583results about How to "Good corrosion resistance" patented technology

A silver-based alloy thin film is provided for the highly reflective or semi-reflective layer of optical discs. Alloy additions to silver include gold, palladium, copper, rhodium, ruthenium, osmium, iridium, and platinum. These alloys have moderate to high reflectivity and reasonable corrosion resistance in the ambient environment.

The invention discloses a petroleum wellhead annular space sealing device. The petroleum wellhead annular sealing device is used for sealing an annular space between a wellhead sealing body and a petroleum pipe, at least one annular groove is formed in the inner wall surface of the sealing body, and the sealing body is provided with an injection hole which is communicated to a centrifugal end of the annular groove; the petroleum wellhead annular space sealing device further comprises a sealing ring, a power ring, and an injection component, wherein the sealing ring is embedded into the annular groove, the sealing ring is used for sealing the groove in the radial direction by being jointed to the wall surface of the annular groove, and is used for sealing the annular space by being jointed to the outer wall of the petroleum pipe, the power ring is installed in the annular groove and is located between the groove bottom of the annular groove and the sealing ring, and the injection component is installed in an inlet of the injection hole, and is used for injecting fluid with given pressure so as to make the power ring push the sealing ring to tightly press the petroleum pipe. In the petroleum wellhead annular space sealing device, the requirement for deformation capability of a sealing part is low, and meanwhile the sealing capability can be effectively improved.

The invention provides a high temperature-resistant composite inorganic binder, as well as a preparation method and an application thereof. The binder is a waterborne binder containing aluminum dihydrogen phosphate, zirconium sol and water. The binder comprises the following components in percentage by weight: 10-70% of aluminum dihydrogen phosphate, 10-80% of zirconium sol and 0-80% of water. The preparation method comprises the following steps: weighing the aluminum dihydrogen phosphate, the zirconium sol and the water according to the proportion, uniformly mixing under the conditions that the temperature is 20 DEG C-100 DEG C and the stirring speed is 200rpm-1000rpm, cooling and then obtaining the required high temperature-resistant composite inorganic binder. The binder has excellent high temperature resistance and can withstand the temperature of 2000 DEG C for a long time. The high temperature-resistant composite inorganic binder can be used for high temperature-resistant materials, ceramic coatings, fireproof materials, ceramic materials, high-temperature kiln repair materials, refractory materials, flame-retardant materials, high temperature-resistant adhesives and the like.

The invention discloses a 420 MPa weatherproof bridge steel with high ductility, which is characterized by comprising the following chemical compositions in percentage by weight: 0.015-0.045% of carbon, 0.20-0.35% of silicon, 1.20-1.50% of manganese, less than or equal to 0.018% of phosphorus, less than 0.0005% of sulfur, 0.030-0.050% of niobium, 0.010-0.020% of titanium, 0.015-0.040% of aluminum, 0.25-0.40% of nickel, 0.25-0.50% of chromium, 0.25-0.40% of copper, 0.0002-0.003% of B, less than or equal to 0.006% of nitrogen, less than or equal to 0.002% of oxygen, and the balance of ferrum and trace impurities. The rolled coil of the 420 MPa weatherproof bridge steel with high ductility has the advantages of good intensity, ductility, weldability, corrosion resisting property, and proper production cost.

The invention relates to a strong-pressure resisting water-based insulting paint for electric steel and a preparation method thereof. The strong-pressure resisting water-based insulting paint can be prepared by the following steps of: mixing 10-40 percent by weight of water-borne acrylic resin, 2-20 percent by weight of water-borne amine resin, 30-60 percent by weight of pigment, 0-10 percent by weight of addition agent, 0.1-5 percent by weight of catalyst, 0-5 percent by weight of corrosion inhibitor and 1-30 percent by weight of deionized water; and grinding the mixture in a sand mill until the fineness is below 15 micrometers and packaging. The components have no chromate and toxic and harmful ingredients, so that the strong-pressure resisting water-based insulting paint is environment-friendly; the prepared paint is coated on the surface of the electric steel and forms a protective layer with strong adhesion performance after being subjected to high-temperature braking and curing; and the protective layer has the advantages of very high surface resistivity, excellent corrosion resistance and very high strong pressure resistance and creep resistance.

The invention discloses an MIM manufacturing process for non-magnetic 17-4P stainless steel parts. The MIM manufacturing process comprises the following steps: putting a 17-4PH stainless steel powder and a binder into a kneading machine for mixing; cooling to a room temperature and then crushing by using a crusher, and then extruding a crushed material for pelletizing in an injection molding machine; processing a prepared feeding material in the injection molding machine into blanks; then catalyzing, debinding and removing polyformaldehyde from the injection blanks in a catalytic debinding furnace; putting well catalyzed and debound blanks into a vacuum furnace for debinding and sintering; and carrying out solution treatment on well sintered parts in a shielding gas protected continuous furnace or the vacuum furnace. The MIM manufacturing process provided by the invention adopts an MIM process and uses a 17-4PH powder sintered through nitrogen, and then the non-magnetic MIM metal parts with good compactness and corrosion resistance, and high tensile strength and yield can be obtained after solution treatment.

The invention discloses a self-lubricating passivation solution and a hot galvanizing self-lubricating coating steel sheet coated thereby. The self-lubricating passivation solution is formed by modified solid lubricants, a film forming matter, a film forming additive, an accelerant, a pH modifier, an organic solvent and deionized water through compounding. The solid content after compounding is 15-25%, and the modified solid lubricants are modified nanometer MoS2 and modified nanometer teflon particles. According to the total weight of 1000g, the self-lubricating passivation solution comprises the following components: 10-20g/kg of modified nanometer MoS2, 10-20g/kg of modified nanometer teflon particles, 80-120g/kg of film forming matter, 10-30g/kg of film forming additive, 5-15g/kg of the accelerant and the balance of mixed solution of the organic solvent and the deionized water; and the pH value is adjusted to 3-6 by the pH modifier. The hot galvanizing self-lubricating coating steel sheet coated by the self-lubricating passivation solution comprises a hot galvanizing substrate and a self-lubricating coating attached to the hot galvanizing substrate. The self-lubricating passivation solution does not contain Cr<6+> and other environmentally harmful substances and has environmental protection property, corrosion resistance, wear extreme pressure resistance as well as coating and self-lubrication properties.

The invention relates to a lubricant composition and application thereof. The lubricant composition is prepared from, by weight, 80-98% of mineral oil, 0.5-10.0% of purification dispersant, 0.5-2.0% of extreme pressure agent, 0.1-1.0% of pour point depressant, 0.1-0.5% of phosphorus anti-wear agent, 0.1-0.5% of antioxidant, 0.1-0.5% of metal deactivator, 0.01-0.2% of friction modifier, 0.01-0.1% of antirust agent and 0.001-0.05% of anti-foaming agent. The lubricant composition can be used for lubricating during cold heading forming and machining.

The invention relates to a protective material with high barrier property and a method of preparation of the material. The protective material is composed of an anti-tear layer, an adhesive layer, a high barrier layer, and a seal layer from outer to inner successively, wherein, the high barrier layer can prevent biochemical toxic agent and toxic gas from passing and has the function of corrosion resistance; the seal layer is made of film materials with better thermal stability and mechanical strength, and has the protective effect for high barrier layer; the adhesive layer can mainly increase the binding force between fabric and barrier film, and prevent delamination; the anti-tear layer is made of fabric which is flame retardant or non-flame retardant and can increase the anti-tear function of the composite layer and strength force of all directions of the composite material. The layers are adhered together by adhesive, and then made into protective materials with high barrier property which has multilayer and various protective functions. The protective material has the advantages of excellent anti-tear property, excellent corrosion resistance, and light weight, which can be used for emergency rescue clothing, biochemical protective clothing, risk chemical dealer protective clothing, missile and rocket inflowing protective clothing, etc.

The present invention relates to the preparation process of dry vibrating material for middle ladle. The dry vibrating material is prepared with magnesite or forsterite in 85-97 wt% and sodium metasilicate in 3-15 wt%, and through mixing, vibration forming, stoving at 100-400 deg.c and demolding. The magnesite or forsterite is graded with 0.088-2 mm components in 80-90 wt% and 0.088 mm below components in 10-20 wt%. The present invention adopts non-toxic, smell-less and harmless sodium metasilicate as bonder, so that the dry vibrating material may be low temperature smelted during the stoving process to polymerize constantly to raise strength. The dry vibrating material has no carbon increment to the molten steel, high corrosion resistance, easy degradation and environment friendship.

The invention discloses a preparation method of nanometer Zn crystal boundary modified sintered NdFeB magnet with high corrosion resistance, comprising the following steps: 1) main-phase alloy and crystal boundary phase alloy are respectively prepared, wherein, the main-phase alloy adopts casting technology or rapid hardening melt-spun technology to prepare a cast ingot or a rapid hardening thin strip, and the crystal boundary phase alloy adopts rapid quenching technology to prepare a rapid quenching strip; 2) the prepared main-phase alloy and crystal boundary phase alloy are respectively prepared into powder; 3) nanometer Zn powder is mixed with the crystal boundary phase alloy powder to evenly disperse the mixture on the crystal boundary phase alloy powder surface; 4) after nanometer Zn modified crystal phase alloy powder is evenly mixed with the main-phase alloy powder, orientation compression in a magnetic field is prepared into a green body; 5) the green body is sintered in a high vacuum sintering furnace and tempered to prepare the final magnet. The sintered NdFeB magnet prepared by the method of the invention has high performance, favourable corrosion resistance, simple technology and simple operation, and is favourable for batch production on large scale.

The invention relates to an air-permeability aluminum foil and a preparation method thereof, wherein the aluminum foil is mainly suitable for air-permeability packaging in requirements of agricultural production and daily life. The aluminum foil is characterized by being made of 3003 alloy, the thickness of the aluminum foil is 0.03-0.05 mm, pinholes which can reach more than 10,000 every square meter are densely distributed on the surface of the aluminum foil, and the maximum diameter of each pinhole is not more than 0.05 mm. The preparation method comprises the following process steps: batching, smelting, cast-rolling, cold-rolling, interannealing, cold-rolling, and foil-rolling to reach the finished thickness, slitting into a finished specification, and finished annealing. The invention has the advantages of good air permeability, strong corrosion resistance and strong oxidation resistance.

The invention belongs to the technical field of magnesium alloy surface treatment, and relates to a process for preparing green ceramic membrane by micro-arc oxidation of a rare earth magnesium alloy. Using oil removaling, cleaning, washing, micro-arc oxidation coloring, hole sealing and drying for the surface of the rare earth magnesium alloy, thereby obtaining a series of ceramic membranes whose color are uniform and are from light green, medium green to dark green and are oxidized by micro-arc of SJDM-1 rare earth magnesium alloy. The ceramic membrane which is prerared through the process has an excellent wear resistance and hardness, at the same time the machinability of the ceramic membrane is further guaranteed, and the ceramic membrane has the characteristics of uniform colors, color diversity and the like.

The invention discloses a production process of an inner formation storage battery, and belongs to the field of a lead-acid storage battery, and solves the easily occurring welding quality problem of a bus-bar and a lug. The process comprises the following steps of loading a plate group into an assembling box, arranging a lug, cutting and brushing the lug, dipping soldering flux, cast welding, inspecting and qualification and down-conversion, wherein the cast welding flow is carried out by adopting a cast welding machine. The cast welding flow comprises the following steps of (1) heating a lead pot; (2) loading a mold and preheating the mold; (3) scraping the lead liquid; (4) cast welding the plate group; (5) cooling the plate group through water; (6) cooling the plate group collectively through water and air; (7) cooling the plate group through the air; (8) loading the mold and preheating the mold again; and (9) loading the plate group into a tank. The production process is suitable for the cast welding of the inner formation storage battery with positive grid alloy being lead calcium tin aluminum or lead calcium alloy series grid.

The invention relates to an aluminum alloy and the manufacturing method, which particularly relates to aluminum alloy for air-conditioning ducts and the manufacturing method. The invention mainly aims at the problem of the existing technique which has the disadvantages of bad property of iron air-conditioning duct and over-high cost of copper air-conditioning ducts and the like, which provides an aluminum alloy for air-conditioning ducts which has the advantages of excellent corrosion resisting property, high tensile strength and high percentage of elongation and the manufacturing method. The proposition of components of the invention comprises 0.7wt%-0.9wt%Mn,0.1wt%-0.4wt%Si,0.2wt%-0.7wt%Fe, 0.05wt%-0.6wt%Mg, Zn<=0.2wt%, 0.05wt%-0.25wt%Cu, Ti<=0.2wt%, 0.01wt%-0.2wt%Sc, 0.01wt%-0.1wt%Zr, 0.05wt%-0.2wt%RE, and others are Al.

The invention relates to argentiferous gold-simulating copper alloy and a preparation method thereof and belongs to the technical field of alloy materials. The argentiferous gold-simulating copper alloy aims to solve the technical problems of poor color change resistance and gold-simulating effect of copper alloy in the prior art, and mainly comprises, by weight, 1%-20% of Ag, 0.5%-40% of Zn, not more than 1% of Si, not more than 1% of RE, 0.4-5.0% of color matching agents and the balance Cu. The preparation method includes: melting the raw materials at the temperature of 1200-1300 DEG C, performing annealing treatment at the temperature of 500-600 DEG C, forging and performing hot rolling so that the argentiferous gold-simulating copper alloy is obtained. The argentiferous gold-simulating copper alloy is high in color change resistance and good in gold-simulating effect and has the advantages of capability of achieving apparent color and luster of 14K-18K gold, simple technical process, good processability and easiness in processing.

The invention relates to a laser weld-bonding method of bipolar plates of a fuel cell. The method combines a bonding process and a laser welding process to connect the bipolar plates of the fuel cell, namely a normal-temperature curing adhesive is used to bond welding areas of the bipolar plates of the fuel cell, and then the laser welding is carried out to finish the connection of the bipolar plates of the fuel cell. Compared with the prior art, the laser weld-bonding method has the advantages that: because an adhesive bonding method is adopted to bond the bipolar plates of the fuel cell tightly, the phenomenas of sealing-off and welding seam breakage caused by assembling gaps in the laser welding are eliminated, the laser welding quality is improved, and the welding seam is high in mechanical strength and is corrosion resistant; a bond layer can evaporate rapidly under the high-heat input of a laser beam, the requirement of the bonding position is reduced; because the normal-temperature curing adhesive is adopted, the secondary heat input caused by high-temperature curing is avoided; and due to the introduction of the bonding process, the designs of a welding clamp, a welding path and welding parameters can be more flexible and simpler, so that the laser weld-bonding method is easy in large-scale production.

The invention belongs to the magnesium alloy surface treatment technical field, mainly relating to the following steps that: colouring additive metal cation Cu<2+> undergoes ammonia water complexation so as to generate Cu(NH3)2<2+> which is added in alkaline basic electrolyte with sodium silicate as main salt; and electrical parameters adapted to the electrolyte are set to simultaneously carry out micro-arc oxidation and colouring of magnesium alloy, thereby making a series of bottle-green ceramic membranes with excellent corrosion resistance and stable color and luster. Different electrolytes have different coloring effects on a film, and the luster of an oxide film is mainly determined by the metal oxide formed in the oxide film and the structure of the salt of the metal oxide.

The invention discloses a test device for testing horizontal and vertical saturated infiltration coefficients of coarse-grained soil simultaneously indoors under different pressure. The device comprises a loading system, a water supply system, a soil sample chamber and a pressure measurement system, wherein the loading system comprises a reaction frame, a pressure adjusting valve, a gas-pressure meter and a double-layer loading plate; the double-layer loading plate is a hollow hexahedron and comprises an upper-layer porous plate, a lower-layer porous plate, a middle partition board and a sideinclined plate; the water supply system comprises a water supply tank, a water storage tank, a vertical water supply cavity formed by the double-layer loading plate, a left horizontal water supply cavity and a right horizontal water supply cavity; each of the left horizontal water supply cavity and the right horizontal water supply cavity is formed by an outer porous plate, an inner porous plate and a silicon base plate filling a gap between the two porous plates. The horizontal and vertical saturated infiltration coefficients of the same sample are simultaneously tested under different pressures, the test device is not required to be dismounted in the testing process, the test device is convenient to operate, and the testing efficiency and accuracy are greatly improved.

An aspect of a ferritic stainless steel contains, by mass %: C: 0.03% or less; N: 0.03% or less; Si: more than 0.1% to 1% or less; Mn: 0.02% to 1.2%; Cr: 15% to 23%; Al: 0.002% to 0.5%; and either one or both of Nb and Ti, with the remainder being Fe and unavoidable impurities, wherein Expression (1) and Expression (2) illustrated below are satisfied, an oxide film is formed on a surface thereof, and the oxide film contains Cr, Si, Nb, Ti and Al in a total cationic fraction of 30% or more,

8(C+N)+0.03≦Nb+Ti≦0.6  (1)

Si+Cr+Al+{Nb+Ti−8(C+N)}≧15.5  (2).

The invention provides stainless steel with low cost, high strength and high corrosion resistance and a preparation method thereof. The stainless steel comprises the following components of, in percentage by mass, 1.0%-6.0% of Co, 6.0%-9.0% of Ni, 9.0%-14.0% of Cr, 0.3%-1.5% of Ti, 4.0% to 7.0% of Mo, 0.08%-1.0% of Mn, 0.08%-0.2% of Si, less than or equal to 0.05% of C, less than or equal to 0.035% of P, less than or equal to 0.030% of S and the balance Fe. The method comprises the following steps of smelting and casting stainless steel; forging or hot rolling cogging; and heat treatment. The tensile strength of the stainless steel can reach 2150 MPa or above, the ductility of the stainless steel is 17% or above, and the spot corrosion potential Epit of the stainless steel is greater than 0.36 VSCE; and the stainless steel with low cost, high strength and high corrosion resistance can be used for key structures of ships, oceanographic engineering, aerospace engineering and the like.

The invention relates to a ferritic stainless steel which comprises the following chemical components in percent by weight: 0.001-0.025% of C, less than1.0% of Si, less than 1.0% of Mn, less than 0.03% of P, less than 0.010% of S, 17-20% of Cr, 1.70-2.00% of Mo, less than 0.02% of Al, 0.005-0.025% of N, less than 0.0100% of O, less than 0.2% of Nb, 0.10-0.15% of V, less than 0.5% of Ni and the balance of Fe and inevitable impurities. A method for manufacturing the ferritic stainless steel comprises the following steps: smelting by using a vacuum induction furnace, or by using an electric arc furnace through external refining or by using a converter through external refining; continuously casting, wherein the degree of superheat is controlled at 30-50 DEG C, and the slab pulling speed is controlled at 0.8-2m/min; pouring at 1,580-1,600 DEG C; heating the continuously-cast billet to 1,050-1,100 DEG C, and hot rolling, wherein the finish rolling temperature is 800-900 DEG C, and the hot rolling reduction is more that 90%; cooling in air; continuously annealing the hot-rolled strip steel, and pickling, wherein the annealing temperature is 950-1,050 DEG C, the temperature is preserved for 1-1.5t min, and the t represents the thickness (mm) of the strip steel. The ferritic stainless steel has excellent impact toughness, corrosion resistance and mechanical properties.

The invention discloses a zirconium-tin-niobium corrosion-resistant zirconium-base alloy for nuclear fuel cans, which comprises the following components in percentage by mass: 0.6-1.4% of Sn, 0.10-1.5% of Nb, 0.1-0.5% of Fe, 0.02-0.3% of Cr, 0.005-0.5% of MgO, 0-0.5% of CeO2, 0-0.5% of Y2O3, 0-0.015% of SiO2, 0-0.03% of V2O3, 0.07-0.15% of O, and balance of Zr and inevitable impurities. Compared with the prior Zr-4 alloy, the zirconium-base alloy of the invention has better high temperature creep resistance and excellent corrosion resistance, and is suitable for can materials, grids and other structural members for reactor fuel rods in a nuclear power station.

The invention discloses a two-phase stainless steel alloy and a preparation method thereof. The two-phase stainless steel alloy is composed of the following chemical components in percentage by mass: 0.01-0.03 percent of C, 0.1-2.0 percent of Si, 1.0-3.0 percent of Mn, 20-22 percent of Cr, 1.7-2.5 percent of Ni, 0.7-1.0 percent of Cu, 0.1-0.2 percent of N, 0.2-1.0 percent of W, as well as Fe and unavoidable impurity elements in balancing amount. According to the invention, the two-phase stainless steel has good performance of mechanics, hot working performance and high corrosion resistance, and can be manufactured by the prior art. The adopted low-cost N and Mn substitute Ni to stabilize the Austenite phase of the two-phase stainless steel, and the low-cost W substitutes Mo, so that the cost is lowered; and meanwhile, the lower content of the element M is controlled via reasonably regulating the mixture ratio of the elements Ni, N and Mn, a situation that low-melting-point sulphides exist at a phase boundary is avoided, and the hot working performance of the two-phase stainless steel is effectively ameliorated.

The invention provides a preparation method of a ZrO2/Al2O3 composite membrane on surfaces of aluminium and aluminium alloy. The method comprises the following steps that 1, water-soluble zircon salt, sodium dihydrogen phosphate, glycerol, disodium edetate, sodium citrate and deionized water are mixed; a zircon salt system solution is prepared; and 2, the zircon salt system solution is placed in a microarc oxidation treatment tank as a microarc oxidation electrolyte; aluminium or an aluminium alloy serves as an anode; a stainless steel plate serves as a cathode; microarc oxidation treatment is conducted; and then the uniform and dense ZrO2/Al2O3 composite membrane is obtained on the surface of aluminium or the aluminium alloy. The ZrO2/Al2O3 composite ceramic membrane prepared by the method has neutral NaCl salt mist corrosion resistance above 500h, and microhardness above 950Hv. The method has no special requirements on materials, shapes, dimensions and the like of aluminium or the aluminium alloy, and has wide applicability.

A brazing filler metal with excellent wetting behaviour on stainless steel base material is provided. The brazing filler metal produces a brazed joint with high strength and good corrosion resistance. The brazing filler metal is suitable for brazing stainless steel and other materials where corrosion resistance and high strength is required. Typical examples of applications are heat exchangers and catalytic converters.

The iron-chromium based brazing filler metal powder comprises:

• 11-35 wt % chromium,
• 0-30 wt % nickel,
• 2-20 wt % copper,
• 2-10 wt % silicon,
• 4-10 wt % phosphorous,
• 0-10 wt % manganese,
• and at least 20 wt % iron, and
• if Si is equal to or less than 6 wt % then P should be above 8 wt %, and
• if P is less or equal to 8 wt % then Si should be above 6 wt %.

An insert for construction supports such as joist hangars and hurricane straps provides corrosion protection from chemicals and moisture in exterior construction lumber. The insert is a semi-rigid body having a shape that fits the construction support so that surfaces of the insert are disposed between the support and the construction lumber at joints in the construction. In the preferred embodiments, the inserts are made of a plastic material and provide a chemical, moisture and electrical barrier between the support and exterior lumber elements of a structure.

The invention relates to a preparation method of a stainless steel-resin composite and a stainless steel-resin composite prepared by the same. The preparation method comprises the following steps: S1. coating an ink on the surface of a pretreated stainless steel substrate in need of combining resin to obtain a stainless steel substrate of which part of surface is coated with an ink layer; S2. carrying out oxidization and passivation on the stainless steel substrate of which part of surface is coated with an ink layer, which is obtained in the step S1; S3. removing the ink layer coated on the surface of the stainless steel substrate obtained in the step S2; S4. putting the stainless steel substrate obtained in the step S3 into an acid and/or salt solution containing 2-30 wt% of A<-> to perform electrochemical corrosion, wherein A is halogen; and S5. carrying out injection molding on a resin composition onto the surface of the stainless steel substrate obtained in the step S4, and forming to obtain the stainless steel-resin composite. The prepared product has the advantages of strong binding force between stainless steel and resin, simple technique, no pollution and low cost, can easily implement large-scale production, and can not cause corrosion of the non-injection molding region of the stainless steel.

The invention discloses a method for preparing an aluminum film through electrodeposition of ionic liquid on the surface of an aluminum-based composite material. The method comprises the following steps of: preparing electrodeposition liquid from quaternary ammonium salts, pyridininium salts, anhydrous aluminum chloride, and an additive; and performing electrochemical activation under the protection of argon, and performing direct current electrodeposition in the electrodeposition liquid by taking the aluminum-based composite material as a cathode and pure aluminum as an anode to obtain the aluminum film on the surface of the composite material. By the method, the corrosion resistance of the surface of the composite material is improved, and the corrosion resistance of the electrodeposited aluminum film on the composite material is not lower than that of the electrodeposited aluminum film on a matrix alloy.

The present invention discloses an environmental protection ashing treatment process of calendaring copper foil. The environmental protection ashing treatment process comprises degreasing washing, roughening electroplating, curing electroplating, nickel alloy electroplating, zinc electroplating, chromate passivation treatment, silane treatment and the like. According to the present invention, after electrochemical degreasing, roughening and curing treatment (roughening and curing can be selected more than two times according to the requirement) Cu grain electrodeposition are performed on the calendaring copper foil, the nano-scale nickel alloy is electrodeposited under the acidic condition, the thin metal zinc layer is electroplated, and finally the chromate passivation treatment is performed and the silane coupling agent is uniformly sprayed on the surface; As, Sb, Cd and other toxic and harmful metals are not added, and the alloy system electrodeposition and other relatively simple processes are used to treat the process; and under the optimization of the process parameters, the environmentally friendly surface treated copper foil with characteristics of good performance, meeting of FPC production requirements, gray appearance of gray, no toxicity and no harm can be obtained.