WO2017092065A1 - Method for preparing corrosion-resistant coating of marine well drilling platform - Google Patents

Method for preparing corrosion-resistant coating of marine well drilling platform Download PDF

Info

Publication number
WO2017092065A1
WO2017092065A1 PCT/CN2015/096791 CN2015096791W WO2017092065A1 WO 2017092065 A1 WO2017092065 A1 WO 2017092065A1 CN 2015096791 W CN2015096791 W CN 2015096791W WO 2017092065 A1 WO2017092065 A1 WO 2017092065A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder
corrosion
coating
drilling platform
preparing
Prior art date
Application number
PCT/CN2015/096791
Other languages
French (fr)
Chinese (zh)
Inventor
王守仁
汤以品
王瑞国
张肖
张来斌
尹建国
Original Assignee
山东开泰抛丸机械股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 山东开泰抛丸机械股份有限公司 filed Critical 山东开泰抛丸机械股份有限公司
Publication of WO2017092065A1 publication Critical patent/WO2017092065A1/en

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02Spray pistols; Apparatus for discharge
    • B05B7/04Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C24/00Coating starting from inorganic powder
    • C23C24/02Coating starting from inorganic powder by application of pressure only
    • C23C24/04Impact or kinetic deposition of particles

Definitions

  • the present invention relates to a method of making a corrosion resistant coating using an offshore drilling platform.
  • the steel structure in offshore drilling platforms has long been in the corrosive environment of marine salt spray, seawater ionization and chemical substances.
  • the traditional anti-corrosion coatings are mostly epoxy coatings, but they have adhesion, seawater corrosion resistance and poor cathodic resistance. Therefore, the offshore platform needs to be repaired or repainted in less than one to two years, not only the maintenance cost. It is huge and affects the use of offshore platforms.
  • high-entropy alloy uses the design idea of equimolar mass ratio of more than 4 elements, with high chaos and ultra-high glass forming ability, so it has high strength, high hardness and high wear resistance. Good properties such as high temperature, high temperature resistance and high corrosion resistance. Especially in terms of corrosion resistance, it is much better than steel such as stainless steel.
  • high-entropy alloy coating preparation methods include laser coating, electrochemical deposition and magnetron sputtering. These methods have their own advantages and disadvantages. Among them, the electrochemical deposition method is slow in formation and limited by the size of the workpiece, and is suitable for preparing coatings with small thickness.
  • the efficiency of the coating prepared by the magnetron sputtering method is high, but it is limited by equipment and the production cost is high;
  • the coating method is a new technology developed in recent years. It is a high-entropy alloy that melts high-entropy alloy powder onto the surface of the substrate through a higher temperature heat source and a larger degree of aerodynamic force to obtain a certain thickness and desired properties. coating. This process has been relatively extensive, but its use is still limited. Due to the diversity of high-entropy alloy components and the extremely high aerodynamics in the laser heating process, the temperature gradient between the coating and the substrate is too large, resulting in large thermal stress in the coating or over-extension, resulting in The generation of cracks.
  • the laser-coated structure is a rapidly solidified as-cast structure, and there is segregation at the grain boundary.
  • the conventional one is a single feed port, and the gas is heated in the front section of the nozzle, which causes the heat to be greatly reduced when it reaches the nozzle, so that the heating effect of the powder is greatly discounted.
  • Aerodynamic spraying is a type of compressed air that drives metal particles so that they are extremely high at full speed.
  • a new type of spraying technique that strikes a substrate and deposits a coating by plastic deformation through such a violent collision. It has the advantage of eliminating the effects of thermal stress deformation, oxidation, and coarse grain of thermal spray.
  • the object of the present invention is to provide a novel method for preparing an anti-corrosion coating for an offshore drilling platform, which uses a five-component high-entropy alloy powder of Al-Cr-Fe-Mn-Ni and Zn.
  • the powder of 7:1 powder is used as raw material, and the anti-corrosion coating is prepared on the steel substrate of the offshore drilling platform through the double feed nozzle and aerodynamic spraying technology.
  • the present invention adopts the following technical solutions:
  • the invention discloses a preparation method of an anti-corrosion coating for an offshore drilling platform, which is characterized in that a powder of Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder and Zn powder mixed with a ratio of 7:1 (mass ratio) is used as a raw material.
  • the feed nozzle and aerodynamic spray technology prepare an anti-corrosion coating on the steel substrate of the offshore drilling platform.
  • the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder and the Zn powder are heated from the two inlets respectively through the double feed nozzle.
  • the heater is heated so that the powder temperature reaches 300-400 ° C.
  • the power of the spray is provided by an air compressor with a pressure of 3-5 MPa and a spray distance of 3-5 cm.
  • the chemical composition ratio of the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder is an equimolar ratio of 1:1:1:1:1. It is possible to avoid the formation of intermetallic compounds between the powder elements, which are all brittle substances, which are not good for corrosion protection and hardness improvement. At the same time, the equimolar ratio design idea can make the five elements form a high entropy solid solution, which is very helpful for corrosion protection. Because the high-entropy solid solution is a very stable structure, it is not easy to react with other corrosive liquids.
  • the chemical composition of the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder has a purity requirement of 99.9%.
  • the preparation process of the Al-Cr-Fe-Mn-Ni five-element high-entropy alloy powder is carried out by mixing the powder into an agate tank, being filled with He gas, and being ball-milled in a mechanical ball mill at a speed of 360 min/s. Ball milling time 100h, the ball to material ratio was 9:1, and after standing for 3 hours, the can was opened in a glove box, and then the mixed powder was placed in a vacuum drying oven and dried at 100 ° C for 1 hour, and stored for use.
  • the ball milling time is 100h, and the ball to material ratio is 9:1.
  • the reason for choosing the time and the ball-to-batch ratio is that if the time is too long or the ball-to-batch ratio is not suitable, the powder will not easily form a high-entropy solid solution, and the solid solution is due to the mixing entropy. It is particularly large, so it is not easy to react, and it is very important for corrosion prevention. Therefore, after a large number of experiments, such parameters can be obtained, and this parameter can quickly obtain a high-entropy solid solution structure. This is also confirmed by the subsequent XRD pattern, under which a powder of high entropy solid solution structure is formed.
  • the cans were opened in a glove box.
  • the purpose is to obtain a five-component high-entropy alloy powder of Al-Cr-Fe-Mn-Ni which is extremely resistant to corrosion.
  • the corrosion-resistant coating has a thickness of 10-600 um.
  • the thickness control is determined by the time of spraying.
  • the base body is sanded with 150# and 600# sandpaper respectively to remove the oil stain and scale, and the metal luster is leaked to increase the interface bonding ability.
  • the Zn powder has a particle size requirement of less than 20 um and a purity requirement of 99.99%. Its purpose is to provide cathodic protection for Zn to reduce the electrochemical corrosion of seawater.
  • a spraying device for an anti-corrosion coating of an offshore drilling platform comprising a compressor and a control system, characterized in that it further comprises a double feed nozzle connected to the compressor, wherein the double feed nozzle is generally in the shape of a truncated cone, There are two inlets 32 on both sides of the tail end of the truncated cone.
  • the inlet port 32 communicates with the mixing chamber 33.
  • the mixing chamber 33 communicates with the discharge port 34 at the top end of the truncated cone.
  • One of the inlets is connected with The storage tank I is connected, and a feed valve II is arranged between the inlet port and the storage tank I, and another inlet port is connected with the storage tank II, and a feed is provided between the inlet port and the storage tank II.
  • the material valve I; the double inlet nozzle is provided with a spiral heater.
  • the high entropy alloy powder is sprayed, the spraying process temperature is lower, the high entropy alloy has a small influence on the high entropy solid solution morphology, reduces the phase transformation in the powder, and reduces the deformation and internal stress of the matrix material. .
  • the high-entropy solid solution has the characteristics of high degree of chaos and many components, which makes the powder extremely stable, and the hardness, anti-friction performance and corrosion resistance of the coating are extremely high.
  • the high-entropy alloy powder and the Zn powder are mixed in a certain ratio, and Zn is used as a cathodic protection metal, which has more excellent resistance to seawater electrolytic corrosion.
  • the A1-Cr-Fe-Mn-Ni five-component high-entropy alloy powder with high stability and corrosion resistance is used, and the cathodic protection metal Zn powder is added at the same time.
  • the corrosion resistance is superior.
  • the aerodynamic sprayed Al-Cr-Fe-Mn-Ni five-element high-entropy alloy coating process of the present invention has the characteristics of controllable thickness, compactness and strong matrix bonding compared with the existing high-entropy alloy coating preparation process. At the same time, it is easier to maintain the high entropy solid solution morphology of the powder under low temperature, which is very helpful for coating stability, coating strength and wear resistance.
  • aerodynamic spraying to prepare Al-Cr-Fe-Mn-Ni five-component high-entropy alloy anti-corrosion coating is a very effective method, which fills the blank of anti-corrosion coating preparation at home and abroad.
  • the double feed hole nozzle aerodynamic spraying technology pioneered by the invention is more compact and simpler in equipment than the conventional aerodynamic spraying technology, and is convenient to be applied to various spraying occasions, and the adaptability is greatly improved.
  • the powder flows into the nozzle more uniformly under the action of siphoning, and the whole nozzle is spirally heated to ensure that the temperature of the mixed powder is substantially constant at 350 ° C, so that the plasticity of the powder is improved, and it is easier to combine with the substrate, and finally the prepared coating is finally made.
  • the layer is more dense and the bonding performance is better.
  • the double feed nozzle of the invention can be combined with different types of powder while heating the screw at the nozzle, which greatly increases the activity of the powder. Conducive to the formation of the coating. Together with the concept of a double nozzle, different powders can be prepared simultaneously onto the surface of the substrate.
  • Figure 1 is a schematic view of an aerodynamic spraying device for a double inlet nozzle used in the present invention
  • FIG. 2 is a scanning electron micrograph of the anticorrosive coating of the offshore platform of the present invention; the cross-sectional morphology of the coating when the spraying temperature is 300 ° C and the spraying pressure is 4 MPa;
  • FIG. 3 is a scanning electron micrograph of the anticorrosive coating of the marine platform of the present invention.
  • 4 is a scanning electron micrograph of the anti-corrosion coating of the offshore platform of the present invention; the cross-sectional morphology of the coating when the spraying temperature is 400 ° C and the spraying pressure is 4 MPa;
  • Fig. 5 is a scanning electron micrograph of the anticorrosive coating of the offshore platform of the present invention; the cross-sectional morphology of the coating is sprayed at a temperature of 450 ° C and a spray pressure of 4 MPa. It can be seen from the figure that the coating under the parameters (d) is dense and tightly combined, which is the optimal technical parameter.
  • Fig. 6 is an X-ray diffraction spectrum of the corrosion resistant coating of the offshore platform of the present invention, and the high-entropy alloy structure of the coating is a body-centered cubic structure.
  • Figure 7 is a schematic view showing the structure of a double feed nozzle.
  • Figure 8 is a scanning electron micrograph of a prior art coating
  • Figure 9 is a scanning electron micrograph of a prior art coating
  • Figure 10 is a scanning electron micrograph of a prior art coating.
  • a spraying device for anticorrosive coating of an offshore drilling platform comprising a compressor 4 and a control system 1, further comprising a double inlet nozzle 3 communicating with the compressor 1, the double inlet nozzle 3 being generally in the shape of a truncated cone
  • Two inlet ports 32 are provided on both sides of the tail end of the trough, and the inlet port 32 communicates with the mixing chamber 33, and the mixing chamber 33 communicates with the discharge port 34 at the top end of the truncated cone, one of which is fed
  • the port 32 is connected to the storage tank I21, and a feed valve II24 is arranged between the inlet port 32 and the storage tank I21, and another inlet port 32 is connected with the storage barrel II22 at the inlet port 32 and the storage barrel.
  • a feed valve I23 is provided between II22; the double feed nozzle 3 is provided with a spiral heater.
  • the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder is placed in the storage tank I21 and the Zn powder is placed in the storage tank II22, and the feed valve I23 and the feed valve II24 are adjusted.
  • the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder and the Zn powder feed mass ratio are adjusted to 7:1.
  • the compressor 4 is turned on so that the air pressure enters the double feed port nozzle 3, and the double feed nozzle carries the heater 31 for heating the powder.
  • the double feed nozzle has a truncated cone shape as a whole, and two inlet ports 32 are provided on both sides of the tail end of the truncated cone.
  • the spout 32 communicates with the mixing chamber 33, and the mixing chamber 33 communicates with the discharge port 34 at the top end of the truncated cone.
  • the spraying raw material is a self-made Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder
  • the sprayed substrate is a marine platform steel structure.
  • the specific process parameters are as follows: the chemical composition distribution ratio is an equimolar ratio of 1:1:1:1:1; the purity requirement is 99.9%; the powder is placed in an agate tank for mixing, He gas protection, ball milling in a mechanical ball mill , the speed is 360min/s, the ball milling time is 100h, the ball ratio is 9:1, the ball is allowed to stand for 3 hours, the can is opened in the glove box, and then the mixed powder is placed in a vacuum drying oven and dried at 100 ° C for 1 hour. Store for backup.
  • the specific parameters of the above spraying device are as follows: the powder heating temperature is 300-400 ° C, the spraying distance is 3-5 cm, and the spraying pressure is 3-5 MPa.
  • the base body is sanded with 150# and 600# sandpaper respectively to remove the oil stain and scale, and the metal luster is leaked to increase the interface bonding ability.
  • the anti-corrosion coating material of the offshore drilling platform is Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and its chemical composition specific gravity is an equimolar ratio; the compressed air is selected as the spraying power, and the above powder and Zn powder are 7:1.
  • the mixing pressure was 4 MPa, the spraying temperature was 300 ° C, and the spraying distance was 3.5 cm.
  • the surface of the steel platform substrate of the offshore platform was sprayed by a dual nozzle feed port aerodynamic device.
  • the anti-corrosion coating material of the offshore drilling platform is Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and its chemical composition specific gravity is an equimolar ratio; the compressed air is selected as the spraying power, and the above powder and Zn powder are 6:1.
  • the mixing pressure was 4 MPa, the spraying temperature was 350 ° C, and the spraying distance was 3.5 cm.
  • the surface of the steel platform substrate of the offshore platform was sprayed by a dual nozzle feed port aerodynamic device.
  • the anti-corrosion coating material of the offshore drilling platform is Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and its chemical composition specific gravity is an equimolar ratio; the compressed air is selected as the spraying power, and the above powder and Zn powder are 7:1.
  • the mixing pressure was 4 MPa, the spraying temperature was 400 ° C, and the spraying distance was 4.5 cm.
  • the surface of the steel platform substrate of the offshore platform was sprayed by a dual nozzle feed port aerodynamic device.
  • the anti-corrosion coating material of the offshore drilling platform is Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and its chemical composition specific gravity is an equimolar ratio; the compressed air is selected as the spraying power, and the above powder and Zn powder are 7:1.
  • the mixing pressure was 4 MPa, the spraying temperature was 450 ° C, and the spraying distance was 4 cm.
  • the surface of the steel platform substrate of the offshore platform was sprayed by a dual nozzle feed port aerodynamic device.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

Disclosed is a method for preparing a corrosion-resistant coating of a marine well drilling platform belonging to the technical field of preparing high-entropy alloy corrosion-resistant coatings. In the method, a double-feeding-port nozzle aerodynamic spraying technology is used to spray an Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder on a steel structure base body of a marine well drilling platform, and at the same time, a cathode protection metal Zn powder is added so as to obtain a coating having stable components and good corrosion resistance. The double-feeding-port nozzle aerodynamic spraying technology is an effective method for preparing an Al-Cr-Fe-Mn-Ni five-component high-entropy alloy corrosion-resistant coating, and the coating is large, dense, and highly corrosion-resistant, etc.

Description

一种海洋钻井平台耐腐涂层制备方法Preparation method of anti-corrosion coating for marine drilling platform 技术领域Technical field
[0001]本发明涉及一种使用与海洋钻井平台的耐腐涂层的制备方法。[0001] The present invention relates to a method of making a corrosion resistant coating using an offshore drilling platform.
背景技术Background technique
海洋钻井平台中的钢结构,长期处于海洋盐雾、海水电离、化学物质的腐蚀环境中。传统的耐腐涂层多为环氧涂料,但是存在附着力、耐海水腐蚀、耐阴极剥落性差,因此,海洋平台每不到一年到两年就需要修理,或者重新涂装,不仅维修费用巨大,而且影响海洋平台的使用。The steel structure in offshore drilling platforms has long been in the corrosive environment of marine salt spray, seawater ionization and chemical substances. The traditional anti-corrosion coatings are mostly epoxy coatings, but they have adhesion, seawater corrosion resistance and poor cathodic resistance. Therefore, the offshore platform needs to be repaired or repainted in less than one to two years, not only the maintenance cost. It is huge and affects the use of offshore platforms.
高熵合金作为一种多组元合金,运用了4种元素以上的等摩尔质量比的设计思想,具有较高混乱程度和超高玻璃化形成能力,因而具有高强度、高硬度,高耐磨性,高耐温性和高耐腐蚀等良好的特性。尤其在耐腐蚀性能方面大大优于不锈钢等钢材。近年来,高熵合金涂层制备方法有激光溶覆、电化学沉积和磁控溅射等几种,这些方法各有优缺点。其中电化学沉积方法形成速度较慢,且受到工件尺寸的限制,适合制备小厚度的涂层;磁控溅射方法制备涂层的效率虽然高,但受设备限制,生产成本较高;激光溶覆方法是近几年来发展起来的新技术,它是通过较高温度热源及较大的过空气动力度将高熵合金粉末溶覆到基体表面,以获得一定厚度及所需性能的高熵合金涂层。这种工艺已相对广泛,但其使用仍然受到局限。由于高熵合金组元的多样性,以及在激光加热过程中的极高过空气动力度影响,导致涂层和基体之间温度梯度过大,在涂层或过度区产生较大热应力,导致裂纹的产生。另外,溶覆过程中产生较多气孔,激光烧结时基体与涂层的结合强度不足,同时从组织形态上来说,激光溶覆组织是一种快速凝固的铸态组织,存在着晶界偏析现象,这些因素会最终影响制备材料的使用性能。As a multi-component alloy, high-entropy alloy uses the design idea of equimolar mass ratio of more than 4 elements, with high chaos and ultra-high glass forming ability, so it has high strength, high hardness and high wear resistance. Good properties such as high temperature, high temperature resistance and high corrosion resistance. Especially in terms of corrosion resistance, it is much better than steel such as stainless steel. In recent years, high-entropy alloy coating preparation methods include laser coating, electrochemical deposition and magnetron sputtering. These methods have their own advantages and disadvantages. Among them, the electrochemical deposition method is slow in formation and limited by the size of the workpiece, and is suitable for preparing coatings with small thickness. The efficiency of the coating prepared by the magnetron sputtering method is high, but it is limited by equipment and the production cost is high; The coating method is a new technology developed in recent years. It is a high-entropy alloy that melts high-entropy alloy powder onto the surface of the substrate through a higher temperature heat source and a larger degree of aerodynamic force to obtain a certain thickness and desired properties. coating. This process has been relatively extensive, but its use is still limited. Due to the diversity of high-entropy alloy components and the extremely high aerodynamics in the laser heating process, the temperature gradient between the coating and the substrate is too large, resulting in large thermal stress in the coating or over-extension, resulting in The generation of cracks. In addition, more pores are generated during the coating process, and the bonding strength between the substrate and the coating is insufficient during laser sintering. At the same time, the laser-coated structure is a rapidly solidified as-cast structure, and there is segregation at the grain boundary. These factors will ultimately affect the performance of the preparation materials.
另外,在进料方面,传统的为单进料口,同时气体加热在喷嘴前段,这就使得热量在到达喷嘴时大的降低,使得粉末的加热效果大大折扣。In addition, in terms of feeding, the conventional one is a single feed port, and the gas is heated in the front section of the nozzle, which causes the heat to be greatly reduced when it reaches the nozzle, so that the heating effect of the powder is greatly discounted.
空气动力喷涂是一种压缩空气驱动金属粒子使得在完全固态下以极高的速度抨 击基材,通过这种剧烈碰撞产生塑性变形而沉积形成涂层的一种新型的喷涂技术。它的优点在于可以消除热喷涂的热应力变形、氧化、晶粒粗大等影响。Aerodynamic spraying is a type of compressed air that drives metal particles so that they are extremely high at full speed. A new type of spraying technique that strikes a substrate and deposits a coating by plastic deformation through such a violent collision. It has the advantage of eliminating the effects of thermal stress deformation, oxidation, and coarse grain of thermal spray.
然而运用空气动力喷涂技术将高熵合金涂层制备在海洋钻井平台等表面提高耐腐性能的做法还未有报道。However, the use of aerodynamic spraying technology to improve the corrosion resistance of high-entropy alloy coatings on surfaces such as offshore drilling platforms has not been reported.
技术问题technical problem
问题的解决方案Problem solution
技术解决方案Technical solution
为了克服上述现有技术存在的缺点,本发明的目的在于提供一种新型的海洋钻井平台防腐涂层的制备方法,运用以Al-Cr-Fe-Mn-Ni五组元高熵合金粉末与Zn粉7∶1混合的粉末为原料,通过双进料孔喷嘴及空气动力喷涂技术在海洋钻井平台钢材基体上制备防腐涂层。In order to overcome the shortcomings of the prior art mentioned above, the object of the present invention is to provide a novel method for preparing an anti-corrosion coating for an offshore drilling platform, which uses a five-component high-entropy alloy powder of Al-Cr-Fe-Mn-Ni and Zn. The powder of 7:1 powder is used as raw material, and the anti-corrosion coating is prepared on the steel substrate of the offshore drilling platform through the double feed nozzle and aerodynamic spraying technology.
为了解决上述问题,本发明采用以下技术方案:In order to solve the above problems, the present invention adopts the following technical solutions:
一种海洋钻井平台防腐涂层的制备方法,该方法是以Al-Cr-Fe-Mn-Ni五组元高熵合金粉末与Zn粉7∶1(质量比)混合的粉末为原料,通过双进料口喷嘴及空气动力喷涂技术在海洋钻井平台钢材基体上制备防腐涂层。The invention discloses a preparation method of an anti-corrosion coating for an offshore drilling platform, which is characterized in that a powder of Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder and Zn powder mixed with a ratio of 7:1 (mass ratio) is used as a raw material. The feed nozzle and aerodynamic spray technology prepare an anti-corrosion coating on the steel substrate of the offshore drilling platform.
所述空气动力喷涂技术制备耐腐涂层的过程中,通过双进料喷嘴,Al-Cr-Fe-Mn-Ni五组元高熵合金粉末与Zn粉末分别从两个进料口,经过加热器加热,使得粉末温度达到300-400℃,喷涂的动力由空气压缩机提供,压力为3-5Mpa,喷涂距离为3-5cm。In the process of preparing the corrosion-resistant coating by the aerodynamic spraying technology, the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder and the Zn powder are heated from the two inlets respectively through the double feed nozzle. The heater is heated so that the powder temperature reaches 300-400 ° C. The power of the spray is provided by an air compressor with a pressure of 3-5 MPa and a spray distance of 3-5 cm.
所述的Al-Cr-Fe-Mn-Ni五组元高熵合金粉末化学成分配比为等摩尔比1∶1∶1∶1∶1。可以避免粉末元素之间形成金属间化合物,这些化合物都是脆性物质,对于防腐,硬度提高都是不好的。同时等摩尔比的设计思想,可以使得五种元素形成高熵固溶体,这种固溶体对于防腐是非常有帮助的。因为高熵固溶体是个非常稳定的结构,不易和其他腐蚀液体发生反应。The chemical composition ratio of the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder is an equimolar ratio of 1:1:1:1:1. It is possible to avoid the formation of intermetallic compounds between the powder elements, which are all brittle substances, which are not good for corrosion protection and hardness improvement. At the same time, the equimolar ratio design idea can make the five elements form a high entropy solid solution, which is very helpful for corrosion protection. Because the high-entropy solid solution is a very stable structure, it is not easy to react with other corrosive liquids.
所述的Al-Cr-Fe-Mn-Ni五组元高熵合金粉末化学成分,其纯度要求为99.9%。The chemical composition of the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder has a purity requirement of 99.9%.
所述的Al-Cr-Fe-Mn-Ni五组元高熵合金粉末的制备过程,将粉末放入玛瑙罐中进行混合,充He气体保护,在机械球磨机中进行球磨,转速360min/s,球磨时间 100h,球料比9∶1,磨后静置3小时,在手套箱中开罐,然后将混合粉末置于真空干燥箱中在100℃下烘干1小时,储存备用。The preparation process of the Al-Cr-Fe-Mn-Ni five-element high-entropy alloy powder is carried out by mixing the powder into an agate tank, being filled with He gas, and being ball-milled in a mechanical ball mill at a speed of 360 min/s. Ball milling time 100h, the ball to material ratio was 9:1, and after standing for 3 hours, the can was opened in a glove box, and then the mixed powder was placed in a vacuum drying oven and dried at 100 ° C for 1 hour, and stored for use.
其中,球磨时间100h,球料比9∶1,选择该时间和球料比的原因为,太长时间或者球料比不合适的话,会使得粉末不易形成高熵固溶体,这种固溶体由于混合熵特别大,因此不易发生反应,对于防腐蚀是非常关键的,因此经过大量实验得到如此参数,这种参数能快速的得到高熵固溶体结构。之后的XRD图谱也印证了这一点,在该参数下形成的为高熵固溶体结构的粉末。Among them, the ball milling time is 100h, and the ball to material ratio is 9:1. The reason for choosing the time and the ball-to-batch ratio is that if the time is too long or the ball-to-batch ratio is not suitable, the powder will not easily form a high-entropy solid solution, and the solid solution is due to the mixing entropy. It is particularly large, so it is not easy to react, and it is very important for corrosion prevention. Therefore, after a large number of experiments, such parameters can be obtained, and this parameter can quickly obtain a high-entropy solid solution structure. This is also confirmed by the subsequent XRD pattern, under which a powder of high entropy solid solution structure is formed.
磨后静置3小时,在手套箱中开罐。其目的在于得到耐腐蚀性极强的Al-Cr-Fe-Mn-Ni五组元高熵合金粉末。After standing for 3 hours, the cans were opened in a glove box. The purpose is to obtain a five-component high-entropy alloy powder of Al-Cr-Fe-Mn-Ni which is extremely resistant to corrosion.
所述的耐腐涂层厚度为10-600um。厚度的控制由喷涂的时间决定。The corrosion-resistant coating has a thickness of 10-600 um. The thickness control is determined by the time of spraying.
所述的基体用150号、600号砂纸分别打磨,去掉油污和氧化皮,漏出金属光泽,以增加界面结合能力。The base body is sanded with 150# and 600# sandpaper respectively to remove the oil stain and scale, and the metal luster is leaked to increase the interface bonding ability.
所述的Zn粉,粒度要求小于20um,纯度要求99.99%。其目的在于Zn做阴极保护,以减少海水的电化学腐蚀。The Zn powder has a particle size requirement of less than 20 um and a purity requirement of 99.99%. Its purpose is to provide cathodic protection for Zn to reduce the electrochemical corrosion of seawater.
一种海洋钻井平台防腐涂层的喷涂装置,包括压缩机和控制系统,其特征在于,还包括与压缩机相通的双进料口喷嘴,所述的双进料口喷嘴整体呈圆台状,在圆台尾端两侧设有两个入料口32,该入料口32与混料腔33相通,所述的混料腔33与在圆台顶端的出料口34联通,其中一个入料口与储料桶I相连,在入料口与储料桶I之间设有进料阀II,另一入料口与储料桶II相连,在入料口与储料桶II之间设有进料阀I;所述的双进料口喷嘴设有螺旋加热器。A spraying device for an anti-corrosion coating of an offshore drilling platform, comprising a compressor and a control system, characterized in that it further comprises a double feed nozzle connected to the compressor, wherein the double feed nozzle is generally in the shape of a truncated cone, There are two inlets 32 on both sides of the tail end of the truncated cone. The inlet port 32 communicates with the mixing chamber 33. The mixing chamber 33 communicates with the discharge port 34 at the top end of the truncated cone. One of the inlets is connected with The storage tank I is connected, and a feed valve II is arranged between the inlet port and the storage tank I, and another inlet port is connected with the storage tank II, and a feed is provided between the inlet port and the storage tank II. The material valve I; the double inlet nozzle is provided with a spiral heater.
本发明设计原理如下:The design principle of the invention is as follows:
基于空气动力喷涂技术,对于高熵合金粉末进行喷涂,喷涂过程温度较低,对高熵合金的高熵固溶体形态影响较小,减少了粉末中的相变,降低了基体材料的变形和内应力。而这种高熵固溶体有着混乱化程度大、组元成分多等特点,使得粉末具有极高的稳定性,涂层的硬度、耐摩性能和耐腐蚀性能极高。Based on aerodynamic spraying technology, the high entropy alloy powder is sprayed, the spraying process temperature is lower, the high entropy alloy has a small influence on the high entropy solid solution morphology, reduces the phase transformation in the powder, and reduces the deformation and internal stress of the matrix material. . The high-entropy solid solution has the characteristics of high degree of chaos and many components, which makes the powder extremely stable, and the hardness, anti-friction performance and corrosion resistance of the coating are extremely high.
同时将高熵合金粉末与Zn粉按一定比例混合后,Zn做为阴极保护金属,对海水电解腐蚀有着更为优良的抗性。At the same time, the high-entropy alloy powder and the Zn powder are mixed in a certain ratio, and Zn is used as a cathodic protection metal, which has more excellent resistance to seawater electrolytic corrosion.
发明的有益效果 Advantageous effects of the invention
有益效果Beneficial effect
[0005]本发明的有益效果在于:[0005] The beneficial effects of the present invention are:
1)本发明为了提高海洋平台的耐海水腐蚀性,采用了稳定性、耐腐性极强的A1-Cr-Fe-Mn-Ni五组元高熵合金粉末,同时加入阴极保护金属Zn粉,使得耐腐蚀性能更为优越。在防腐的初期,由于Zn的存在,在阴极保护理论下,1/8的为防腐的主力,这样可以在相当时间内,让海水先腐蚀Zn粉,当Zn粉被腐蚀殆尽,则高熵合金粉末则成为了防腐蚀的重点,这样由于高熵固溶体的存在,涂层很难和海水发生反应,使得防腐进入了平和腐蚀期。1) In order to improve the seawater corrosion resistance of the offshore platform, the A1-Cr-Fe-Mn-Ni five-component high-entropy alloy powder with high stability and corrosion resistance is used, and the cathodic protection metal Zn powder is added at the same time. The corrosion resistance is superior. In the early stage of anti-corrosion, due to the existence of Zn, under the cathodic protection theory, 1/8 is the main force of anti-corrosion, so that the seawater can be corroded first in a certain period of time, and when the Zn powder is corroded, the high entropy Alloy powder has become the focus of anti-corrosion, so due to the existence of high-entropy solid solution, the coating is difficult to react with seawater, so that the anti-corrosion enters the flat corrosion period.
2)本发明空气动力喷涂Al-Cr-Fe-Mn-Ni五组元高熵合金涂层工艺与现有的高熵合金涂层制备工艺相比不仅厚度可控、致密、基体结合强等特点,同时低温作用下更易保持粉末的高熵固溶体形态,对涂层稳定性、涂层的强度及耐磨性方面有着很大的帮助。结果证明,空气动力喷涂制备Al-Cr-Fe-Mn-Ni五组元高熵合金耐腐涂层是一种非常有效的方法,填补了国内外耐腐涂层制备的空白。2) The aerodynamic sprayed Al-Cr-Fe-Mn-Ni five-element high-entropy alloy coating process of the present invention has the characteristics of controllable thickness, compactness and strong matrix bonding compared with the existing high-entropy alloy coating preparation process. At the same time, it is easier to maintain the high entropy solid solution morphology of the powder under low temperature, which is very helpful for coating stability, coating strength and wear resistance. The results show that aerodynamic spraying to prepare Al-Cr-Fe-Mn-Ni five-component high-entropy alloy anti-corrosion coating is a very effective method, which fills the blank of anti-corrosion coating preparation at home and abroad.
3)本发明首创的双进料孔喷嘴空气动力喷涂技术相比传统空气动力喷涂技术,在设备方面更为紧凑简单,便于运用到各种喷涂场合,适配性得到大大提高。在效果方面粉末在虹吸作用下流入喷嘴混合更为均匀,对喷嘴整体螺旋加热,保证了混合粉末喷出的温度大致恒定在350℃,使得粉末塑性提高,更易与基体结合,最终使得制备的涂层更为致密,结合性能更优。3) The double feed hole nozzle aerodynamic spraying technology pioneered by the invention is more compact and simpler in equipment than the conventional aerodynamic spraying technology, and is convenient to be applied to various spraying occasions, and the adaptability is greatly improved. In terms of effect, the powder flows into the nozzle more uniformly under the action of siphoning, and the whole nozzle is spirally heated to ensure that the temperature of the mixed powder is substantially constant at 350 ° C, so that the plasticity of the powder is improved, and it is easier to combine with the substrate, and finally the prepared coating is finally made. The layer is more dense and the bonding performance is better.
4)该发明的双进料口喷嘴可以加之不同类型的粉末,同时加热螺旋器在喷嘴处,这就使得粉末的活性大大增加。有利于涂层的形成。同时加之双喷嘴的概念,将不同粉末可以同时制备到基体表面。4) The double feed nozzle of the invention can be combined with different types of powder while heating the screw at the nozzle, which greatly increases the activity of the powder. Conducive to the formation of the coating. Together with the concept of a double nozzle, different powders can be prepared simultaneously onto the surface of the substrate.
对附图的简要说明Brief description of the drawing
附图说明DRAWINGS
图1为本发明所用双进料口喷嘴空气动力喷涂装置示意图;Figure 1 is a schematic view of an aerodynamic spraying device for a double inlet nozzle used in the present invention;
图2为本发明海洋平台耐腐涂层的扫描电镜图片;喷涂温度为300℃、喷涂压力为4MPa时涂层的截面形貌;2 is a scanning electron micrograph of the anticorrosive coating of the offshore platform of the present invention; the cross-sectional morphology of the coating when the spraying temperature is 300 ° C and the spraying pressure is 4 MPa;
图3为本发明海洋平台耐腐涂层的扫描电镜图片;喷涂温度为350℃、喷涂压力为4MPa时涂层的截面形貌; 3 is a scanning electron micrograph of the anticorrosive coating of the marine platform of the present invention; the cross-sectional morphology of the coating when the spraying temperature is 350 ° C and the spraying pressure is 4 MPa;
图4为本发明海洋平台耐腐涂层的扫描电镜图片;喷涂温度为400℃、喷涂压力为4MPa时涂层的截面形貌;4 is a scanning electron micrograph of the anti-corrosion coating of the offshore platform of the present invention; the cross-sectional morphology of the coating when the spraying temperature is 400 ° C and the spraying pressure is 4 MPa;
图5为本发明海洋平台耐腐涂层的扫描电镜图片;喷涂温度为450℃、喷涂压力为4MPa时涂层的截面形貌。从图看出(d)参数下涂层致密,结合紧密,为最优的技术参数。Fig. 5 is a scanning electron micrograph of the anticorrosive coating of the offshore platform of the present invention; the cross-sectional morphology of the coating is sprayed at a temperature of 450 ° C and a spray pressure of 4 MPa. It can be seen from the figure that the coating under the parameters (d) is dense and tightly combined, which is the optimal technical parameter.
图6为本发明海洋平台耐腐涂层的X射线衍射图谱,从图看出涂层为体心立方结构的高熵合金结构。Fig. 6 is an X-ray diffraction spectrum of the corrosion resistant coating of the offshore platform of the present invention, and the high-entropy alloy structure of the coating is a body-centered cubic structure.
图7为双进料口喷嘴的结构示意图。Figure 7 is a schematic view showing the structure of a double feed nozzle.
图8为现有技术涂层的扫描电镜图片;Figure 8 is a scanning electron micrograph of a prior art coating;
图9为现有技术涂层的扫描电镜图片;Figure 9 is a scanning electron micrograph of a prior art coating;
图10为现有技术涂层的扫描电镜图片。Figure 10 is a scanning electron micrograph of a prior art coating.
图中:1-控制系统,2-储料桶,21-储料桶I,22-储料桶II,23-进料阀I,24-进料阀II,3-双进料口喷嘴,31-加热器,32-入料口,33-混料腔,34-出料口,4-压缩机。In the figure: 1-control system, 2- storage tank, 21-reservoir I, 22-reservoir II, 23-feed valve I, 24-feed valve II, 3-double inlet nozzle, 31-heater, 32-inlet, 33-mixing chamber, 34-outlet, 4-compressor.
发明实施例Invention embodiment
具体实施方式detailed description
下面结合附图及实施例详述本发明。The invention will be described in detail below with reference to the accompanying drawings and embodiments.
一种海洋钻井平台防腐涂层用的喷涂装置,包括压缩机4和控制系统1,还包括与压缩机1相通的双进料口喷嘴3,所述的双进料口喷嘴3整体呈圆台状,在圆台尾端两侧设有两个入料口32,该入料口32与混料腔33相通,所述的混料腔33与在圆台顶端的出料口34联通,其中一个入料口32与储料桶I21相连,在入料口32与储料桶I21之间设有进料阀II24,另一入料口32与储料桶II22相连,在入料口32与储料桶II22之间设有进料阀I23;所述的双进料口喷嘴3设有螺旋加热器。32A spraying device for anticorrosive coating of an offshore drilling platform, comprising a compressor 4 and a control system 1, further comprising a double inlet nozzle 3 communicating with the compressor 1, the double inlet nozzle 3 being generally in the shape of a truncated cone Two inlet ports 32 are provided on both sides of the tail end of the trough, and the inlet port 32 communicates with the mixing chamber 33, and the mixing chamber 33 communicates with the discharge port 34 at the top end of the truncated cone, one of which is fed The port 32 is connected to the storage tank I21, and a feed valve II24 is arranged between the inlet port 32 and the storage tank I21, and another inlet port 32 is connected with the storage barrel II22 at the inlet port 32 and the storage barrel. A feed valve I23 is provided between II22; the double feed nozzle 3 is provided with a spiral heater. 32
如图1所示,将Al-Cr-Fe-Mn-Ni五组元高熵合金粉末放在储料桶I21和Zn粉末放在储料桶II22,通过调节进料阀I23和进料阀II24,调节Al-Cr-Fe-Mn-Ni五组元高熵合金粉末与Zn粉进料质量比例为7∶1。打开压缩机4,使得气压进入双进料口喷嘴3混合,双进料喷嘴自带加热器31,用于对粉末进行加热。As shown in Fig. 1, the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder is placed in the storage tank I21 and the Zn powder is placed in the storage tank II22, and the feed valve I23 and the feed valve II24 are adjusted. The Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder and the Zn powder feed mass ratio are adjusted to 7:1. The compressor 4 is turned on so that the air pressure enters the double feed port nozzle 3, and the double feed nozzle carries the heater 31 for heating the powder.
所述的双进料口喷嘴整体呈圆台状,在圆台尾端两侧设有两个入料口32,该入 料口32与混料腔33相通,所述的混料腔33与在圆台顶端的出料口34联通。The double feed nozzle has a truncated cone shape as a whole, and two inlet ports 32 are provided on both sides of the tail end of the truncated cone. The spout 32 communicates with the mixing chamber 33, and the mixing chamber 33 communicates with the discharge port 34 at the top end of the truncated cone.
本发明中,喷涂原料为自制Al-Cr-Fe-Mn-Ni五组元高熵合金粉末,喷涂的基材为海洋平台钢结构。具体工艺参数如下:化学成分配比为等摩尔比1∶1∶1∶1∶1;纯度要求为99.9%;将粉末放入玛瑙罐中进行混合,充He气体保护,在机械球磨机中进行球磨,转速360min/s,球磨时间100h,球料比9∶1,球磨后静置3小时,在手套箱中开罐,然后将混合粉末置于真空干燥箱中在100℃下烘干1小时,储存备用。In the invention, the spraying raw material is a self-made Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and the sprayed substrate is a marine platform steel structure. The specific process parameters are as follows: the chemical composition distribution ratio is an equimolar ratio of 1:1:1:1:1; the purity requirement is 99.9%; the powder is placed in an agate tank for mixing, He gas protection, ball milling in a mechanical ball mill , the speed is 360min/s, the ball milling time is 100h, the ball ratio is 9:1, the ball is allowed to stand for 3 hours, the can is opened in the glove box, and then the mixed powder is placed in a vacuum drying oven and dried at 100 ° C for 1 hour. Store for backup.
本发明中,上述喷涂装置的具体参数如下:粉末加热温度300-400℃,喷涂距离3-5cm,喷涂压力为3-5MPa。喷涂前,基体用150号、600号砂纸分别打磨,去掉油污和氧化皮,漏出金属光泽,以增加界面结合能力。In the present invention, the specific parameters of the above spraying device are as follows: the powder heating temperature is 300-400 ° C, the spraying distance is 3-5 cm, and the spraying pressure is 3-5 MPa. Before spraying, the base body is sanded with 150# and 600# sandpaper respectively to remove the oil stain and scale, and the metal luster is leaked to increase the interface bonding ability.
实施例1Example 1
海洋钻井平台防腐涂层原料为Al-Cr-Fe-Mn-Ni五组元高熵合金粉末,其化学成分比重为等摩尔比;选择压缩空气作为喷涂动力,上述粉末与Zn粉末进行7∶1混合,喷涂压力为4MPa,喷涂温度为300℃,喷涂距离3.5cm,采用双喷嘴进料口空气动力装置在海洋平台钢结构基体表面进行喷涂。The anti-corrosion coating material of the offshore drilling platform is Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and its chemical composition specific gravity is an equimolar ratio; the compressed air is selected as the spraying power, and the above powder and Zn powder are 7:1. The mixing pressure was 4 MPa, the spraying temperature was 300 ° C, and the spraying distance was 3.5 cm. The surface of the steel platform substrate of the offshore platform was sprayed by a dual nozzle feed port aerodynamic device.
实施例2Example 2
海洋钻井平台防腐涂层原料为Al-Cr-Fe-Mn-Ni五组元高熵合金粉末,其化学成分比重为等摩尔比;选择压缩空气作为喷涂动力,上述粉末与Zn粉末进行6∶1混合,喷涂压力为4MPa,喷涂温度为350℃,喷涂距离3.5cm,采用双喷嘴进料口空气动力装置在海洋平台钢结构基体表面进行喷涂。The anti-corrosion coating material of the offshore drilling platform is Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and its chemical composition specific gravity is an equimolar ratio; the compressed air is selected as the spraying power, and the above powder and Zn powder are 6:1. The mixing pressure was 4 MPa, the spraying temperature was 350 ° C, and the spraying distance was 3.5 cm. The surface of the steel platform substrate of the offshore platform was sprayed by a dual nozzle feed port aerodynamic device.
实施例3Example 3
海洋钻井平台防腐涂层原料为Al-Cr-Fe-Mn-Ni五组元高熵合金粉末,其化学成分比重为等摩尔比;选择压缩空气作为喷涂动力,上述粉末与Zn粉末进行7∶1混合,喷涂压力为4MPa,喷涂温度为400℃,喷涂距离4.5cm,采用双喷嘴进料口空气动力装置在海洋平台钢结构基体表面进行喷涂。The anti-corrosion coating material of the offshore drilling platform is Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and its chemical composition specific gravity is an equimolar ratio; the compressed air is selected as the spraying power, and the above powder and Zn powder are 7:1. The mixing pressure was 4 MPa, the spraying temperature was 400 ° C, and the spraying distance was 4.5 cm. The surface of the steel platform substrate of the offshore platform was sprayed by a dual nozzle feed port aerodynamic device.
实施例4Example 4
海洋钻井平台防腐涂层原料为Al-Cr-Fe-Mn-Ni五组元高熵合金粉末,其化学成分比重为等摩尔比;选择压缩空气作为喷涂动力,上述粉末与Zn粉末进行7∶1 混合,喷涂压力为4MPa,喷涂温度为450℃,喷涂距离4cm,采用双喷嘴进料口空气动力装置在海洋平台钢结构基体表面进行喷涂。 The anti-corrosion coating material of the offshore drilling platform is Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder, and its chemical composition specific gravity is an equimolar ratio; the compressed air is selected as the spraying power, and the above powder and Zn powder are 7:1. The mixing pressure was 4 MPa, the spraying temperature was 450 ° C, and the spraying distance was 4 cm. The surface of the steel platform substrate of the offshore platform was sprayed by a dual nozzle feed port aerodynamic device.

Claims (9)

  1. 一种海洋钻井平台防腐涂层的制备方法,其特征在于:该方法是以Al-Cr-Fe-Mn-Ni五组元高熵合金粉末与Zn粉7∶1混合的粉末为原料,通过双进料孔喷嘴及空气动力喷涂技术在海洋钻井平台钢材基体上制备防腐涂层。The invention discloses a preparation method of an anti-corrosion coating for an offshore drilling platform, which is characterized in that: the method uses a powder of Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder and Zn powder mixed with 7:1 as a raw material, through double The feed hole nozzle and aerodynamic spray technology prepare an anticorrosive coating on the steel substrate of the offshore drilling platform.
  2. 根据权利要求1所述的制备海洋钻井平台耐腐涂层的方法,其特征在于:采用空气动力喷涂技术制备耐腐涂层的过程中,通过双进料喷嘴,Al-Cr-Fe-Mn-Ni五组元高熵合金粉末与Zn粉末分别从两个进料口,经过加热器加热,使得粉末温度达到300-400℃,喷涂的动力由空气压缩机提供,压力为4Mpa,喷涂距离为3-5cm。The method for preparing an anti-corrosion coating for an offshore drilling platform according to claim 1, characterized in that: in the process of preparing a corrosion-resistant coating by aerodynamic spraying technology, a double feed nozzle, Al-Cr-Fe-Mn- The Ni five-component high-entropy alloy powder and Zn powder are heated from the two feed ports through the heater, so that the powder temperature reaches 300-400 ° C. The power of the spray is provided by the air compressor, the pressure is 4 Mpa, and the spray distance is 3. -5cm.
  3. 根据权利要求1所述的制备海洋钻井平台耐腐涂层的方法,其特征在于:所述的Al-Cr-Fe-Mn-Ni五组元高熵合金粉末化学成分配比为等摩尔比1∶1∶1∶1∶1。The method for preparing a corrosion resistant coating for an offshore drilling platform according to claim 1, wherein the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder has a chemical composition ratio of equimolar ratio 1 : 1: 1: 1:1.
  4. 根据权利要求1所述的制备海洋钻井平台耐腐涂层的方法,其特征在于:所述的Al-Cr-Fe-Mn-Ni五组元高熵合金粉末化学成分,其纯度要求为99.9%。The method for preparing a corrosion resistant coating for an offshore drilling platform according to claim 1, wherein the chemical composition of the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder has a purity requirement of 99.9%. .
  5. 根据权利要求1所述的制备海洋钻井平台耐腐涂层的方法,其特征在于:所述的Al-Cr-Fe-Mn-Ni五组元高熵合金粉末的制备过程,将权利要求3中所述的粉末放入玛瑙罐中进行混合,充He气体保护,在机械球磨机中进行球磨,转速360min/s,球磨时间100h,球料比9∶1,球磨后静置3小时,在手套箱中开罐,然后将混合粉末置于真空干燥箱中在100℃下烘干1小时,储存备用。The method for preparing a corrosion resistant coating for an offshore drilling platform according to claim 1, wherein the preparation process of the Al-Cr-Fe-Mn-Ni five-component high-entropy alloy powder is as claimed in claim 3. The powder is placed in an agate tank for mixing, gas-filled, ball milled in a mechanical ball mill, rotating at 360 min/s, ball milling time 100 h, ball-to-batch ratio 9:1, ball milled and allowed to stand for 3 hours, in a glove box The can was opened in a can, and the mixed powder was placed in a vacuum drying oven and dried at 100 ° C for 1 hour, and stored for use.
  6. 根据权利要求1所述的制备海洋钻井平台耐腐涂层的方法,其特征在于:所述的耐腐涂层厚度为10-600um。The method of preparing an anti-corrosion coating for an offshore drilling platform according to claim 1, wherein the corrosion-resistant coating has a thickness of 10-600 um.
  7. 根据权利要求1所述的制备海洋钻井平台耐腐涂层的方法,其特征在于:所述的基体用150号、600号砂纸分别打磨,去掉油污和氧化皮,漏出金属光泽,以增加界面结合能力。The method for preparing an anti-corrosion coating for an offshore drilling platform according to claim 1, wherein the base body is sanded with 150# and 600 grit sandpaper respectively to remove oil stains and scale, and to leak metallic luster to increase interface bonding. ability.
  8. 根据权利要求1所述的制备海洋钻井平台耐腐涂层的方法,其特征 在于:所述的Zn粉,粒度要求小于20um,纯度要求99.99%。A method of preparing a marine drilling platform corrosion resistant coating according to claim 1 It is: the Zn powder has a particle size requirement of less than 20 um and a purity requirement of 99.99%.
  9. 一种权利要求1所述的海洋钻井平台防腐涂层用的喷涂装置,包括压缩机和控制系统,其特征在于,还包括与压缩机相通的双进料口喷嘴,所述的双进料口喷嘴整体呈圆台状,在圆台尾端两侧设有两个入料口32,该入料口32与混料腔33相通,所述的混料腔33与在圆台顶端的出料口34联通,其中一个入料口与储料桶I相连,在入料口与储料桶I之间设有进料阀II,另一入料口与储料桶II相连,在入料口与储料桶II之间设有进料阀I;所述的双进料口喷嘴设有螺旋加热器。 A spraying apparatus for an anti-corrosion coating for an offshore drilling platform according to claim 1, comprising a compressor and a control system, further comprising a double inlet nozzle communicating with the compressor, said double inlet The nozzle is generally in the shape of a truncated cone. Two inlet ports 32 are provided on both sides of the tail end of the trough. The inlet port 32 communicates with the mixing chamber 33, and the mixing chamber 33 communicates with the discharge port 34 at the top end of the truncated cone. One of the inlets is connected to the storage tank I, and a feed valve II is arranged between the inlet and the storage tank I, and another inlet is connected to the storage tank II, at the inlet and the storage A feed valve I is provided between the barrels II; the double inlet nozzle is provided with a spiral heater.
PCT/CN2015/096791 2015-12-04 2015-12-09 Method for preparing corrosion-resistant coating of marine well drilling platform WO2017092065A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510878422.3 2015-12-04
CN201510878422.3A CN105463443B (en) 2015-12-04 2015-12-04 A kind of marine drilling platform corrosion resistant coating production

Publications (1)

Publication Number Publication Date
WO2017092065A1 true WO2017092065A1 (en) 2017-06-08

Family

ID=55601592

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/096791 WO2017092065A1 (en) 2015-12-04 2015-12-09 Method for preparing corrosion-resistant coating of marine well drilling platform

Country Status (2)

Country Link
CN (1) CN105463443B (en)
WO (1) WO2017092065A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112575327A (en) * 2020-12-08 2021-03-30 镇江四联机电科技有限公司 High-hardness and high-wear-resistance composite coating applied to surface of valve body, preparation method and valve body
CN114318208A (en) * 2022-01-07 2022-04-12 中国科学院合肥物质科学研究院 Composite coating for lead-based reactor pump impeller and preparation method thereof
CN115010190A (en) * 2022-06-22 2022-09-06 北京理工大学重庆创新中心 High-entropy oxide cathode material and preparation method and application thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110270446A (en) * 2019-06-21 2019-09-24 山西誉邦科技股份有限公司 A kind of fast reaction spray equipment blocked for transporting coal railway carriage
CN111118464B (en) * 2019-12-30 2021-01-12 四川大学 Preparation method and application of nanocrystalline high-entropy oxide film

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020129767A1 (en) * 2001-03-15 2002-09-19 Lloyd Czerwonka Temperature controlled coating system
DE10137711A1 (en) * 2001-08-05 2003-02-13 Peter Kueppers Method for coating surfaces with a multicomponent mixture of plastic materials involves heating to produce degassing temperatures, cooling to ensure a presence of liquid phases, and reheating to lower viscosities
CN1603008A (en) * 2003-04-30 2005-04-06 中国科学院金属研究所 Pneumatic powder spraying apparatus
CN1730727A (en) * 2005-01-31 2006-02-08 天津市先知邦钢铁防腐工程有限公司 Nanometer composite powder zinc impregnation processing method
CN101386928A (en) * 2008-10-24 2009-03-18 昆明理工大学 Method for preparing high-entropy alloy containing immiscible element
CN203437237U (en) * 2013-09-02 2014-02-19 朱蕾 Double-component feeding and plating device
CN104141084A (en) * 2013-10-10 2014-11-12 天津大学 Preparation method of laser cladding high-entropy alloy powder and cladding layer and application
EP2826510A1 (en) * 2013-07-19 2015-01-21 Drom Fragrances GmbH & Co. KG Volatile substance diffusing device and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020159914A1 (en) * 2000-11-07 2002-10-31 Jien-Wei Yeh High-entropy multielement alloys
JP4190720B2 (en) * 2000-11-29 2008-12-03 國立清華大學 Multi-component alloy
CN101418427A (en) * 2008-12-11 2009-04-29 浙江大学 Fe-Mn-Cr-Al arc spraying cored wire for preventing high temperature oxidation and corrosion
CN201728173U (en) * 2010-06-29 2011-02-02 新兴铸管股份有限公司 Double-component spraying system
CN104141127B (en) * 2013-10-10 2017-02-08 天津大学 Preparation method of high-entropy alloy powder and cladding layer and application
CN104561878A (en) * 2013-10-29 2015-04-29 比亚迪股份有限公司 High-entropy alloy powder for spray coating and preparation method thereof, as well as composite material and preparation method thereof
CN105088048B (en) * 2015-09-06 2017-07-18 北京科技大学 A kind of high-entropy alloy degraded for sewage and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020129767A1 (en) * 2001-03-15 2002-09-19 Lloyd Czerwonka Temperature controlled coating system
DE10137711A1 (en) * 2001-08-05 2003-02-13 Peter Kueppers Method for coating surfaces with a multicomponent mixture of plastic materials involves heating to produce degassing temperatures, cooling to ensure a presence of liquid phases, and reheating to lower viscosities
CN1603008A (en) * 2003-04-30 2005-04-06 中国科学院金属研究所 Pneumatic powder spraying apparatus
CN1730727A (en) * 2005-01-31 2006-02-08 天津市先知邦钢铁防腐工程有限公司 Nanometer composite powder zinc impregnation processing method
CN101386928A (en) * 2008-10-24 2009-03-18 昆明理工大学 Method for preparing high-entropy alloy containing immiscible element
EP2826510A1 (en) * 2013-07-19 2015-01-21 Drom Fragrances GmbH & Co. KG Volatile substance diffusing device and method
CN203437237U (en) * 2013-09-02 2014-02-19 朱蕾 Double-component feeding and plating device
CN104141084A (en) * 2013-10-10 2014-11-12 天津大学 Preparation method of laser cladding high-entropy alloy powder and cladding layer and application

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112575327A (en) * 2020-12-08 2021-03-30 镇江四联机电科技有限公司 High-hardness and high-wear-resistance composite coating applied to surface of valve body, preparation method and valve body
CN114318208A (en) * 2022-01-07 2022-04-12 中国科学院合肥物质科学研究院 Composite coating for lead-based reactor pump impeller and preparation method thereof
CN114318208B (en) * 2022-01-07 2023-12-08 中国科学院合肥物质科学研究院 Composite coating for lead-based reactor pump impeller and preparation method thereof
CN115010190A (en) * 2022-06-22 2022-09-06 北京理工大学重庆创新中心 High-entropy oxide cathode material and preparation method and application thereof
CN115010190B (en) * 2022-06-22 2023-12-22 北京理工大学重庆创新中心 High-entropy oxide positive electrode material and preparation method and application thereof

Also Published As

Publication number Publication date
CN105463443B (en) 2018-06-12
CN105463443A (en) 2016-04-06

Similar Documents

Publication Publication Date Title
WO2017092065A1 (en) Method for preparing corrosion-resistant coating of marine well drilling platform
CN105648296B (en) A kind of high temperature resistance tungsten carbide-base metal-ceramic composite powder end, coating and its preparation process containing Re
CN103184400A (en) Nano-ceramic composite spraying powder and preparation method for same
CN101648273B (en) Method for preparing zinc-nickel alloy powder and application thereof
CN103484814A (en) Preparation method of titanium boride based inorganic composite coating
CN103614687A (en) Preparation technique of continuous casting crystallizer copper plate surface cermet coating
CN114226722A (en) Corrosion-resistant material, corrosion-resistant layer produced therefrom and cookware comprising a corrosion-resistant layer
CN108893696B (en) High-erosion-resistance and anti-cracking nano carbide reinforced tungsten carbide-based composite powder, coating and preparation method thereof
CN110396687A (en) A kind of Ti2AlC MAX phase ceramics coating and its cold spraying preparation method
CN104152891A (en) Method for rapidly forming metallurgical alloy layer on magnesium alloy surface
CN110453171B (en) Amorphous coating, substrate with amorphous coating and preparation process of substrate
CN108893695A (en) The nano-carbide enhancing tungsten carbide-base composite powder of anti-cavitation Anti-erosion a kind of, coating and preparation method thereof
CN101294284A (en) Ablation-resistant fatigue-resistant plasma surface recombination reinforcing method
CN107630184A (en) A kind of method for preparing niobium silicide coating in niobium or niobium alloy surface
CN104446397B (en) A kind of hard alloy sub-micron crystal ceramic coating and preparation method
CN102102203A (en) Preparation method of corrosion resistant FeAl intermetallic compound-based composite structure coating
CN110144559A (en) A kind of metal surface protection layer and preparation method thereof
CN108587261A (en) A kind of novel fan part environment friendly inorganic erosion shield and spraying method
CN109182946B (en) Composition of wear-resistant, corrosion-resistant and medium-high temperature-resistant coating for hydraulic hoist piston rod, coating and preparation method of coating
CN112157269A (en) Preparation method of cold spray coating based on heat treatment of aluminum alloy powder
CN104018108A (en) Steel surface modification treatment method for ocean platform
CN101566077A (en) Last stage vane of steam turbine and preparation method thereof
CN111485191A (en) Composite coating powder for plasma spraying, preparation method and application thereof, amorphous composite coating and preparation method thereof
CN114309616B (en) Corrosion-resistant material, method for producing the same, and corrosion-resistant coating formed therefrom
CN105130466A (en) Ceramic composite material for thermal spraying on metal surface and preparation and application method thereof

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15909579

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15909579

Country of ref document: EP

Kind code of ref document: A1