WO2006126560A1 - 金属用化成処理液および処理方法 - Google Patents
金属用化成処理液および処理方法 Download PDFInfo
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- WO2006126560A1 WO2006126560A1 PCT/JP2006/310289 JP2006310289W WO2006126560A1 WO 2006126560 A1 WO2006126560 A1 WO 2006126560A1 JP 2006310289 W JP2006310289 W JP 2006310289W WO 2006126560 A1 WO2006126560 A1 WO 2006126560A1
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- zirconium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/46—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing oxalates
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/77—Controlling or regulating of the coating process
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
Definitions
- the present invention relates to a novel metal surface chemical conversion treatment liquid and surface chemical conversion treatment method for imparting excellent corrosion resistance and coating film adhesion to a metal surface.
- the chemical conversion treatment liquid of the present invention does not contain harmful hexavalent chromium and can impart high corrosion resistance to the metal surface.
- the chemical conversion treatment liquid of the present invention has high corrosion resistance to aluminum and aluminum alloy materials typified by aluminum die cast materials, zinc and zinc alloy materials typified by zinc die cast materials, and zinc-plated metal materials. Can be granted. Furthermore, there is little generation of sludge (precipitate) in the treatment liquid and the environmental load is small. Background art
- Chemical treatment has long been used for the purpose of imparting corrosion resistance and paint adhesion for metals.
- chemical conversion treatment of an aluminum-based material to which the present invention is suitable will be described.
- surface treatment liquids for aluminum or aluminum alloy materials can be broadly classified into chrome type and non-chromate type.
- Typical examples of the chromate type treatment liquid include a chromate chromate chemical conversion treatment liquid and a phosphoric acid chromate chemical conversion treatment liquid.
- Chromate chromate conversion treatment solution was put into practical use around 1950 and is still widely used for surface treatment of aircraft materials, building materials, and automotive parts.
- This chromate chromate conversion treatment solution is a chromic acid and reaction accelerator.
- As a main component a chemical conversion film containing hexavalent chromium is formed on the surface of the metal material.
- the phosphoric acid chromate conversion treatment solution is based on the invention disclosed in US Pat. No. 2,443,877 (Patent Document 1), and contains chromic acid, phosphoric acid and hydrofluoric acid as main components. Then, a chemical conversion film composed mainly of hydrated chromium phosphate is formed on the surface of the metal material. Since this chemical film does not contain hexavalent chromium, it is still widely used for coating base treatment of beverage can lids.
- Non-chromate type surface treatment solution containing no chromium
- This surface treatment solution is an acidic aqueous coating solution containing zirconium or titanium or a mixture thereof, phosphoric acid and fluoride, and having a pH of about 1.5 to 4.0.
- This surface treatment liquid has the advantage of not containing hexavalent chromium, and is actually widely used for the surface treatment of aluminum DI cans used in beverage cans such as beer.
- it is a category of non-chromium chemicals called zirconium-based or titanium-based.
- Patent Document 3 On the surface of aluminum, magnesium and its alloys, one or more of titanium or zirconium salts and one or more of imidazole derivatives, nitric acid, hydrogen peroxide, permanganate Surface treatment is performed using an aqueous solution containing an oxidizing agent.
- the oxidizing agent promotes the precipitation of titanium and zirconium. It is in the category of improvement technology for non-chromium chemicals called Zirconium or Titanium.
- Non-chromate type treatment liquids further include those disclosed in the following patent publications.
- Japanese Patent Application Laid-Open No. Sho 5 6-1 3 6 9 78 contains a vanadium compound and at least one compound selected from the group consisting of a titanium salt, a zirconium salt and a zinc salt.
- a chemical conversion treatment liquid characterized by comprising an aqueous solution containing the same. This is a composite of vanadium and zirconium and titanium.
- Patent Document 5 contains at least one compound selected from a metal acetacetonate, a water-soluble inorganic titanium compound and a water-soluble inorganic zirconium compound.
- An acidic metal surface treatment solution is disclosed. This treatment liquid uses vanadyl acetate, zirconium acetate, zinc acetate or the like, and is a composite of metal acetate with zirconium and titanium.
- Patent Document 6 discloses that one or two ions selected from the group consisting of tungstate ion and molybdate ion are 0.1 to 3.0 g nos. 1, 6 PH 1.0 containing 0.5 to 4.0 g / 1> phosphate ion 5.0 to 30 0. O g Z l and free fluorine ion 0.05 to 2.0 g ⁇ 3.0 Chromate treatment solution is heated to 40 ⁇ 60 ° C to obtain clean aluminum surface.
- an aluminum surface treatment method has been devised, which comprises spraying the surface of an aluminum alloy for 0.5 to 3 seconds. It is in a category called evening-based or molybdenum-based.
- Patent Document 7 discloses that 0.0 1 to 5 O g / L of permanganic acid or a salt thereof and 0.0 1 to 20 g / L of A surface for a light metal or light alloy material characterized in that it contains at least one compound selected from a permanent solution and a water-soluble zirconium compound and has a pH of 1.0 to 7.0.
- a processing solution is being considered. It is in a category called manganese-titanium or manganese-zirconium series. '
- Patent Document 8 describes hexanoic acid ions, Ti, V, M n, Fe, Co, Zr, Mo and A highly corrosion-resistant chromium-free chemical conversion coating agent for aluminum and aluminum alloys is described which contains one or more metal ions selected from the group consisting of W and does not contain chromium ions. Elements other than cobalt are the elements mentioned in the above invention. The scope of claims is wide, and novelty of past inventions is scarce.
- a coating formed by surface treatment on a metal surface includes a plurality of metal elements, and includes at least one of the above metals.
- a chromium-free metal surface treatment composition has been devised in which the element has a plurality of valences.
- the metal elements are Mg, A1, Ti, V, ⁇ , Fe, C ⁇ , ⁇ i, Cu, ⁇ , Sr, ⁇ b, ⁇ , ⁇ r, ⁇ ⁇ , I ⁇ , S ⁇ , ⁇ a, W is a chrome-free metal surface treatment composition characterized by at least two types, but the claim is too wide and the actual treatment method is unsatisfactory. It is clear and novel compared to past inventions. Conventional zirconium-based, titanium-based, vanadium-based, evening It is considered to be an extension of the stainless, molybdenum, and manganese series.
- Patent Document 10 includes (1) H f (IV), T i Compound (A) containing at least one metal element selected from (IV) and Zr (IV), (2) Fluorine at least 5 times the total molar concentration of the metals contained in Compound A above A sufficient amount of fluorine-containing compounds to be present in the material, (3) at least one metal ion B selected from the group of alkaline earth metals, (4) A 1, Zn, Mg, Mn and Cu A composition for surface treatment of aluminum, aluminum alloy, magnesium or magnesium alloy has been devised, which contains at least one metal ion C selected from: (5) nitrate ion. If this treatment liquid is also broadly understood, it is on the extension line of zirconium system and titanium system.
- Patent Document 11 includes a water-soluble zirconium compound and / or a water-soluble titanium compound (1) and an organic phosphonic acid compound (2).
- a non-chromium metal surface comprising: a step (A) for treating a treatment object with a non-chromium metal surface treatment agent; and a step (B) for treating the treatment object subjected to the step (A) with an aqueous solution of tannin (3)
- the content of the water-soluble zirconium compound and the water-soluble titanium compound (1) is 40 to 100 ppm on a mass basis as the amount of zirconium, Z or titanium.
- the content of the organic phosphonic acid compound (2) is 20 to 500 ppm on a mass basis, and the non-chromium metal surface treatment agent has a pH force s 1.6 to 4.0,
- the content of the tannin (3) in the aqueous solution is from 400 to 400 on a mass basis.
- a non-chromium metal surface treatment method has been devised which is characterized by being 100 ppm. In a broad sense, this treatment liquid is on the extension line of zirconium and titanium.
- Patent Document 1 2 includes a water-soluble zirconium compound and / or a water-soluble titanium compound (1) and an organic phosphonic acid compound (2).
- a non-chromium metal surface comprising: a step (A) for treating a treatment object with a non-chromium metal surface treatment agent; and a step (B) for treating the treatment object subjected to the step (A) with an aqueous solution of tannin (3).
- the organic phosphonic acid compound (2) is a method in which a phosphorus atom constituting a phosphonic group is bonded to a carbon atom, and the water-soluble zirconium compound and the water-soluble titanium compound
- the content of (1) is 20 to 800 ppm on the mass basis as the amount of zirconium and Z or titanium, and the content of the organic phosphonic acid compound (2) is 10 to 50 on the mass basis.
- the non-chromium metal surface treatment agent has a pH of 1.6 to 4.0, and the thermoplastic polyester resin-coated metal plate has a tannin concentration of 300 to 800 ppm on a mass basis.
- a non-chromium metal surface treatment method has been devised, which is characterized in that it is used in the manufacture of steel. As before, it is on the extension line of zirconium and titanium.
- Patent Document 1 3 Japanese Patent Application Publication No. 1 1 7 2 4 0 6 (Patent Document 1 4), Japanese Patent Application Laid-Open No. 1 — 1 7 7 3 79 (Patent Document 1 5) Japanese Laid-Open Patent Publication No. 7 3 80 (Patent Document 16), Japanese Patent Laid-Open No. 2-6008 (Patent Document 17) and Japanese Patent Laid-Open No. 2-609 (Patent Document 18) are disclosed. .
- Patent Document 1 Japanese Patent Application Laid-Open No.
- Patent Document 20 includes a zirconium compound, a fluorine ion, a water-soluble resin, and an aluminum salt, and the concentration of the zirconium compound is Zirconium conversion: 100 to 100 ppm, the fluorine ion concentration is 125 to 125, and the non-volatile content of the water-soluble resin is 100 ppm to 10 0 0 0 ⁇ ⁇ The aluminum salt concentration is 1 0 ⁇ !
- a non-chromium anti-fouling agent for aluminum is devised, characterized by ⁇ 1 0 0 0 0 ppm. This is also a combination of the aforementioned resin and zirconium.
- Patent Document 2 1 is selected from an acid ion (A) having an acid group containing phosphorus, a trivalent chromium ion, and a compound ion having a trivalent chromium.
- a hexavalent chromium-free chemical conversion surface treatment agent for aluminum alloys belongs to a category called trivalent chromium.
- Patent Document 2 2 2 discloses that a base material made of aluminum or an aluminum alloy is used with an acidic aqueous solution at 10 to 70 ° C. for 5 seconds to The chemical conversion treatment agent used after the treatment for 5 minutes, wherein the acidic aqueous solution is selected from the group consisting of (a) a metal salt selected from Fe, Ni, Co, Mo, and Ce and a metal acid salt.
- At least one kind is 0.0 1 to 5% by mass of the acidic aqueous solution, and (b) ⁇ an acidic aqueous solution containing an inorganic acid and having a pH of 2 or less, (C) Zr and No or Ti are 0.001 to 1% by mass of the chemical conversion treatment agent, and (d) trivalent chromium ions or salts thereof are 0.1 to 10% of the chemical conversion treatment agent.
- a chemical conversion treatment agent has been devised that contains 0 ppm and (e) a fluoride. Basically, it imitates the above-mentioned Patent No. 3 3 3 3 6 1 1 and is not novel, but it belongs to the trivalent chromium system as component II.
- Patent Document 2 3 Japanese Patent Application Laid-Open Publication No. 2 0 4 0-1 0 9 3 7
- Patent Document 2 3 includes (A) trivalent chromium ion, (B) Mo, W, Ti, Zr, Mn, Tc, Fe, Ru, Co, alkaline earth metal, Ni, Pd, Pt, Sc, Y, V, Nb, Ta, Cu, Ag, 'Au At least one of the group, (C) one or more of the group consisting of chlorine, fluorine, sulfate ion, nitrate ion, and (D) phosphorus oxyacid, oxyacid salt, anhydrous, phosphorus compound
- a method for forming a colored anti-fouling film has been devised, wherein the anti-fouling film is formed from a liquid composition containing at least one member of the group consisting of:
- This invention basically also includes the above-mentioned patent No. 3 3 3 3 6
- Patent Document 24 discloses a chemical film that does not contain hexavalent chromium and provides at least corrosion resistance by yellow chromate treatment containing hexavalent chromium.
- the metal surface is treated with a solution of at least one trivalent chromium chelate complex, and the trivalent chromium of the chelate complex in the solution has a concentration of 5 to lOOgZl.
- a method has been devised in which the trivalent chromium chelate complex has a faster ligand substitution rate than the fluoride substitution rate in the trivalent chromium monofluoro complex.
- this invention also has a problem in novelty, it belongs to the trivalent chromium system as a classification.
- Patent Document 2 5 describes a substantially coherent conversion layer of hexavalent chromium and trivalent chromium on zinc or a zinc alloy, In salt spray tests according to DIN 5 0 0 2 1 SS or AS TM B 1 1 7-7 3 in the absence of further components such as silicates, cerium, aluminum and phosphates, 'Providing corrosion protection of about 1 0 to 100 hours until the first erosion according to DIN 5 0 9 6 1 Chapter 1 0, and being clear, transparent and essentially colorless, Exhibiting multi-colored gloss, having a layer thickness of about 100 to 100 nm, being hard and having good adhesion, and being resistant to wiping.
- the invention relates to a trivalent chromium film relating to a coating on zinc called a characteristic conversion layer.
- the zirconium series belonging to (1) exhibits sufficient performance in applications such as painting base applications, cold rolled materials with a uniform aluminum surface, and applications where the requirements for corrosion resistance are not strict. Industrialization has also been made.
- these coatings are formed on coatings with non-uniform surface properties, such as aluminum die-cast materials (a large number of surface segregated materials, non-uniformly thick aluminum oxide coatings, etc.) In applications where bare specifications are not used, the corrosion resistance is actually inferior to that of chromate films.
- the corrosion resistance is the most excellent.
- the corrosion resistance may be sufficiently obtained, but there are some problems in the industry. is there.
- Japanese Patent No. 3 3 3 6 1 ⁇ (Permission Document 21) contains an acid ion having an acid group containing phosphorus. For this reason, when aluminum is treated continuously and aluminum is mixed into the processing solution, sludge of aluminum phosphate is formed. To prevent this, ⁇ must be lowered and controlled.
- Patent Document 2 2 2 00 0-3 3 2 5 75
- Patent Document 2 2 Japanese Laid-Open Patent Publication No. 20 0 4-0 1 0 9 3 7
- Patent Document 2 3 also has a problem of sludge generation because it contains a phosphorus compound. Further, in Japanese Patent No.
- trivalent chromium in the treatment solution contains 5 to 5
- the concentration is 1 0 0 g.
- This is a very high-concentration treatment solution, and there are problems such as high costs in actual industrialization and high load on subsequent washing water (rinsing the treatment solution in the previous process).
- a film is defined, and the film thickness is 10 0 ⁇ ! ⁇ 1 0 0 O nm and slightly thicker. In general, when the film thickness is increased, the corrosion resistance is improved, but the paint adhesion is deteriorated. In addition, a thick film means higher costs.
- the conventional non-chromate type surface treatment solution When used, the problem remains that the formed chemical conversion film has insufficient corrosion resistance.
- the formed chemical conversion film has insufficient corrosion resistance.
- it is used for aluminum die-casting materials used as materials for parts of aircraft, automobiles, and home appliances, and there is a problem that sufficient corrosion resistance cannot be exhibited in the case of bare specifications (the coating is not made with a chemical film alone).
- the trivalent chromium system has problems in industrial operation and processing costs.
- aluminum that does not contain hexavalent chromium in the treatment liquid is excellent in operability and economy, and can provide sufficient corrosion resistance to the bare specifications of the aluminum die cast material.
- chemical conversion treatment solutions and treatment methods for aluminum alloy materials have not been established.
- Patent Document 1 U.S. Patent No. 2 4 3 8 8 7 7
- Patent Document 2 JP 5 2 ⁇ 1 3 1 9 3 7
- Patent Document 3 Japanese Patent Application Laid-Open No. 5-7 ⁇ 4 1 3 7 6
- Patent Document 4 JP 5 6 1 3 6 9 7 8
- Patent Document 5 Japanese Patent Laid-Open No. 2 0 0 0 1 9 9 0 7 7
- Patent Document 6 Japanese Patent Laid-Open No. 5-585
- Patent Document 7 Japanese Patent Application Laid-Open No. 11-3 6 0 8 2
- Patent Document 8 Japanese Patent Laid-Open No. 2 0 0 4 1 2 3 2 0 4 7
- Patent Document 9 Japanese Patent Laid-Open No. 2 0 0 1 ⁇ 2 4 7 9 7 7.
- Patent Document 1 0 W O 0 3/0 7 4 7 6 1 A 1
- Patent Document 1 JP 2 0 0 3 ⁇ 3 1 3 6 7 9
- Patent Document 1 JP 2 0 0 3 1 3 1 3 6 8 1
- Patent Document 1 Japanese Patent Application Laid-Open No. 6 1-9 1 3 6 9
- Patent Document 1 Japanese Laid-Open Patent Publication No. 1- 1 7 2 4 0 6
- Patent Document 1 5 JP 1 1 7 7 3 7 9
- Patent Document 1 6 Japanese Patent Laid-Open No. 1 1 7 7 3 8 • 0 Patent Document 1 7 Japanese Patent Application Laid-Open No. 2 1 6 0 8
- Patent Document 1 Japanese Laid-Open Patent Publication No. 2 1 6 09
- Patent Document 1 Patent No. 2 7 7 1 1 1 0
- Patent Document 2 0 JP 2 0 0 1 ⁇ 3 0 3 2 6 7
- Patent Document 2 Patent No. 3 3 3 3 6 1 1
- Patent Document 2 Japanese Patent Laid-Open No. 2 0 0 0 ⁇ 3 3 2 5 7 5
- Patent Document 2 Japanese Unexamined Patent Publication No. 2 0 0 4 0 1 0 9 3 7
- Patent Document 2 4 Japanese Unexamined Patent Publication No. 2 0 0 4 3 0 1 9
- Patent Document 2 5 5 9 7 5 4 2 Disclosure of Invention
- the present invention is for solving the above-mentioned problems of the prior art, and specifically provides excellent corrosion resistance to the metal material surface.
- it when applied to aluminum die cast materials or zinc die cast materials, it is given bare corrosion resistance equivalent to chromate, has appropriate paint adhesion, and is industrially operated.
- an attempt is made to provide a chemical conversion treatment solution for metal materials and a chemical conversion treatment method that can control the generation of industrial waste such as sludge, can control the process easily, and is economically inexpensive.
- the present inventors diligently studied a means for solving the above-described problems of the prior art. As a result, it contains at least one compound selected from a specific water-soluble trivalent chromium compound, a specific water-soluble titanium compound and a water-soluble zirconium compound, a specific water-soluble nitrate compound, and a specific water-soluble aluminum compound. And 'more specific fluorination The present inventors have found an acidic aqueous solution containing a compound and having a pH controlled within a specific range, or a specific chemical conversion solution obtained by adding a specific oxidizing agent thereto.
- the chemical conversion solution for metal materials of the present invention comprises at least one component (A) composed of a water-soluble trivalent chromium compound and at least one component selected from a water-soluble titanium compound and a water-soluble zirconium compound ( B), a component (C) composed of at least one water-soluble nitrate compound, and a component (D) composed of at least one water-soluble aluminum compound, and at least one fluorine or more A treatment liquid containing a component (E) comprising a compound,
- the total content (CB) in terms of metal titanium and metal zirconium of the compound-containing component (B) is 0.1 to 1 O mmol / liter
- the cation-based content of the water-soluble nitrate compound-containing component (C) (CC) is 0.2 to 40 mmol / liter
- the fluorine equivalent content (CE) of the fluorine compound-containing component (E) is represented by the following formula:
- the surface treatment liquid further contains an oxidizing agent (F).
- the water-soluble trivalent chromium compound-containing component (A) preferably contains at least one selected from chromium nitrate, chromium sulfate, and chromium fluoride.
- the component (B) comprising the water-soluble titanium compound and / or water-soluble zirconium compound is composed of titanium sulfate, titanium oxysulfate, titanium ammonium sulfate, titanium nitrate, oxy Titanium nitrate, Titanium nitrate, Titanium sulfate, Titanium oxysulfate, Titanium sulfate ammonium, Titanium nitrate, Titanium nitrate Titanium nitrate, Titanium nitrate ammonium, Fluorotitanic acid, Fluoro titanium complex, Zirconium sulfate, Zirconium oxysulfate, Zirconium ammonium sulfate, zirconium nitrate, zirconium nitrate, zirconium nitrate ammonium, zirconium sulfate, zirconium zirconium sulfate, zirconium sulfate, zirconium sulfate
- the chemical conversion solution for metal material of the present invention contains the water-soluble nitrate compound-containing component (C) at least one selected from calcium nitrate, calcium nitrate, strontium nitrate, manganese nitrate, and cerium nitrate. Is preferred.
- the chemical conversion liquid for metal material of the present invention preferably contains at least one selected from the above-mentioned water-soluble aluminum compound-containing component (D) force aluminum nitrate, aluminum sulfate and aluminum fluoride.
- the fluorine compound-containing component (E), hydrofluoric acid, ammonium fluoride, chromium fluoride, fluorotitanic acid, fluorotitanium complex salt, fluorozirconic acid, fluorozirconium complex salt It is preferable to include at least one selected from magnesium fluoride and aluminum fluoride.
- the oxidizing agent (F) force does not contain at least one selected from a peroxo acid compound and a nitrous acid compound, and its content is 0.1 to 15 mmo 1 / It is preferred to be a little.
- the metal material is preferably selected from aluminum and aluminum alloy materials, zinc and zinc alloy materials, and zinc-plated metal materials.
- the method for chemical conversion treatment of the surface of a metal material according to the present invention is as follows. * The chemical conversion treatment solution for metal according to the present invention is heated to a temperature of 30 to 70 ° C. 0 0 seconds is contacted, and then washed with water the metal material surface, dried, the metallic material surface, 0. 0 2 ⁇ 1 mmo l Z m 2 of chromium, and 0. 0 2 ⁇ 1 nuiio l Z A chemical conversion film having a film thickness of 1 to 100 nm is formed, including m 2 of titanium and Z or zirconium. ' In the chemical conversion treatment method for a metal material surface according to the present invention, it is preferable to perform deionization cleaning on the water-washed metal material surface between the water washing and the drying.
- the clean metal material surface is oxidized by subjecting the surface of the metal material to deoxidizing treatment with a water solution containing an acid or a redox agent. It is preferable that the product has been removed.
- the metal material is preferably selected from aluminum and an aluminum alloy material, zinc and a zinc alloy material, and a zinc-plated metal material.
- the chemical conversion treatment method for the surface of the metal material of the present invention comprises at least one component (A) comprising at least one water-soluble trivalent chromium compound, and at least one selected from a water-soluble titanium compound and a water-soluble zirconium compound.
- the chemical conversion treatment solution for metal material further containing at least one component (E) composed of a fluorine compound is heated to a temperature of 30 to 70 ° C. to clean it.
- the composition of the chemical conversion treatment liquid is adjusted to have a metal chromium equivalent content (CA) of the water-soluble trivalent chromium compound-containing component (A) of 0.1 to 0.1 seconds.
- the water-soluble Titanium compound and / or water-soluble zirconium compound-containing component (B) metal titanium and metal zirconium equivalent total content (CB) force 0.1 ⁇ ;
- the fluorine equivalent content (CE) of the fluorine compound-containing component (E) is represented by the following formula:
- the pH of the chemical conversion solution is within the range of 2.3 to 5.0, thereby preventing the generation of sludge in the chemical conversion solution, and Forming a chemical conversion film having excellent corrosion resistance on the surface of the metal material, and then washing the metal material surface with water and drying, 0.02 to 1 mmol / m 2 of chromium on the metal material surface, And 0.02 to 1 mmol / m 2 of titanium and / or zirconium, and a chemical conversion film having a thickness of 1 to 10 O nm is formed.
- the clean metal material surface is oxidized by subjecting the surface of the metal material to a deoxidizing treatment with an aqueous treatment liquid having an acid or a redox agent. It is preferable that it has been removed.
- the clean metal material is preferably selected from aluminum and an aluminum alloy material, zinc and a zinc alloy material, and a zinc-plated metal material.
- the chemical conversion liquid for metal materials comprises a water-soluble trivalent chromium compound-containing component (A), a water-soluble titanium compound and / or a water-soluble zirconium compound-containing component (B), and a water-soluble nitrate compound-containing component.
- (C) a water-soluble aluminum compound-containing component
- the liquid further contains a fluorine compound component (E) comprising at least one fluorine compound, and It is an acidic aqueous solution whose pH is controlled in the range of 2.3 to 5.0, and the chemical conversion treatment liquid of the present invention may contain an oxidizing agent component (F).
- an oxidizing agent component F
- the water-soluble trivalent chromium compound-containing component (A) of the chemical conversion treatment solution for metals of the present invention is an essential component and greatly affects the corrosion resistance of the resulting chemical conversion metal material.
- at least one selected from chromium nitrate, chromium sulfate, and chromium fluoride can be used.
- the content of component (A), in terms of chromium conversion, is in the range of 0.1 to 2 OMiol nortre, preferably in the range of 0.4 to 4 mmol Zlitre. If the content of component (A) is less than 0.1 mmol Z liter, the chromium content in the resulting conversion coating will be insufficient. And when it exceeds 20 dragon olZ Costs are high and it is economically disadvantageous.
- the component (B) consisting of at least one compound selected from a water-soluble titanium compound and a water-soluble zirconium compound in the chemical conversion treatment solution for metals of the present invention is also an essential component, and the obtained chemical conversion treatment metal material Corrosion resistance is greatly affected.
- a water-soluble inorganic titanium compound and a water-soluble inorganic zirconium compound such as titanium sulfate, titanium oxide sulfate, ammonium sulfate ammonium, and nitric acid are used.
- the content of the component (B) is required to be within a range of 0.1 to 10 mmol mol of titanium or zirconium, preferably 0.4 to 4 It is a mmolZ liter. If the Ti and / or Zr equivalent content of component (B) is less than 0.1 mmol Z liter, the adhesion of zirconium or titanium will be insufficient. In addition, if it exceeds 1 O mmolZ, the concentration in the chemical conversion solution is high, which increases costs and is economically disadvantageous.
- the water-soluble nitrate compound-containing component (C) in the chemical conversion treatment solution for metals of the present invention is also an essential component and affects the uniformity of the formed film, affecting the final corrosion resistance.
- Component (C) has the effect of suppressing excessive etching at the chemical liquid / material interface during the treatment process, and it is considered that the film becomes uniform.
- at least one of magnesium nitrate, nitrate power, strontium nitrate, manganese nitrate, and cerium nitrate can be used.
- Content of water-soluble nitrate compound-containing component (C) in terms of chaotic content CC is in the range of 0.2 to 40 mmo 1 / liter in terms of nitrate cations, for example, magnesium and / or calcium cations. It is necessary to be, preferably 4 to 30 mmol / liter.
- component (C) If the content of component (C) is less than 0.2''ol / liter, the effect of uniforming the film will be insufficient. Also, if it exceeds 40 ⁇ ol liter, the concentration in the chemical conversion solution is high, causing sludge.
- the water-soluble aluminum compound-containing component (D) in the chemical conversion treatment solution for metals according to the present invention is also an essential component, and the chemical conversion solution excessively etches the surface of the metal material in the same manner as the magnesium and calcium strength thiones. There is an effect to prevent that.
- the metal aluminum of the material is eluted into the chemical conversion solution by etching accompanying the chemical conversion reaction. come. For this reason, if the treatment liquid is controlled well, it is not necessary to forcibly add (supplement) the aluminum compound during continuous operation.
- the aluminum equivalent content of this component (D) needs to be in the range of 0.2 to 40 mmol nortre, preferably 4 to 20 mmolZ. If the content of component (D) is less than 0.2 mmol / liter, the effect of homogenizing the film will be insufficient. Also, if it exceeds 40 ⁇ olZ liter, the concentration in the chemical conversion solution is high, causing sludge.
- the fluorine compound-containing component (E) in the metal chemical conversion treatment liquid of the present invention is an extremely important essential component.
- the fluorine compound influences the etching of the material, but in the present invention, it has been found that the component (E) has a great influence on the corrosion resistance of the obtained metal material subjected to chemical conversion treatment. It was also found that by controlling the amount of component (E) appropriately, sludge generation can be suppressed during continuous operation.
- hydrofluoric acid ammonium fluoride, chromium fluoride, fluorotitanic acid, fluorotitanium complex, fluorozirconic acid, fluorozylconium complex, magnesium fluoride, aluminum fluoride 1 or more types can be used.
- hydrofluoric acid and ammonium fluoride are extremely important, and the final adjustment of the content is performed by these.
- the fluorine equivalent content (CE) of the component (E) in the chemical conversion liquid that is, the total fluorine amount is preferably within the concentration range of the following formula.
- the concentration CA of the water-soluble trivalent chromium compound component is closely related to the concentration CD of the aluminum compound component (D), which must be controlled to satisfy the following formula.
- the formed chemical conversion film has insufficient corrosion resistance, and more sludge is generated during continuous operation.
- the maximum CE value is exceeded, the etching power of the resulting chemical conversion solution will increase and the deposition efficiency of the coating will deteriorate.
- the CE value is more preferably within the following range.
- the pH of the chemical conversion treatment solution for metals of the present invention is also extremely important and has an appropriate range.
- it is important to control the pH within the range of 2.3 to 5.0. If the pH force is less than S 2.3, the resulting chemical conversion solution has high etching power and the film deposition efficiency is insufficient.
- the pH exceeds 5.0, sludge generation increases during continuous operation.
- a more preferable pH range is 3.0 to 4.0.
- the pH adjustment method is not particularly limited, but it is preferably adjusted using nitric acid, hydrofluoric acid, ammonium hydrogen carbonate, or aqueous ammonia.
- An oxidizing agent (F) may be further added to the metal chemical conversion treatment liquid of the present invention.
- the oxidizing agent promotes the conversion film formation reaction, increases the film formation efficiency, and has the effect of improving the corrosion resistance by making the film denser.
- the oxidizing agent it is preferable to use a peroxo acid compound and a nitrous acid compound.
- the content is preferably 0.1 to 15 mmo 1 liter.
- a conversion film formation promoting effect appears at 0.1 mniolZ or more. Also, especially if it exceeds 15 mmo 1 / liter. Although it is not a problem, the concentration may be high, resulting in high costs and economical disadvantages.
- the metal chemical conversion treatment liquid is heated to a temperature of 30 to 70 ° C., brought into contact with a clean metal material surface for 1 to 60 seconds, and then washed with water. Apply deionized cleaning if necessary, then dry, on this surface 0.02 to 1 mmo l / m 2 chromium and 0.0 S l mmo l Z m 2 titanium and Z or zirconium A film containing is attached, and the film thickness is controlled to 1 to 100 nm. Processing temperature is an important factor in determining reactivity. At less than 30 ° C, the reactivity is poor and unsuitable for industrialization.
- the stability of the treatment liquid is impaired, which is not preferable.
- the surface of the material that comes into contact with the chemical conversion solution must be clean. This is because if the oil is attached, the film formation will be uneven.
- the pretreatment method normal solvent degreasing, alkaline degreasing, acidic degreasing, alkaline etching, and subsequent pretreatment such as acid-based desmutting and shot blasting are performed for cleaning. It only has to be made. However, it is more preferable that the surface oxide be deoxidized with an acid-based or water-soluble treatment liquid having a redox agent, and then subjected to chemical conversion treatment.
- the treatment time for contact with the chemical conversion treatment solution is in the range of 1 to 600 seconds. This is the time required to obtain the following adhesion amount in combination with the processing temperature and concentration. Generally, when the time is less than 1 second, the reaction is insufficient and film formation is not complete. Moreover, even if it exceeds 600 seconds, there is no particular advantage, and industrial productivity declines.
- the contact method can be a dipping method, a spray method, a flow coating method, or the like. After that, it is washed with water to rinse off unreacted components.
- the chemical conversion surface is used as a coating base, the hardness component in the washing solution may have a minor effect. In this case, it is preferable to perform deionization cleaning. In addition, dry.
- Drying is performed in order to volatilize moisture, and the drying method and drying temperature are not particularly limited, but hot air drying is preferable, and the drying temperature is 80 to 140 ° C industrially. Is a preferred range.
- the surface of the material has been processed, 0. 0 2 l mmo l / m 2 of chromium and 0, 0 2 ⁇ 1 mmo 1 / m conversion coating containing 2 titanium and Z or zirconium to form a There must be. Chromium content, 0.0 2 mm ol Z m less than 2, and titanium and / or zirconium content to zero. 0 2 In Rnmo l less than Z m 2, conversion coating amount is insufficient, corrosion resistance becomes insufficient.
- the corrosion resistance of the resulting chemical conversion film is not particularly problematic.
- the habit is high and it is economically disadvantageous.
- the film thickness of the conversion coating is 1 to 10
- the metal material to be brought into contact with the chemical conversion solution for the metal is not particularly limited, but aluminum or an aluminum alloy material, that is, an aluminum-containing metal material is suitable. Moreover, it is difficult to impart sufficient corrosion resistance in other inventions, and the material to which the present invention is most effectively applied is an aluminum die cast material. In particular, aluminum die cast materials widely used for parts, such as J
- the chemical conversion treatment liquid of the present invention is an acidic aqueous solution.
- the eluted aluminum is considered to react with hydrogen fluoride present in the chemical conversion solution of the present invention to become aluminum fluoride.
- the zirconium compound and Z or titanium compound which are essential components of the present invention, exist in the form of complex fluoride within the scope of the present invention.
- the consumption of hydrogen ions accompanying the etching reaction, hydrofluoric acid The equilibrium reaction of this complex fluoride changes due to the dissociation of the metal, and as a result, zirconium and / or titanium oxide (including hydroxide and hydrate) is deposited on the surface of the film. This oxide becomes the main component of the film, and the film is formed in a form incorporating a trivalent chromium compound (presumed to be chromium fluoride in the chemical conversion solution of the present invention) coexisting in this film.
- the film is composed of zirconium oxide, titanium oxide, or a compound in which a trivalent chromium compound is compounded with a mixture thereof.
- the trivalent chromium compound limited in the present invention has a significant effect on imparting corrosion resistance.
- Aluminum die-cast material JIS-AD C 12
- An aluminum die-cast panel manufactured by Partec Co., Ltd. was used.
- test metal material was soaked in a 2% aqueous solution of Al-powered degreasing agent (registered trademark Fine Cleaner 1 3 1 5 Nippon Paisiki Rising Co., Ltd.) for 2 minutes at 60 ° C, then tap water The surface was rinsed and cleaned with running water.
- Al-powered degreasing agent registered trademark Fine Cleaner 1 3 1 5 Nippon Paisiki Rising Co., Ltd.
- Example 7 Immerse the sample metal material in a 2% aqueous solution of a treatment agent (registered trademark Deoxydiizer 7 Nippon Parkerizing Co., Ltd.) at 40 ° C for 1 minute, and then rinse and clean the surface with running tap water did. Only Example 7 was performed.
- a treatment agent registered trademark Deoxydiizer 7 Nippon Parkerizing Co., Ltd.
- the amount of chromium, zirconium, and titanium or titanium attached by chemical conversion treatment was quantified using a fluorescent X-ray analyzer (System 3270E, manufactured by Rigaku Corporation).
- the specimen was sputtered using a surface analyzer (ESCA-850M manufactured by Shimadzu Corporation), and the commercially available thickness was calculated from the time required for the completion of the sputtering.
- a surface analyzer (ESCA-850M manufactured by Shimadzu Corporation)
- a sludge generation test was conducted for the purpose of evaluating the operability of the industrialization.
- One liter of chemical conversion treatment solution was prepared, and using this treatment solution, a 10 m 2 area of the test metal material was continuously treated.
- Each component was replenished to maintain the initial values for fluctuations in the concentration of each component due to liquid loss (carrying out) due to coating and treatment.
- the treated liquid was allowed to stand at 40 ° C. for 48 hours, and the state of the liquid after that was observed. Sediment (sludge) and liquid state (turbidity, etc.) were observed. It is preferable that no sludge is generated.
- the following chemical conversion treatment liquid 1 was prepared, and the purified metal material (1) was subjected to chemical conversion treatment by the following treatment method 1.
- a chemical conversion treatment liquid 2 was prepared, and the chemical conversion treatment 2 was performed on the cleaned metal material (1) by the following treatment method 2.
- the following chemical conversion treatment solution 3 was prepared, and the chemical conversion treatment 3 was performed on the purified metal material (1).
- the following chemical conversion treatment liquid 4 is prepared, and the cleaning metal material
- the following chemical conversion treatment solution 5 was prepared, and the chemical conversion treatment 5 was performed on the purified metal material (1) by the following treatment method 5.
- the following chemical conversion treatment liquid 6 was prepared, and the chemical conversion treatment 6 was applied to the purified metal material (1).
- the following chemical conversion treatment liquid 7 was prepared, and the chemical conversion treatment was performed on the purified metal material (1) by the following treatment method 7.
- the purified metal material (1) was subjected to the deoxidizing, and was subjected to a chemical conversion treatment in the same manner as in Example 7.
- Example 9 Using the cleaned metal material (2) (zinc die-cast material), a chemical conversion treatment was performed in the same manner as in Example 1.
- the following chemical conversion treatment solution 7 was prepared, and the purified metal material (1) was subjected to chemical conversion treatment by treatment method 7.
- the following chemical conversion treatment solution 8 was prepared, and the purified metal material (1) was subjected to chemical conversion treatment 8 according to treatment method 8.
- Aqueous treatment solution containing 2 g / liter of hexanocyanate, 1 g / liter of fluorotitanate, and 1 g / liter of cobalt nitrate Japanese Patent Laid-Open No. 2 0 0 4-2 3 2 0 4 7
- the cleaning metal material (1) was immersed for 60 seconds at 40 ° C. Next, as in treatment method 1, it was washed with water, washed with deionized water, and dried.
- Comparative Example 5 (1) Titanium sulfate 1 ⁇ ol / litre, (2) Hydrofluoric acid in an amount equivalent to 6 times the amount of titanium sulfate, and (3) Calcium nitrate 0.2 ⁇ olZ liter, (4 ) Trial manufacture and cleaning of surface treatment solution (corresponding to WO O 3 /: 0 7 4 7 6 1 A 1) containing 0.2 ⁇ ol / liter of aluminum nitrate and (creating nitrate ions) The metal material (1) was immersed for 60 seconds at 40 ° C. Subsequently, it was washed with water, deionized water and dried in the same manner as in treatment method 1.
- Aqueous surface treatment solution containing 10 mmo 1 Z liters of phosphoric acid, 10 mmo 1 / liters of chromium phosphate, and 1 mmo 1 Z liters of fluorozirconic acid (Patent 33) 3 3 6 1 No. 1) was prototyped, and the cleaned metal material (1) was immersed for 60 seconds at 40 ° C. Next, as in treatment method 1, it was washed with water, washed with deionized water, and dried.
- Chromate chemical conversion agent (Trademark: Alchrome 7 1 3 Building Bath) 5% aqueous solution (however, containing hexavalent chromium), soaking the cleaned metal material (1) at 40 ° C for 20 seconds Did. Next, as in treatment method 1, it was washed with water, washed with deionized water, and dried.
- Table 1 shows the test results of Examples 1 to 10 and Comparative Examples 1 to 9. Most of the existing chemical conversion treatment agents and methods were found to have insufficient product corrosion resistance. In Comparative Examples 6 and 9 with relatively good corrosion resistance, sediment was generated when the sludge generation test was performed, and there was a problem in operability (productivity) when industrialized. Thus, the chemical conversion treatment liquid and method according to the present invention can impart excellent corrosion resistance to the metal surface, and can also provide excellent paint adhesion, and also has excellent operability. It was confirmed. Industrial applicability
- the chemical conversion treatment liquid and the chemical conversion treatment method of the present invention provide excellent corrosion resistance, paint adhesion, and sludge generation prevention properties to a metal material without using a hexavalent chromium compound, It has high industrial applicability.
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US8409370B2 (en) | 2007-08-30 | 2013-04-02 | Jfe Steel Corporation | Treatment solution for insulation coating for grain oriented electrical steel sheet and method for producing grain oriented electrical steel sheet having insulation coating |
WO2009147960A1 (ja) * | 2008-06-07 | 2009-12-10 | 日本パーカライジング株式会社 | 金属材料の自己析出被膜処理用表面処理液、および自己析出被膜処理方法 |
JP2009293100A (ja) * | 2008-06-07 | 2009-12-17 | Nippon Parkerizing Co Ltd | 金属材料の自己析出被膜処理用表面処理液、および自己析出被膜処理方法 |
US8663376B2 (en) | 2008-06-07 | 2014-03-04 | Henkle AG & Co. KGaA | Surface treatment solution for autodeposition coating of metallic material and autodeposition coating treatment method |
JP2015124399A (ja) * | 2013-12-25 | 2015-07-06 | 日本パーカライジング株式会社 | アルミニウム又はアルミニウム合金用水系化成処理剤、化成処理方法及び化成処理されたアルミニウム及びアルミニウム合金 |
JP2016132785A (ja) * | 2015-01-16 | 2016-07-25 | 日本表面化学株式会社 | 三価クロム化成皮膜処理液及び金属基材の処理方法 |
WO2023174611A1 (de) * | 2022-03-14 | 2023-09-21 | Carl Freudenberg Kg | Passivierungsschicht für metallhaltige substrate |
CN115216759A (zh) * | 2022-07-09 | 2022-10-21 | 重庆理工大学 | 一种亲水化学转化成膜液及铝合金表面处理方法 |
CN115216759B (zh) * | 2022-07-09 | 2024-02-23 | 重庆理工大学 | 一种亲水化学转化成膜液及铝合金表面处理方法 |
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JP3784400B1 (ja) | 2006-06-07 |
KR20080017318A (ko) | 2008-02-26 |
CN101184867A (zh) | 2008-05-21 |
CN101184867B (zh) | 2010-05-19 |
JP2006328501A (ja) | 2006-12-07 |
KR101102484B1 (ko) | 2012-01-05 |
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