CN1252456A - Composition for metal surface treatment and surface treating liquid and surface treating method - Google Patents
Composition for metal surface treatment and surface treating liquid and surface treating method Download PDFInfo
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- CN1252456A CN1252456A CN 99121851 CN99121851A CN1252456A CN 1252456 A CN1252456 A CN 1252456A CN 99121851 CN99121851 CN 99121851 CN 99121851 A CN99121851 A CN 99121851A CN 1252456 A CN1252456 A CN 1252456A
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Abstract
A composition for treating metal surfaces that contains, at a weight ratio from 1:5,000 to 5,000:1, at least one metal acetylacetonate selected from the group consisting of Al(C5H7O2)3, V(C5H7O2)3, VO(C5H7O2)2, Zn(C5H7O2)2, and Zr(C5H7O2)4, and at least one compound selected from water-soluble inorganic titanium compounds and water-soluble inorganic zirconium compounds provides a non-chromate-type composition for imparting an excellent corrosion resistance and paint adherence to the surfaces of metals, particularly aluminum and its alloys, magnesium and its alloys, and zinc and its alloys.
Description
The present invention is relevant to investing the new metalloid surface treatment of superior solidity to corrosion and coating adhesion usefulness with constituent and surface treatment liquid, with surface treatment method on aluminium alloy, magnesium, magnesium alloy, the various metallic surfaces of steel plate galvanized class.
Usually, aluminum or aluminum alloy material surface treatment liquid roughly can be divided into chromic salt type and non-chromate type.Representative person as for the treatment solution of chromic salt type can enumerate chromic acid chromium hydrochlorate chemical synthesis treatment liquid and Plessy's green hydrochlorate chemical synthesis treatment liquid.
At first, chromic acid chromium hydrochlorate chemical synthesis treatment liquid is described.
Chromic acid chromium hydrochlorate chemical synthesis treatment liquid is promptly to have given practicability in generation nineteen fifty, also just is being widely used in the automobile heat exchanger now, aluminium foil, material of construction, the surface treatment of aviation machine material.This chromic acid chromium hydrochlorate chemical synthesis treatment liquid is to contain with chromic acid and be principal constituent person as the fluorochemical of reaction promotor, forms on metal material surface and contains some chromic tunicles that change into.
Again, Plessy's green hydrochlorate chemical synthesis treatment liquid is the invention person of forming who is disclosed in No. the 2438877th, United States Patent (USP) according to having given, and containing with chromic acid, phosphoric acid and hydrofluoric acid is principal constituent; On metal material surface, form water and Plessy's green be the tunicle that changes into of main composition.Because this changes into and does not contain sexavalent chrome in the tunicle, just be widely used in the aspects such as primary coat processing of the trunk material and the lid material of beverages can at present.
Though planting the formed tunicle that changes into of the surface treatment liquid of chromic salt type thus is to have superior solidity to corrosion and coating adhesion person, yet because of in treatment solution, containing deleterious sexavalent chrome, so be desirable with the use that does not contain chromic treatment solution fully by the problem on the environment.
As for the representativeness invention of the surface treatment liquid of the non-chromate type that does not contain chromium, can enumerate: the treatment solution that Japanese kokai publication sho 52-131937 communique discloses.This surface treatment liquid is to contain zirconium or titanium or these mixture, and phosphoric acid salt and fluorochemical, and the acidic aqueous lining solution of the about 1.5-4.0 of pH.If when adopting this surface treatment liquid to handle metal material surface, then being formed with on the metallic surface with zirconium or titanyl compound is the tunicle that changes into of principal constituent.The surface treatment liquid of this non-chromate type is to have not contain chromic advantage, just is being widely used in the aspects such as surface treatment of aluminium DI jar now, and only the solidity to corrosion of formed tunicle has the shortcoming also inferior than the chromic salt tunicle.
As for non-chromate type treatment solution, following patent gazette those disclosed herein can have been enumerated again.
For example, the treatment process that Japanese kokai publication sho 57-41376 communique discloses, be adopt one or two or more kinds and the imdazole derivatives contain titanium salt or zirconates one or two or more kinds, with the surface of the aqueous solution to aluminium, magnesium and alloy thereof of the oxygenant of nitric acid, hydrogen peroxide, potassium permanganate etc. on carry out surface treatment person, though the solidity to corrosion of the formed tunicle of treatment solution was enough before 15 years thus, yet can be satisfactory to saying so at present.
Again, in Japanese kokai publication sho 56-136978 communique, disclosing has by containing by vanadium compound, the aqueous solution of at least a compound of selecting with the colony of titanium salt, zirconates and zinc salt and become the chemical synthesis treatment liquid of feature.Yet, change into tunicle what treatment solution thus formed, in the situation of implementing long-standing corrosion resistant test, fail to expect to have and the equal above solidity to corrosion of chromic salt tunicle.
By above-mentioned, adopted the situation of the surface treatment liquid of the aforementioned non-chromate type of commonly using, especially through the solidity to corrosion that changes into tunicle of giving formation still residual problem.Thus thing as can be known, in especially being required superior corrosion proof aluminum alloy heat exchanger, aluminium is that surface disposing line, the present situation of the coil pipe of metallic substance and plate material etc. is not use the surface treatment liquid of non-chromate type in several years.
Therefore, at present do not contain sexavalent chrome in the treatment solution, wastewater treatment is superior and can form solidity to corrosion and the aluminum or aluminum alloy material that changes into tunicle that coating adhesion is superior is then established as yet with surface treatment liquid.
Secondly, the surface treatment liquid and the surface treatment method of magnesium or used for magnesium alloy are described.
The surface treatment method of using as for magnesium or magnesium alloy materials is just giving practicability with the chromate treating of representatives such as JIS-H-8651 or MIL-M-3171.Though utilize the formed tunicle that changes into of the face treatment solution of this kind chromic salt type to have the superior solidity to corrosion and the adherence of filming, but owing to contain very deleterious sexavalent chrome in the treatment solution, so using of chromic treatment solution do not expected as the people not contain fully by the problem on the environment.
As for the representativeness invention of the surface treatment liquid of the non-chromate type that does not contain chromium, can enumerate the method that Japan discloses for special fair 3-6994 number.This processing method is to impose silicate to handle after phosphatizing, impose the silica processor more thereon, only aspect the independent tunicle of phosphatizing,, there is the lower problem points of level of solidity to corrosion and coating adhesion to exist as the primary coat treatment process on magnesium or magnesium alloy materials surface.Moreover the reason method is the shortcoming that needs multistage treatment step, treatment temp height, treatment time length etc. herein.
As for adopting phosphatic surface treatment method, be known though adopt the method for the treatment solution of zinc phosphate system, tertiary iron phosphate system, series of calcium phosphate, zirconium phosphate system etc., only these methods are inconvenient investing on enough solidity to corrosions one thing in the practicality.
For example, disclosing manganous phosphate and handle in 7 kinds of JIS-H-8561, only this treatment solution is the person of containing chromium, and treatment temp is up to 80-90 ℃, and the treatment time also quite reaches 30-60 minute, and it is not satisfied that historical facts or anecdotes is used.
As for the technology of non-chromate type, can enumerate following communique.
In Japanese kokai publication hei 9-228062 communique; announcement has at least a organometallic compound of being selected by metal alkoxide, metal acetyl yl acetate, metal carboxylate containing; and form the aqueous solution that auxiliary agent or tunicle form tranquilizer by at least a tunicle that any one the organic compound with acid, alkali, its esters or hydroxyl, carboxyl, amido is selected, at temperature 0-50 ℃ of surface treatment method that is applicable to magnesium material.Yet, at the formed tunicle that changes into of treatment solution thus, implemented the situation of long-standing corrosion resistant test, fail to expect and the equal above solidity to corrosion of chromic salt tunicle.
As above-mentioned, adopt the situation of the surface treatment liquid of commonly using the non-chromic salts type that son proposes in aforementioned magnesium or used for magnesium alloy, residue problem point still on the processing bar in formed solidity to corrosion or the treatment temp height that changes into tunicle, the treatment time is long, concentration of treatment is high, solidity to corrosion is lower etc. the practicality.Thing as can be known thus, at the surface disposing line of automotive material, flying machine material, e-machine material and the communication tool material etc. of the magnesium alloy system that is required superior solidity to corrosion or coating adhesion, on present situation the surface treatment liquid that uses the non-chromate type hardly.
Therefore, at present do not contain sexavalent chrome in the treatment solution, operation is superior, and can form solidity to corrosion and superior magnesium that changes into tunicle or the magnesium alloy materials of coating adhesion then established as yet with surface treatment liquid.
Secondly, the surface treatment of zinc-plating material is described.
As for the treatment process of used for zinc-plating material, it is more common handling with chromate treating or zinc phosphate.Though chromic salts handle can get superior to film properties, yet contain deleterious chromium in the treatment solution, be to form in the operation and the problem on discarded.Then fail to obtain enough corrosion proof situations in the zinc phosphate processing again.
As for the technology of the non-chromate type of zinc-plating material, can enumerate the method that following communique proposes.
In Japanese kokai publication hei 1-104783 communique; announcement have with coating on zinc, aluminium or zinc-plated-aluminium alloy steel plate contain the alkoxide of Si, Ti, Zr, Al, W, Ce, Sn, Y or ethanoyl acetic ester salt one or two or more kinds alcoholic solution and 200-500 ℃ of heating, the oxide compound tunicle that forms the metal that is contained in the solution on surface of steel plate is the manufacture method of the surface treated steel plate of feature.Yet, in this manufacture method, must use the alcohol that scintillation is arranged, moreover when forming tunicle,, promptly have problem to exist on the operating environment and on the cost of energy owing to need quite high temperature.
Thing as can be known thus, even the surface treatment to zinc-plating material is also same with the situation of aluminium based material or magnesium material, do not contain sexavalent chrome in the treatment solution, operation is superior, and can form the superior surface treatment liquid that changes into tunicle of solidity to corrosion and coating adhesion and then establish as yet.
The present invention be to solve the problems referred to above point person of finishing that located by prior art had, and particularly, can to invest the composition for metal surface treatment of superior solidity to corrosion and coating adhesion and surface liquid and surface treatment method to the metallic surface be purpose to provide.
The inventor etc. examine meticulously to the means that adopt for the solution problem point that located by prior art had.Consequently find to contain with specific ratios the Al (C of specified quantitative with employing
5H
7O
2)
3, V (C
5H
7O
2)
3, VO (C
5H
7O
2)
2, Zn (C
5H
7O
2)
2And Zr (C
5H
7O
2)
4At least a metal acetyl yl acetate of selecting, with the surface treatment constituent of at least a compound of selecting by water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds, and adopt the surface treatment liquid of this constituent; can be formed on the tunicle that changes into that has superior solidity to corrosion and coating adhesion on the metallic surface, so that finish the present invention.
That is composition for metal surface treatment of the present invention is to be contained in (the C by Al
5H
7O
2)
3, V (C
5H
7O
2)
3, VO (C
5H
7O
2)
2, Zn (C
5H
7O
2)
2And Zr (C
5H
7O
2)
4At least a metal acetyl yl acetate that the colony that forms selects, and at least a compound of being selected by water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds 1: 5000-5000: 1 weight ratio is a feature.
Again, surface treatment liquid of the present invention is to contain (the C by Al
5H
7O
2)
3, V (C
5H
7O
2)
3, VO (C
5H
7O
2)
2, Zn (C
5H
7O
2)
2And Zr (C
5H
7O
2)
4At least a metal acetyl yl acetate 0.01-50g/L that selects, with at least a compound 0.01-50g/L that is selected by water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds, and the pH with 2.0-7.0 is a feature.
Moreover, surface treatment method of the present invention, be by making the contact of aforementioned metal surface treatment liquid and aluminium or its alloy, magnesium or its alloy or zinc or its alloy, it is the metallic surface treatment process of feature that the organic-inorganic composite that forms tunicle weight 5-2000mg/m2 becomes tunicle.
Secondly, describe formation of the present invention and as follows in conjunction with the accompanying drawings in detail.
Fig. 1 is the composition, condition and the evaluation test result's that are shown in the surface treatment liquid of embodiment 1-5 a chart (table 5).
Fig. 2 is the composition, condition and the evaluation test result's that are shown in the surface treatment liquid of comparative example 1-9 a chart (table 6).
Surface treatment constituent of the present invention is to contain with by Al (C5H
7O
2)
3、V(C
5H
7O
2)
3、
VO(C
5H
7O
2)
2、Zn(C
5H
7O
2)
2And Zr (C5H
7O
2)
4At least a metal acetyl yl acetate that the colony that forms selects, with at least a compound of being selected by water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds be essential component person.
In the present invention; such as specific metal acetyl yl acetate and titanium; as specific metal acetyl yl acetate and zirconium or specific metal acetyl yl acetate and titanium and the zirconium; be most important so that form the compound tunicle of organic and inorganic that the inorganic compound of metal acetyl yl acetate and titanium and/or zirconium forms, by and can be considered the formed corrosion resistance that changes into tunicle is improved.
The metal acetyl yl acetate of the essential component of surface treatment constituent of the present invention is by Al (C5H
7O
2)
3、V(C
5H
7O
2)
3、VO(C
5H
7O
2)
2、Zn(C
5H
7O
2)
2And Zr (C5H
7O
2)
4It is at least a that the colony that forms selects.
The water-soluble inorganic titanium compound of the essential component of surface treatment constituent of the present invention or water-soluble inorganic zirconium compounds, to use one or two or more kinds that selected by sulfate, oxygen base sulfate, nitrate, phosphate, chloride, ammonium salt and the fluoride etc. of titanium or zirconium, if water-soluble inorganic compound gets final product, its kind is not given and being particularly limited. Water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds in these are the key parts of separating out moreover become the compound tunicle of organic and inorganic that forms on the metal to be treated surface with the state of oxide, phosphate or the fluoride etc. of Ti, Zr between the metal acetyl yl acetate of separating out simultaneously. Therefore, by the existence of this Ti, Zr, tunicle is improved to the barrier performance (barrier) of corrosive environment, the result uses more separately the situation of metal acetyl yl acetate can form corrosion resistance and the superior tunicle of coating adhesion.
The cooperation ratio of aforementioned metal acetyl group acetic acid esters and water-soluble inorganic compound need be set as 1: 5000-5000: 1. Be preferably 1: 100-400: 1, be preferably 1: 50-100: 1 more is preferably 1: 10-10: 1. If this weight ratio was less than 1: 5000 o'clock, then the corrosion resistance of the compound tunicle of formed organic and inorganic is inferior. If otherwise surpass at 5000: 1 o'clock, then difficulty forms organic-inorganic compounding tunicle.
Secondly, metal surface treating liquid of the present invention is to adopt aforementioned surfaces to process constituent and water person basically.
At first, the amount in the treatment solution of metal acetyl yl acetate is preferably the scope at 0.01-50g/L, is preferably the scope of 0.1-20g/L.Can give formation even the amount of metal acetyl yl acetate changes into tunicle during less than 0.01g/L, yet solidity to corrosion and coating adhesion are inferior not good.Though even can form the good tunicle that changes into when surpassing 50g/L again, its effect is saturated, the cost of treatment solution uprises, and forms waste economically.
Again, the amount of water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds is advisable in the scope of 0.01-50g/L, should be in the scope of 0.05-10g/L.Even amount also can form less than 0.01g/L and change into tunicle, yet solidity to corrosion is inferior not good.Change into tunicle even also can form when surpassing 50g/L, but its effect is saturated, cost uprises, and forms waste economically again.
The pH of surface treatment liquid of the present invention must be adjusted in the scope of 2.0-7.0.Be preferably the scope of pH 3.0-6.0.PH was less than 2.0 o'clock, and owing to uneven can the generation of outward appearance that the etching to metal material surface too much causes, the metal acetyl yl acetate is difficult to the metallic surface separates out, so not good.Again, pH is if surpass at 7.0 o'clock, and then solidity to corrosion is superior changes into that tunicle is difficult to be formed, and the metal ion that is contained in the treatment solution is owing to generate precipitate easily, so the stability of liquid can generate problem, so not good.Be adjusted at pH when the scope of 2.0-7.0, look the acid and the alkali such as sodium hydroxide, yellow soda ash, potassium hydroxide and ammonium hydroxide that can use nitric acid, sulfuric acid, phosphoric acid, hydrofluoric acid and silicon hydrofluoric acid etc. in case of necessity surface treatment liquid of the present invention.
And, when surface treatment of the present invention, by the metal to be treated material by making metal ion strippings such as aluminium, magnesium, zinc in surface treatment liquid, the stability of treatment solution can reduce significantly, so situation is closed these metal ions for stinging, in treatment solution, add organic acid such as glyconic acid, heptyl glyconic acid, formic acid, tartrate, organic sulfonic acid and ethylenediamine tetraacetic acid (EDTA) or these alkali metals salt and also can as blocking agent.
Again, be to make the formation that promotes to change into tunicle in the present invention, also can and with hydrogen peroxide, wolframic acid and these salt, molybdic acid and these salt, cross mangaic acid and these salt, with peroxidation tributyl ((CH
3)
3C-O-OH) oxygenant of etc. water-soluble organo-peroxide etc.
Becoming the tunicle weight of tunicle by the formed organic-inorganic composite of aforesaid method, is to be advisable in the scope of 5-2000mg/m2, is preferably the scope at 50-500mg/m2.Tunicle weight is during less than 5mg/m2, and solidity to corrosion and coating adhesion have becomes insufficient situation, not good.Again, even tunicle weight surpasses 2000mg/m2, though solidity to corrosion is also superior, yet its effect is saturated, cost uprises, and forms waste economically.And if tunicle weight is when surpassing 2000mg/m2, and then coating adhesion has the tendency of reduction, and the inhomogeneous in appearance of tunicle showing again, waits viewpoint also not good thus.
Again,,, there is a form in the tunicle, do not give special qualification its bonding state, the state of oxidation, high molecular state etc. to the metal ingredient of the aluminium of the constituent that changes into tunicle, vanadium, zinc, zirconium, titanium.
Secondly, by making surface treatment liquid of the present invention, contacting with aluminium or its alloy, magnesium or its alloy or zinc or its alloy, can form solidity to corrosion and coating adhesion superior change into tunicle.The method of the various metallic substance of surface treatment below is described.
Surface treatment liquid of the present invention, be following show that step is suitable for as preferred embodiment.
1. surface cleaning: degreasing (any one of acid, neutral system, alkali system, solvent system all can)
2. washing
3. utilize the surface treatment of treatment solution of the present invention
4. washing
5. deionization washing
6. dry
As for surface treatment liquid of the present invention, with at temperature 10-80 ℃, make under the condition of time 1-600 second to contact and be advisable with the surface of metallic substance again.This contact temperature is during less than 10 ℃, and the reactivity between treatment solution and metallic surface is not enough, fails to form the good tunicle that changes into, and again, if this temperature changes into tunicle when surpassing 80 ℃ though then can form, and only cost of energy uprises, and forms waste economically.Again, the treatment time is during less than 1 second, fails enough reactions, only fail to form solidity to corrosion superior change into tunicle.On the other hand, even the time surpasses 600 seconds, the solidity to corrosion that changes into tunicle of gained and coating adhesion be undiscovered raising.
And, in the present invention, and the way of contact between surface treatment liquid, for any one of pickling process, spray up method all can.
The aluminum or aluminum alloy material that surface treatment constituent and surface treatment liquid of the present invention are suitable for, be to comprise the metal that forms by fine aluminium and aluminium alloy, aluminium alloy, for example comprise Al-Cu, Al-Mn, Al-Si, Al-Mg, Al-Mg-Si, the alloy that the multiple composition of Al-Zn-Mg etc. is reaches Al or imposes aluminized metallic substance (Aludip etc.).
Again, magnesium or U.S. alloy material are to comprise the metal that is formed by pure magnesium and magnesium alloy, and magnesium alloy for example comprises the alloy of the multiple composition system of Mg-Al-Zn, Mg-Zn and Mg-Al-Zn-Mn etc.
Moreover, zinc or zinc alloy, be especially to refer to impose galvanized metallic substance, comprise the steel plate that plates fused zinc, the steel plate of alloying plating fused zinc, steel plate (zinc-plated, galbarium), electric galvanized steel plate and the electric galvanized steel plate of alloy etc. of plating Al-Zn alloy.
And in aforementioned aluminium and aluminum alloy materials, magnesium and magnesium alloy materials, zinc and zinc alloy material, its shape, yardstick etc. are also unrestricted, for example comprise sheet material and various molding etc.Again, the surface of these materials is that specified metal has part to exist at least earlier get final product, for example under the rolling or galvanized state of maintenance, or again through pearl hit, the roughening of acid or alkali, the state that imposes the processing of sensitization etc. also can.
Below, enumerate embodiment and comparative example simultaneously, than the effect of specific description surface treatment constituent of the present invention and surface treatment liquid and surface treatment method.
Embodiment 1-5 and comparative example 1-4
For the examination material
As for by the surface treatment aluminum alloy materials, can use Al-Mn is alloy sheets (JIS3004) (yardstick: 150mm * 70mm, thickness of slab 0.2mm).
As for by the surface treated magnesium alloy material, can use the die casting plate (yardstick: 150mm * 10mm, thickness of slab 1mm) of the magnesium alloy AZ91D of JISH2222 defined.
As for by the surface treatment zinc-plating material, can use the steel plate (yardstick: 150mm * 70mm, thickness of slab 0.8mm) of alloying plating fused zinc.
Treatment condition
Handle with the following step order 1. → 2. → 3. → 4. → 5. → 6., make the surface treatment plate.
1. degreasing (43 ℃, 2 minutes, pickling process)
Adopt commercially available alkali grease-removing agent (registered trademark: Fine cleaner L4460A; 2% and Finecleaner L4460B; 1.2% mixed aqueous solution, any one is Japanese Parkerizing limited-liability company and makes).
2. washing (normal temperature, 30 seconds, spray up method)
3. surface treatment (pickling process)
Surface treatment liquid and treatment condition with the composition shown in Fig. 1 (table 5) and Fig. 2 (table 6) are carried out surface treatment.The used material of the surface treatment liquid of embodiment 1-5 and comparative example 1-4 is shown in table 1.And in the weight of each material shown in the hurdle that the treatment solution of table 2 and table 3 is formed, be the value that has been converted into pure composition,
Again, the surface treatment condition of below representing comparative example 5-9.
4. washing (normal temperature, 30 seconds, spray up method)
5. deionization washing (normal temperature, 30 seconds, spray up method)
6. heat the universe dry (80 ℃, 3 minutes, hot-air oven)
Table 1
The metal acetyl yl acetate that the surface treatment liquid of embodiment 1-5 and comparative example 1-4 is used
| Mark | Supply source |
| ????A | Aluminium ethanoyl acetic ester Al (C 5H 7O 2) 3 |
| ????B | Vanadium ethanoyl acetic ester V (C 5H 7O 2) 3 |
| ????C | Vanadium oxygen ethanoyl acetic ester VO (C 5H 7O 2) 3 |
| ????D | Zinc ethanoyl acetic ester Zn (C 5H 7O 2) 2 |
| ????E | Zirconium ethanoyl acetic ester Zr (C 5H 7O 2) 4 |
Table 2
The water-soluble titanium compound that the surface treatment liquid of embodiment 1-5 and comparative example 1-4 is used
| Mark | Supply source |
| ????A | 40% titanium hydrofluoric acid H 2TiF 6 |
| ????B | 24% titanium sulfate Ti (SO 4) 2 |
Table 3
The water-soluble zirconium compound that the surface treatment liquid of embodiment 1-5 and comparative example 1-4 is used
| Mark | |
| First | |
| 20% zirconium hydrofluoric acid H 2ZrF 6 | |
| Second | Zirconium Neutral ammonium fluoride (NH 4) 2ZrF 6 |
Table 4
The used pH of the surface treatment liquid of embodiment 1-5 and comparative example 1-4 adjusts agent
Comparative example 1
| Mark | Supply source |
| ????α | 67.5% nitric acid HNO 3 |
| ????β | 40% silicon hydrofluoric acid H 2SiF 6 |
| ????γ | 25% ammoniacal liquor NH 4OH |
Be to be the treatment solution composition only, make the comparative example of the independent tunicle that can form the metal acetyl yl acetate with the metal acetyl yl acetate.Comparative example 2
Be to be the treatment solution composition only, make the comparative example of the independent tunicle that can form inorganic titanium compound with the water-soluble inorganic titanium compound.Comparative example 3
Form by the treatment solution that water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds form, make and to form the not comparative example of the inorganic compounding tunicle that titanium and zirconium constituted of containing metal ethanoyl acetic ester.Comparative example 4
Be to make the comparative example that can form the few tunicle of tunicle weight.Comparative example 5
In the surface treatment aspect, adopting commercially available zirconium phosphate is surface treatment agent (registered trademark: Alozin4040, the manufacturing of Japan Pakerizing limited-liability company) 2% aqueous solution, therefore under the condition of 50 ℃ of temperature, 60 seconds time, spray up method, to apply this liquid on aforementioned Al alloy sheets, assessment solidity to corrosion and coating adhesion.Comparative example 6
In the surface treatment aspect, adopt commercially available Plessy's green phosphate-gallate series surface treatment agent (registered trademark: Alchrome K702SL; 4% and Alchrome K702AC; 0.3% mixed aqueous solution, any one is Japanese Pakerizing limited-liability company and makes).Therefore, under the condition of 50 ℃ of temperature, 20 seconds time, spray up method, to apply this liquid on aforementioned Al alloy sheets, assessment solidity to corrosion and coating adhesion.Comparative example 7
In the surface treatment aspect, adopt 7% aqueous solution of commercially available chromic acid chromium hydrochlorate surface treatment agent (registered trademark: Alchrome 713M, Japanese Pakerizing limited-liability company makes).Therefore, under the condition of 40 ℃ of temperature, 60 seconds time, pickling process, apply this liquid, assessment solidity to corrosion and coating adhesion in aforementioned Al alloy sheets, Mg alloy sheets and steel plate galvanized.Comparative example 8
In the surface treatment aspect, adopting with the sodium dichromate 99 is the treatment solution of the MIL-M-3171C (TYPEIII) of principal constituent.Therefore, under the condition of 95 ℃ of temperature, 30 minutes time, pickling process, apply this liquid on aforementioned Mg alloy sheets, assessment solidity to corrosion and coating adhesion.Comparative example 9
After aforementioned degreasing 1. and the washing 2., implementing commercially available titanium with the condition of 25 ℃ of temperature, 30 seconds time, pickling process is surface conditioner (registered trademark: Prepalene4040, the manufacturing of Japan Pakerizing limited-liability company) 0.1% aqueous solution, thereafter under normal temperature, 30 seconds, the condition of spray up method after the washing, adopting commercially available zinc phosphate in the surface treatment aspect is the aqueous solution (registered trademark: Palbond L3020 of surface treatment agent; 5% with additive 4813; 0.5% with additive 4856; 2% and neutralizing agent 4055; 1% mixed aqueous solution, any one is Japanese Pakerizing limited-liability company and makes).Therefore, under the condition of 43 ℃ of temperature, 120 seconds time, pickling process, apply this liquid on aforementioned Zn-coated steel sheet, assessment solidity to corrosion and coating adhesion.
Appraisal procedure
(1) tunicle weight
Adopt fluorescent x-ray analysis equipment or 5 weight % chromic acid aqueous solutions, 90 ℃, 5 minutes the method for peeling off of dipping, measure the tunicle weight of the integral body of the compound tunicle of organic and inorganic.
(2) solidity to corrosion
Corrosion proof assessment is the salt spray testing that adopts JIS Z-2371 regulation, with the corrosion generation state of the surface treatment plate after the visual assessment salt spray testing.
To impose surface treatment each for the brine spray time of examination material and the assessment benchmark of solidity to corrosion, be as described below as,
Spray time
The Al alloy sheets ... ... 480 hours
The Mg alloy sheets ... ... 24 hours
Zn-coated steel sheet ... ... 120 hours
The assessment benchmark
◎: the corroded area rate is less than 10%
Zero: the corroded area rate is more than 10%, less than 30%
△: the corroded area rate is more than 30%, less than 50%
*: the corroded area rate is more than 50%
(3) coating adhesion
On surface with the surface treated Al alloy sheets of the condition of embodiment 1-5 and comparative example 1-9, Mg alloy sheets or steel plate galvanized, coating becomes 10 μ m with epoxy resin coating (lacquer limited-liability company in the Northwest makes) to dry coating, 200 ℃ of bakings of carrying out 10 minutes.It delineates the 100 lattice chessboard orders of wide 2mm inferior to the central authorities of this coated panel with cutters, and dipping is 60 minutes in deionization boiling water.Therefore, with coated panel air-dry after, carry out the adhesive tape stripping test, with this moment unstripped chessboard purpose residual number assessment coating adhesions are arranged.
And it is more superior that this extant number means coating adhesion the more the time, if when extant number 98 is above, then has enough performances in practicality.
Assessment result is shown in Fig. 1 (table 5) and Fig. 2 (table 6).
By table 5 and table 6; by the formed tunicle that changes into of surface treatment liquid of the present invention is to have and equal solidity to corrosion and the coating adhesion of commonly using of chromic salt tunicle; and, can realize superior solidity to corrosion as can be known by the compound tunicle of the organic-inorganic that has coexisted of metal acetyl yl acetate that forms suitable tunicle weight and Ti/Zr.
Show and as can be known, will answer relevant surface treatment constituent of the present invention and surface treatment liquid to be applicable to alumina-bearing material by above-mentioned explanation, or contain magnesium material, or zinc-plating material, make to form the tunicle that changes into and become possibility with superior solidity to corrosion and coating adhesion.
Therefore, surface treatment liquid of the present invention is extremely useful person in practicality.
Claims (3)
1. a composition for metal surface treatment is characterized in that, contains (the C by Al
5H
7O
2)
3, V (C
5H
7O
2)
3, VO (C
5H
7O
2)
2, Zn (C
5H
7O
2)
2And Zr (C
5H
7O
2)
4At least a metal acetyl yl acetate that the colony that forms selects, with at least a compound of selecting by water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds 1: 5000-5000: 1 weight ratio.
2. a metal surface treating liquid is characterized in that, contains (the C by Al
5H
7O
2)
3, V (C
5H
7O
2)
3, VO (C
5H
7O
2)
2, Zn (C
5H
7O
2)
2And Zr (C
5H
7O
2)
4At least a metal acetyl yl acetate 0.01-50g/L that selects with at least a compound 0.01-50g/L that is selected by water-soluble inorganic titanium compound and water-soluble inorganic zirconium compounds, and has the pH of 2.0-7.0.
3. metallic surface treatment process, nationality is by the described metal surface treating liquid of claim 2, it is characterized in that, metal surface treating liquid and aluminium or its alloy, magnesium or its alloy or zinc or the contact of its alloy, the organic-inorganic composite that forms tunicle weight 5-2000mg/m2 becomes tunicle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30766598 | 1998-10-28 | ||
| JP307665/1998 | 1998-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1252456A true CN1252456A (en) | 2000-05-10 |
| CN1209496C CN1209496C (en) | 2005-07-06 |
Family
ID=17971780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99121851 Expired - Lifetime CN1209496C (en) | 1998-10-28 | 1999-10-20 | Composition for metal surface treatment and surface treating liquid and surface treating method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1209496C (en) |
| TW (1) | TW448077B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333415C (en) * | 2003-05-26 | 2007-08-22 | 乳源瑶族自治县东阳光化成箔有限公司 | Anode aluminium foil etching process for electrolytic capacitor |
| CN104271800A (en) * | 2012-03-09 | 2015-01-07 | 日本油漆株式会社 | Surface treatment method for aluminum heat exchangers |
| CN107429405A (en) * | 2015-04-07 | 2017-12-01 | 新日铁住金株式会社 | Zn Mg alloy plating steel plates |
-
1999
- 1999-10-20 TW TW88118096A patent/TW448077B/en active
- 1999-10-20 CN CN 99121851 patent/CN1209496C/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1333415C (en) * | 2003-05-26 | 2007-08-22 | 乳源瑶族自治县东阳光化成箔有限公司 | Anode aluminium foil etching process for electrolytic capacitor |
| CN104271800A (en) * | 2012-03-09 | 2015-01-07 | 日本油漆株式会社 | Surface treatment method for aluminum heat exchangers |
| CN107429405A (en) * | 2015-04-07 | 2017-12-01 | 新日铁住金株式会社 | Zn Mg alloy plating steel plates |
| CN107429405B (en) * | 2015-04-07 | 2019-09-10 | 日本制铁株式会社 | Zn-Mg alloy plating steel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1209496C (en) | 2005-07-06 |
| TW448077B (en) | 2001-08-01 |
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