EP1593758A1 - Procede de fabrication d'un revetement d'oxyde anodique sur une surface d'aluminium ou d'alliage d'aluminium - Google Patents
Procede de fabrication d'un revetement d'oxyde anodique sur une surface d'aluminium ou d'alliage d'aluminium Download PDFInfo
- Publication number
- EP1593758A1 EP1593758A1 EP04705515A EP04705515A EP1593758A1 EP 1593758 A1 EP1593758 A1 EP 1593758A1 EP 04705515 A EP04705515 A EP 04705515A EP 04705515 A EP04705515 A EP 04705515A EP 1593758 A1 EP1593758 A1 EP 1593758A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aluminum
- aluminum alloy
- oxide layer
- anodic oxide
- bath liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 44
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910000838 Al alloy Inorganic materials 0.000 title claims description 48
- 239000010407 anodic oxide Substances 0.000 title claims description 33
- 239000011248 coating agent Substances 0.000 title 1
- 238000000576 coating method Methods 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 12
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 10
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000007864 aqueous solution Substances 0.000 claims abstract description 8
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims abstract description 8
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 94
- 239000002344 surface layer Substances 0.000 claims description 11
- 229910000737 Duralumin Inorganic materials 0.000 claims description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 9
- 239000004332 silver Substances 0.000 claims description 9
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 8
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 4
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 4
- 229910000367 silver sulfate Inorganic materials 0.000 claims description 4
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L silver sulfate Chemical compound [Ag+].[Ag+].[O-]S([O-])(=O)=O YPNVIBVEFVRZPJ-UHFFFAOYSA-L 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 14
- 230000003115 biocidal effect Effects 0.000 abstract description 8
- 238000003754 machining Methods 0.000 abstract description 3
- 238000004381 surface treatment Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 23
- 239000000956 alloy Substances 0.000 description 21
- 239000001963 growth medium Substances 0.000 description 17
- 241000894006 Bacteria Species 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 12
- 238000007796 conventional method Methods 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 239000000523 sample Substances 0.000 description 8
- 239000002131 composite material Substances 0.000 description 7
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 6
- 241000482268 Zea mays subsp. mays Species 0.000 description 6
- 241000607272 Vibrio parahaemolyticus Species 0.000 description 5
- 230000001580 bacterial effect Effects 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- -1 sulfuric acid ion Chemical class 0.000 description 5
- 229910018131 Al-Mn Inorganic materials 0.000 description 4
- 229910018461 Al—Mn Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000004040 coloring Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 3
- 241001354013 Salmonella enterica subsp. enterica serovar Enteritidis Species 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 229920001817 Agar Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 239000008272 agar Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 235000013611 frozen food Nutrition 0.000 description 2
- 235000015243 ice cream Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- WTYYGFLRBWMFRY-UHFFFAOYSA-N 2-[6-(oxiran-2-ylmethoxy)hexoxymethyl]oxirane Chemical compound C1OC1COCCCCCCOCC1CO1 WTYYGFLRBWMFRY-UHFFFAOYSA-N 0.000 description 1
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 description 1
- 229910018134 Al-Mg Inorganic materials 0.000 description 1
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018137 Al-Zn Inorganic materials 0.000 description 1
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- 229910018467 Al—Mg Inorganic materials 0.000 description 1
- 229910018464 Al—Mg—Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 229910018573 Al—Zn Inorganic materials 0.000 description 1
- 101100055224 Anemone leveillei AL10 gene Proteins 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- 101100162020 Mesorhizobium japonicum (strain LMG 29417 / CECT 9101 / MAFF 303099) adc3 gene Proteins 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 101100434411 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ADH1 gene Proteins 0.000 description 1
- ULQMPOIOSDXIGC-UHFFFAOYSA-N [2,2-dimethyl-3-(2-methylprop-2-enoyloxy)propyl] 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(C)(C)COC(=O)C(C)=C ULQMPOIOSDXIGC-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 101150102866 adc1 gene Proteins 0.000 description 1
- 101150042711 adc2 gene Proteins 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 238000012136 culture method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
Definitions
- the present invention relates to an improvement of a method for forming an anodic oxide layer on a surface of aluminum or an aluminum alloy.
- a method for forming a corrosion-resistant oxide layer by anodizing aluminum or an alloy thereof in an electrolytic solution such as an aqueous solution of nitric acid, sulphuric acid or chromic acid for the purpose of mainly improving corrosion resistance thereof is known as an alumite treatment.
- Articles subjected to the alumite treatment are widely utilized in various fields with a central focus on daily commodities such as a pan and a teakettle.
- the layer to be formed by a conventional method is restricted to have a comparably small thickness of about 30 to about 50 ⁇ m, a low hardness and the like and, accordingly, there is a given limitation upon applications thereof.
- the present invention has been achieved in order to solve these problems and an object of the present invention is to provide a method for treating a surface of aluminum or an aluminum alloy which can treat various types of aluminum alloys involving not only aluminum itself, but also duralumin and a die cast alloy, can apply a thick layer of 300 to 500 ⁇ m and has a number of advantages such that the layer to be obtained has a high surface hardness, an excellent heat resistance, an antibiotic action and the like and can produce various types of aluminum materials which can be utilized in a far wide field compared with a conventional one.
- the above-described object according to the present invention can be attained by performing an anodic oxidation treatment by using a bath liquid, which involves an aqueous solution containing 250 gr/l to 350 gr/l of sulfuric acid and 15 gr/l to 25 gr/l of nickel sulfate under the following conditions:
- the above-described treatment according to the present invention is referred to as “the present treatment (1)” and a product to be obtained thereby is referred to as “present product (1)”.
- the object according to the present invention can be performed more favorably by using a bath liquid in which the bath liquid to be used in the present treatment (1) is further added with a low polymerization acrylic resin composition in the range of from 280 gr/l to 320 gr/l.
- the above-described treatment according to the present invention is referred to as “the present treatment (2)” and a product to be obtained thereby is referred to as “present product (2)”.
- anodic oxide layer is formed on the surface of aluminum or the aluminum alloy by any one of the above-described various types of treating methods
- it is recommended to impregnate silver in the anodic oxide layer by performing a treatment using a bath liquid which involves an aqueous solution further containing 10 gr/l to 30 gr/l of silver sulfate or silver nitrate, 15 gr/l to 20 gr/l of boric acid and 1 gr/l to 2 gr/l of nickel sulfate under the following conditions:
- the above-described treatment according to the present invention is referred to as “the present treatment (3)” and a product to be obtained thereby is referred to as “present product (3)”.
- the above-described object according to the present invention can be attained by a method for forming an anodic oxide layer on a surface of aluminum or an aluminum alloy which is characterized in that an anodic oxide layer having a thickness of 300 ⁇ m to 600 ⁇ m is formed on a surface of aluminum or an aluminum alloy by any one of the above-described various treating methods and, after the above-described silver impregnation is performed on the layer, a surface layer was removed by polishing by a thickness of 50 ⁇ m to 100 ⁇ m and, then, an ultra-hard flat surface is obtained.
- reference numeral 1 denotes an electrolyte bath
- reference numeral 2 denotes an AC power supply
- reference numeral 3 denotes an aluminum or aluminum alloy member to be treated by the method according to the present invention
- reference numeral 4 denotes a non-consumable electrode such as carbon or graphite
- reference numeral 5 denotes a bath liquid involving a predetermined electrolytic solution.
- the present treatment (1) performs an anodic oxidation treatment by using a device as shown in FIG. 1 and an aqueous solution containing 250 gr/l to 350 gr/l of sulfuric acid, 15 gr/l to 25 gr/l of nickel sulfate as a bath liquid under the following conditions:
- the present invention is entirely different from the conventional method in the point that the anodic oxidation treatment is performed under the treating conditions of a high sulfuric acid ion concentration, a low temperature and a high current density.
- Nickel sulfate is added for the purpose of enhancing hardness of the layer to be formed.
- a desired anodic oxide layer can be formed by using any one of above-described bath liquids and adopting the following conditions:
- a desired anodic oxide layer can be formed by adopting the following conditions:
- the present invention When the present invention to be constituted as described above is compared with a conventional method, the present invention has such advantages as described below.
- an aluminum material or an aluminum alloy material on which an anodic oxide layer is formed by the method according to the present invention can favorably be utilized in a wide field, for example, as a tray for ice-making or unfreezing, a rice cooker, a pan, a kettle, a teakettle and other cooking devices for heating, an instantaneous hot-water heater, a heat exchanger, an air-conditioner, a freezer, a refrigerator, an oil heater, a radiator, a cooling fin, an air- or water-cooled engine (acceleration of heat release), a wing of an airplane (de-icing), a heat sink for a semiconductor, a semiconductor package, a heat pipe, a bearing, various types of sliding members, a brake shoe, a manufacturing apparatus for popcorn or ice-cream, a chassis for an electric apparatus, a casing for a motor; an electric transformer or the like.
- the anodic oxidation treatment is performed by using a bath liquid in which the bath liquid used in the above-described present treatment (1) is further added with a low polymerization acrylic resin composition in the range of from 280 gr/l to 320 gr/l.
- the low polymerization acrylic resin composition to be added for example, an article containing, based on percentages, 68% of hydroxypropyl methacrylate, 10% of neopentyl glycol dimethacrylate, 19.5% of polypropylene glycol methacrylate, 1% of 1,6-hexanediol diglycidyl ether, 1% of butyl peroxyoctoate, 500 ppm of hydroquinone monmethyl ether and 0.3% of dicyandiamide is favorably used.
- tartaric acid for the purpose of prevention of "burning", it is recommended to further add tartaric acid to the above-described bath liquid in the range of from 5 gr/l to 15 gr/l.
- an oxide layer which is a composite of aluminum oxide and the acrylic resin composition is formed. Namely, a metallurgical porous oxide layer and the acrylic resin composition are acid-ionized and polymerized therebetween and, then, form a tough and dense composite layer to thereby enhance corrosion resistance and abrasion resistance to a great extent. Further, since the layer is formed while drawing out a gas in a pinhole portion, the layer has characteristics such that pinholes are small in number and, further, since the oxide layer is slowly formed at a low temperature, it is excellent in density and, since the layer is hard to be peeled off, it can be subjected to machining and a surface roughness thereof remains unchanged.
- the anodic oxide layer obtained by the present treatment (2) is now explained with reference to an enlarged cross-sectional view showing a layer portion of FIG. 2.
- reference numeral 21 denotes an aluminum material or aluminum alloy material as a base metal
- reference numeral 22 denotes an anodic oxide layer
- reference numeral 23 denotes a barrier layer
- reference numeral 24 denotes a porous layer portion
- reference numeral 25 denotes an acrylic resin composition layer portion.
- the anodic oxide layer 22 involves a barrier layer 23 formed on the aluminum material or aluminum alloy material 22, a porous layer portion 24 formed thereon and an acrylic resin composition layer portion 25 which is impregnated inside the porous layer and fixed therein.
- a tough and dense composite layer is formed.
- the composite layer as a portion thereof is closer to the barrier layer 23, the portion comes to have a higher hardness and becomes denser and, as described below, by removing a region close to a surface by machining, the surface having a further higher hardness can be obtained.
- the present treatment (3) is performed, after the anodic oxide layer is formed on a surface of an aluminum or aluminum alloy by any one of the above-described various types of treating methods, it is characterized in that silver is impregnated in the anodic oxide layer by performing an anodic oxidation treatment using a bath liquid which involves an aqueous solution further containing 10 gr/l to 30 gr/l of silver sulfate or silver nitrate, 15 gr/l to 20 gr/l of boric acid and 1 gr/l to 2 gr/l of nickel sulfate under the following conditions:
- Boric acid is added mainly for adjustment of electric conductivity of the electrolytic solution.
- a silver ion is deeply impregnated inside the porous anodic oxide layer (electrolytically impregnated by alternating voltage) and, then, combines with aluminum oxide, to thereby form a tough dense composite layer.
- the surface layer excellent in the heat conductance, the corrosion resistance, the abrasion resistance, the antibiotic action and the like can be formed.
- the surface layer has the electric conductance and has a small coefficient of friction and a small color change in time.
- the layer has effects such as far-infrared emission, removal of static electricity and the like.
- Such present treatment (3) can be performed on all types of aluminum material and aluminum alloy material and can form a thick layer having various types of excellent characteristics as described above on the surface thereof.
- an anodic oxide layer having a thickness of 300 ⁇ m to 600 ⁇ m is formed on a surface of aluminum or an aluminum alloy by the above-described various types of treating methods and, then, further, the above-described silver impregnation is performed and, thereafter, a surface layer is removed by polishing in a depth of from 50 to 100 ⁇ m from the surface and, subsequently, an aluminum material or aluminum alloy material having a ultra-hard smooth surface can be provided.
- a surface hardness is high and is about 450 to about 500 in terms of Vicker's hardness.
- a lower layer is denser than the surface and is higher in hardness.
- the heat conductivity of the present product is higher than that of aluminum as a base metal and is comparable with that of copper.
- This property shows that the present product is excellent as a raw material for various types of heat transfer members, diathermal members, heat releasing members.
- the hardness (Hv) that of aluminum is 80, that of stainless steel is 200, that of the present product is 450. Accordingly, the hardness of the present product is more than twice that of stainless steal.
- the upper temperature limit (°C) that of polytetrafluoro-ethylene is 260°C; that of aluminum is 660°C; and that of the surface layer of the present product is 800°C.
- the present product can provide a flame-retardant shutter, heat-resistant wall material and the like.
- an abrasion amount of the present product was one tenth the abrasion amount of ordinary hard-type alumite.
- the abrasion test was conducted by arranging a test piece to be in a rotating side and a resin-type oil-less bearing material in a fixing side. Testing conditions were as follows: vibration speed: 1m/s; face pressure 20 kgf/cm 2 ; and test duration: 3 hours. As a result, the abrasion amount of the hard-type alumite was 2.5 ⁇ m while that of the present product was 0.25 ⁇ m.
- a wear coefficient was measured by arranging the test piece to be in a rotating side and a resin-type oil-less bearing material in a fixing side. A load at the time the wear coefficient showed an abrupt increase was evaluated as a critical load of the burning-down.
- the critical load of the ordinary hard-type alumite was 160 kgf/cm 2
- that of the present product was 320 kgf/cm 2 .
- TUFRAM trademark: a product prepared by subjecting hard-type alumite to a sintering treatment and, then, impregnating the resultant alumite with polytetrafluoroethylene.
- an aluminum material or an aluminum alloy material on which an anodic oxide layer is formed by the method according to the present invention can favorably be utilized in a wide field, for example, as a tray for ice-making or unfreezing, a rice cooker, a pan, a kettle, a teakettle and other cooking devices for heating, an instantaneous hot-water heater, a heat exchanger, an air-conditioner, a freezer, a refrigerator, an oil heater, a radiator, a cooling fin, an air- or water-cooled engine (acceleration of heat release), a wing of an airplane (de-icing), a heat sink for a semiconductor a semiconductor package, a heat pipe, a bearing, various types of sliding members, a brake shoe, a manufacturing apparatus for popcorn or ice-cream, a chassis for an electric apparatus, a casing for a motor, an electric transformer or the like.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laminated Bodies (AREA)
- ing And Chemical Polishing (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003022682 | 2003-01-30 | ||
JP2003022682 | 2003-01-30 | ||
PCT/JP2004/000684 WO2004067807A1 (fr) | 2003-01-30 | 2004-01-27 | Procede de fabrication d'un revetement d'oxyde anodique sur une surface d'aluminium ou d'alliage d'aluminium |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1593758A1 true EP1593758A1 (fr) | 2005-11-09 |
EP1593758A4 EP1593758A4 (fr) | 2006-11-29 |
Family
ID=32820698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04705515A Withdrawn EP1593758A4 (fr) | 2003-01-30 | 2004-01-27 | Procede de fabrication d'un revetement d'oxyde anodique sur une surface d'aluminium ou d'alliage d'aluminium |
Country Status (11)
Country | Link |
---|---|
US (1) | US20070267299A1 (fr) |
EP (1) | EP1593758A4 (fr) |
JP (1) | JP4069135B2 (fr) |
KR (1) | KR20050103284A (fr) |
CN (1) | CN1745200A (fr) |
AU (1) | AU2004207220A1 (fr) |
BR (1) | BRPI0407080A (fr) |
CA (1) | CA2514271A1 (fr) |
MX (1) | MXPA05008032A (fr) |
TW (1) | TW200417635A (fr) |
WO (1) | WO2004067807A1 (fr) |
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CN102888643B (zh) * | 2011-07-18 | 2015-09-02 | 汉达精密电子(昆山)有限公司 | 铝合金硬质阳极氧化电解液及方法 |
WO2013011635A1 (fr) | 2011-07-21 | 2013-01-24 | 国立大学法人東北大学 | Rotor à vis destiné à une pompe d'évacuation de gaz, procédé de fabrication de ce rotor, pompe d'évacuation de gaz munie dudit rotor à vis, et procédé de fabrication et procédé d'assemblage de cette pompe |
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JP2013211523A (ja) * | 2012-03-02 | 2013-10-10 | Canon Components Inc | フレキシブル回路基板 |
JP6029764B2 (ja) * | 2013-08-30 | 2016-11-24 | 富士フイルム株式会社 | 金属充填微細構造体の製造方法 |
CN103498179B (zh) * | 2013-10-22 | 2014-08-06 | 哈尔滨三泳金属表面技术有限公司 | 一种铝或铝合金表面氧化膜及其制备方法 |
CN105530785B (zh) | 2014-12-26 | 2016-11-23 | 比亚迪股份有限公司 | 一种形成有天线槽的电子产品金属壳体及其制备方法 |
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CN107448638A (zh) * | 2017-09-20 | 2017-12-08 | 乐清市牵引机电厂 | 一种球形铝阀芯、球阀以及球形铝阀芯制造工艺 |
CN107937953B (zh) * | 2017-12-12 | 2019-10-25 | 北京小米移动软件有限公司 | 铝合金壳体及其制备方法 |
JP7204153B2 (ja) * | 2018-09-28 | 2023-01-16 | 三菱ケミカル株式会社 | 抗菌性積層体、及び抗菌性積層体の製造方法 |
CN111778537A (zh) * | 2020-07-06 | 2020-10-16 | 上海脉诺金属表面处理技术有限公司 | 一种抗菌防霉型铝合金的常温硬质氧化液 |
CN114260312A (zh) * | 2021-12-22 | 2022-04-01 | 福建省欧麦鑫自动化科技有限公司 | 一种高强度无菌型金属罐及其加工工艺 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1173990A (en) * | 1966-12-10 | 1969-12-10 | Langbein Pfanhauser Werke Ag | A Method of Producing Hard Oxide Films on Aluminium and its Alloys by Anodic Oxidation |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5315014B2 (fr) * | 1972-05-18 | 1978-05-22 | ||
DE2811396A1 (de) * | 1978-03-16 | 1979-09-27 | Hoechst Ag | Verfahren zur anodischen oxidation von aluminium und dessen verwendung als druckplatten-traegermaterial |
US4133725A (en) * | 1978-05-18 | 1979-01-09 | Sanford Process Corporation | Low voltage hard anodizing process |
US4225399A (en) * | 1979-04-25 | 1980-09-30 | Setsuo Tomita | High speed aluminum anodizing |
US4822458A (en) * | 1988-04-25 | 1989-04-18 | The United States Of America As Represented By The Secretary Of The Navy | Anodic coating with enhanced thermal conductivity |
JPH0297698A (ja) * | 1988-10-04 | 1990-04-10 | Minoru Mitani | アルミニウム又はその合金の表面処理方法 |
JPH02301596A (ja) * | 1989-05-16 | 1990-12-13 | Minoru Mitani | アルミニウム又はその合金の表面処理方法 |
JPH10280191A (ja) * | 1997-04-01 | 1998-10-20 | Kobe Steel Ltd | 抗菌性が優れたアルミニウム又はアルミニウム合金材及びその製造方法 |
JP2001152391A (ja) * | 1999-11-25 | 2001-06-05 | Soken:Kk | アルミニウム並びにアルミニウム合金の表面処理法 |
DE10033434A1 (de) * | 2000-07-10 | 2002-01-24 | Basf Ag | Verfahren zur Herstellung von goldfarbenen Oberflächen von Aluminium oder Aluminium-Legierungen mittels silbersalzhaltigen Formulierungen |
ITTO20010149A1 (it) * | 2001-02-20 | 2002-08-20 | Finmeccanica S P A Alenia Aero | Procedimento di anodizzazione a basso impatto ecologico di un pezzo di alluminio o leghe di alluminio. |
US20080274375A1 (en) * | 2007-05-04 | 2008-11-06 | Duracouche International Limited | Anodizing Aluminum and Alloys Thereof |
-
2004
- 2004-01-27 CN CNA2004800033090A patent/CN1745200A/zh active Pending
- 2004-01-27 BR BR0407080-1A patent/BRPI0407080A/pt not_active IP Right Cessation
- 2004-01-27 CA CA002514271A patent/CA2514271A1/fr not_active Abandoned
- 2004-01-27 EP EP04705515A patent/EP1593758A4/fr not_active Withdrawn
- 2004-01-27 JP JP2005504706A patent/JP4069135B2/ja not_active Expired - Fee Related
- 2004-01-27 KR KR1020057013998A patent/KR20050103284A/ko not_active Application Discontinuation
- 2004-01-27 MX MXPA05008032A patent/MXPA05008032A/es unknown
- 2004-01-27 AU AU2004207220A patent/AU2004207220A1/en not_active Abandoned
- 2004-01-27 WO PCT/JP2004/000684 patent/WO2004067807A1/fr active Application Filing
- 2004-01-27 US US10/542,533 patent/US20070267299A1/en not_active Abandoned
- 2004-01-29 TW TW093101996A patent/TW200417635A/zh unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1173990A (en) * | 1966-12-10 | 1969-12-10 | Langbein Pfanhauser Werke Ag | A Method of Producing Hard Oxide Films on Aluminium and its Alloys by Anodic Oxidation |
Non-Patent Citations (2)
Title |
---|
DATABASE CA [Online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; XUE, FANGQIN ET AL: "Discussion on the anodization process for porcelain-like film on Al alloy" XP002401351 retrieved from STN Database accession no. 138:157048 & DIANDU YU HUANBAO , 22(2), 25-26 CODEN: DYHUEU; ISSN: 1000-4742, 2002, * |
See also references of WO2004067807A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109943873A (zh) * | 2017-12-21 | 2019-06-28 | 李文熙 | 电镀金属前处理的厚膜铝电极 |
Also Published As
Publication number | Publication date |
---|---|
BRPI0407080A (pt) | 2006-01-24 |
WO2004067807A1 (fr) | 2004-08-12 |
CN1745200A (zh) | 2006-03-08 |
AU2004207220A1 (en) | 2004-08-12 |
MXPA05008032A (es) | 2006-01-27 |
CA2514271A1 (fr) | 2004-08-12 |
JPWO2004067807A1 (ja) | 2006-05-18 |
JP4069135B2 (ja) | 2008-04-02 |
EP1593758A4 (fr) | 2006-11-29 |
KR20050103284A (ko) | 2005-10-28 |
US20070267299A1 (en) | 2007-11-22 |
TW200417635A (en) | 2004-09-16 |
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