CN109023212B - Amorphous protective corrosion-resistant reinforcing steel bar and preparation method thereof - Google Patents
Amorphous protective corrosion-resistant reinforcing steel bar and preparation method thereof Download PDFInfo
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major constituent
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
Abstract
An amorphous protective corrosion-resistant reinforcing steel bar and a preparation method thereof. The cored wire for the coating on the steel bar comprises the following components in percentage by weight: 25 to 28wt% of Cr, 11 to 13wt% of B, 0.2 to 0.7wt% of C, 0.5 to 2.5wt% of P, 3 to 4.5wt% of Cu, 1.5 to 3.5wt% of Ni, 5 to 10wt% of Mo, 2 to 4wt% of Mn, 0.35 to 0.57wt% of Ti, and the balance of Fe. Drying the components, uniformly mixing in a powder mixer, placing into a U-shaped 304 stainless steel belt groove, closing the U-shaped groove, and drawing into a wire through a wire drawing die. Pretreating the steel bar body, taking the powder core wire as a raw material, preparing a coating by adopting a supersonic speed electric arc spraying technology, and performing hole sealing treatment. The coating has the advantages of high amorphous content, high bonding strength, low porosity, strong corrosion resistance and low cost, and provides a new way for the corrosion prevention of the steel bar.
Description
Technical Field
The invention belongs to the field of constructional engineering materials for material processing engineering, and particularly relates to an amorphous protective corrosion-resistant reinforcing steel bar and a preparation method thereof.
Background
The corrosion of steel bars is the main cause of the damage of the reinforced concrete structure. At present, the durability of concrete is a more concern for large ports, sea-crossing bridges, dams and other infrastructures. However, many large infrastructures have shorter practical lives than designed, especially at sea and in coastal and saline-alkali areas, due to Cl-The corrosion speed of the steel bars is accelerated, the service life of the reinforced concrete structure is greatly reduced, and great damage is brought to national economy and life and property safety of people.
The amorphous alloy is an amorphous uniform single phase, does not have crystal defects such as crystal boundary, subcrystal boundary, dislocation and the like, and has extremely high strength, toughness, wear resistance and corrosion resistance. Compared with crystalline alloy and stainless steel with the same components, the corrosion-resistant alloy has no corrosion weak links such as crystal boundary and the like, thereby having excellent corrosion resistance.
At present, the measures for improving the corrosion resistance of the steel bar mainly comprise: the surface of the steel bar is coated with an organic corrosion-resistant layer, the steel bar corrosion inhibitor is added, the carbonization resistance of the foundation concrete is enhanced, and a negative (negative) electrode protection method and the like are adopted. The organic anticorrosive coating on the surface of the steel bar has low bonding strength and high construction difficulty, and a protective film is easy to damage in the processes of transportation and bar arrangement; the anode type reinforcing steel bar corrosion inhibitor in the reinforcing steel bar corrosion inhibitor can accelerate corrosion once the dosage is insufficient, and when the cathode type reinforcing steel bar corrosion inhibitor is used alone, the effect is not obvious, the dosage is generally large, and the cost is high; the anti-carbonization capability of the reinforced base concrete has better anti-penetration capability, but the protective agent is inflammable, toxic, unfavorable for breathing and can corrode the skin; the negative (cathode) protection anode needs to be replaced and is limited by the conditions of use. It can be seen that the existing steel bar protection measures play a certain protection effect, but the corrosion problem of the steel bar cannot be effectively solved, and the amorphous protective coating has excellent corrosion resistance, so that a new solution is provided for steel bar protection.
Thermal spray technology has matured over the years and is widely used in the field of coating preparation. The currently common thermal spraying techniques mainly include flame spraying, electric arc spraying, plasma spraying, explosion spraying, supersonic flame spraying and the like. Compared with flame spraying, the coating prepared by the supersonic electric arc spraying has higher bonding strength and lower porosity, and the cost of the supersonic electric arc spraying is far lower than that of plasma spraying, explosion spraying and supersonic flame spraying. Therefore, the supersonic electric arc spraying technology is used for preparing the amorphous protection corrosion-resistant reinforcing steel bar, the production cost can be reduced, and the optimal cost performance can be obtained.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the amorphous protective corrosion-resistant reinforcing steel bar and the preparation method thereof, the obtained reinforcing steel bar has excellent corrosion resistance, the durability of a reinforced concrete structure can be obviously improved, and a new way is provided for the corrosion resistance of the reinforcing steel bar.
The amorphous protection corrosion-resistant steel bar comprises a steel bar body and a coating, wherein the coating is sprayed on the surface of the steel bar body, the coating is formed by spraying a powder core wire, and the powder core wire comprises the following components in percentage by weight: 25-28 wt% of Cr, 11-13 wt% of B, 0.2-0.7 wt% of C, 0.5-2.5 wt% of P, 3-4.5 wt% of Cu, 1.5-3.5 wt% of Ni, 5-10 wt% of Mo, 2-4 wt% of Mn, 0.35-0.57 wt% of Ti and the balance of Fe; the diameter of the powder core wire is 2mm, and the filling rate is 35-40%.
Preferably, the powder core wire comprises the following components in percentage by weight: 26.5wt% of Cr, 12.5wt% of B12, 0.45wt% of C, 0.15wt% of P, 3.75wt% of Cu, 2.5wt% of Ni, 7.5wt% of Mo, 3.5wt% of Mn, 0.45wt% of Ti and the balance of Fe; the filling ratio of the cored wire was 37%.
The preparation method of the amorphous protective corrosion-resistant reinforcing steel bar comprises the following steps:
step 5, feeding the cored wire into supersonic electric arc spraying equipment, and spraying the cored wire on the surface of the pretreated steel bar body to form a coating, wherein the parameters of the spraying process are spraying voltage of 30-35V, spraying current of 120-140A, spraying distance of 150-200 mm, spraying air pressure of 0.7-0.9 MPa and moving speed of a spray gun of 10-20 mm/s;
and 6, sealing holes of the coating by using organic silicon resin or epoxy resin after spraying is finished, and obtaining the amorphous protective corrosion-resistant reinforcing steel bar.
The improvement is that the drying temperature in the step 1 is 90-100 ℃, and the drying time is 1-2 hours; the mixing time is 1-4 hours.
Further improved, the drying temperature in the step 1 is 95 ℃, and the drying time is 1.5 hours; the mixing time was 2 hours.
The improvement is that the weight ratio of the mixed powder A to the steel bar body in the step 2 is 0.45: 1.
As a modification, the drawing speed in step 3 was 170 mm/s.
As an improvement, the parameters of the spraying process in the step 5 are as follows: the spraying voltage is 32V, the spraying current is 130A, the spraying distance is 160mm, the spraying air pressure is 0.8MPa, and the moving speed of the spray gun is 15 mm/s.
Has the advantages that:
1. b, C, P is small atoms in the components of the powder core wire of the amorphous protective corrosion-resistant steel bar, so that the critical cooling speed of the amorphous alloy can be reduced, and the amorphous forming capability of the amorphous protective coating can be improved; cr, Cu, Ni, Mn and Ti belong to intermediate atoms, and Mo is a large atom; the reasonable matching of the large, medium and small atoms can increase the mismatching degree of the system, and is beneficial to improving the amorphous forming capability of the system; in addition, Cr can improve the electrode potential of the amorphous protective coating, thereby improving the corrosion resistance of the reinforcing steel bar, Cu can improve the antimicrobial corrosion resistance of the amorphous protective coating, and Mo can improve the resistance of the amorphous protective coating to ClˉThe corrosion capability is that Ti can form a compact oxide film layer, the corrosion resistance of the amorphous protective coating is improved, Ni can improve the toughness of the amorphous protective coating, and the addition of Mn can increase the mismatching degree of atoms and improve the amorphous forming capability of the protective coating;
2. the amorphous coating is prepared by adopting a supersonic electric arc spraying technology, the compact and continuous amorphous coating with low oxide content can be obtained, the coating almost does not contain a crystal phase, the porosity is less than 5%, and the bonding strength of the coating is 47-55 MPa;
3. the prepared amorphous protective corrosion-resistant reinforcing steel bar has excellent corrosion resistance. The corrosion potential in the concrete simulated pore liquid is about-460 mV higher than that of the chromium coating (-554 mV); the corrosion current density is about 6.800 muA cm-2Lower than that of chromium plating layer (14.12. mu.A. cm)-2) Therefore, the corrosion resistance of the alloy is better than that of a chromium coating;
4. the raw materials used by the invention have low cost, most of the raw materials are industrial alloys, and the raw materials are prepared by adopting a supersonic electric arc spraying technology, so the cost is lower.
Drawings
FIG. 1 is a schematic longitudinal cross-section of a steel bar, wherein (a) is the steel bar prepared in example 1 and (b) is the steel bar without sealing treatment, 1-the steel bar body, 2-the amorphous coating, 3-the pores after sealing, 4-the oxide, 5-the pores without sealing treatment;
FIG. 2 is a metallographic photograph of a coating on the amorphous protective corrosion resistant steel bar prepared in example 3;
FIG. 3 is an XRD pattern of a coating on the amorphous protective corrosion-resistant steel bar prepared in example 3;
FIG. 4 is a Tafel polarization curve of the coating on the amorphous protective corrosion-resistant steel bar prepared in examples 1-5.
Detailed Description
The specific material ratios, process conditions and results thereof in the examples are illustrative of the invention and should not, nor should they limit the invention as detailed in the claims. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
In this embodiment, DT2000 image analysis software is used to measure the porosity of the coating according to a grayscale method. The corrosion potential and corrosion current density of the steel reinforcement are measured in a concrete simulated pore fluid by using a PARSTAT 2273 electrochemical workstation.
Example 1
The amorphous protection corrosion-resistant steel bar comprises a steel bar body and a coating with the thickness of 300-: 27.7 wt% Cr, 13wt% B, 0.7wt% C, 2.5wt% P, 4.5wt% Cu, 3.5wt% Ni, 9.5 wt% Mo, 4wt% Mn, 0.45wt% Ti, and the balance Fe; the diameter of the cored wire is 2mm, and the filling rate of the cored wire is 37%.
The preparation method of the amorphous protective corrosion-resistant reinforcing steel bar comprises the following steps:
step 5, feeding the cored wires into supersonic electric arc spraying equipment, and spraying the cored wires on the surface of the pretreated steel bar body to form a coating, wherein the parameters of the spraying process are spraying voltage 32V, spraying current 130A, spraying distance 150mm, spraying air pressure 0.8MPa and moving speed of a spray gun 15 mm/s;
and 6, sealing holes of the coating by using organic silicon resin or epoxy resin after spraying is finished, and obtaining the amorphous protective corrosion-resistant reinforcing steel bar.
Example 2
The amorphous protection corrosion-resistant steel bar comprises a steel bar body and a coating, wherein the coating is sprayed on the surface of the steel bar body, the coating is formed by spraying a powder core wire, and the powder core wire comprises the following components in percentage by weight: 27.3 wt% Cr, 12.5wt% B, 0.57wt% C, 0.65 wt% P, 4.13 wt% Cu, 3.2 wt% Ni, 8.75 wt% Mo, 3.5wt% Mn, 0.45wt% Ti, and the balance Fe; the diameter of the cored wire is 2mm, and the filling rate of the cored wire is 37%.
The preparation method of the amorphous protective corrosion-resistant reinforcing steel bar comprises the following steps:
step 5, feeding the cored wires into supersonic electric arc spraying equipment, and spraying the cored wires on the surface of the pretreated steel bar body to form a coating, wherein the parameters of the spraying process are spraying voltage 32V, spraying current 130A, spraying distance 150mm, spraying air pressure 0.8MPa and moving speed of a spray gun 15 mm/s;
and 6, sealing holes of the coating by using organic silicon resin or epoxy resin after spraying is finished, and obtaining the amorphous protective corrosion-resistant reinforcing steel bar.
Example 3
The amorphous protection corrosion-resistant steel bar comprises a steel bar body and a coating, wherein the coating is sprayed on the surface of the steel bar body, the coating is formed by spraying a powder core wire, and the powder core wire comprises the following components in percentage by weight: 26.5wt% Cr, 12.5wt% B, 0.45wt% C, 0.15wt% P, 3.75wt% Cu, 2.5wt% Ni, 7.5wt% Mo, 3.5wt% Mn, 0.45wt% Ti, and the balance Fe; the diameter of the cored wire is 2mm, and the filling rate of the cored wire is 37%.
The preparation method of the amorphous protective corrosion-resistant reinforcing steel bar comprises the following steps:
step 5, feeding the cored wires into supersonic electric arc spraying equipment, and spraying the cored wires on the surface of the pretreated steel bar body to form a coating, wherein the parameters of the spraying process are spraying voltage 32V, spraying current 130A, spraying distance 160mm, spraying air pressure 0.8MPa and moving speed of a spray gun 15 mm/s;
and 6, sealing holes of the coating by using organic silicon resin or epoxy resin after spraying is finished, and obtaining the amorphous protective corrosion-resistant reinforcing steel bar.
As can be seen from FIG. 2, the coating on the amorphous corrosion-resistant steel bar has a typical layered structure, because most of the atomized particles impact on the substrate in a molten or partially molten state during the supersonic arc spraying process, and the particles rapidly spread and are deposited and solidified, thereby forming a layered tower structure. There is a small amount of black oxide in the lamellar gaps due to oxidation caused by small amounts of microfused, semi-molten and atomized particles coming into contact with air. Interlayer micropores also exist in the layered gaps, which are caused by that the atomized particles carry partial air and gas released by metallurgical reaction in the flying process and have no time to overflow.
As can be seen in fig. 3, there is a distinct amorphous diffuse scattering peak in the XRD pattern of the coating, indicating that the protective coating consists mainly of an amorphous phase.
Example 4
The amorphous protection corrosion-resistant steel bar comprises a steel bar body and a coating, wherein the coating is sprayed on the surface of the steel bar body, the coating is formed by spraying a powder core wire, and the powder core wire comprises the following components in percentage by weight: 25.7 wt% Cr, 11.5 wt% B, 0.32 wt% C, 1.2 wt% P, 3.37 wt% Cu, 2.1 wt% Ni, 6.25 wt% Mo, 2.5wt% Mn, 0.45wt% Ti, and the balance Fe; the diameter of the powder core wire is 2 mm; the filling ratio of the cored wire was 37%.
The preparation method of the amorphous protective corrosion-resistant reinforcing steel bar comprises the following steps:
step 5, feeding the cored wires into supersonic electric arc spraying equipment, and spraying the cored wires on the surface of the pretreated steel bar body to form a coating, wherein the parameters of the spraying process are spraying voltage of 30V, spraying current of 120A, spraying distance of 160mm, spraying air pressure of 0.8MPa and moving speed of a spray gun of 15 mm/s;
and 6, sealing holes of the coating by using organic silicon resin or epoxy resin after spraying is finished, and obtaining the amorphous protective corrosion-resistant reinforcing steel bar.
Example 5
The amorphous protection corrosion-resistant steel bar comprises a steel bar body and a coating, wherein the coating is sprayed on the surface of the steel bar body, the coating is formed by spraying a powder core wire, and the powder core wire comprises the following components in percentage by weight: 25.5 wt% Cr, 11.2 wt% B, 0.25 wt% C, 0.52 wt% P, 3.2 wt% Cu, 1.5 wt% Ni, 5.2 wt% Mo, 2.1 wt% Mn, 0.45wt% Ti, and the balance Fe; the diameter of the powder core wire is 2 mm; the filling rate of the powder core wire is 37 percent; .
The preparation method of the amorphous protective corrosion-resistant reinforcing steel bar comprises the following steps:
step 5, feeding the cored wires into supersonic electric arc spraying equipment, and spraying the cored wires on the surface of the pretreated steel bar body to form a coating, wherein the parameters of the spraying process are spraying voltage 35V, spraying current 140A, spraying distance 170mm, spraying air pressure 0.8MPa and moving speed of a spray gun 15 mm/s;
and 6, sealing holes of the coating by using organic silicon resin or epoxy resin after spraying is finished, and obtaining the amorphous protective corrosion-resistant reinforcing steel bar.
The amorphous protective corrosion resistant steel bars prepared in the above examples 1 to 5 were placed in a concrete simulated pore liquid (concrete simulated pore liquid configuration: three-component solution composition is 0.6mol/L KOH +0.2mol/L NaOH +0.001mol/L Ca (OH)2) The corrosion potential and the corrosion current density in (1) were measured, and the results are shown in Table 1.
TABLE 1 Property parameters of amorphous protective corrosion-resistant reinforcing steel bars prepared under different formulations
| Examples | Corrosion potential/mV | Corrosion current density/. mu.A.cm-2 |
| 1 | -523 | 9.458 |
| 2 | -471 | 7.427 |
| 3 | -459 | 6.782 |
| 4 | -551 | 10.340 |
| 5 | -595 | 12.540 |
As can be seen from FIG. 4 and Table 1, the corrosion potential of the amorphous protective corrosion-resistant steel bar prepared in example 3 is the highest, about-459 mV higher than that of the chromium plating layer (-554 mV); the corrosion current is minimum, about 6.782 mu A/cm2Lower than that of chromium plating layer (14.12. mu.A. cm)-2) Therefore, the corrosion resistance is higher than that of the chromium coating, and the corrosion resistance is optimal.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any simple modifications or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention are within the scope of the present invention.
Claims (7)
1. The amorphous protection corrosion-resistant steel bar comprises a steel bar body and a coating, wherein the coating is sprayed on the surface of the steel bar body, and the coating is characterized in that the coating is formed by spraying a powder core wire, and the powder core wire comprises the following components in percentage by weight: cr 25-28 wt%, B11-13 wt%, C0.2-0.7 wt%, P0.5-2.5 wt%, Cu 3-4.5 wt%, Ni 1.5-3.5 wt%, Mo 5-10 wt%, Mn 2-4 wt%, Ti 0.35-0.57 wt%, and the balance of Fe; the diameter of the powder core wire is 2mm, and the filling rate is 35-40%; the preparation method of the amorphous protective corrosion-resistant reinforcing steel bar comprises the following steps: step 1, weighing powder containing 10 elements required by a powder core wire, drying, and then putting into a powder mixer to mix at normal temperature to obtain mixed powder A; step 2, a 304 stainless steel strip is selected and rolled into a U shape to serve as a coating layer, mixed powder A is added into the U-shaped groove of the stainless steel strip, and the weight ratio of the mixed powder A to the steel bar body is (0.35-0.57): 1; step 3, closing the U-shaped groove to coat the mixed powder A in the U-shaped groove, and drawing and reducing the mixed powder A at the speed of 150-200 mm/s through a wire drawing die to obtain a powder core wire with the diameter of 2 mm; step 4, after removing rust and oil on the surface of the steel bar body, under the pressure of 0.7-0.9 MPa, adopting brown corundum sand with the granularity of 5-30 meshes to perform sand blasting and coarsening on the surface of the steel bar body, namely finishing the surface pretreatment of the steel bar body; step 5, feeding the cored wire into supersonic electric arc spraying equipment, and spraying the cored wire on the surface of the pretreated steel bar body to form a coating, wherein the parameters of the spraying process are spraying voltage of 30-35V, spraying current of 120-140A, spraying distance of 150-200 mm, spraying air pressure of 0.7-0.9 MPa and moving speed of a spray gun of 10-20 mm/s; and 6, sealing holes of the coating by using organic silicon resin or epoxy resin after spraying is finished, and obtaining the amorphous protective corrosion-resistant reinforcing steel bar.
2. The amorphous corrosion-resistant steel bar as claimed in claim 1, wherein said cored wire comprises the following components by weight percent: 26.5wt% of Cr, 12.5wt% of B12, 0.45wt% of C0.45wt% of P0.15wt%, Cu3.75wt%, Ni2.5wt%, Mo7.5wt%, Mn3.5wt%, Ti0.45wt% and the balance of Fe; the filling ratio of the cored wire was 37%.
3. The amorphous protective corrosion-resistant steel bar according to claim 1, wherein the drying temperature in step 1 is 90-100 ℃, and the drying time is 1-2 hours; the mixing time is 1-4 hours.
4. The amorphous protective corrosion-resistant steel bar according to claim 1, wherein the drying temperature in step 1 is 95 ℃ and the drying time is 1.5 hours; the mixing time was 2 hours.
5. The amorphous protective corrosion-resistant steel bar as claimed in claim 1, wherein the weight ratio of the mixed powder A to the steel bar body in the step 2 is 0.45: 1.
6. The amorphous protective corrosion-resistant steel bar as claimed in claim 1, wherein the drawing speed in step 3 is 170 mm/s.
7. The amorphous protective corrosion-resistant steel bar according to claim 1, wherein the parameters of the spraying process in the step 5 are as follows: the spraying voltage is 32V, the spraying current is 130A, the spraying distance is 160mm, the spraying air pressure is 0.8MPa, and the moving speed of the spray gun is 15 mm/s.
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| CN101191225A (en) * | 2006-11-22 | 2008-06-04 | 宝山钢铁股份有限公司 | Antiseptic wearable coat and coating method thereof |
| CN105648384A (en) * | 2016-01-14 | 2016-06-08 | 北京工业大学 | Cored wire used for preparing iron-based coating and coating preparation method of cored wire |
| CN107699843A (en) * | 2017-09-21 | 2018-02-16 | 河海大学 | A kind of powder cored filament material for preparing high content of amorphous coating and its preparation method and application |
| CN108130503A (en) * | 2016-12-01 | 2018-06-08 | 林艳红 | A kind of Fe bases arc spray coatings |
| CN108411240A (en) * | 2018-04-27 | 2018-08-17 | 北京福锐克森热喷涂科技有限公司 | A kind of powder cored filament material and preparation method thereof |
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| CN101191225A (en) * | 2006-11-22 | 2008-06-04 | 宝山钢铁股份有限公司 | Antiseptic wearable coat and coating method thereof |
| CN105648384A (en) * | 2016-01-14 | 2016-06-08 | 北京工业大学 | Cored wire used for preparing iron-based coating and coating preparation method of cored wire |
| CN108130503A (en) * | 2016-12-01 | 2018-06-08 | 林艳红 | A kind of Fe bases arc spray coatings |
| CN107699843A (en) * | 2017-09-21 | 2018-02-16 | 河海大学 | A kind of powder cored filament material for preparing high content of amorphous coating and its preparation method and application |
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