FR3087208B1 - SURFACE TREATMENT PROCESS OF ALUMINUM PARTS - Google Patents
SURFACE TREATMENT PROCESS OF ALUMINUM PARTS Download PDFInfo
- Publication number
- FR3087208B1 FR3087208B1 FR1859550A FR1859550A FR3087208B1 FR 3087208 B1 FR3087208 B1 FR 3087208B1 FR 1859550 A FR1859550 A FR 1859550A FR 1859550 A FR1859550 A FR 1859550A FR 3087208 B1 FR3087208 B1 FR 3087208B1
- Authority
- FR
- France
- Prior art keywords
- salt
- surface treatment
- corrosion
- equal
- composition containing
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000004381 surface treatment Methods 0.000 title abstract 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title 1
- 238000005260 corrosion Methods 0.000 abstract 3
- 230000007797 corrosion Effects 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 150000003839 salts Chemical class 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- -1 aluminate salt Chemical class 0.000 abstract 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical class [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 150000004760 silicates Chemical class 0.000 abstract 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
-
- 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
- C25D11/024—Anodisation under pulsed or modulated current or potential
-
- 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
- C25D11/026—Anodisation with spark discharge
-
- 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
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
- C25D11/24—Chemical after-treatment
- C25D11/246—Chemical after-treatment for sealing layers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
L'invention concerne un procédé de traitement de surface d'une pièce en alliage d'aluminium, qui comprend une première étape de traitement de la pièce par oxydation micro-arcs, la pièce étant immergée dans un milieu électrolytique aqueux contenant un sel de silicate à une concentration supérieure ou égale à 2 g/l et un sel d'aluminate à une concentration supérieure ou égale à 1 g/l, et étant traversée par un courant électrique ; puis une deuxième étape de traitement de la pièce par mise en contact de la pièce successivement avec une première composition aqueuse contenant un sel métallique inhibiteur de corrosion, à l'exclusion d'un sel de chrome hexavalent, et un composé oxydant, puis une deuxième composition aqueuse contenant un sel de terre rare inhibiteur de corrosion et un composé oxydant. La pièce ainsi traitée présente une résistance élevée à la corrosion.The invention relates to a method of surface treatment of an aluminum alloy part, which comprises a first step of treating the part by micro-arc oxidation, the part being immersed in an aqueous electrolytic medium containing a silicate salt. at a concentration greater than or equal to 2 g / l and an aluminate salt at a concentration greater than or equal to 1 g / l, and being traversed by an electric current; then a second step of treatment of the part by bringing the part into contact successively with a first aqueous composition containing a corrosion-inhibiting metal salt, excluding a hexavalent chromium salt, and an oxidizing compound, then a second aqueous composition containing a rare earth corrosion inhibitor salt and an oxidizing compound. The part thus treated has a high resistance to corrosion.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1859550A FR3087208B1 (en) | 2018-10-16 | 2018-10-16 | SURFACE TREATMENT PROCESS OF ALUMINUM PARTS |
| PCT/FR2019/052433 WO2020079358A1 (en) | 2018-10-16 | 2019-10-15 | Method for surface-treating aluminium parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1859550A FR3087208B1 (en) | 2018-10-16 | 2018-10-16 | SURFACE TREATMENT PROCESS OF ALUMINUM PARTS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3087208A1 FR3087208A1 (en) | 2020-04-17 |
| FR3087208B1 true FR3087208B1 (en) | 2020-10-30 |
Family
ID=65244298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1859550A Active FR3087208B1 (en) | 2018-10-16 | 2018-10-16 | SURFACE TREATMENT PROCESS OF ALUMINUM PARTS |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR3087208B1 (en) |
| WO (1) | WO2020079358A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3140382A1 (en) * | 2022-10-04 | 2024-04-05 | Safran Landing Systems | PROCESS FOR POST-ANODIZATION SEALING OF ALUMINUM AND ALUMINUM ALLOYS WITHOUT USING CHROME |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2808291B1 (en) | 2000-04-26 | 2003-05-23 | Mofratech | ELECTROLYTIC OXIDATION PROCESS FOR OBTAINING A CERAMIC COATING ON THE SURFACE OF A METAL |
| US20060016690A1 (en) * | 2004-07-23 | 2006-01-26 | Ilya Ostrovsky | Method for producing a hard coating with high corrosion resistance on articles made anodizable metals or alloys |
| GB2469115B (en) * | 2009-04-03 | 2013-08-21 | Keronite Internat Ltd | Process for the enhanced corrosion protection of valve metals |
| FR2986806B1 (en) | 2012-02-10 | 2015-03-20 | Mecaprotec Ind | PROCESS FOR SURFACE TREATMENT OF ALUMINUM ALLOY OR MAGNESIUM ALLOYS |
| FR3017884B1 (en) * | 2014-02-25 | 2017-09-22 | Snecma | DUST PROTECTION EDGE AND METHOD OF MANUFACTURE |
| FR3059680B1 (en) * | 2016-12-07 | 2018-12-07 | Figeac Aero | DEVICE FOR MANUFACTURING BY A MICRO-ARCS OXIDATION PROCESS |
-
2018
- 2018-10-16 FR FR1859550A patent/FR3087208B1/en active Active
-
2019
- 2019-10-15 WO PCT/FR2019/052433 patent/WO2020079358A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020079358A1 (en) | 2020-04-23 |
| FR3087208A1 (en) | 2020-04-17 |
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|---|---|---|---|
| PLFP | Fee payment |
Year of fee payment: 2 |
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| PLSC | Publication of the preliminary search report |
Effective date: 20200417 |
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| PLFP | Fee payment |
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