10 | Preparation method of anti-corrosion conductive layer of copper-aluminum transition head and copper bar of electrolytic zinc cathode plate |
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| CN111041438A true CN111041438A (en) | 2020-04-21 |
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| CN201911258913.2A Pending CN111041438A (en) | 2019-12-10 | 2019-12-10 | Preparation method of anti-corrosion conductive layer of copper-aluminum transition head and copper bar of electrolytic zinc cathode plate |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828206A (en) * | 2012-08-29 | 2012-12-19 | 广西南宁市蓝天电极材料有限公司 | Energy-saving anode plate or cathode plate for electrolysis |
| CN102851691A (en) * | 2011-07-01 | 2013-01-02 | 苏州天华有色金属制品有限公司 | Novel cathode plate of energy generator |
| CN108754396A (en) * | 2018-06-07 | 2018-11-06 | 福州大学 | The preparation method of cathode plate for electrolyzing zinc surface anticorrosion erosion resisting coating |
-
2019
- 2019-12-10 CN CN201911258913.2A patent/CN111041438A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851691A (en) * | 2011-07-01 | 2013-01-02 | 苏州天华有色金属制品有限公司 | Novel cathode plate of energy generator |
| CN102828206A (en) * | 2012-08-29 | 2012-12-19 | 广西南宁市蓝天电极材料有限公司 | Energy-saving anode plate or cathode plate for electrolysis |
| CN108754396A (en) * | 2018-06-07 | 2018-11-06 | 福州大学 | The preparation method of cathode plate for electrolyzing zinc surface anticorrosion erosion resisting coating |
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