CN109023212A - A kind of amorphous protection corrosion resistant steel bar and preparation method thereof - Google Patents
A kind of amorphous protection corrosion resistant steel bar and preparation method thereof Download PDFInfo
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- CN109023212A CN109023212A CN201810981069.5A CN201810981069A CN109023212A CN 109023212 A CN109023212 A CN 109023212A CN 201810981069 A CN201810981069 A CN 201810981069A CN 109023212 A CN109023212 A CN 109023212A
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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
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Abstract
A kind of amorphous protection corrosion resistant steel bar and preparation method thereof.The powder cored filament material of coating includes following components by weight percentage on the reinforcing bar: 25 ~ 28wt% of Cr, 11 ~ 13wt% of B, 0.2 ~ 0.7wt% of C, 0.5 ~ 2.5wt% of P, 3 ~ 4.5wt% of Cu, 1.5 ~ 3.5wt% of Ni, 5 ~ 10wt% of Mo, 2 ~ 4wt% of Mn, 0.35 ~ 0.57wt% of Ti, surplus Fe.It, by than being put into mixed powder machine after mixing, will be put into 304 stainless steel belt slots of U-shaped, U-lag, which is healed up and passes through wire drawing die, is drawn into silk after component drying.Reinforcing bar ontology is pre-processed, using powder cored filament material as raw material, using Supersonic Arc Spraying Technique prepares coating, and uses sealing pores.Coating content of amorphous of the present invention, bond strength are high, and porosity is low, corrosion resistance is strong and low in cost, provides new way for steel bar anti-corrosion.
Description
Technical field
The invention belongs to Materials Processing Engineering field of constructional engineering material, and in particular to a kind of amorphous protection corrosion resistant steel bar
And preparation method thereof.
Background technique
The main reason for steel bar corrosion is reinforced concrete structure failure.At present for major port, bridge spanning the sea, dam
Etc. infrastructure, people more concerned be concrete endurance issues.But the actual life of many Large Infrastructure Projects relatively sets
The meter service life is short, especially marine and coastal, varieties in saline-alkali areas, due to Cl-Presence, the corrosion rate of reinforcing bar accelerates, substantially reduces
The service life of reinforced concrete structure, to national economy and people life property safety brings huge damage.
Amorphous alloy is a kind of amorphous homogeneous single phase, and the crystal defects such as crystal boundary, sub boundary, dislocation are not present in it,
With high intensity, toughness and wear and corrosion behavior.Compared with the crystal alloy of identical component, stainless steel, there is no crystalline substances for it
Weak link is corroded on boundary etc., thus has excellent Corrosion Protection.
Improving the corrosion proof measure of reinforcing bar at present mainly has: rebar surface applies organic erosion resistant coating, addition reinforcing steel bar corrosion inhibitor, increases
Strong basis plinth concrete carbonization preventing ability, negative (yin) pole Protection Code etc..Rebar surface organic anti-corrosive anchoring strength of coating is lower, construction
Difficulty is high and protecting film is easily damaged during transport, cloth muscle；Once reinforcing steel bar corrosion inhibitor Anodic fashioned iron bar rust inhibitor dosage is not
Foot may accelerated corrosion, and cathode type reinforcing steel bar corrosion inhibitor be used alone when, effect is unobvious, and dosage is generally large, cost
It is higher；The enhancing anti-carbonization ability of base concrete has preferable impermeable ability, but protective agent is inflammable, and toxic, to exhaling
It is unfavorable to inhale, and can corrode skin；Negative (yin) pole Protection Code anode needs replacing and the limitation by use condition.As it can be seen that mesh
Preceding reinforcing bar safeguard procedures play certain protection effect, but can not effectively solve the etching problem of reinforcing bar, and amorphous protects
Coating has excellent corrosion resistance energy, this provides a new solution route to reinforcing bar protection.
Plasma spray technology is very mature by the development of many years, and is widely used in coating preparation field.At present
Common plasma spray technology mainly has flame-spraying, electric arc spraying, plasma spraying, detonation flame spraying, supersonic flame spraying etc..
Compared to flame-spraying, the coating of Ultrasonic Arc Sprayed preparation has higher bond strength, lower porosity, and surpasses
The cost of velocity of sound electric arc spraying is far below plasma spraying, detonation flame spraying and supersonic flame spraying again.Therefore, with supersonic speed electricity
Arc spraying technology prepares a kind of amorphous protection corrosion resistant steel bar, can reduce production cost, and obtain optimal cost performance.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of amorphous protection corrosion resistant steel bar and its preparation sides
Method, gained reinforcing bar have excellent corrosion resistance, can significantly improve the durability of reinforced concrete structure, and are steel bar anti-corrosion
Erosion provides new approach.
A kind of amorphous protection corrosion resistant steel bar, including reinforcing bar ontology and coating, the coating spraying is in reinforcing bar body surface, institute
It states coating and is sprayed by powder cored filament material and formed, the powder cored filament material includes following components by weight percentage: Cr 25~
11~13wt% of 28wt%, B, 0.2~0.7wt% of C, 0.5~2.5wt% of P, 3~4.5wt% of Cu, Ni 1.5~
5~10wt% of 3.5wt%, Mo, 2~4wt% of Mn, 0.35~0.57wt% of Ti, surplus Fe；The diameter of powder cored filament material is
2mm, filling rate are 35~40%.
As preferably, the powder cored filament material includes following components by weight percentage: Cr 26.5wt%, B
12.5wt%, C 0.45wt%, P 0.15wt%, Cu 3.75wt%, Ni 2.5wt%, Mo 7.5wt%, Mn 3.5wt%,
Ti 0.45wt%, surplus Fe；The filling rate of powder cored filament material is 37%.
The preparation method of above-mentioned amorphous protection corrosion resistant steel bar, comprising the following steps:
Step 1, the powder containing 10 kinds of elements needed for powder cored filament material is weighed, puts into after dry in mixed powder machine and is mixed under room temperature
Mixed powder A；
Step 2,304 stainless steel belts are selected, are bundled into U-shaped as clad, then mixed powder A is added to stainless steel belt
U-lag in, the weight ratio of the mixed powder A and reinforcing bar ontology is (0.35~0.57): 1；
Step 3, U-lag is healed up makes mixed powder A cladding wherein, then passes through wire drawing die for it with the speed of 150~200mm/s
Degree, which is drawn, dials tube reducing, obtains the powder cored filament material that diameter is 2mm；
Step 4, by after the derusting oil removing of reinforcing bar body surface, in the case where air pressure is 0.7~0.9MPa, use granularity for 5~30 purposes
Corundum sand carries out sandblasting roughening to reinforcing bar body surface, i.e. the pretreatment of completion reinforcing bar body surface；
Step 5, powder cored filament material is sent into Ultrasonic Arc Sprayed equipment, is sprayed on pretreated reinforcing bar body surface and is formed
Coating, wherein the parameter of spraying process be 30~35V of spray voltage, 120~140A of spraying current, spray distance 150~
200mm sprays 0.7~0.9MPa of air pressure, 10~20mm/s of spray gun movement speed；
Step 6, coating progress sealing pores are protected to get amorphous using organic siliconresin or epoxy resin after the completion of spraying resistance to
Lose reinforcing bar.
It is that dry temperature is 90~100 DEG C in step 1 as improved, drying time is 1~2 hour；Incorporation time
It is 1~4 hour.
Further improved to be, dry temperature is 95 DEG C in step 1, and drying time is 1.5 hours；Incorporation time is 2
Hour.
It is that the weight ratio of mixed powder A described in step 2 and reinforcing bar ontology is 0.45: 1 as improved.
It is that drawing speed is 170mm/s in step 3 as improved.
The parameter of spraying process in step 5 as improved are as follows: spray voltage 32V, spraying current 130A, spraying away from
From 160mm, air pressure 0.8MPa, spray gun movement speed 15mm/s are sprayed.
The utility model has the advantages that
1, in the ingredient of the powder cored filament material of amorphous protection corrosion resistant steel bar, B, C, P are small atom, can reduce the critical of amorphous alloy
Cooling velocity improves the amorphous formation ability of amorphous protective coating；Cr, Cu, Ni, Mn, Ti belong to intermediate atoms, and Mo is big former
Son；The reasonably combined mismatch that can make system of large, medium and small atom increases, and is conducive to the amorphous formation ability of raising system；
In addition the electrode potential of amorphous protective coating can be improved in Cr, to improve the corrosion resistance of reinforcing bar, amorphous is can be improved in Cu
The ability of the antimicrobial corrosion of protective coating, Mo can be improved amorphous protective coating and resist ClˉThe ability of erosion, Ti can be formed
Fine and close oxidation film layer, improves the corrosion resistance of amorphous protective coating, and Ni can improve the toughness of amorphous protective coating, the addition of Mn
The mismatch that atom can be increased improves the amorphous formation ability of protective coating；
2, it is prepared using Supersonic Arc Spraying Technique, can get low oxide content, fine and close continuous amorphous coating, coating is several
Be free of crystal phase, porosity < 5%, 47~55MPa of anchoring strength of coating；
3, the amorphous protection corrosion resistant steel bar prepared has excellent corrosion resistance.The corrosion potential in Simulated pore solution
About -460mV is higher than chrome layer (- 554mV)；Corrosion electric current density is about 6.800 μ Acm-2, it is lower than chrome layer (14.12 μ
A·cm-2), therefore its corrosion resistance is better than chrome layer；
4, the low raw-material cost that the present invention uses, most of is commercial alloys, and adopts Supersonic Arc Spraying Technique preparation,
Cost is relatively low.
Detailed description of the invention
Fig. 1 is the schematic diagram of reinforcing bar longitudinal section, wherein (a) is reinforcing bar prepared by embodiment 1, (b) for without sealing pores
Reinforcing bar, 1- reinforcing bar ontology, 2- amorphous coating, the hole after 3- sealing of hole, 4- oxide, the hole of the non-sealing pores of 5-；
Fig. 2 is the metallograph that amorphous prepared by embodiment 3 protects coating in corrosion resistant steel bar；
Fig. 3 is the XRD spectrum that amorphous prepared by embodiment 3 protects coating in corrosion resistant steel bar；
Fig. 4 is that the amorphous of Examples 1 to 5 preparation protects the Tafel polarization curve of coating in corrosion resistant steel bar.
Specific embodiment
Specific material proportion, process conditions and its result are merely to illustrate the present invention in embodiment, without should also not
It will limit the present invention described in detail in claims.Unless otherwise specified, technological means used is ability in embodiment
Conventional means known to field technique personnel.
Porosity in present embodiment using DT2000 image analysis software according to gray level method measurement coating.Using
2273 electrochemical workstation of PARSTAT measures the corrosion potential and corrosion electric current density of reinforcing bar in Simulated pore solution.
Embodiment 1
A kind of amorphous protects corrosion resistant steel bar, and including reinforcing bar ontology and with a thickness of 300-500 μm of coating, the coating spraying is in steel
Muscle body surface, the coating is sprayed by powder cored filament material to be formed, and the powder cored filament material includes following group by weight percentage
Point: 27.7wt%Cr, 13wt%B, 0.7wt%C, 2.5wt%P, 4.5wt%Cu, 3.5wt%Ni, 9.5wt%Mo, 4wt%
Mn, 0.45wt%Ti, surplus Fe；The diameter of powder cored filament material is 2mm, and the filling rate of powder cored filament material is 37%.
The preparation method of above-mentioned amorphous protection corrosion resistant steel bar, comprising the following steps:
Step 1, the powder containing 10 kinds of elements needed for powder cored filament material is weighed, and drying is thrown after 1.5 hours at 95 DEG C by powder
Enter to mix 2 hours obtaining mixed powder A under room temperature in mixed powder machine；
Step 2,304 stainless steel belts are selected, are bundled into U-shaped as clad, then mixed powder A is added to stainless steel belt
U-lag in, the weight ratio of the mixed powder A and reinforcing bar ontology is 0.45: 1；
Step 3, U-lag is healed up makes mixed powder A cladding wherein, then will be drawn and is dialled with the speed of 170mm/s by wire drawing die
Tube reducing obtains the powder cored filament material that diameter is 2mm；
Step 4, by after the derusting oil removing of reinforcing bar body surface, in the case where air pressure is 0.8MPa, use granularity for the corundum sand of 30 mesh,
Sandblasting roughening is carried out to reinforcing bar body surface, i.e. the pretreatment of completion reinforcing bar body surface；
Step 5, powder cored filament material is sent into Ultrasonic Arc Sprayed equipment, is sprayed on pretreated reinforcing bar body surface and is formed
Coating, wherein the parameter of spraying process is spray voltage 32V, spraying current 130A, spray distance 150mm, sprays air pressure
0.8MPa, spray gun movement speed 15mm/s；
Step 6, coating progress sealing pores are protected to get amorphous using organic siliconresin or epoxy resin after the completion of spraying resistance to
Lose reinforcing bar.
Embodiment 2
A kind of amorphous protection corrosion resistant steel bar, including reinforcing bar ontology and coating, the coating spraying is in reinforcing bar body surface, the painting
Layer is sprayed by powder cored filament material to be formed, and the powder cored filament material includes following components by weight percentage: 27.3wt%Cr,
12.5wt%B, 0.57wt%C, 0.65wt%P, 4.13wt%Cu, 3.2wt%Ni, 8.75wt%Mo, 3.5wt%Mn,
0.45wt%Ti, surplus Fe；The diameter of powder cored filament material is 2mm, and the filling rate of powder cored filament material is 37%.
The preparation method of above-mentioned amorphous protection corrosion resistant steel bar, comprising the following steps:
Step 1, the powder containing 10 kinds of elements needed for powder cored filament material is weighed, and drying is thrown after 1.5 hours at 95 DEG C by powder
Enter to mix 2 hours obtaining mixed powder A under room temperature in mixed powder machine；
Step 2,304 stainless steel belts are selected, are bundled into U-shaped as clad, then mixed powder A is added to stainless steel belt
U-lag in, the weight ratio of the mixed powder A and reinforcing bar ontology is 0.45: 1；
Step 3, U-lag is healed up makes mixed powder A cladding wherein, then will be drawn and is dialled with the speed of 170mm/s by wire drawing die
Tube reducing obtains the powder cored filament material that diameter is 2mm；
Step 4, by after the derusting oil removing of reinforcing bar body surface, in the case where air pressure is 0.8MPa, use granularity for the corundum sand of 30 mesh,
Sandblasting roughening is carried out to reinforcing bar body surface, i.e. the pretreatment of completion reinforcing bar body surface；
Step 5, powder cored filament material is sent into Ultrasonic Arc Sprayed equipment, is sprayed on pretreated reinforcing bar body surface and is formed
Coating, wherein the parameter of spraying process is spray voltage 32V, spraying current 130A, spray distance 150mm, sprays air pressure
0.8MPa, spray gun movement speed 15mm/s；
Step 6, coating progress sealing pores are protected to get amorphous using organic siliconresin or epoxy resin after the completion of spraying resistance to
Lose reinforcing bar.
Embodiment 3
A kind of amorphous protection corrosion resistant steel bar, including reinforcing bar ontology and coating, the coating spraying is in reinforcing bar body surface, the painting
Layer is sprayed by powder cored filament material to be formed, and the powder cored filament material includes following components by weight percentage: 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, surplus Fe；The diameter of powder cored filament material is 2mm, and the filling rate of powder cored filament material is 37%.
The preparation method of above-mentioned amorphous protection corrosion resistant steel bar, comprising the following steps:
Step 1, the powder containing 10 kinds of elements needed for powder cored filament material is weighed, and drying is thrown after 1.5 hours at 95 DEG C by powder
Enter to mix 2 hours obtaining mixed powder A under room temperature in mixed powder machine；
Step 2,304 stainless steel belts are selected, are bundled into U-shaped as clad, then mixed powder A is added to stainless steel belt
U-lag in, the weight ratio of the mixed powder A and reinforcing bar ontology is 0.45: 1；
Step 3, U-lag is healed up makes mixed powder A cladding wherein, then will be drawn and is dialled with the speed of 170mm/s by wire drawing die
Tube reducing obtains the powder cored filament material that diameter is 2mm；
Step 4, by after the derusting oil removing of reinforcing bar body surface, in the case where air pressure is 0.8MPa, use granularity for the corundum sand of 30 mesh,
Sandblasting roughening is carried out to reinforcing bar body surface, i.e. the pretreatment of completion reinforcing bar body surface；
Step 5, powder cored filament material is sent into Ultrasonic Arc Sprayed equipment, is sprayed on pretreated reinforcing bar body surface and is formed
Coating, wherein the parameter of spraying process is spray voltage 32V, spraying current 130A, spray distance 160mm, sprays air pressure
0.8MPa, spray gun movement speed 15mm/s；
Step 6, coating progress sealing pores are protected to get amorphous using organic siliconresin or epoxy resin after the completion of spraying resistance to
Lose reinforcing bar.
As seen from Figure 2, coating is in typical lamellar tissue in the amorphous protection corrosion resistant steel bar, this is because Supersonic
Most atomization particles are struck on matrix in fast arc spray process with the state melted or part is melted, and particle is spread rapidly
Simultaneously deposition cure is opened up, so as to form stratiform tower binding structure.There are the oxides of a small amount of black in stratiform gap, this is because
A small amount of micro- molten, half fusant and atomization particle are contacted with air so as to cause oxidation.There is also the micro- gas of interlayer in stratiform gap
Hole, this is because the atomization particle gas that self-contained partial air and itself metallurgical reaction release in flight course comes not
And caused by overflowing.
As seen from Figure 3, show that protective coating is main there are apparent amorphous diffusing scattering peak in the XRD spectrum of coating
By amorphous phase composition.
Embodiment 4
A kind of amorphous protection corrosion resistant steel bar, including reinforcing bar ontology and coating, the coating spraying is in reinforcing bar body surface, the painting
Layer is sprayed by powder cored filament material to be formed, and the powder cored filament material includes following components by weight percentage: 25.7wt%Cr,
11.5wt%B, 0.32wt%C, 1.2wt%P, 3.37wt%Cu, 2.1wt%Ni, 6.25wt%Mo, 2.5wt%Mn,
0.45wt%Ti, surplus Fe；The diameter of powder cored filament material is 2mm；The filling rate of powder cored filament material is 37%.
The preparation method of above-mentioned amorphous protection corrosion resistant steel bar, comprising the following steps:
Step 1, the powder containing 10 kinds of elements needed for powder cored filament material is weighed, and drying is thrown after 1.5 hours at 95 DEG C by powder
Enter to mix 2 hours obtaining mixed powder A under room temperature in mixed powder machine；
Step 2,304 stainless steel belts are selected, are bundled into U-shaped as clad, then mixed powder A is added to stainless steel belt
U-lag in, the weight ratio of the mixed powder A and reinforcing bar ontology is 0.45: 1, and the filling rate of powder core is 37%；
Step 3, U-lag is healed up makes mixed powder A cladding wherein, then will be drawn and is dialled with the speed of 170mm/s by wire drawing die
Tube reducing obtains the powder cored filament material that diameter is 2mm；
Step 4, by after the derusting oil removing of reinforcing bar body surface, in the case where air pressure is 0.8MPa, use granularity for the corundum sand of 30 mesh,
Sandblasting roughening is carried out to reinforcing bar body surface, i.e. the pretreatment of completion reinforcing bar body surface；
Step 5, powder cored filament material is sent into Ultrasonic Arc Sprayed equipment, is sprayed on pretreated reinforcing bar body surface and is formed
Coating, wherein the parameter of spraying process is spray voltage 30V, spraying current 120A, spray distance 160mm, sprays air pressure
0.8MPa, spray gun movement speed 15mm/s；
Step 6, coating progress sealing pores are protected to get amorphous using organic siliconresin or epoxy resin after the completion of spraying resistance to
Lose reinforcing bar.
Embodiment 5
A kind of amorphous protection corrosion resistant steel bar, including reinforcing bar ontology and coating, the coating spraying is in reinforcing bar body surface, the painting
Layer is sprayed by powder cored filament material to be formed, and the powder cored filament material includes following components by weight percentage: 25.5wt%Cr,
11.2wt%B, 0.25wt%C, 0.52wt%P, 3.2wt%Cu, 1.5wt%Ni, 5.2wt%Mo, 2.1wt%Mn,
0.45wt%Ti, surplus Fe；The diameter of powder cored filament material is 2mm；The filling rate of powder cored filament material is 37%；.
The preparation method of above-mentioned amorphous protection corrosion resistant steel bar, comprising the following steps:
Step 1, the powder containing 10 kinds of elements needed for powder cored filament material is weighed, and drying is thrown after 1.5 hours at 95 DEG C by powder
Enter to mix 2 hours obtaining mixed powder A under room temperature in mixed powder machine；
Step 2,304 stainless steel belts are selected, are bundled into U-shaped as clad, then mixed powder A is added to stainless steel belt
U-lag in, the weight ratio of the mixed powder A and reinforcing bar ontology is 0.45: 1；
Step 3, U-lag is healed up makes mixed powder A cladding wherein, then will be drawn and is dialled with the speed of 170mm/s by wire drawing die
Tube reducing obtains the powder cored filament material that diameter is 2mm；
Step 4, by after the derusting oil removing of reinforcing bar body surface, in the case where air pressure is 0.8MPa, use granularity for the corundum sand of 30 mesh,
Sandblasting roughening is carried out to reinforcing bar body surface, i.e. the pretreatment of completion reinforcing bar body surface；
Step 5, powder cored filament material is sent into Ultrasonic Arc Sprayed equipment, is sprayed on pretreated reinforcing bar body surface and is formed
Coating, wherein the parameter of spraying process is spray voltage 35V, spraying current 140A, spray distance 170mm, sprays air pressure
0.8MPa, spray gun movement speed 15mm/s；
Step 6, coating progress sealing pores are protected to get amorphous using organic siliconresin or epoxy resin after the completion of spraying resistance to
Lose reinforcing bar.
Above-described embodiment 1~5 prepares amorphous protection corrosion resistant steel bar, and in Simulated pore solution, (concrete simulates hole
Liquid configuration: three component solution groups become 0.6mol/L KOH+0.2mol/L NaOH+0.001mol/L Ca (OH)2) in corrosion
Current potential and corrosion electric current density size, testing result are as shown in table 1.
The performance parameter of the amorphous protection corrosion resistant steel bar prepared under 1 different formulations of table
| Embodiment | Corrosion potential/mV | Corrosion electric current density/μ Acm-2 |
| 1 | -523 | 9.458 |
| 2 | -471 | 7.427 |
| 3 | -459 | 6.782 |
| 4 | -551 | 10.340 |
| 5 | -595 | 12.540 |
In conjunction with Fig. 4 and table 1 it is found that the corrosion potential highest of amorphous protection corrosion resistant steel bar prepared by embodiment 3, about -459mV are high
In chrome layer (- 554mV)；Corrosion current is minimum, about 6.782 μ A/cm2, it is lower than chrome layer (14.12 μ Acm-2), therefore its is anti-corrosion
Property be higher than chrome layer, corrosion resistance is best.
The foregoing is only a preferred embodiment of the present invention, the scope of protection of the present invention is not limited to this, it is any ripe
Know those skilled in the art within the technical scope of the present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are fallen within the protection scope of the present invention.
Claims (8)
1. a kind of amorphous protects corrosion resistant steel bar, including reinforcing bar ontology and coating, the coating spraying is special in reinforcing bar body surface
Sign is that the coating is sprayed by powder cored filament material to be formed, and the powder cored filament material includes following components by weight percentage: Cr
25~28wt%、B 11~13wt%、C 0.2~0.7wt%、P 0.5~2.5wt%、Cu 3~4.5wt%、Ni 1.5~3.5wt%、Mo 5~
2 ~ 4wt% of 10wt%, Mn, 0.35 ~ 0.57wt% of Ti, surplus Fe；The diameter of powder cored filament material is 2mm, and filling rate is 35 ~ 40%.
2. a kind of amorphous according to claim 1 protects corrosion resistant steel bar, which is characterized in that the powder cored filament material includes following
Component by weight percentage: Cr 26.5wt%, B12.5wt%, C0.45wt%, P0.15wt%, Cu3.75wt%,
Ni2.5wt%, Mo7.5wt%, Mn3.5wt%, Ti0.45wt%, surplus Fe；The filling rate of powder cored filament material is 37%.
3. based on a kind of preparation method of amorphous protection corrosion resistant steel bar described in claim 1, which is characterized in that including following step
It is rapid: step 1, to weigh the powder containing 10 kinds of elements needed for powder cored filament material, put into after dry in mixed powder machine and mixed under room temperature
Mixed powder A；Step 2,304 stainless steel belts are selected, are bundled into U-shaped as clad, then mixed powder A is added to stainless steel
In the U-lag of steel band, the weight ratio of the mixed powder A and reinforcing bar ontology is (0.35 ~ 0.57): 1；Step 3, U-lag is healed up
Make mixed powder A cladding wherein, it is drawn by wire drawing die with the speed of 150 ~ 200mm/s then and dials tube reducing, obtaining diameter is
The powder cored filament material of 2mm；Step 4, by after the derusting oil removing of reinforcing bar body surface, in the case where air pressure is 0.7 ~ 0.9MPa, use granularity for 5
The corundum sand of ~ 30 mesh carries out sandblasting roughening to reinforcing bar body surface, i.e. the pretreatment of completion reinforcing bar body surface；Step 5, will
Powder cored filament material is sent into Ultrasonic Arc Sprayed equipment, is sprayed on pretreated reinforcing bar body surface and is formed coating, wherein spraying
Apply technique parameter be 30 ~ 35V of spray voltage, 120 ~ 140A of spraying current, 150 ~ 200mm of spray distance, spraying air pressure 0.7 ~
0.9MPa, 10 ~ 20mm/s of spray gun movement speed；Step 6, after the completion of spraying using organic siliconresin or epoxy resin to coating into
Row sealing pores protect corrosion resistant steel bar to get amorphous.
4. a kind of preparation method of amorphous protection corrosion resistant steel bar according to claim 3, which is characterized in that done in step 1
Dry temperature is 90 ~ 100 DEG C, and drying time is 1 ~ 2 hour；Incorporation time is 1 ~ 4 hour.
5. a kind of preparation method of amorphous protection corrosion resistant steel bar according to claim 4, which is characterized in that done in step 1
Dry temperature is 95 DEG C, and drying time is 1.5 hours；Incorporation time is 2 hours.
6. a kind of preparation method of amorphous protection corrosion resistant steel bar according to claim 3, which is characterized in that institute in step 2
The weight ratio for stating mixed powder A and reinforcing bar ontology is 0.45:1.
7. a kind of preparation method of amorphous protection corrosion resistant steel bar according to claim 3, which is characterized in that drawn in step 3
Pulling out speed is 170mm/s.
8. a kind of preparation method of amorphous protection corrosion resistant steel bar according to claim 3, which is characterized in that sprayed in step 5
Apply the parameter of technique are as follows: spray voltage 32V, spraying current 130A, spray distance 160mm spray air pressure 0.8MPa, and spray gun is mobile
Speed 15mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810981069.5A CN109023212B (en) | 2018-08-27 | 2018-08-27 | Amorphous protective corrosion-resistant reinforcing steel bar and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810981069.5A CN109023212B (en) | 2018-08-27 | 2018-08-27 | Amorphous protective corrosion-resistant reinforcing steel bar and preparation method thereof |
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| CN115287577A (en) * | 2022-05-04 | 2022-11-04 | 南京农业大学 | High-wear-resistance iron-based amorphous high-speed electric arc spraying powder core wire and application thereof |
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| CN115287577B (en) * | 2022-05-04 | 2023-10-13 | 南京农业大学 | High-wear-resistance iron-based amorphous high-speed electric arc spraying powder core wire and application thereof |
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| CN109023212B (en) | 2020-09-15 |
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