EP0902105B1 - Mehrschichtige Antihaft-Beschichtung mit verbesserter Härte für einen Aluminiumträger, Gegenstände und Küchengeräte mit dieser Beschichtung - Google Patents

Mehrschichtige Antihaft-Beschichtung mit verbesserter Härte für einen Aluminiumträger, Gegenstände und Küchengeräte mit dieser Beschichtung Download PDF

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Publication number
EP0902105B1
EP0902105B1 EP98402174A EP98402174A EP0902105B1 EP 0902105 B1 EP0902105 B1 EP 0902105B1 EP 98402174 A EP98402174 A EP 98402174A EP 98402174 A EP98402174 A EP 98402174A EP 0902105 B1 EP0902105 B1 EP 0902105B1
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EP
European Patent Office
Prior art keywords
layer
aluminium
coating
support
polytetrafluoroethylene
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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
Application number
EP98402174A
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English (en)
French (fr)
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EP0902105A1 (de
Inventor
Claudine Gardaz
Jean-Pierre Résidence le Lac Buffard
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SEB SA
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SEB SA
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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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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

Definitions

  • the present invention relates to a coating non-stick multilayer with improved hardness for support made of aluminum or aluminum alloy.
  • the invention also relates to articles of aluminum or aluminum alloy and in particular cooking utensils with a coating according to the invention.
  • Coatings based on polytetrafluoroethylene (PTFE) applied to the interior surface and / or aluminum cooking utensils have the disadvantage of being sensitive to scratches and wear.
  • PTFE polytetrafluoroethylene
  • the purpose of the present invention is to achieve non-stick coating for aluminum support with improved resistance to scratching and wear.
  • the multilayer coating non-stick with improved hardness for support in aluminum is characterized in that it comprises the following layers: a first hard layer based alumina, consisting of a layer of ⁇ alumina and ⁇ alumina covered with a surface layer of mullite, the layer of ⁇ alumina and ⁇ alumina having a hardness greater than 1500 vickers, this first hard layer being produced by anodic oxidation of the aluminum support immersed in an alkaline solution, by applying micro arcs to this support using high current and potential difference, the mullite layer which can be removed in whole or in part by polishing, a second layer based on polytetrafluoroethylene and constituent chemical agents a primer for one or more layers finish based on polytetrafluoroethylene.
  • a first hard layer based alumina consisting of a layer of ⁇ alumina and ⁇ alumina covered with a surface layer of mullite, the layer of ⁇ alumina and ⁇ alumina having a hardness greater than
  • the invention also relates to a method applying a non-stick multilayer coating having hardness and resistance to scratches and improved wear formed on an aluminum support.
  • This layer is composed of ⁇ alumina and ⁇ alumina covered with a surface layer of porous mullite (silico-alumina).
  • This hard layer has the particularity to be much harder and to have resistance to significantly higher wear than the layers alumina obtained by conventional anodization or thermal plasma spraying.
  • Figure 1 shows a container 1 containing an alkaline solution 2 in which an anode is immersed 3 and a cathode 4.
  • Anode 3 is an aluminum support which wants to oxidize the surface.
  • Anode 3 and cathode 4 are connected to a generator 5 allowing to apply between this anode 3 and this cathode, a high potential difference, for example between 500 and 1000 volts.
  • the generator 5 also makes it possible to generate short and high intensity pulses, way of forming micro electric arcs likely oxidize the surface of the aluminum support 3.
  • This oxidation forms on the surface of the support a hard layer of alumina 6 (see Figure 2).
  • Layer 6 is mainly composed of ⁇ alumina and of a few percentages of ⁇ alumina.
  • mullite 7 (silico-alumina) which is porous.
  • the thickness of the hard layer of alumina 6 can vary between 5 and 100 microns.
  • This layer of alumina has a hardness and much higher wear resistance than those of coatings obtained by conventional anodization or thermal plasma spraying.
  • the hardness of this layer is greater than 1500 vickers while that of the conventional ceramic layers obtained by anodization is at most equal to 450 vickers.
  • a second layer 8 to based on polytetrafluoroethylene and chemical agents to constitute a primer, then one or more two layers 9, 10 of finishing based on polytetrafluoroethylene.
  • Layers 8, 9, 10 can have a total thickness between 5 and 50 microns.
  • compositions of the different layers 8, 9, 10 are given below, by way of examples, in the case of a non-stick coating for cooking utensils.
  • components Layer 8% by weight Layer 9% by weight Layer 10% by weight Silica Sol precipitated with 30% dry extract in aqueous solution SNOWTEX C.30 10 - 30 0 0
  • Mineral pigments Iron oxide or carbon black 0 to 5 0 to 0.5 0
  • Emulsion of spreading agents at 15% dry extract comprising approximately 5 - 10% of acrylic copolymers 0 to 15 10 - 20 10 - 20 Polyamide-imide resin in 12% aqueous solution of dry extract 0 - 40 0
  • This invention is particularly intended for nonstick coating of cookware but also applies to any item you want create a sliding surface (for example a iron soleplate) having excellent hardness and wear resistant.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Cookers (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (8)

  1. Mehrschichtige Antihaft-Beschichtung, die eine verbesserte Härte und eine verbesserte Festigkeit gegen Kratzern und Verschleiß aufweist, die auf einem Träger aus Aluminium (3) gebildet ist, dadurch gekennzeichnet, dass sie die folgenden Schichten umfasst: eine erste, harte Schicht (6, 7) auf Aluminiumoxidbasis, die aus einer Schicht (6) aus Aluminiumoxid α und aus Aluminiumoxid γ gebildet ist, die von einer Oberflächenschicht (7) aus Mullit bedeckt ist, wobei die Schicht (6) aus Aluminiumoxid α und aus Aluminiumoxid γ eine Härte größer als 1500 Vickers aufweist, wobei die erste, harte Schicht (6, 7) durch anodische Oxidation des in eine alkalische Lösung (2) getauchten Trägers aus Aluminium (3) unter Anlegen von Mikrobögen mittels eines erhöhten Stroms und einer erhöhten Potentialdifferenz an diesen Träger erreicht ist, wobei die Schicht (7) aus Mullit ganz oder teilweise durch Polieren entfernt werden kann, eine zweite Schicht (8) auf Basis von Polytetrafluorethylen und Reagenzien, die eine Haftgrundierung für eine oder mehrere Deckschichten (9, 10) auf Basis von Polytetrafluorethylen bildet.
  2. Beschichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die harte Schicht (6) eine Dicke aufweist, die zwischen 5 und 100 Mikron liegt.
  3. Beschichtung gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass die zweite Haftgrundierungsschicht (8) und die Deckschicht oder Deckschichten (9, 10) auf Basis von Polytetrafluorethylen, eine Dicke aufweisen, die zwischen 5 und 50 Mikron liegt.
  4. Gegenstand aus Aluminium oder aus Aluminiumlegierung, der eine Beschichtung gemäß einem der Ansprüche 1 bis 3 enthält.
  5. Küchengerät aus Aluminium oder Aluminiumlegierung, das eine Beschichtung gemäß einem der Ansprüche 1 bis 3 enthält.
  6. Verfahren zur Aufbringung einer mehrschichtigen Antihaft-Beschichtung, die eine verbesserte Härte und eine verbesserte Festigkeit gegen Kratzern und Verschleiß aufweist, die auf einem Träger aus Aluminium gebildet wird, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    die Bildung, auf der Trägeroberfläche, einer ersten, harten Schicht (6, 7) auf Aluminiumoxidbasis, die aus einer Schicht (6) aus Aluminiumoxid α und aus Aluminiumoxid γ gebildet ist, die von einer Oberflächenschicht (7) aus Mullit bedeckt ist, wobei diese erste, harte Schicht (6, 7) durch anodische Oxidation des in eine alkalische Lösung (2) getauchten Trägers aus Aluminium (3) unter Anlegen von Mikrobögen mittels eines erhöhten Stroms und einer erhöhten Potentialdifferenz an diesen Träger erhalten wird,
    die Aufbringung einer zweiten Schicht (8) auf Basis von Polytetrafluorethylen und Reagenzien, die eine Haftgrundierung bildet, dann
    die Aufbringung einer oder mehrerer Deckschichten (9, 10) auf Basis von Polytetrafluorethylen, und schließlich,
    die Sinterung bzw. Ausbrennung der so erhaltenen Beschichtung.
  7. Verfahren gemäß Anspruch 6, dadurch gekennzeichnet, dass es weiterhin einen Polierschritt vor der Aufbringung der Schichten (8, 9, 10) aus PTFE umfasst, um die Oberflächenschicht aus Mullit (7) ganz oder teilweise zu entfemen.
  8. Verfahren gemäß Anspruch 6 oder 7, dadurch gekennzeichnet, dass es ebenfalls einen Polierschritt nach dem Sinterschritt umfasst.
EP98402174A 1997-09-10 1998-09-02 Mehrschichtige Antihaft-Beschichtung mit verbesserter Härte für einen Aluminiumträger, Gegenstände und Küchengeräte mit dieser Beschichtung Expired - Lifetime EP0902105B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9711242 1997-09-10
FR9711242A FR2768158B1 (fr) 1997-09-10 1997-09-10 Revetement de couche antiadherent a durete amelioree pour support en aluminium, articles et ustensiles culinaires comportant ce revetement

Publications (2)

Publication Number Publication Date
EP0902105A1 EP0902105A1 (de) 1999-03-17
EP0902105B1 true EP0902105B1 (de) 2003-12-03

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EP98402174A Expired - Lifetime EP0902105B1 (de) 1997-09-10 1998-09-02 Mehrschichtige Antihaft-Beschichtung mit verbesserter Härte für einen Aluminiumträger, Gegenstände und Küchengeräte mit dieser Beschichtung

Country Status (7)

Country Link
EP (1) EP0902105B1 (de)
JP (1) JP3881461B2 (de)
CA (1) CA2246215C (de)
DE (1) DE69820181T2 (de)
ES (1) ES2212236T3 (de)
FR (1) FR2768158B1 (de)
TR (1) TR199801803A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013670A1 (de) * 2005-03-14 2006-09-21 Decoma (Germany) Gmbh Verfahren zum Behandeln einer Oberfläche
CN101019742B (zh) * 2007-03-23 2010-05-19 严卫星 一种高耐磨的不粘炊具的制作方法
WO2018001130A1 (zh) * 2016-06-30 2018-01-04 比亚迪股份有限公司 壳体及其制备方法和应用
WO2018001131A1 (zh) * 2016-06-30 2018-01-04 比亚迪股份有限公司 壳体及其制备方法和应用

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2807071B1 (fr) 2000-03-28 2002-11-15 Dja Dodane Jean Et Associes Revetement anti-adherent ceramo-metallique pour ustensiles culinaires
KR100524045B1 (ko) * 2002-06-26 2005-10-27 주식회사 알파크린테크 마이크로 아크 산화 코팅용 자동 제어장치 및 그 방법
US7964085B1 (en) 2002-11-25 2011-06-21 Applied Materials, Inc. Electrochemical removal of tantalum-containing materials
US6919012B1 (en) 2003-03-25 2005-07-19 Olimex Group, Inc. Method of making a composite article comprising a ceramic coating
US8617672B2 (en) 2005-07-13 2013-12-31 Applied Materials, Inc. Localized surface annealing of components for substrate processing chambers
US9127362B2 (en) 2005-10-31 2015-09-08 Applied Materials, Inc. Process kit and target for substrate processing chamber
US7942969B2 (en) 2007-05-30 2011-05-17 Applied Materials, Inc. Substrate cleaning chamber and components
US20090127246A1 (en) * 2007-11-16 2009-05-21 Bsh Home Appliances Corporation Treated structural components for a cooking appliance
FR2923696B1 (fr) 2007-11-16 2012-08-17 Seb Sa Article culinaire comprenant un revetement antiadhesif resistant a la corrosion et a la rayure
SG157239A1 (en) * 2008-05-14 2009-12-29 Fulita Internat Entpr Pte Ltd A process for forming coatings on metallic surfaces
EP2478132B1 (de) * 2009-09-04 2017-09-20 Meyer Intellectual Properties Limited Kochgeschirr aus anodisiertem und kaschiertem kupfer
FR2967563B1 (fr) 2010-11-19 2013-08-23 Seb Sa Procede d'obtention d'un recipient de cuisson comportant une face exterieure anodisee dure coloree
ES2394703B1 (es) * 2010-12-22 2014-02-28 BSH Electrodomésticos España S.A. Dispositivo de sujeción de soporte de producto de cocción
FR2982138B1 (fr) 2011-11-07 2013-11-01 Seb Sa Procede d'obtention d'un recipient de cuisson comportant une face exterieure anodisee dure coloree
FR2987732B1 (fr) 2012-03-07 2014-04-11 Seb Sa Procede d'obtention d'un recipient de cuisson comportant une face exterieure anodisee dure coloree
FR2990615B1 (fr) 2012-05-16 2015-07-31 Seb Sa Procede d'obtention d'un recipient de cuisson comportant une face exterieure anodisee coloree electrochimiquement
JP2014005480A (ja) * 2012-06-21 2014-01-16 Naofumi Warabi Ｍａｏ結晶性金属酸化物のホウロウ加工品
CN103963368B (zh) * 2013-02-06 2016-10-05 上海旭奈超贸易有限公司 一种具有氟树脂涂层的铝合金产品
CN108720621B (zh) * 2017-04-25 2021-08-10 佛山市顺德区美的电热电器制造有限公司 不粘涂层及其制备方法以及锅具和煮食设备

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Publication number Priority date Publication date Assignee Title
EP0424072A1 (de) * 1989-10-16 1991-04-24 Meyer Manufacturing Co., Ltd Kochgeschirr

Family Cites Families (3)

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US5147515A (en) * 1989-09-04 1992-09-15 Dipsol Chemicals Co., Ltd. Method for forming ceramic films by anode-spark discharge
GB9222275D0 (en) * 1992-10-23 1992-12-09 Meyer Manuf Co Ltd Cookware and a method of forming same
RU2086713C1 (ru) * 1995-07-11 1997-08-10 Федорова Людмила Петровна Тонкослойное керамическое покрытие и способ его получения

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0424072A1 (de) * 1989-10-16 1991-04-24 Meyer Manufacturing Co., Ltd Kochgeschirr

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005013670A1 (de) * 2005-03-14 2006-09-21 Decoma (Germany) Gmbh Verfahren zum Behandeln einer Oberfläche
CN101019742B (zh) * 2007-03-23 2010-05-19 严卫星 一种高耐磨的不粘炊具的制作方法
WO2018001130A1 (zh) * 2016-06-30 2018-01-04 比亚迪股份有限公司 壳体及其制备方法和应用
WO2018001131A1 (zh) * 2016-06-30 2018-01-04 比亚迪股份有限公司 壳体及其制备方法和应用

Also Published As

Publication number Publication date
DE69820181D1 (de) 2004-01-15
ES2212236T3 (es) 2004-07-16
TR199801803A1 (xx) 1999-03-22
FR2768158B1 (fr) 2001-06-01
EP0902105A1 (de) 1999-03-17
JP3881461B2 (ja) 2007-02-14
CA2246215C (en) 2007-05-08
FR2768158A1 (fr) 1999-03-12
JPH11137440A (ja) 1999-05-25
CA2246215A1 (en) 1999-03-10
DE69820181T2 (de) 2004-09-23

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