98 results about "Marine corrosion" patented technology

The invention relates to the field of laser detection, in particular to a sample mechanism for marine corrosion primary process detection, which comprises a sample box, a sample loading device for placing a sample plate is arranged in the sample box, and one side of the sample box is provided with an excitation interface and a detection interface. The upper portion of the communication port is connected with a three-way connector, the other two connectors of the three-way connector are used for air exhaust and water dripping respectively, the connector for air exhaust is connected with a vacuumizing pump, and the connector for water dripping is matched with a plugging cover. And the water dripping joint is connected with a water dripping pipe matched with a sample plate on the sample loading device. The communicating port is matched with the three-way joint, so that the vacuumizing operation can be completed through the communicating port, and meanwhile, the dripping operation can also be completed, so that the sample plate simulates a sample environment in which seawater is immersed, and a more accurate detection effect can be obtained.

The invention provides a marine environment steel structure coating anticorrosion performance test analysis method, which comprises: presetting marine environment data and coating information data under different conditions, adopting an accelerated corrosion test to test steel structure coating samples under different conditions, and collecting coating performance time sequence change data under different test conditions; processing the coating performance time sequence change data under different test conditions, determining a coating performance effective time point, extracting and calibrating time sequence characteristic information from the coating performance to the effective time point, and establishing a sample training data set; constructing an anti-corrosion performance analysis model, inputting the sample training data set into the model for training, and outputting the residual life of the coating; the marine corrosion process is accelerated and simulated through multi-dimensional environmental parameter presetting and orthogonal test design, and the residual life of the coating is accurately predicted by combining a collaborative test of electrochemistry, mechanics and microtopography and constructing an anti-corrosion performance analysis model, so that subsequent coating maintenance and management are facilitated.

The invention relates to a method for detecting a marine corrosion primary process, which comprises the following steps of: constructing three vacuum chambers and connecting the three vacuum chambers by using vacuum pipelines to form a detection system; ultrafast femtosecond laser with the repetition frequency being 1 kHz, the single pulse energy being 6 mJ, the pulse width being 35 fs and the central wavelength being 800 nm is generated through a pulse amplifier; one beam of 2mJ enters a vacuum chamber pipeline to be transmitted as a pulse light beam for detection in the original process of ocean corrosion, the other beam of 4mJ is transmitted outside the vacuum chamber to be used as a pump pulse light beam, and 400 nm pump pulse laser is generated through frequency doubling of a BBO crystal; the pump light beam and the detection light beam are incident on a sample of a sample mechanism in the third vacuum chamber, then the pump light beam is blocked, and only the detection light beam is incident on the sample; xUV light beams reflected from the sample are subjected to spectral dispersion and then enter a CCD detector, and the dynamic response of the sample after being excited by the pump light is monitored by measuring the transmissivity, reflectivity or absorption change of the surface of the sample.

The invention relates to the technical field of functional coatings, in particular to a graphene reinforced heavy-duty epoxy coating for a marine environment. The invention discloses a graphene-based epoxy resin coating which is prepared from the following raw materials in parts by weight: 60-80 parts of bisphenol A epoxy resin, 5-10 parts of aminated graphene-carbon nanotube composite powder, 3-6 parts of zinc-aluminum-cerium ternary composite phosphate, 3-6 parts of nano boron nitride / silicon dioxide core-shell particles, 15-25 parts of a polyamide-epoxy curing agent, 1-3 parts of a silane coupling agent KH-560 and 5-8 parts of cashew nut shell oil modified phenolic aldehyde amine. The anti-rust paint is prepared from the following components in parts by weight: 0.5-2 parts of carboxylated graphene quantum dots, 2-4 parts of organic montmorillonite, 0.1-0.5 part of a fluorocarbon surfactant, 8-15 parts of a composite anti-rust pigment and 10-20 parts of an organic solvent. The coating is excellent in corrosion resistance, capable of resisting marine corrosion for a long time, resistant to high temperature and resistant to cathodic disbonding, has the functions of aging tracing and biological adhesion resistance, is convenient to construct and stable in performance, and provides reliable protection for ocean engineering.

The application belongs to the technical field of functional coating materials, and particularly relates to a kind of super-hydrophobic solution based on fumed silica and its preparation method and application, comprising: step one, 20-200nm fumed silica nanoparticles are dispersed in ethanol / water mixed system, and sodium dodecyl benzene sulfonate is added to prevent agglomeration;Step two, under the catalysis of ammonia, tetraethyl orthosilicate and 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane are added dropwise in sequence for fluorination modification;Step three, fluorinated silica nanoparticle suspension is prepared by ultrasonic-assisted reaction;Step four, the solution is sprayed onto the surface of ceramic substrate with micro-nano structure to form a coating;Step five, strong adhesion without adhesive is realized by mechanical anchoring effect.The application realizes super-hydrophobic performance of 153±0.5° high water contact angle and physical adhesion stability under 100-200g load by the synergistic effect of nanoparticle size effect and substrate surface topological structure, low surface energy of fluorinated alkyl chain and Cassie-Baxter air cushion layer effect, and is especially suitable for self-cleaning surface, anti-icing coating and marine corrosion prevention field.

The invention discloses an experimental device for simulating thread friction wear in a marine environment, and relates to the technical field of friction wear experimental equipment, the experimental device comprises an experimental main body, and the experimental main body comprises an experimental upper cover and an experimental cylinder; a motor assembly is fixed on the experiment upper cover, the motor assembly comprises a driving motor, an output shaft of the driving motor is fixedly provided with an upper rotating sleeve, the upper rotating sleeve is internally connected with a male thread test piece through an upper guide rod, two ends of the upper guide rod are slidably connected into the vertical sliding grooves in the two sides respectively, and a spiral spring is arranged at the lower end of the experiment upper cover; a hydraulic system is fixed at the lower end of the experiment barrel and comprises a hydraulic motor, a lower rotating sleeve is fixed on an output shaft of the hydraulic motor, and a female thread test piece is connected into the lower rotating sleeve through a lower connecting pin; the motor assembly and the hydraulic system are both electrically connected with the controller. The device can accurately simulate thread friction wear in a marine corrosion environment, and has the advantages of compact structure, convenience in control and the like.

The application discloses a kind of concrete crack self-repairing agent suitable for marine corrosion conditions, including component one and component two;The component one, component two are all core-shell structure;The outer shell of component one is polymer film;Inner layer includes the following components by mass percentage: 20%-30% barite powder, 50%-60% magnesium source, 20%-30% cement;The outer shell of component two is polymer film;Inner layer includes the following components by mass percentage: 20-30% barite powder, 5-10% microbial powder, 20-30% glucose, 20%-40% aluminum source, 10%-30% low-alkali cement.The repairing agent of the application is continuous grading solid particle pellet, and the fine aggregate of concrete is replaced with equal mass.By the synergistic effect of microbial mineralization and metal mineral hydration, the filling of concrete crack space and the solidification of invasive crack corrosion ions are realized, especially suitable for marine corrosion environment.

The invention discloses a titanium-steel composite plate structure for ocean engineering and a preparation method of the titanium-steel composite plate structure, and belongs to the technical field of ocean engineering materials.The composite plate comprises a titanium plate, a steel sheet and a gradient functional layer arranged between the titanium plate and the steel sheet, and the gradient functional layer is composed of a titanium side MOF enrichment layer, a component gradual change transition layer and a steel side enhancement layer; the surface of a titanium plate is subjected to nanoscale rough oxidation treatment, a nano-pillar array structure is constructed on the surface of a steel sheet, high-strength combination of a heterogeneous metal interface and collaborative improvement of marine corrosion resistance are achieved, and a gradient coating technology of electrostatic spraying, aerosol spraying and slit coating is adopted in the preparation process; and the titanium-steel composite plate for ocean engineering is prepared by matching vacuum hot-pressing bonding and cooling technologies.

The invention belongs to the technical field of marine corrosion protection, and particularly relates to a multi-metal flushing corrosion inhibitor and a preparation method thereof, benzotriazole and isocyanate propyl triethoxy silane or isocyanate propyl trimethoxy silane are used as raw materials, and a novel benzotriazole corrosion inhibitor containing a silane structure is synthesized through catalysis. The benzotriazole containing the silane structure is compounded with corrosion inhibitors such as organic acid salt, organic acid polymer and organosilane to form the multi-metal flushing corrosion inhibitor for steel, aluminum alloy and copper, which does not contain nitrite, phosphate and heavy metals (lead, cadmium and mercury). When in use, the corrosion inhibitor is diluted to 0.2-0.5%, the corrosion inhibitor is applied to flushing protection of offshore drilling platforms, marine investigation equipment and coastal facilities through flushing and spraying processes, a corrosion inhibitor protective film is formed on the basis of removing a surface salt film, corrosion of multiple metals such as steel, aluminum alloy and copper alloy in a marine atmospheric environment is effectively inhibited, and the corrosion inhibitor has good environmental friendliness.

The invention provides an experimental device for simulating an indoor accelerated test of a marine environment, and belongs to the technical field of corrosion of marine engineering equipment. The device comprises a shell, a seawater flowing module, a clamping device, an ultraviolet illumination device, a salt mist device, a monitoring module and a control system, can truly simulate the marine corrosion environment of marine device operation, and can perform tests on the marine corrosion environments of different corrosion areas such as an atmospheric area, a spray splashing tidal area and a total immersion area in the same time and space. And in the same space environment, experimental errors caused by different experimental devices or misoperation can be avoided, and the authenticity and reliability of experimental results are improved.

The invention discloses an antibacterial peptide induced by sulfate reducing bacteria and application of the antibacterial peptide, and belongs to the technical field of marine corrosion protection. The amino acid sequence of the SRB-induced antibacterial peptide is VAHKRLVVGTR, and the SRB-induced antibacterial peptide has efficient antibacterial activity on corrosive bacteria such as SRB and has the advantages of being environmentally friendly and not prone to inducing the bacteria to generate drug resistance, and the problems that an existing antibacterial peptide is insufficient in corrosive bacteria specificity, poor in environmental stability and the like are solved; meanwhile, peptide chains are short, synthesis is easy, and the production cost is low; the compound corrosion inhibition bactericide formed by combining the compound with a chemical bactericide can significantly improve the antibacterial and antiseptic effects, saves the dosage of the chemical bactericide, effectively solves the problems of bacterial drug resistance, high cost, environmental pollution and other pain points caused by abuse of the existing bactericide, and is suitable for the fields of marine microbial corrosion protection and the like.

The invention belongs to the technical field of marine corrosion and protection, and discloses an antibacterial peptide for marine corrosion prevention and fouling prevention and application of the antibacterial peptide, the sequence of the antibacterial peptide is H-NIle-NVal-NLys-NLU-NPhe-NLU-NTyr-NArg-NSer-NTrp-NLU-NHis-NLU-NLU-NIle-NH2, the antibacterial and preservative effects of common corrosion inhibition bactericides such as quaternary ammonium salts, organic guanidines and aldehydes can be effectively enhanced, and the antibacterial peptide can be applied to marine corrosion prevention and fouling prevention. The generation of a corrosive biological membrane and the microbial corrosion rate can be effectively inhibited, the dosage of a bactericide can be reduced by 60% or above, and continuous antibacterial and anticorrosion for 30 days can be realized.

The present invention belongs to the technical field of marine corrosion monitoring, and particularly relates to a real-time marine corrosion monitoring method, system, terminal and storage medium, including: obtaining real-time original data based on sensing devices arranged on marine structures, where the original data includes electrochemical data, environmental data, physical state data and corrosion state data; mapping the original data to a high-dimensional space based on a kernel function, and obtaining the enhanced features most relevant to the corrosion state in the original data mapped to the high-dimensional space based on an attention mechanism; establishing an LSTM model based on the time-dependent relationship of the corrosion state, inputting the enhanced features into the LSTM model, and outputting local time series features; performing weighted fusion on the enhanced features and the local time series features to obtain a corrosion state prediction model, inputting the enhanced features and the local time series features, and outputting corrosion rate prediction values, corrosion depth prediction values and corrosion risk score values. It can reflect the changes in the corrosion process in real time and improve the timeliness of decision-making.

The invention provides a polar region marine corrosion environment simulation system, which belongs to the technical field of polar region marine environment simulation, and comprises a test box, a workbench, a cold air box, a fan, a refrigerator, a seawater box, a test barrel, a solution pipe, a cold air pipe, a retainer, a sample holder and a temperature control system, the whole simulation system comprises an illumination mode, a floating ice mode, an ocean current mode and a freezing and thawing mode, the test box and the cold air box are installed on the workbench, and the refrigerator and the seawater box are placed below the workbench and connected with the cold air box and the test barrel on the workbench through pipelines so as to complete the work of conveying cold air and simulating a corrosion solution. The fan is installed on the left box wall of the cold air box and is opposite to the ventilation opening of the cold air box for air exchange, the sample holder is installed on the ball screw and can move up and down so that simulation experiments of different areas can be conducted on a sample, and accurate control over the temperature of the whole system can be achieved through the temperature control system.

The invention relates to an early-strength crack-resistant joint concrete premix and a preparation method thereof, and the early-strength crack-resistant joint concrete premix comprises the following components in parts by mass: 310-370 parts of cement, 130-160 parts of fly ash, 15-35 parts of silica fume, 33-56 parts of an expanding agent, 2.8-16.8 parts of a crystal nucleus early strength agent, 700-800 parts of fine aggregate, 1000-1100 parts of coarse aggregate, 2-12 parts of polyvinyl alcohol modified hybrid fiber, 0.5-2.5 parts of an internal curing material and 0.05-0.3 part of a defoaming agent. Wherein the polyvinyl alcohol modified hybrid fibers comprise modified basalt fibers and modified carbon fibers. The problems that in the related technology, joint concrete cannot meet the construction turnover requirement, the early strength does not reach the standard, the anti-cracking performance and the durability performance are poor, the marine corrosion resistance of steel fibers is weak, and the quality fluctuation in the concrete premix storage process is large can be solved.

The present invention discloses a titanium-steel composite plate structure for marine engineering and a preparation method thereof, belonging to the technical field of marine engineering materials. The composite plate comprises a titanium plate, a steel sheet, and a gradient functional layer arranged between the two. The gradient functional layer consists of a MOF-enriched layer on the titanium side, a composition-gradient transition layer, and a steel-side reinforcement layer. By performing nano-scale rough oxidation treatment on the surface of the titanium plate and constructing a nano-column array structure on the surface of the steel sheet, high-strength bonding of the heterogeneous metal interface and synergistic improvement of marine corrosion resistance are achieved. The preparation process adopts a gradient coating process of electrostatic spraying, aerosol jetting, and slit coating, combined with vacuum hot pressing bonding and cooling technology to prepare a titanium-steel composite plate for marine engineering.

The invention belongs to the technical field of marine corrosion cathode protection, and relates to an integrated full-sea-depth sacrificial anode and coating combined testing device which mainly structurally comprises an assembled multi-layer pressure-resistant frame, a sacrificial anode, a solid pressure-resistant reference electrode and a coating sample, and the sacrificial anode, the solid pressure-resistant reference electrode and the coating sample are arranged in the assembled multi-layer pressure-resistant frame. The pressure-resistant frame, the sacrificial anode, the solid pressure-resistant reference electrode and the coating sample are respectively connected to the multi-core watertight joint through the pressure-resistant wires to form a three-electrode system, the test cost is low, the operation stability is high, the long-period test is accurate, the pressure-resistant frame is a multi-layer combined frame and can resist the highest hydrostatic pressure of 100 MPa and the lowest low temperature of 2 DEG C, and the test result is accurate. The problems of contact corrosion and the like are effectively avoided, and under the full-sea-depth real sea and simulated environment working conditions from superficial seawater to myriameter deep sea, a multi-core watertight joint is externally connected with a galvanic corrosion instrument or an electrochemical workstation, so that a sacrificial anode and a coating collaborative anti-corrosion protection effect test are organically fused; and a development direction and an evaluation basis are provided for developing a high-performance sacrificial anode suitable for full-sea deep water conditions.

The invention discloses a special ultrahigh corrosion-resistant high-pressure cast aluminum alloy for marine equipment and a preparation process of the special ultrahigh corrosion-resistant high-pressure cast aluminum alloy. The aluminum alloy is designed by taking aluminum as a matrix and synergistically adding silicon, magnesium, various transition elements and rare earth elements of cerium and lanthanum in a specific proportion. The preparation process sequentially comprises the steps of smelting and refining, high-pressure die casting, heat treatment and surface treatment. Through the unique component design and the systematic combination of the whole-process technology, the high-pressure casting manufacturability of the alloy is kept, meanwhile, the marine corrosion resistance and the mechanical property are comprehensively improved, and the alloy is suitable for structural parts such as marine ship engine parts in the severe environment.

The application discloses a kind of optical fiber grating sensor device and calibration test method for marine steel bar corrosion monitoring, by providing a kind of specially designed for marine environment, based on the non-contact magnetic strain principle optical fiber grating sensor device, the device is packaged with full silicon-based material, fundamentally solve long-term corrosion problem;With magnetic non-contact sensing corrosion, avoid the interference caused by direct contact;Through symmetric double-end design, improve reliability and signal quality;Compact structure, easy to install.The application also provides calibration test method matched with the sensor device, by simulating the accelerated electrochemical corrosion test of marine corrosion environment, accurately establish the quantitative mathematical model between sensor output signal and the actual mass loss of steel bar, so as to give the quantitative monitoring ability of sensor, and provide calibration basis for the consistency of different batches of sensors.

The invention belongs to the technical field of building materials, and discloses a marine corrosion-resistant cementing material based on metallurgical solid waste and a composite mineralization activator and a preparation method thereof.The marine corrosion-resistant cementing material is prepared from, by mass, 60-89% of metallurgical solid waste powder, 10-38% of the composite mineralization activator and 0-3% of auxiliary components. The marine corrosion-resistant cementing material provided by the invention takes the metallurgical solid waste powder as a main raw material, so that efficient resource utilization of metallurgical solid wastes is realized, dependence on natural resources is reduced, the problem of environmental pollution caused by solid waste stockpiling is reduced, and the marine corrosion-resistant cementing material has good environmental protection benefits and economic benefits. The marine corrosion-resistant cementing material has the properties of low hydration heat, high strength, excellent chloride ion permeation resistance, freezing and thawing resistance, chemical corrosion resistance and the like, is particularly suitable for severe environments such as marine engineering and the like, and can effectively prolong the service life of an engineering structure and reduce the maintenance cost.

The invention relates to the field of power cable insulating materials, in particular to a marine corrosion-resistant waterproof power cable insulating material and a preparation method thereof, which are used for solving the problem that the stability and reliability of power transmission are affected due to poor corrosion resistance, water resistance and mechanical strength of the traditional cable insulating material. According to the preparation method, through an elaborately designed multi-component formula system, various high-performance components are fused, and the corrosion-resistant main agent and the corrosion-resistant auxiliary agent are added, so that the power cable insulating material has excellent corrosion resistance, water resistance and mechanical performance, long-term stable operation of a marine power cable in a severe marine environment is comprehensively guaranteed, and the service life of the marine power cable is prolonged. The service life of the cable in a severe marine environment is effectively prolonged, and the preparation method is simple in step, easy for industrial large-scale production, good in economic benefit, wide in market application prospect and capable of providing reliable guarantee for stable operation of a marine power system.

The present invention discloses a method for characterizing and evaluating marine corrosion under paint based on pulsed eddy current thermal imaging and BEMD noise reduction method, and belongs to the technical field of marine corrosion detection. The method comprises the following steps: using pulsed eddy current thermal imaging ECPT to detect marine corrosion samples, and obtaining a corrosion image sequence of the surface temperature rise and fall of corrosion samples with different corrosion degrees; using the BEMD method to separate the corrosion image layer by layer, and remove the intrinsic mode function IMF corresponding to the noise, and reconstruct the corrosion image; comparing the corrosion area and the non-corroded area of ​​the corrosion image after noise removal, and evaluating the corrosion degree of the marine corrosion test sample. Through accurate corrosion characterization and evaluation, the present invention can provide a scientific basis for the corrosion protection design of marine structures, help engineers take protective measures in time, extend the service life of marine facilities, and reduce the economic losses caused by corrosion.

The invention belongs to the technical field of marine corrosion prevention, and particularly relates to a titanium dioxide nanotube array and a preparation method and application thereof. The preparation method comprises the following steps: cleaning and drying a titanium sheet in sequence; the dried titanium sheet is subjected to primary anodic oxidation in a fluorine-containing ethylene glycol electrolyte, and an oxidation layer generated on the surface of the titanium sheet through primary anodic oxidation is removed; the titanium sheet with the oxide layer removed is subjected to anodic oxidation in an ethylene glycol composite electrolyte containing fluorine and phosphate; the titanium sheet subjected to anodic oxidation is annealed, and an anatase type titanium dioxide nanotube array with the lotus-root-shaped surface is obtained; wherein the oxidation voltage of anodic oxidation ranges from 18 V to 22 V, and the temperature ranges from 15 DEG C to 16 DEG C. And the photo-generated cathode protection performance of the titanium dioxide nanotube array on the stainless steel is obviously improved.

The utility model provides a kind of marine corrosion-resistant anti-vibration intelligent high-low voltage switch cabinet, including shell, the shell includes front plate, back plate, left side plate, right side plate, top plate and bottom plate, between left side plate and right side plate still be equipped with baffle, the baffle will switch cabinet inside be divided into two areas of front and back, multiple wire slots are equipped on the front and back of baffle, wire slot is evenly equidistant and is transversely parallel arrangement, shock-absorbing support is equipped between wire slot, electric appliance module is installed on shock-absorbing support;By corrosion-proof design in switch cabinet shell, shell is made of 316L stainless steel, and is coated with fluorocarbon coating etc., can effectively resist the corrosion of marine environment, prolong the service life of switch cabinet, reduce maintenance cost, and inside by setting shock-absorbing support, anti-vibration rib and reinforcing rib etc. Structure, can effectively buffer and absorb vibration energy, reduce the influence of vibration on electric element, protect the normal work of electric element, improve the reliability of switch cabinet.

The invention discloses a seawater corrosion resistant nitrided steel plate 38CrMoNiAl medium steel plate and a production method thereof. The steel plate comprises the following chemical components in percentage by weight: 0.35 to 0.39 percent of C, 0.30 to 0.55 percent of Si, 0.30 to 0.60 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.010 percent of S, 1.35 to 1.60 percent of Cr, 0.30 to 0.40 percent of Ni, 0.25 to 0.38 percent of Cu, 0.15 to 0.25 percent of Mo, 0.70 to 1.10 percent of Al and the balance of Fe and inevitable impurities. Through the design of medium-carbon components and the addition of Cr, Cu, Ni, Nb and other elements, the seawater corrosion resistance and the-40 DEG C low-temperature impact toughness are improved, and the seawater corrosion resistance and the-40 DEG C low-temperature impact toughness are obviously superior to those of 10CrMoAl and 38CrMoAl.

The present application belongs to the technical field of pile foundation in geotechnical engineering, and proposes a gradient grouting reinforcement test device and method in a corrosive foundation environment. The gradient grouting mechanism includes a grouting circular inner tube, a grouting circular outer tube sleeved outside the grouting circular inner tube, and a plurality of grouting circular inclined pipes arranged on the grouting circular outer tube. A gap is left between the grouting circular inner tube and the grouting circular outer tube. The gradient grouting mechanism realizes gradient precise grouting at different depths through the rotational movement of the grouting inner tube. The steel electrochemical accelerated corrosion system can simulate the marine corrosion environment and the land corrosive foundation, realize the accelerated corrosion of the pile foundation, and on this basis, reinforce the pile body through the gradient grouting method. The actual corrosive foundation environment can be accurately simulated, and effective test means and scientific basis are provided for the repair and reinforcement of the pile foundation in the corrosive environment.

The application discloses a high-temperature-resistant organic silicon modified coating and a preparation method, and relates to the technical field of anticorrosive coatings.The high-temperature-resistant organic silicon modified coating and the preparation method have the advantages that the heat-resistant stability and the interfacial bonding strength of a resin system are optimized by adopting a specific proportion of modified organic silicon resin and fillers, the coating failure problem under a high-temperature and corrosion environment is effectively solved, the high-temperature-resistant organic silicon modified coating has excellent high-temperature-resistant performance and corrosion resistance, can effectively resist a 500 DEG C high temperature and a marine corrosion environment, prevents the coating from cracking and the adhesion from decreasing, and prolongs the service life of a ship pipeline.

The invention discloses an offshore power station corrosion prediction method, device and equipment and a storage medium, and relates to the technical field of marine corrosion monitoring, and the method comprises the steps: obtaining the environment monitoring data of an offshore power station; the actual corrosion state of the target monitoring part on the offshore power station is determined, and the determining mode of the actual corrosion state comprises at least one of the steps of applying a high-frequency signal and adjusting thermocouple probe monitoring; and predicting the corrosion state of the target monitoring part according to the environment monitoring data and the actual corrosion state to obtain the predicted corrosion state of the target monitoring part. According to the method, the real-time environment data is associated with the real corrosion response of the structure, and multi-source information fusion analysis of the environment driving factors and the actual corrosion behavior of the structure is realized, so that the corrosion state of the key part of the offshore wind turbine generator is accurately predicted, and a reliable basis is provided for timely finding corrosion hidden dangers and formulating targeted protective measures.

The application discloses a kind of gradient composite modified marine corrosion-resistant aluminum alloy cable conductor materials and production method thereof, belong to wire and cable material technical field.The method includes: in 6 or 7 aluminum alloy matrix, add 0.1%~0.5% rare earth element yttrium, cerium and 0.05%~0.2% zirconium, titanium carries out multielement microalloying, adds 1.5%~2.5% zinc and 0.5%~1.0% magnesium constructs sacrificial anode phase, dopes 1.5%~2.5% nano graphene oxide / nanosilicon carbide fills micro-pore;Conductor surface layer is treated by chromium-free passivation by titanium zirconium composite passivation solution, and then the inorganic-organic gradient coating of "silicon oxide-aluminum oxide ceramic bottom layer+fluorocarbon resin surface layer" is constructed;By component segregation control, the core-surface dual-function gradient structure of core high-conductivity aluminum alloy matrix and surface corrosion-resistant strengthening layer is formed.The application is significantly improved by multidimensional composite modification design, the corrosion resistance and long-term service life of aluminum alloy cable conductor in marine high-salt fog environment, conductivity is greater than or equal to 62% IACS, no visible corrosion in salt spray 2000h, service life is more than 30 years.

A weakly deoxidized Q420MPa grade marine climate corrosion resistant steel, its composition and wt% are as follows: C: 0.05-0.15%, Si: 0.10-0.30%, Mn: 1.00-1.70%, P: 0.050-0.100%, S≤0.002%, Cu: 0.15-0.35%, Ni: 0.10-0.30%, Nb: 0.020-0.050%, Ti: 0.005-0.020%, O: 0. 0.010~0.025%, 0.020%≤Ce+La≤0.050%, 10%≤Si / O≤20%, 5%≤Mn / Si≤10%, CEV≤0.45, CEV=C+Mn / 6+(Cr+Mo+V) / 5+(Ni+Cu) / 15; Production process: After desulfurization of molten iron, it is smelted in a conventional converter; after casting, the billet is heated; high-pressure water descaling; rough rolling; finish rolling; cooling to coiling temperature; coiling; and conventional subsequent processes. This invention achieves a stable ferrite + pearlite + bainite microstructure by ensuring a yield strength ≥410MPa, tensile strength ≥550MPa, and elongation after fracture ≥27%, using a low C, high P, and high O composition, adding certain amounts of Mn, Cu, Ni, Nb, Ti, Ce, La, etc., and achieving a low-temperature impact energy of -60℃ ≥170J and an annual corrosion rate of ≤1.3mm / y in marine climates.