US3692644A - Self-coloring anodic oxidation of aluminum and its alloys - Google Patents
Self-coloring anodic oxidation of aluminum and its alloys Download PDFInfo
- Publication number
- US3692644A US3692644A US849503A US3692644DA US3692644A US 3692644 A US3692644 A US 3692644A US 849503 A US849503 A US 849503A US 3692644D A US3692644D A US 3692644DA US 3692644 A US3692644 A US 3692644A
- Authority
- US
- United States
- Prior art keywords
- anodic
- compartment
- cathodic
- acid
- anodic oxidation
- 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
Links
- 230000003647 oxidation Effects 0.000 title abstract description 17
- 238000007254 oxidation reaction Methods 0.000 title abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 title abstract description 10
- 239000000956 alloy Substances 0.000 title abstract description 8
- 229910045601 alloy Inorganic materials 0.000 title abstract description 8
- 238000004040 coloring Methods 0.000 title description 13
- 239000002244 precipitate Substances 0.000 abstract description 12
- 239000003792 electrolyte Substances 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 239000008151 electrolyte solution Substances 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 6
- 239000007864 aqueous solution Substances 0.000 abstract description 4
- 239000004411 aluminium Substances 0.000 abstract 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 21
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 238000000354 decomposition reaction Methods 0.000 description 12
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 10
- 239000011976 maleic acid Substances 0.000 description 10
- 239000011148 porous material Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 8
- 230000032683 aging Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 235000006408 oxalic acid Nutrition 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- -1 for instance Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 3
- 150000001735 carboxylic acids Chemical class 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007933 aliphatic carboxylic acids Chemical group 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/14—Producing integrally coloured layers
-
- 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
- C25D11/005—Apparatus specially adapted for electrolytic conversion coating
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/20—Electrolytic after-treatment
- C25D11/22—Electrolytic after-treatment for colouring layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/002—Cell separation, e.g. membranes, diaphragms
Definitions
- porous baflie is made out of a material resisting the corrosive action of the electrolytic system used.
- porous baffles made of plastic material, for instance of polyethylene or of glass or of a ceramic material.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrolytic Production Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2017768 | 1968-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3692644A true US3692644A (en) | 1972-09-19 |
Family
ID=32894116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US849503A Expired - Lifetime US3692644A (en) | 1968-08-14 | 1969-08-12 | Self-coloring anodic oxidation of aluminum and its alloys |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3692644A (cs) |
| BE (1) | BE737466A (cs) |
| CH (1) | CH523332A (cs) |
| DE (1) | DE1941394A1 (cs) |
| FR (1) | FR2015658A1 (cs) |
| GB (1) | GB1274104A (cs) |
| LU (1) | LU59284A1 (cs) |
| NL (1) | NL6912194A (cs) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080274375A1 (en) * | 2007-05-04 | 2008-11-06 | Duracouche International Limited | Anodizing Aluminum and Alloys Thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE754994A (fr) * | 1969-10-08 | 1971-02-01 | Vaw Ver Aluminium Werke Ag | Procede d'anodisation coloree des alliages |
-
1969
- 1969-08-11 NL NL6912194A patent/NL6912194A/xx unknown
- 1969-08-12 US US849503A patent/US3692644A/en not_active Expired - Lifetime
- 1969-08-13 BE BE737466D patent/BE737466A/xx unknown
- 1969-08-13 FR FR6927933A patent/FR2015658A1/fr not_active Withdrawn
- 1969-08-13 LU LU59284D patent/LU59284A1/xx unknown
- 1969-08-14 CH CH1236269A patent/CH523332A/de not_active IP Right Cessation
- 1969-08-14 DE DE19691941394 patent/DE1941394A1/de active Pending
- 1969-08-14 GB GB40593/69D patent/GB1274104A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080274375A1 (en) * | 2007-05-04 | 2008-11-06 | Duracouche International Limited | Anodizing Aluminum and Alloys Thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CH523332A (de) | 1972-05-31 |
| GB1274104A (en) | 1972-05-10 |
| BE737466A (cs) | 1970-02-13 |
| DE1941394A1 (de) | 1970-07-16 |
| LU59284A1 (cs) | 1970-02-13 |
| FR2015658A1 (cs) | 1970-04-30 |
| NL6912194A (cs) | 1970-02-17 |
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