US3915811A - Method and composition for electroplating aluminum alloys - Google Patents
Method and composition for electroplating aluminum alloys Download PDFInfo
- Publication number
- US3915811A US3915811A US515129A US51512974A US3915811A US 3915811 A US3915811 A US 3915811A US 515129 A US515129 A US 515129A US 51512974 A US51512974 A US 51512974A US 3915811 A US3915811 A US 3915811A
- Authority
- US
- United States
- Prior art keywords
- acid
- article
- acetic acid
- anodizing
- weight
- 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.)
- Expired - Lifetime
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009713 electroplating Methods 0.000 title claims description 18
- 239000000203 mixture Substances 0.000 title abstract description 15
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 42
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 38
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000007743 anodising Methods 0.000 claims abstract description 34
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims abstract description 30
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims abstract description 26
- 150000007524 organic acids Chemical class 0.000 claims abstract description 19
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 18
- 229960002449 glycine Drugs 0.000 claims abstract description 15
- 229960004275 glycolic acid Drugs 0.000 claims abstract description 13
- 235000013905 glycine and its sodium salt Nutrition 0.000 claims abstract description 12
- 229960000583 acetic acid Drugs 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims description 12
- 238000004070 electrodeposition Methods 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 150000001413 amino acids Chemical class 0.000 claims description 2
- 150000001261 hydroxy acids Chemical class 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims 3
- 150000002763 monocarboxylic acids Chemical class 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 52
- 229910052759 nickel Inorganic materials 0.000 abstract description 26
- 239000004471 Glycine Substances 0.000 abstract description 3
- 230000003750 conditioning effect Effects 0.000 abstract description 3
- 230000001143 conditioned effect Effects 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 12
- -1 aliphatic mono carboxylic acid Chemical class 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 238000007747 plating Methods 0.000 description 9
- 238000011282 treatment Methods 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 7
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 150000001412 amines Chemical class 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 239000002659 electrodeposit Substances 0.000 description 3
- 230000001464 adherent effect Effects 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- GOLORTLGFDVFDW-UHFFFAOYSA-N 3-(1h-benzimidazol-2-yl)-7-(diethylamino)chromen-2-one Chemical compound C1=CC=C2NC(C3=CC4=CC=C(C=C4OC3=O)N(CC)CC)=NC2=C1 GOLORTLGFDVFDW-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- MIMUSZHMZBJBPO-UHFFFAOYSA-N 6-methoxy-8-nitroquinoline Chemical compound N1=CC=CC2=CC(OC)=CC([N+]([O-])=O)=C21 MIMUSZHMZBJBPO-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 235000001671 coumarin Nutrition 0.000 description 1
- 229960000956 coumarin Drugs 0.000 description 1
- GICLSALZHXCILJ-UHFFFAOYSA-N ctk5a5089 Chemical compound NCC(O)=O.NCC(O)=O GICLSALZHXCILJ-UHFFFAOYSA-N 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
- C25D5/44—Aluminium
-
- 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
Definitions
- ABSTRACT A method of and a bath composition for conditioning the surface of an aluminum alloy article to substantially increase the adhesion to the conditioned surface of subsequently applied electrodeposited surface layer. More specifically the surface of the article is anodized in a solution having three components, i.e. phosphoric acid, sulfuric acid and an organic acid selected from the group consisting of acetic acid, hydroxy acetic acid and amino acetic acid (glycine).
- the anodizing operation typically is followed by a nickel strike deposit, and this deposit may be subsequently electroplated under conventional operating conditions.
- bumpers and other exterior automotive components be made from aluminum alloys, particularly alloys from the 7000 series.
- Such alloys generally have the following typical analyses:
- Such aluminum alloy components must be finished by electroplating with nickel-chromium or similar bright plating. Yet conventional electroplating techniques do not form completely adherent electrodeposited layers on such alloys.
- adherent electrodeposited layers can be formed on such alloys by initially anodizing the aluminum surface in an anodizing bath containing a mixture of phosphoric acid, sulfuric acid, and an organic acid.
- the surface of the aluminum alloy which is to be electroplated is first cleaned, acid etched and then rinsed.
- the article surface is anodized in a three component bath containing from about to about 12% H PO plus from about 0.4% to about 2.0% H 50 plus from about 1% to about 7% of an aliphatic mono carboxylic acid or a hydroxy or amino derivative of such an acid having a solubility of at least 10 grams per liter in the inorganic acid mixture.
- the three component bath contains, as a preferred ingredient, and in addition to the phosphoric acid and the sulfuric acid, from about 1% to about 7% of an organic acid selected from the group consisting of acetic acid, hydroxy acetic acid, and amino acetic acid.
- anodizing treatment proposed by the present invention is a preliminary or conditioning treatment intended primarily for utilization as an undercoating for a subsequently applied electrodeposited final layer or coating.
- the present treatment differs substantially from the earlier proposed anodizing treatments which are intended to form integral colored anodic coatings on the surface of aluminum or its alloys.
- a final hard coat is provided by anodizing aluminum or its alloys in a bath containing a mineral acid, an organic acid, and organic acid salts.
- mixtures of either sulfuric acid or phosphoric acid together with certain organic acids have been proposed to achieve a hard, dense, anodic coating as a final surface treatment in U.S. Pat. No. 3,524,799.
- the baths are utilized as totally different concentrations than in the present invention and for entirely different purposes. Also it has been proposed in US. Pat. No. 3,349,014
- the anodizing conditions of the present invention typically carry out the treatment at a temperature of from about to about F., at a voltage of from 25 to 30 volts and at a current density of from about 15 to about .20 amperes per square foot for a period of time of from about 5 to about 10 minutes.
- the surface is subsequently plated with nickel and chromium or with any other surface treatment which may be desired.
- the surface may be plated with one mil of semi-bright nickel, 0.5 mils of bright nickel, or 0.01 mils of chromium.
- the resulting deposit is uniformly bright and smooth, and the adhesion of the final electrodeposition to the surface is excellent.
- Another important object of the present invention is to provide a bath composition for subjecting an aluminum surface to a pre-electrodeposition treatment, the bath containing from about 5% to about 12% phosphoric acid, from about 0.4 to about 2% sulfuric acid, and from about 1 to about 7% of an organic acid selected from the group consisting of aliphatic mono carboxylic acids, hydroxy derivatives and amino derivatives of such acids having a solubility of at least 10 grams per liter in the phosphoric and sulfuric acid mixture.
- the present invention proposes a specific anodizing treatment for aluminum alloys as a pre-treatment for a subsequent plating operation. It has been found that such initial anodizing greatly increases the adherence of the subsequently applied electrodeposit to the underlying aluminum alloy surface.
- the anodizing solution consists of three components, namely phosphoric acid (H PO at a concentration of from 5 to about 12%, and at a preferred concentration of about 7%.
- the second ingredient is sulfuric acid (H 80 at a concentration ranging from about 0.4% to about 2% and at a preferred concentration of about 1%.
- the third ingredient is a saturated aliphatic mono carboxylic acid or a hydroxy derivative of such an acid or an amino derivative of such an acid, any one of these third ingredients necessarily having a solubility of at least 10 grams per liter in the acid solution.
- Preferred specific saturated aliphatic mono carboxylic acids and derivatives are acetic acid (CI-I COOH), hydroxy acetic acid (l-IOCI-I COOI-I) and glycine or amino acetic acid (Nl-I Cl-I COOI-I).
- the saturated aliphatic mono carboxylic acid or its derivative is present in an amount ranging from about 1% to about 7% of the solution with a preferred composition containing about 3.5%.
- the anodizing operation is carried out under operating conditions which generally include a temperature of from about 100F. to about 110F., and preferably 105F.; at a voltage of from about 25 to 30 volts; at a current density of from about to about amperes per square foot, and for a period of time of from about 5 to about 10 minutes, preferably for a period of about 7 to 8 minutes.
- the surface must be initially cleaned, which can be carried out by either soaking or by power spraying with an alkaline solution or by any other preferred cleaning method.
- the surface is rinsed and preferably is acid etched. This etching is carried out at room temperature for a sufficient period of time, on the order of 1.5 to 2 minutes and the etching solution preferably contains 50% by volume nitric acid (HNO and 50 grams per liter of ammonium bifluoride (Nl-I F-HF).
- the article to be anodized, after cleaning and etching, is immersed in the anodizing solution, and a direct current is passed between the aluminum article as the anode and a cathode immersed in the solution.
- the anodizing is carried out under the conditions set forth above.
- the panel is rinsed and then plated.
- the plating can be carried out in a number of different ways.
- a nickel strike may be made from a low chloride Watts nickel bath, and subsequent plating with semi-bright nickel, bright nickel and chromium may be applied.
- the anodized article may be plated directly with nickel using a Watts nickel solution, preferably containing coumarin, to produce a semi-bright deposit, followed by a bright nickel deposit. Subsequent chrome plating onto the bright nickel deposit results in an adhesive, integral, composite electrodeposited layer.
- the panel was rinsed and plated in a low chloride Watts nickel strike containing 2 ounces per gallon of NiCL .6I-I O. This operation was carried out at a pH of 4.5, at 105F. for 5 minutes. After the nickel strike, the panel was subsequently plated with 1 mil of semibright nickel, 0.5 mils of bright nickel, and 0.01 mils of chromium. The resulting deposit was uniformly bright and smooth, and the adhesion of the total electrodeposit to the panel was excellent.
- EXAMPLE II A 6 inch by 4 inch aluminum panel of 7046 alloy was cleaned, rinsed and etched as explained in Example I.
- the bath was operated at 25 volts and at a current density of 15 to 20 amperes per square foot.
- the work piece was rinsed with water and plated directly with nickel.
- An initial plate was made from a Watts nickel solution containing coumarin to produce a semi-bright deposit which constituted of the total desired nickel deposit. Following the semi-bright deposit, a bright nickel deposit was made incorporating the remaining 30% of the total nickel deposit. After nickel plating, the work piece was rinsed with water and chromium plated.
- Example III The procedure of Example I was followed except that the aqueous anodizing solution had a volumetric composition comprising 7% I-I PO 1% H and 50.0 g/l of amino acetic acid.
- the panel was then anodized for 6 minutes at a temperature of F. at a constant potential of 25 volts.
- the panel was next rinsed and placed in a low chloride (2 oz/gal NiCl .6I-I O) Watts nickel strike for 5 minutes at a pH of 4.5 and 105F. After the nickel strike, the panel was plated with one mil of acid copper, 0.5 mils of bright nickel, and 0.01 mils of chromium. The resulting deposit was uniformly bright and smooth, and the adhesion of the total electrodeposit was excellent.
- the present invention provides a new, novel, and effective processing cycle for the plating of aluminum alloys, particularly aluminum alloys of the 7000 series.
- the processing cycle includes the anodizing of the aluminum surface which is subsequently electroplated, this anodizing treatment being carried out as a preliminary to the final electroplating operation.
- the method of electroplating articles made from aluminum alloys having a zinc content of at least 3% by weight and a copper content of not more than about 1.2% by weight comprising the steps of acid etching the surface of the article, anodizing the article in a three component aqueous bath containing from about 5% to about 12% phosphoric acid, from about 0.4% to about 2% sulfuric acid, and from about 1 to 7% of an organic acid selected from the group consisting of a saturated aliphatic mono carboxylic acid, saturated aliphatic mono carboxylic amino acids and saturated aliphatic mono carboxylic hydroxy acids, the organic acid being sufficiently soluble in the bath to provide at least 10 grams per liter, and electroplating the anodized article.
- organic acid ingredient is selected from the group consisting of acetic acid, hydroxy acetic acid and amino acetic acid.
- a method of electroplating an article made from an aluminum alloy having a zince content of at least 3% by weight and a copper content of not more than about 1.2% by weight the improvement of anodizing the article as a pre-plate prior to electrodeposition by the steps of (l) placing the article as an anode in an aqueous bath consisting essentially of from about 5% to about 12% phosphoric acid, from about 0.40% to about 2% sulfuric acid, and from about 1% to about 7% of an organic acid selected from the group consisting of acetic acid, hydroxy acetic acid, and amino acetic acid, and (2) anodizing the article at a temperature of from about F. to F., at a voltage of from about 25 to 30 volts, and at a current density of from about 15 to about 20 amperes per square foot, for a period of time of from about 5 to about 10 minutes.
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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)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electrochemical Coating By Surface Reaction (AREA)
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US515129A US3915811A (en) | 1974-10-16 | 1974-10-16 | Method and composition for electroplating aluminum alloys |
| CA223,195A CA1043287A (en) | 1974-10-16 | 1975-03-25 | Method and composition for electroplating auminum alloys |
| FR7510318A FR2288164A1 (fr) | 1974-10-16 | 1975-04-02 | Procedes et compositions pour le revetement electrolytique d'articles ou de produits industriels en alliage d'aluminium |
| SE7503826A SE7503826L (sv) | 1974-10-16 | 1975-04-03 | Sett och komposition for elektopletering av aluminiumlegeringar |
| ES436285A ES436285A1 (es) | 1974-10-16 | 1975-04-03 | Mejoras introducidas en un metodo de electrochapado de arti-culos de aleaciones de aluminio. |
| IT48953/75A IT1035197B (it) | 1974-10-16 | 1975-04-07 | Metodo e bagno per placcare elettroliticamente oggetti di alluminio |
| DE19752517779 DE2517779A1 (de) | 1974-10-16 | 1975-04-22 | Verfahren und bad fuer die elektroplattierung von aluminiumlegierungen |
| NL7504952A NL7504952A (nl) | 1974-10-16 | 1975-04-25 | Werkwijze en samenstelling voor het galvanise- ren van aluminiumlegeringen. |
| BR4181/75A BR7503268A (pt) | 1974-10-16 | 1975-05-23 | Processo para eletro-revestimento de artigos formados de ligas de aluminio e banho de anodizacao empregado no processo |
| GB22802/75A GB1506184A (en) | 1974-10-16 | 1975-05-23 | Method and composition for electroplating aluminium alloy |
| JP50071382A JPS5147549A (https=) | 1974-10-16 | 1975-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US515129A US3915811A (en) | 1974-10-16 | 1974-10-16 | Method and composition for electroplating aluminum alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3915811A true US3915811A (en) | 1975-10-28 |
Family
ID=24050086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US515129A Expired - Lifetime US3915811A (en) | 1974-10-16 | 1974-10-16 | Method and composition for electroplating aluminum alloys |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3915811A (https=) |
| JP (1) | JPS5147549A (https=) |
| BR (1) | BR7503268A (https=) |
| CA (1) | CA1043287A (https=) |
| DE (1) | DE2517779A1 (https=) |
| ES (1) | ES436285A1 (https=) |
| FR (1) | FR2288164A1 (https=) |
| GB (1) | GB1506184A (https=) |
| IT (1) | IT1035197B (https=) |
| NL (1) | NL7504952A (https=) |
| SE (1) | SE7503826L (https=) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049504A (en) * | 1976-02-23 | 1977-09-20 | Polychrome Corporation | Method of producing lithographic printing plates |
| FR2472468A1 (fr) * | 1979-12-26 | 1981-07-03 | Gould Inc | Procede de production d'une couche de cuivre detachable sur un support d'aluminium et article ainsi obtenu |
| US4793903A (en) * | 1986-10-24 | 1988-12-27 | The Boeing Company | Method of cleaning aluminum surfaces |
| US4968389A (en) * | 1985-02-06 | 1990-11-06 | Fujitsu Limited | Method of forming a composite film over the surface of aluminum materials |
| US4976827A (en) * | 1984-03-16 | 1990-12-11 | Swiss Aluminium Ltd. | Process for pretreating strips and foils of aluminum or aluminum alloys |
| US5230965A (en) * | 1990-01-02 | 1993-07-27 | General Electric Company | High density interconnect with electroplated conductors |
| US5234574A (en) * | 1991-01-30 | 1993-08-10 | Sumitomo Metal Industries, Ltd. | Process for direct zinc electroplating of aluminum strip |
| US5245847A (en) * | 1991-02-07 | 1993-09-21 | Sumitomo Metal Industries, Ltd. | Process for zinc electroplating of aluminum strip |
| US5436081A (en) * | 1991-02-18 | 1995-07-25 | Sumitomo Metal Industries, Ltd. | Plated aluminum sheet having improved spot weldability |
| US5478414A (en) * | 1992-01-31 | 1995-12-26 | Aluminum Company Of America | Reflective aluminum strip, protected with fluoropolymer coating and a laminate of the strip with a thermoplastic polymer |
| EP0689096A1 (en) | 1994-06-16 | 1995-12-27 | Eastman Kodak Company | Lithographic printing plates utilizing an oleophilic imaging layer |
| US5637404A (en) * | 1992-01-31 | 1997-06-10 | Aluminum Company Of America | Reflective aluminum strip |
| US5955147A (en) * | 1992-01-31 | 1999-09-21 | Aluminum Company Of America | Reflective aluminum trim |
| US20070066503A1 (en) * | 2005-08-19 | 2007-03-22 | Mores Basaly | Methods and compositions for acid treatment of a metal surface |
| US20070105376A1 (en) * | 1993-12-14 | 2007-05-10 | Kabushiki Kaisha Toshiba | Copper-based metal polishing solution and method for manufacturing semiconductor device |
| EP1826297A3 (en) * | 2006-02-23 | 2009-05-13 | Greatbatch Ltd. | Anodizing electrolytes using a dual acid system for high voltage electrolytic capacitor anodes |
| CN102534722A (zh) * | 2011-11-28 | 2012-07-04 | 珠海市奥美伦精细化工有限公司 | 用于铝合金焊接区域、盲孔工件表面的染色前处理剂及其应用工艺 |
| CN106350849A (zh) * | 2016-09-18 | 2017-01-25 | 佛山科学技术学院 | 铝表面高吸收与低发射太阳光谱的氧化膜电沉积制备方法 |
| CN107287637A (zh) * | 2016-04-12 | 2017-10-24 | 哈尔滨飞机工业集团有限责任公司 | 一种7050铝合金的硫酸阳极化方法 |
| CN107287636A (zh) * | 2016-04-12 | 2017-10-24 | 哈尔滨飞机工业集团有限责任公司 | 一种折叠型铝合金零件的铬酸阳极化方法 |
| WO2018033862A1 (en) * | 2016-08-17 | 2018-02-22 | Hou Fengyan | Method to create thin functional coatings on light alloys |
| CN112779581A (zh) * | 2019-11-08 | 2021-05-11 | 东莞市德施普技术有限公司 | 铝表面处理方法 |
| EP4001473A1 (en) * | 2020-11-13 | 2022-05-25 | Raytheon Technologies Corporation | Mixed acid anodization |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4525247A (en) * | 1982-07-12 | 1985-06-25 | Rogers Corporation | Microwave circuit boards and method of manufacture thereof |
| DE19812951C2 (de) * | 1998-03-24 | 2002-12-19 | Heckler & Koch Gmbh | Schlagbolzensicherung im Verschluß |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1971761A (en) * | 1929-09-05 | 1934-08-28 | William J Travers | Protection of metals |
| US2473163A (en) * | 1945-06-25 | 1949-06-14 | Ewald H Mccoy | Plating nickel on aluminum |
| US3098804A (en) * | 1960-03-28 | 1963-07-23 | Kaiser Aluminium Chem Corp | Metal treatment |
| US3222266A (en) * | 1958-08-20 | 1965-12-07 | Kaiser Aluminium Chem Corp | Method of enameling anodized aluminum |
| US3349014A (en) * | 1964-08-28 | 1967-10-24 | Mc Donnell Douglas Corp | Method and composition for the treatment of an aluminum surface |
| US3524799A (en) * | 1969-06-13 | 1970-08-18 | Reynolds Metals Co | Anodizing aluminum |
| US3622473A (en) * | 1964-10-15 | 1971-11-23 | Honny Chemicals Co Ltd | Method of providing aluminum surfaces with coatings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE412098A (https=) * | 1934-11-17 |
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1974
- 1974-10-16 US US515129A patent/US3915811A/en not_active Expired - Lifetime
-
1975
- 1975-03-25 CA CA223,195A patent/CA1043287A/en not_active Expired
- 1975-04-02 FR FR7510318A patent/FR2288164A1/fr active Granted
- 1975-04-03 SE SE7503826A patent/SE7503826L/xx unknown
- 1975-04-03 ES ES436285A patent/ES436285A1/es not_active Expired
- 1975-04-07 IT IT48953/75A patent/IT1035197B/it active
- 1975-04-22 DE DE19752517779 patent/DE2517779A1/de active Pending
- 1975-04-25 NL NL7504952A patent/NL7504952A/xx not_active Application Discontinuation
- 1975-05-23 BR BR4181/75A patent/BR7503268A/pt unknown
- 1975-05-23 GB GB22802/75A patent/GB1506184A/en not_active Expired
- 1975-06-12 JP JP50071382A patent/JPS5147549A/ja active Pending
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| US2473163A (en) * | 1945-06-25 | 1949-06-14 | Ewald H Mccoy | Plating nickel on aluminum |
| US3222266A (en) * | 1958-08-20 | 1965-12-07 | Kaiser Aluminium Chem Corp | Method of enameling anodized aluminum |
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Cited By (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049504A (en) * | 1976-02-23 | 1977-09-20 | Polychrome Corporation | Method of producing lithographic printing plates |
| FR2472468A1 (fr) * | 1979-12-26 | 1981-07-03 | Gould Inc | Procede de production d'une couche de cuivre detachable sur un support d'aluminium et article ainsi obtenu |
| US4293617A (en) * | 1979-12-26 | 1981-10-06 | Gould Inc. | Process for producing strippable copper on an aluminum carrier and the article so obtained |
| US4976827A (en) * | 1984-03-16 | 1990-12-11 | Swiss Aluminium Ltd. | Process for pretreating strips and foils of aluminum or aluminum alloys |
| US4968389A (en) * | 1985-02-06 | 1990-11-06 | Fujitsu Limited | Method of forming a composite film over the surface of aluminum materials |
| US4793903A (en) * | 1986-10-24 | 1988-12-27 | The Boeing Company | Method of cleaning aluminum surfaces |
| US5230965A (en) * | 1990-01-02 | 1993-07-27 | General Electric Company | High density interconnect with electroplated conductors |
| US5234574A (en) * | 1991-01-30 | 1993-08-10 | Sumitomo Metal Industries, Ltd. | Process for direct zinc electroplating of aluminum strip |
| US5245847A (en) * | 1991-02-07 | 1993-09-21 | Sumitomo Metal Industries, Ltd. | Process for zinc electroplating of aluminum strip |
| US5436081A (en) * | 1991-02-18 | 1995-07-25 | Sumitomo Metal Industries, Ltd. | Plated aluminum sheet having improved spot weldability |
| US5478414A (en) * | 1992-01-31 | 1995-12-26 | Aluminum Company Of America | Reflective aluminum strip, protected with fluoropolymer coating and a laminate of the strip with a thermoplastic polymer |
| US5637404A (en) * | 1992-01-31 | 1997-06-10 | Aluminum Company Of America | Reflective aluminum strip |
| US5955147A (en) * | 1992-01-31 | 1999-09-21 | Aluminum Company Of America | Reflective aluminum trim |
| US20070105376A1 (en) * | 1993-12-14 | 2007-05-10 | Kabushiki Kaisha Toshiba | Copper-based metal polishing solution and method for manufacturing semiconductor device |
| EP0689096A1 (en) | 1994-06-16 | 1995-12-27 | Eastman Kodak Company | Lithographic printing plates utilizing an oleophilic imaging layer |
| US8518286B2 (en) | 2005-08-19 | 2013-08-27 | Houghton Technical Corp. | Methods and compositons for acid treatment of a metal surface |
| US10260153B2 (en) | 2005-08-19 | 2019-04-16 | Houghton Technical Corp. | Methods and compositions for acid treatment of a metal surface |
| US9732428B2 (en) | 2005-08-19 | 2017-08-15 | Houghton Technical Corp. | Methods and compositions for acid treatment of a metal surface |
| US20090090635A1 (en) * | 2005-08-19 | 2009-04-09 | Houghton Metal Finishing Company | Methods and compositions for acid treatment of a metal surface |
| US8252195B2 (en) | 2005-08-19 | 2012-08-28 | Houghton Technical Corp. | Methods and compositions for acid treatment of a metal surface |
| US20070066503A1 (en) * | 2005-08-19 | 2007-03-22 | Mores Basaly | Methods and compositions for acid treatment of a metal surface |
| EP1826297A3 (en) * | 2006-02-23 | 2009-05-13 | Greatbatch Ltd. | Anodizing electrolytes using a dual acid system for high voltage electrolytic capacitor anodes |
| CN102534722B (zh) * | 2011-11-28 | 2014-09-10 | 珠海市奥美伦精细化工有限公司 | 用于铝合金焊接区域、盲孔工件表面的染色前处理剂及其应用工艺 |
| CN102534722A (zh) * | 2011-11-28 | 2012-07-04 | 珠海市奥美伦精细化工有限公司 | 用于铝合金焊接区域、盲孔工件表面的染色前处理剂及其应用工艺 |
| CN107287637A (zh) * | 2016-04-12 | 2017-10-24 | 哈尔滨飞机工业集团有限责任公司 | 一种7050铝合金的硫酸阳极化方法 |
| CN107287636A (zh) * | 2016-04-12 | 2017-10-24 | 哈尔滨飞机工业集团有限责任公司 | 一种折叠型铝合金零件的铬酸阳极化方法 |
| CN107287636B (zh) * | 2016-04-12 | 2019-05-14 | 哈尔滨飞机工业集团有限责任公司 | 一种折叠型铝合金零件的铬酸阳极化方法 |
| WO2018033862A1 (en) * | 2016-08-17 | 2018-02-22 | Hou Fengyan | Method to create thin functional coatings on light alloys |
| CN110114517B (zh) * | 2016-08-17 | 2022-12-13 | 席勒斯材料科学有限公司 | 在轻合金上生成薄功能涂层的方法 |
| AU2017314185B2 (en) * | 2016-08-17 | 2022-07-14 | Cirrus Materials Science Limited | Method to create thin functional coatings on light alloys |
| KR20190066004A (ko) * | 2016-08-17 | 2019-06-12 | 씨러스 매터리얼즈 사이언스 리미티드 | 경합금 상에 얇은 기능성 코팅을 생성하는 방법 |
| CN110114517A (zh) * | 2016-08-17 | 2019-08-09 | 席勒斯材料科学有限公司 | 在轻合金上生成薄功能涂层的方法 |
| US10519562B2 (en) | 2016-08-17 | 2019-12-31 | Auckland Uniservices Limited | Method to create thin functional coatings on light alloys |
| CN106350849A (zh) * | 2016-09-18 | 2017-01-25 | 佛山科学技术学院 | 铝表面高吸收与低发射太阳光谱的氧化膜电沉积制备方法 |
| CN106350849B (zh) * | 2016-09-18 | 2019-03-05 | 佛山科学技术学院 | 铝表面高吸收与低发射太阳光谱的氧化膜电沉积制备方法 |
| EP3819409A1 (en) * | 2019-11-08 | 2021-05-12 | Dongguan DSP Technology Co., Ltd. | Method for the surface treatment of aluminum |
| KR20210056921A (ko) * | 2019-11-08 | 2021-05-20 | 동관 디에스피 테크놀러지 코.,엘티디. | 알루미늄 표면 처리 방법 |
| CN112779581B (zh) * | 2019-11-08 | 2022-05-17 | 东莞市德施普技术有限公司 | 铝表面处理方法 |
| US11332842B2 (en) * | 2019-11-08 | 2022-05-17 | Dongguan DSP Technology Co., Ltd. | Aluminum surface treatment method |
| CN112779581A (zh) * | 2019-11-08 | 2021-05-11 | 东莞市德施普技术有限公司 | 铝表面处理方法 |
| EP4001473A1 (en) * | 2020-11-13 | 2022-05-25 | Raytheon Technologies Corporation | Mixed acid anodization |
| US12134828B2 (en) | 2020-11-13 | 2024-11-05 | Rtx Corporation | Mixed acid anodization |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5147549A (https=) | 1976-04-23 |
| FR2288164A1 (fr) | 1976-05-14 |
| IT1035197B (it) | 1979-10-20 |
| CA1043287A (en) | 1978-11-28 |
| BR7503268A (pt) | 1976-10-05 |
| SE7503826L (sv) | 1976-04-20 |
| ES436285A1 (es) | 1977-05-16 |
| DE2517779A1 (de) | 1976-04-22 |
| GB1506184A (en) | 1978-04-05 |
| FR2288164B1 (https=) | 1979-06-29 |
| NL7504952A (nl) | 1976-04-21 |
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| AS | Assignment |
Owner name: HOOKER CHEMICALS & PLASTICS CORP. Free format text: MERGER;ASSIGNOR:OXY METAL INDUSTRIES CORPORATION;REEL/FRAME:004075/0885 Effective date: 19801222 |
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