6949 results about "Corrosion resistant" patented technology

Systems and methods described herein may include pumps and pump components including carbon-manganese-chromium (C—Mn—Cr)-based steel alloys for enhanced resistance to wear or corrosion. A pump component may include one or more components formed of a C—Mn—Cr-based ferrous alloy, which may result in enhanced wear or corrosion resistance. The C—Mn—Cr-based ferrous alloy may include a carbon content ranging from about 0.1 weight percent (wt. %) to about 2 wt. %, a manganese content ranging from about 10 wt. % to about 30 wt. %, and a chromium content ranging from about 0.1 wt. % to about 20 wt. %.

The invention discloses an elevator steel wire rope wear real-time monitoring system and equipment thereof, and relates to the technical field of safety monitoring, the elevator steel wire rope wear real-time monitoring system comprises an acquisition and extraction module which acquires real-time surface image data and vibration signal data of a steel wire rope through a sensor array, extracts surface damage features and vibration spectrum features by adopting an image processing algorithm, and sends the surface damage features and the vibration spectrum features to a server; fusing kernel function selection and hyperplane separation to process the preliminary wear feature set; the crack identification module is used for fusing tensile strength and corrosion resistance data in the material characteristic database according to the initial wear characteristic set, classifying potential fatigue crack types through support vector identification and crack morphological characteristics by adopting a support vector machine algorithm, and determining a fatigue crack distribution diagram; according to the elevator steel wire rope abrasion real-time monitoring system and equipment thereof, accurate abrasion evaluation and dynamic maintenance optimization are achieved, the safety of the steel wire rope is improved, and the service life of the steel wire rope is prolonged.

The invention discloses a corrosion-resistant offshore wind power FRP-steel composite tower tube structure multi-objective optimization design method. The method comprises the following steps that a composite tower tube structure in an outer layer GFRP-steel tube-inner layer GFRP composite section form is adopted below the sea level and in a splash zone; mapping the coupling load time history to a parameterized finite element model of the composite tower tube structure; constructing a multi-objective optimization function by taking the minimization of the total manufacturing cost of the composite tower drum structure, the minimization of the total mass of the composite tower drum structure and the maximization of the total volume proportion of the GFRP material of the composite tower drum structure as objectives; and establishing a constraint evaluation system, carrying out iterative optimization on the multi-objective function by adopting a fast non-dominated sorting genetic algorithm with an elitist retention strategy, outputting a Pareto optimal solution set, and selecting a final implementation scheme. The problems that a traditional pure steel tower drum is large in corrosion loss and the design is difficult to balance multiple performance targets in the severe ocean environment can be solved.

The invention relates to the technical field of non-ferrous metal processing, and particularly provides a preparation method of a high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile. The preparation method of the high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile comprises the following steps that S1, after alloy raw materials are subjected to smelting treatment and refining treatment, an ingot blank is obtained through casting treatment or spray forming treatment; s2, the ingot blank is subjected to homogenization treatment and extrusion treatment, and an extruded profile is obtained; and S3, the extruded profile is subjected to solid solution quenching treatment and two-stage aging treatment, and the high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile is obtained. According to the invention, specific extrusion process parameters are adopted and a two-stage aging heat treatment system is combined, so that the preparation of the low-cost, low-density, high-strength and corrosion-resistant aluminum alloy profile is successfully realized.

The invention discloses a coastal corrosion geological environment structure corrosion resistance evaluation method and system, and relates to the technical field of building structure corrosion resistance evaluation. The method comprises the steps of data acquisition, coast environment corrosion factor data is acquired by arranging a sensor module, related data of a building structure is acquired at the same time, and the accuracy of assessment data and assessment results is effectively improved by considering multiple factors into the corrosion resistance assessment of the building structure in the coast region; meanwhile, a coupling corrosion rate correction model is constructed, corrosion factor data monitored in real time and real-time data of the building structure are combined, the purpose of evaluating the corrosion resistance of the building structure in the coastal area according to real-time changes of corrosion factors in the tidal period is achieved, the real-time performance of an evaluation result is guaranteed, and the evaluation efficiency is improved. And the accuracy of the evaluation data is further improved.

The invention discloses a coating with in-situ plugging and active protection functions as well as a preparation method and application thereof, and belongs to the technical field of metal material surface treatment. An innovative electrolyte design scheme is provided, the commercial 5083 aluminum alloy is subjected to micro-arc oxidation in a phosphate system containing specific cerium salt and a complexing agent, film layer growth and in-situ chemical blocking of micropores are completed in one step, the process is simple, and the obtained coating has excellent blocking firmness and corrosion resistance, has an active protection function and is suitable for large-scale industrial production. And a new solution is provided for improving the durability of the 5083 aluminum alloy in a harsh marine environment.

The invention provides a corrosion-resistant and high-temperature-resistant composite quartz crucible and a preparation method thereof. The quartz crucible sequentially comprises the following laminated layers in parts by weight from inside to outside: 50-100 parts of an inner layer, 200-400 parts of a transition layer, 150-250 parts of a reinforcing layer and 40-80 parts of an outer layer, the preparation method comprises the following steps: forming layer by layer: sequentially adding inner-layer slurry, transition-layer powder, a reinforcement-layer prefabricated member and outer-layer slurry into a mold for forming; gradient drying is conducted, specifically, the formed crucible blank is put into a drying box to be subjected to gradient drying; and step-by-step sintering: putting the dried crucible blank into a high-temperature sintering furnace, carrying out step-by-step sintering, and cooling and demolding to obtain a crucible product. A composite protection system is designed and constructed through four layers of functionally graded materials, the prepared composite quartz crucible has excellent high temperature resistance, corrosion resistance and structural stability and can be applied to large-size semiconductor single crystal furnaces, and the engineering advantage of the preparation process is remarkable.

The invention relates to the technical field of semi-gold-nickel plating and processing, in particular to a floating connector terminal continuous semi-gold-nickel plating process which comprises the following preparation steps: S1, a floating connector terminal to be electroplated is put into degreasing fluid for degreasing treatment, and then the degreased terminal is put into activating fluid for activating treatment; s2, nickel electroplating is conducted on the activated floating connector terminal through a nickel plating solution, a nickel cake serves as an anode, the pH value of the nickel plating solution is controlled to be 3.5-5.5 through weak acid in the electroplating process, the electroplating current is controlled to be 0.4-0.8 A / dm < 2 >, the temperature is controlled to be 50-60 DEG C, cleaning is conducted, and the nickel-plated floating connector terminal is obtained; and S3, the nickel-plated floating connector terminal is put into the gold plating solution to be electroplated, the electroplating temperature is 40-50 DEG C, the current density is 0.1-2 A / dm, a finished product is obtained, and the floating connector terminal can still keep high conductivity, low contact resistance, high abrasion resistance and high corrosion resistance under the complex environments of high temperature, vibration, salt mist and the like through the technology.

The invention relates to the technical field of alloys, in particular to a weldable high-temperature corrosion-resistant nickel-based alloy and a preparation process thereof. The nickel-based alloy comprises Cr, Mo, W, Ti, Al, Nb, Co, B, Zr, La, C, Si, Mn, P, S and the balance Ni and inevitable impurities. The element content meets the following conditions: Al + 0.5 Ti + 0.3 Nb is greater than or equal to 3.35 wt.% and less than or equal to 3.8 wt.%, the volume fraction of the gamma'phase is correspondingly 28-34%, and the electron vacancy number Nv is less than 2.6. According to the preparation process, VIM and PESR duplex smelting, multi-pass forging, solid solution rapid cooling and aging heat treatment are adopted, and the welding process is optimized in a matched mode. The alloy has excellent welding performance while maintaining excellent high-temperature strength and corrosion resistance, and is particularly suitable for high-temperature parts needing to be welded in the fields of aerospace, energy, chemical industry and the like.

The invention discloses a wide-temperature-range wear-resistant high-entropy alloy coating as well as a preparation method and application thereof, and belongs to the technical field of wear-resistant materials. The wide-temperature-range wear-resistant high-entropy alloy coating comprises a high-entropy alloy bottom layer and a high-entropy alloy oxide surface layer, the high-entropy alloy in the high-entropy alloy bottom layer comprises at least four elements of Ti, Nb, Cr, Mo, V and Ta; the high-entropy alloy oxide surface layer is formed after high-entropy alloy in the surface area in the high-entropy alloy bottom layer is subjected to in-situ oxidation. The wide-temperature-range wear-resistant high-entropy alloy coating has high hardness and wide-temperature-range mechanical property stability, has excellent wear resistance and corrosion resistance in the range of room temperature to 700 DEG C, and can greatly improve the use performance and prolong the service life of a high-temperature moving part.

The invention relates to the technical field of coatings, in particular to a corrosion-resistant coating material and a preparation method thereof. The corrosion-resistant coating material comprises the following components in parts by mass: 80-100 parts of epoxy resin, 5-20 parts of a modified phenolic aldehyde amine curing agent, 2-5 parts of a waterproof agent, 5-10 parts of a corrosion inhibitor and 40-55 parts of a lubricant. The modified phenolic aldehyde amine curing agent is obtained by carrying out Mannich reaction on phenol, thymol, aliphatic polyamine and formaldehyde. The phenol provides a rigid benzene ring structure, and endows a cured product with good heat resistance and chemical resistance. Thymol improves the flexibility and adhesive force of the cured product and enhances the hydrophobicity of the cured product at the same time. The epoxy resin and the modified phenolic aldehyde amine curing agent are polymerized, the waterproof agent, the corrosion inhibitor and the lubricant are wrapped, and the obtained coating material has good adhesive force and corrosion resistance.

The invention discloses a high-temperature-resistant and corrosion-resistant coating for an aluminum alloy heat exchange tube and a preparation method thereof, and relates to the technical field of coating materials. The method comprises the following steps that the aluminum alloy heat exchange tube is cleaned and deoiled, then a treating agent is sprayed, composite coating slurry is sprayed to the surface of the aluminum alloy heat exchange tube after curing, and the high-temperature-resistant and corrosion-resistant coating for the aluminum alloy heat exchange tube is obtained after curing treatment. Wherein the treating agent is prepared from NS-30 silica sol, deionized water and methyltrimethoxysilane; the composite coating slurry is prepared from a polyamide acid solution, a synergist, functionalized boron nitride nanosheets, modified hexagonal boron nitride, a flatting agent and a defoaming agent. The silane film introduced into the treating agent and the synergist, the functionalized boron nitride nanosheet and the modified hexagonal boron nitride introduced into the composite coating slurry effectively improve the high temperature resistance, the corrosion resistance, the adhesive force, the thermal conductivity, the aging resistance and the toughness of the coating. Therefore, the method has a wider application prospect.

The invention belongs to the technical field of chemical coatings, and particularly relates to a scratch-resistant coating and a preparation method thereof. The scratch-resistant coating is prepared from the following raw materials in parts by weight: 15 to 20 parts of polyethylene glycol monomethyl ether acrylate, 25 to 30 parts of isodecyl acrylate, 40 to 50 parts of acrylic acid, 10 to 15 parts of reactive diluent, 4 to 5 parts of photoinitiator, 0.5 to 1 part of flatting agent, 3 to 7 parts of nano filler and 8 to 12 parts of modified silicon carbide fiber. Compared with the prior art, novel modified silicon carbide fibers are introduced into the scratch-resistant coating, and synthesized acrylic resins are intertwined to form a complex network structure, so that the brittleness of the coating is reduced, and cracking is avoided; the coating has good scratch resistance, the wear resistance and weather resistance of the coating are improved, and the mechanical property of the coating is also improved; in addition, the scratch-resistant coating is high in self-cleaning capacity and good in adhesive force and corrosion resistance.

The invention belongs to the technical field of manufacturing of low-alloy high-strength steel, and particularly relates to atmospheric corrosion resistant HC260LA low-alloy high-strength steel and a production method of the atmospheric corrosion resistant HC260LA low-alloy high-strength steel. 0.15% to 0.30% of Si; 0.40% to 0.60% of Mn; 0.06% to 0.10% of P; less than or equal to 0.015% of S; 0.02% to 0.08% of Al; 0.10% to 0.20% of Cu; 0 to 0.15% of Ti; 0 to 0.09 percent of Nb; 0.001% to 0.006% of N; and the balance of Fe and inevitable impurities. According to the method, the blocking effect of segregation of P-Cu elements on the grain boundary on a corrosion path is utilized, low-temperature rolling is combined, a three-dimensional corrosion-resistant system of fine grain strengthening, substructure strengthening and rust layer protection is constructed, and the weather resistance, the corrosion resistance and the mechanical property are jointly improved.

The invention provides a water-based floating aluminum pigment and a preparation method thereof.The preparation method of the water-based floating aluminum pigment comprises the steps that an aluminum pigment and a silane coupling agent are subjected to a grafting reaction in the presence of an alkaline regulator, the silane coupling agent is grafted to the surfaces of aluminum particles, and a pretreated aluminum pigment is obtained; and carrying out polymerization reaction on the pretreated aluminum pigment, a hydrophilic monomer and a hydrophobic monomer under the condition of an initiator, and coating the surfaces of aluminum particles with an amphiphilic polymer to obtain the water-based floating aluminum pigment. According to the water-based floating aluminum pigment and the preparation method thereof provided by the invention, after the aluminum pigment is modified by using a silane coupling agent, the surfaces of aluminum particles are coated with a layer of amphiphilic polymer, so that the floating performance of the obtained aluminum pigment is improved, and meanwhile, the corrosion-resistant effect of the aluminum pigment is improved.

The invention relates to the technical field of basalt fiber reinforced composite material pipelines and preparation methods thereof, and discloses a pipeline named as a basalt fiber reinforced composite material pipeline and a preparation method thereof and a preparation method thereof. The invention aims to overcome the defects of continuity, interface bonding and mechanical properties of the conventional basalt fiber reinforced composite material pipeline. The pipeline is composed of a lining layer, a basalt fiber winding reinforcing layer and an outer protective layer, the reinforcing layer is formed by compounding basalt fiber bundles subjected to surface treatment and a resin matrix, and the reinforcing layer is of a multi-layer structure with different winding angles. The preparation method comprises the following steps: roughening the inner lining layer, infiltrating and accurately winding the fiber bundles, performing multi-section curing and forming the outer protective layer. According to the scheme, the macroscopic mechanical property of the pipeline is remarkably improved, the interface combination of fibers and a matrix is optimized, the integrity of the fibers is kept, efficient preparation is achieved, and the pipeline has the advantages of being excellent in corrosion resistance and ultraviolet resistance, long in service life and the like.

The invention provides corrosion-fatigue-resistant ultrahigh-strength maritime work steel and a preparation method thereof, and relates to the technical field of maritime work steel manufacturing. The maritime work steel comprises the following components in percentage by mass: 0.04 to 0.07 percent of C, 0.20 to 0.26 percent of Si, 1.45 to 1.60 percent of Mn, less than or equal to 0.01 percent of P, less than or equal to 0.015 percent of S, 1.44 to 1.52 percent of Cr, 1.44 to 1.52 percent of Ni, 0.88 to 0.96 percent of Cu, 0.08 to 0.12 percent of Nb, 0.08 to 0.12 percent of Sb and the balance of Fe and inevitable impurities. The corrosion-fatigue-resistant ultrahigh-strength maritime work steel is prepared through raw material smelting and casting, austenitizing heat treatment, multi-pass hot rolling and cooling and temperature control. The corrosion resistance, the fatigue resistance and the corrosion fatigue resistance of the ultrahigh-strength maritime work steel are remarkably improved while the mechanical property of the ultrahigh-strength maritime work steel is improved, and the ultrahigh-strength maritime work steel has great significance in guaranteeing safe and stable operation of ocean engineering.

The invention discloses light building corrosion-resistant fiber concrete and a production method thereof, the light building corrosion-resistant fiber concrete comprises the following raw materials by mass: 300-400 parts of high belite sulphoaluminate cement, 10-20 parts of modified corrosion-resistant fiber, 50-80 parts of a mineral admixture, 800-1000 parts of a coarse aggregate, 600-700 parts of a fine aggregate, 5-10 parts of a composite admixture, and 120-150 parts of water; wherein the mineral composition of the high belite sulphoaluminate cement is as follows: 18 to 25 percent of C4AF, 15 to 20 percent of anhydrous calcium sulphoaluminate (C4A3S), 45 to 55 percent of belite (C2S) and less than or equal to 10 percent of other minerals. By optimizing the ratio of C4AF to anhydrous calcium sulphoaluminate in the high belite sulphoaluminate cement and combining with a special calcining process, the contradiction of low early strength caused by increase of the content of C4AF is solved, and meanwhile, a foundation is laid for long-term corrosion resistance; and by adopting a silane coupling agent-nano silicon dioxide composite modification technology, the limitation of limited single modification effect is solved, and the synchronous improvement of the corrosion resistance of the fiber and the interface bonding strength is realized.

The invention discloses a high-toughness corrosion-resistant semi-solid injection molding magnesium alloy and a preparation method thereof, and belongs to the technical field of metal materials. The magnesium alloy comprises the following chemical components in percentage by weight: 8.6 to 11 percent of aluminum, 0.5 to 1 percent of zinc, 0.05 to 0.4 percent of manganese, 0.05 to 0.2 percent of calcium, 0.6 to 2 percent of rare earth element RE and the balance of magnesium and inevitable impurities. The preparation method of the alloy comprises the following steps: (1) adding raw materials according to the component proportion, smelting into magnesium alloy melt, pouring into a mold, and molding to obtain a magnesium alloy ingot; (2) cutting the cast ingot into magnesium alloy semi-solid blank particles; (3) performing injection molding to obtain a molded part; (4) solid solution heat treatment; and (5) performing two-stage aging heat treatment. The magnesium alloy has high toughness and corrosion resistance, and is suitable for semi-solid injection molding. The forming process can achieve near-net forming of complex components, and castings are few in defect, compact in structure and wide in application prospect.

The invention discloses a chlorine salt corrosion resistant prestressed concrete solid square pile and a construction method thereof, a cementing material of a pile body concrete body of the square pile comprises a mineral admixture accounting for 50%-70% of the total mass of the cementing material, and the cementing material adopts Portland cement; sacrificial anode blocks electrically connected with the main reinforcements are embedded in the pile body concrete body. The pile body concrete body is doped with a composite corrosion-resistant and rust-resistant agent; the outer surface of the pile body concrete body is coated with polyurea waterproof paint or epoxy seal primer. An electromigration type corrosion inhibitor and a microcapsule containing bacillus are doped into the pile body concrete body; the prestressed main reinforcements are steel reinforcements with anti-corrosion coatings; and fiber bragg grating sensors are pre-embedded around the prestressed main reinforcements. The mixing proportion of the concrete body of the pile body is specially designed for fixing and blocking chloride ions, an inapplicable sulfate-resistant cement scheme is abandoned, and the chlorine salt resistance is improved from the source of materials.

The invention relates to the technical field of stainless steel production and manufacturing, and discloses a high-strength corrosion-resistant duplex stainless steel shaft forging method which comprises the steps of blank preparation, homogenization treatment, preheating treatment, multidirectional forging, interrupted cooling, solution treatment, aging treatment and surface finish machining. Uniformity of components in the blank and consistency of temperature distribution are guaranteed, a uniform microstructure basis is provided for subsequent forging, meanwhile, grains are refined through large deformation and multi-pass deformation in multi-directional forging, the strength and toughness of the shaft are improved, brittle phase formation is avoided, and the mechanical property is optimized; by interrupting cooling and solution treatment, controlling the cooling rate and heating parameters in real time, inhibiting harmful phase precipitation and optimizing the austenite-ferrite phase proportion, the shaft has high corrosion resistance, and by means of aging treatment, through a stable structure, the long-term durability of the shaft in a severe environment is guaranteed, and the corrosion weight loss and pitting corrosion risk are reduced.

The invention discloses a corrosion-resistant anti-cracking cable sheath material and a preparation method thereof, and belongs to the technical field of cable materials. The sheath material is prepared by adopting ethylene-vinyl acetate rubber and ethylene-propylene-diene monomer rubber as matrixes, adding graphene modified conductive carbon black and self-repairing microcapsules in a specific proportion, and carrying out banburying premixing, open milling feeding, dynamic vulcanization and other multi-step processes. Graphene and carbon black form a stable conductive network according to a specific ratio under the action of a silane coupling agent, urea resin is taken as a wall material of the self-repairing microcapsule, epoxy resin and a curing agent in a core material are in a specific ratio, and the repairing efficiency is ensured. The tensile strength retention rate of the material is greater than or equal to 92% and the elongation at break retention rate is greater than or equal to 88% after the material is aged for 1500 hours in a salt mist environment, the strength recovery rate of microcracks reaches 85% or above after the microcracks are subjected to heat treatment at 70 DEG C for 2 hours, and the material has excellent corrosion resistance, cracking resistance, self-repairing function and static dissipation capacity and is particularly suitable for cable protection in severe environments such as marine transportation and chemical engineering.

The invention discloses a corrosion-resistant copper alloy pipe. The corrosion-resistant copper alloy pipe comprises the following components in percentage by mass: 0.05-0.40% of P, 0.001-0.1% of X, and the balance of Cu and inevitable impurities, wherein the X is selected from at least one of Al, Ni or RE; in the structure of the copper alloy pipe, the volume fraction of the small-angle grain boundary is 40-65%, and the volume fraction of the large-angle grain boundary is 25-50%. The copper alloy pipe has good corrosion resistance and oxidation resistance, and meanwhile beneficial bending, flaring, welding and pressure resistance are guaranteed. The invention further discloses a preparation method of the copper alloy pipe. The technological process of the preparation method comprises the steps of smelting, casting, face milling, rolling, stretching, rewinding and secondary annealing. Wherein the secondary annealing temperature is 350 to 580 DEG C, and the annealing time is 0.5 to 3.5 hours. The invention further discloses application of the copper alloy pipe and the copper alloy pipe prepared through the preparation method to preparation of a heat conduction pipe of an air conditioner heat exchanger, an air conditioner indoor and outdoor unit connecting pipe or a built-in pipe or a pipe assembly.

The invention relates to the technical field of automobile engineering, and discloses a composite sealing strip embedded corrosion-resistant light-weight vehicle door structure which comprises a vehicle door body, a vehicle door edge is arranged on the outer side of the vehicle door body in a surrounding and protruding mode, and a sealing strip assembly is arranged on the inner side of the vehicle door edge in a surrounding mode. Internal gas is bidirectionally shunted through a communicating groove and a vent groove, part of the gas flows into a buffer folding hose to enable the buffer folding hose to rapidly expand and extend, door closing impact energy is absorbed by means of the high resilience characteristic of foamed rubber, a traditional single buffer structure is replaced to realize energy shunting, hard contact force is greatly weakened, and abnormal sound is eliminated. The other part of gas drives sealing rubber extrusion blocks at the upper end and the lower end of a clamping block to expand, so that the sealing rubber extrusion blocks are tightly attached to a vehicle body door frame fitting block, and the defect of compression permanent deformation after a traditional single rubber strip is opened and closed for a long time is overcome in cooperation with the double-sealing effect that a sealing air bag is tightly attached after pressure relief through an exhaust hole.

The invention relates to the technical field of cables, and provides a high-toughness corrosion-resistant medium-voltage power cable, which comprises a conductor, and an insulating layer, a shielding layer, an armor layer and a sheath layer which are sequentially arranged outside the conductor, the sheath layer comprises the following components in parts by weight: 70-100 parts of polyvinyl chloride, 30-40 parts of nitrile rubber, 10-15 parts of a flame retardant, 15-20 parts of a plasticizer, 1-3 parts of an antioxidant, 5-10 parts of a filler, 2-4 parts of a heat stabilizer, 1-3 parts of a compatilizer and 0.5-2 parts of a cross-linking agent; the filler is prepared from the following raw materials in parts by weight: 100 parts of calcium carbonate, 20 to 24 parts of 2-ethylhexyl acrylate and 6 to 10 parts of acrylic acid. According to the technical scheme, the problem of poor corrosion resistance of the medium-voltage power cable in the prior art is solved.

The invention provides a bio-based super-hydrophobic coating magnesium alloy material with anti-icing and corrosion-resistant functions as well as a preparation method and application of the bio-based super-hydrophobic coating magnesium alloy material. According to the material, a polylipoic acid-metal ion-hydrophobic carbon black coating is constructed on the surface of the pretreated magnesium alloy, so that the key problems that the corrosion rate of the magnesium alloy is high and the surface of the magnesium alloy is easy to freeze in practical application are solved. The coating is firmly combined with a matrix through multiple hydrogen bond effects, and the coating is endowed with rapid self-repairing capability by virtue of synergistic dynamic effects of disulfide bonds, hydrogen bonds and metal coordinate bonds. And meanwhile, the doped hydrophobic carbon black particles obviously improve the surface super-hydrophobic performance. The self-repairing characteristic is combined with the super-hydrophobic structure, so that corrosion medium infiltration is effectively blocked, and the corrosion process of the magnesium alloy is greatly delayed. In addition, the coating has photo-thermal and electrothermal effects, active anti-icing and efficient deicing can be achieved, and the application potential of the magnesium alloy in a severe environment is remarkably expanded.

The invention relates to the technical field of acrylate adhesives, in particular to a strong acid corrosion resistant high-viscosity UV visbreaking protective film and a preparation method thereof. The protective film provided by the invention is prepared from the following raw materials in parts by mass: 50 to 75 parts of high-Tg acrylic UV resin, 25 to 50 parts of low-Tg acrylic UV resin, 1 to 3 parts of photoinitiator, 10 to 20 parts of trifunctional UV active monomer PETA, 50 to 100 parts of solvent and 1 to 3 parts of cross-linking agent. The acid-resistant time of the prepared protective film in a 20wt% HF solution at the temperature of 50 DEG C exceeds 4 h, the adhesive force before UV reaches 1600-1900g / 25mm, the adhesive force after UV is reduced to 0-15g / 25mm, no adhesive residue exists, reliable protection and lossless stripping in a precise element strong acid process can be achieved, the requirements of high-end manufacturing industries such as semiconductors and OLEDs can be met, and meanwhile the protective film has the advantages of being stable in process, environmentally friendly and compliant.

The invention relates to the field of coatings, and discloses a high-chroma corrosion-resistant yellow coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: 50 to 60 parts of waterborne epoxy modified organic silicon resin, 25 to 35 parts of modified bismuth vanadate, 1 to 2 parts of nano cellulose, 0.3 to 0.8 part of dispersing agent, 0.2 to 0.5 part of defoaming agent, 0.2 to 0.5 part of flatting agent and 2 to 3 parts of corrosion inhibition pigment. The formula system of the high-chroma corrosion-resistant yellow coating is innovative, a waterborne epoxy modified organic silicon resin-modified bismuth vanadate-nanocellulose ternary synergistic system is constructed, and the high-chroma corrosion-resistant yellow coating has excellent chroma and corrosion resistance. According to the coating, flaky bismuth vanadate generated through microwave method induction is adopted, lattice defects are few, chromaticity is broken through, and high corrosion resistance is achieved.

The present invention provides a substrate with a coating comprising, in order: a) a substrate; b) a primer layer comprising a first transition metal or an oxide thereof; c) one or more corrosion resistant layers, each layer comprising a first sub-layer, a second sub-layer and a third sub-layer, the sub-layers comprising the first transition metal and a second transition metal, where the ratio of the first transition metal and the second transition metal varies between the sub-layers; d) a conductive layer comprising the second transition metal, or a nitride thereof and / or an oxide thereof. The invention also describes a method for producing such a substrate with a coating. The coated substrate has good electrical conductivity and corrosion resistance.

The invention discloses wear-corrosion-resistant high-strength steel for a power transmission tower and a preparation method thereof, and belongs to the technical field of metal materials. The wear-corrosion-resistant high-strength steel for the power transmission tower provided by the invention has good corrosion resistance and wear resistance, has excellent wear resistance in a soil environment of sulfate ions with the concentration of 300 mg / kg-50000 mg / kg and chloride ions with the concentration of 500 mg / kg-10000 mg / kg, and meets various environmental performance requirements of an acid soil environment, an atmospheric corrosion environment and the like. In an acid soil environment, the corrosion resistance is more than 8 times that of plain carbon steel, and the relative corrosion rate is lower than 10%; compared with Q355B, the corrosion rate of atmospheric corrosion resistance is lower than 40%, and the abrasive wear rate is 26.5%-28.0%; and through reasonable matching of corrosion-resistant elements, the requirements of corrosion resistance in various environments are met. The yield strength is 775 MPa-805 MPa, the tensile strength is 952 MPa-985 MPa, the percentage elongation after fracture A50 is larger than or equal to 28%, the low-temperature impact toughness at the temperature of-60 DEG C is larger than or equal to 260 J, meanwhile, the forming performance is excellent, and the 180-degree cold bending requirements that d is equal to 1.0 a are met.