TR201908092T4 - Alüminyum veya magnezyum alaşımından üretilen parçalar için yüzey işleme yöntemi. - Google Patents
Alüminyum veya magnezyum alaşımından üretilen parçalar için yüzey işleme yöntemi. Download PDFInfo
- Publication number
- TR201908092T4 TR201908092T4 TR2019/08092T TR201908092T TR201908092T4 TR 201908092 T4 TR201908092 T4 TR 201908092T4 TR 2019/08092 T TR2019/08092 T TR 2019/08092T TR 201908092 T TR201908092 T TR 201908092T TR 201908092 T4 TR201908092 T4 TR 201908092T4
- Authority
- TR
- Turkey
- Prior art keywords
- aluminum
- alloys
- surface treatment
- treatment method
- magnesium alloy
- Prior art date
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 229910000838 Al alloy Inorganic materials 0.000 title 1
- 229910000861 Mg alloy Inorganic materials 0.000 title 1
- 238000004381 surface treatment Methods 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 abstract 3
- 239000000956 alloy Substances 0.000 abstract 3
- 238000005260 corrosion Methods 0.000 abstract 3
- 230000007797 corrosion Effects 0.000 abstract 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000003112 inhibitor Substances 0.000 abstract 2
- 229910052749 magnesium Inorganic materials 0.000 abstract 2
- 239000011777 magnesium Substances 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 238000002048 anodisation reaction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- -1 rare earth salt Chemical class 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/56—Treatment of aluminium or alloys based thereon
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/57—Treatment of magnesium or alloys based thereon
-
- 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
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
-
- 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
- C25D11/18—After-treatment, e.g. pore-sealing
-
- 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
-
- 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
- C25D11/30—Anodisation of magnesium or alloys based thereon
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1251268A FR2986806B1 (fr) | 2012-02-10 | 2012-02-10 | Procede de traitement de surface de pieces en alliage d'aluminium ou de magnesium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TR201908092T4 true TR201908092T4 (tr) | 2019-06-21 |
Family
ID=47681931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TR2019/08092T TR201908092T4 (tr) | 2012-02-10 | 2013-02-11 | Alüminyum veya magnezyum alaşımından üretilen parçalar için yüzey işleme yöntemi. |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9879347B2 (cg-RX-API-DMAC10.html) |
| EP (1) | EP2812462B1 (cg-RX-API-DMAC10.html) |
| BR (1) | BR112014019739B1 (cg-RX-API-DMAC10.html) |
| CA (1) | CA2864109C (cg-RX-API-DMAC10.html) |
| ES (1) | ES2729113T3 (cg-RX-API-DMAC10.html) |
| FR (1) | FR2986806B1 (cg-RX-API-DMAC10.html) |
| TR (1) | TR201908092T4 (cg-RX-API-DMAC10.html) |
| WO (1) | WO2013117767A1 (cg-RX-API-DMAC10.html) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9790613B2 (en) | 2015-03-17 | 2017-10-17 | Goodrich Corporation | Aluminum alloy anodization |
| US10500145B2 (en) | 2015-06-19 | 2019-12-10 | inkbox ink Inc. | Body ink compositions and applicators |
| WO2017021387A1 (de) * | 2015-08-05 | 2017-02-09 | Poligrat Gmbh | Abrieb- und haftfeste sol-gel-beschichtung auf aluminium und verfahren zur herstellung einer solchen beschichtung |
| CN105239134B (zh) * | 2015-11-11 | 2017-07-21 | 赣南师范大学 | 一种提高镁合金阳极氧化膜层耐蚀性能的方法 |
| FR3051805B1 (fr) * | 2016-05-30 | 2018-06-15 | Safran | Procede de chromatation et piece obtenue par ce procede |
| WO2017208101A1 (de) * | 2016-06-03 | 2017-12-07 | Leistchamm Beteiligungen Ag | Verfahren zur herstellung eines bauteils und ein nach dem verfahren hergestelltes bauteil |
| EP3301205B1 (en) * | 2016-09-02 | 2019-10-09 | AD Productions B.V. | Acidic aqueous composition for preparing a corrosion resistant coating on a metal substrate, method for treating the metal substrate by using the composition |
| NL2017768B1 (en) * | 2016-09-02 | 2018-03-09 | Ad Productions B V | Acidic aqueous composition for preparing a corrosion resistant coating on a metal substrate, method using the composition, and post-treatment composition |
| US10760164B2 (en) | 2016-11-04 | 2020-09-01 | Hamilton Sundstrand Corporation | Two-step sealing of anodized aluminum coatings |
| US20180127883A1 (en) * | 2016-11-04 | 2018-05-10 | Hamilton Sundstrand Corporation | Two-step sealing of anodized aluminum coatings |
| US10480093B2 (en) * | 2017-05-12 | 2019-11-19 | United Technologies Corporation | Sealing process for an anodized aluminum-alloy surface |
| BR112020015368A2 (pt) * | 2018-01-30 | 2020-12-08 | Prc-Desoto International, Inc. | Sistemas e métodos para tratar um substrato de metal |
| US20200024766A1 (en) * | 2018-07-18 | 2020-01-23 | Leonardo S.P.A. | Anodization method for corrosion protection of aluminium alloy elements used in an aircraft structure |
| FR3087208B1 (fr) | 2018-10-16 | 2020-10-30 | Irt Antoine De Saint Exupery | Procede de traitement de surface de pieces en aluminium |
| CN109295464B (zh) * | 2018-11-23 | 2020-11-03 | 内蒙古中铁蓝星环保清洗有限公司 | 一种多功能环保稀土清洗剂及其制备方法 |
| TWI705936B (zh) * | 2018-12-25 | 2020-10-01 | 國立中山大學 | 在液相環境中沉積金屬氧化物薄膜的方法 |
| US12098463B2 (en) | 2018-12-25 | 2024-09-24 | National Sun Yat-Sen University | Method for manufacturing amorphous multielement metal oxide hydroxide film |
| CN110760916B (zh) * | 2019-11-18 | 2022-04-05 | 和县科嘉阀门铸造有限公司 | 一种提高镁合金阀门耐蚀性的方法 |
| FR3106838B1 (fr) * | 2020-01-31 | 2022-01-14 | Safran Aircraft Engines | Procede de colmatage des alliages d’aluminium |
| US12134830B2 (en) | 2020-10-22 | 2024-11-05 | Rtx Corporation | Sealing for anodized metal |
| US12404590B2 (en) * | 2020-11-13 | 2025-09-02 | Rtx Corporation | Hybrid sealing for anodized metal |
| US11926899B2 (en) * | 2020-12-04 | 2024-03-12 | Raytheon Company | Process for application of oxyhydroxides coating for aluminum containing material |
| US20230136068A1 (en) * | 2021-11-03 | 2023-05-04 | United States Of America As Represented By The Secretary Of The Navy | Corrosion resistant chromium free conversion coatings |
| FR3137393B1 (fr) * | 2022-06-30 | 2025-10-31 | Safran Landing Systems | Piece en alliage d’aluminium et procede de fabrication associe |
| FR3140382B1 (fr) | 2022-10-04 | 2026-06-26 | Safran Landing Systems | Procede de colmatage post-anodisation de l’aluminium et des alliages d’aluminium sans utiliser de chrome |
| DE102022126251A1 (de) | 2022-10-11 | 2024-04-11 | Liebherr-Aerospace Lindenberg Gmbh | Verfahren zur Oberflächenbehandlung |
| CN116590699A (zh) * | 2023-04-18 | 2023-08-15 | 瑞立集团瑞安汽车零部件有限公司 | 一种铝合金无铬钝化剂及其制备方法和铝合金的钝化方法 |
| US20250297401A1 (en) * | 2024-03-22 | 2025-09-25 | Hamilton Sundstrand Corporation | Hexavalent chromium-free hard coat maskant |
| FR3164019A1 (fr) | 2024-06-27 | 2026-01-02 | Safran Aerosystems | Procédé de détection d’une couche de conversion chimique ou de passivation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1014831A (en) * | 1973-06-06 | 1977-08-02 | Donald J. Melotik | Rare earth metal rinse for metal coatings |
| US5374347A (en) * | 1993-09-27 | 1994-12-20 | The United States Of America As Represented By The Secretary Of The Navy | Trivalent chromium solutions for sealing anodized aluminum |
| US5304257A (en) * | 1993-09-27 | 1994-04-19 | The United States Of America As Represented By The Secretary Of The Navy | Trivalent chromium conversion coatings for aluminum |
| US6248184B1 (en) * | 1997-05-12 | 2001-06-19 | The Boeing Company | Use of rare earth metal salt solutions for sealing or anodized aluminum for corosion protection and paint adhesion |
| US7452427B2 (en) * | 2004-12-01 | 2008-11-18 | Deft, Inc. | Corrosion resistant conversion coatings |
| AU2005327546A1 (en) * | 2005-02-15 | 2006-08-24 | The United States Of America, As Represented By The Secretary Of The Navy | Composition and process for preparing chromium-zirconium coatings on metal substrates |
| CA2642365C (en) * | 2006-02-14 | 2015-12-15 | Henkel Kommanditgesellschaft Auf Aktien | Composition and processes of a dry-in-place trivalent chromium corrosion-resistant coating for use on metal surfaces |
| CN102046843A (zh) * | 2008-05-27 | 2011-05-04 | 油研工业股份有限公司 | 表面剂及具有由表面剂形成的外涂层的部件 |
| WO2010032702A1 (ja) * | 2008-09-17 | 2010-03-25 | 株式会社放電精密加工研究所 | 亜鉛又は亜鉛合金表面の黒色化化成処理用水溶液と該処理用水溶液を用いる黒色化防錆皮膜形成方法 |
| US9347134B2 (en) * | 2010-06-04 | 2016-05-24 | Prc-Desoto International, Inc. | Corrosion resistant metallate compositions |
-
2012
- 2012-02-10 FR FR1251268A patent/FR2986806B1/fr active Active
-
2013
- 2013-02-11 EP EP13703431.0A patent/EP2812462B1/fr active Active
- 2013-02-11 CA CA2864109A patent/CA2864109C/fr active Active
- 2013-02-11 WO PCT/EP2013/052701 patent/WO2013117767A1/fr not_active Ceased
- 2013-02-11 BR BR112014019739-3A patent/BR112014019739B1/pt active IP Right Grant
- 2013-02-11 TR TR2019/08092T patent/TR201908092T4/tr unknown
- 2013-02-11 ES ES13703431T patent/ES2729113T3/es active Active
- 2013-02-11 US US14/377,849 patent/US9879347B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2986806B1 (fr) | 2015-03-20 |
| FR2986806A1 (fr) | 2013-08-16 |
| CA2864109A1 (fr) | 2013-08-15 |
| ES2729113T3 (es) | 2019-10-30 |
| BR112014019739A8 (pt) | 2017-07-11 |
| EP2812462A1 (fr) | 2014-12-17 |
| CA2864109C (fr) | 2020-02-04 |
| BR112014019739B1 (pt) | 2020-11-24 |
| WO2013117767A1 (fr) | 2013-08-15 |
| BR112014019739A2 (cg-RX-API-DMAC10.html) | 2017-06-20 |
| US20150020925A1 (en) | 2015-01-22 |
| US9879347B2 (en) | 2018-01-30 |
| EP2812462B1 (fr) | 2019-04-10 |
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