EP1718779B1 - Revetement metallique pour ustensile de cuisson - Google Patents

Revetement metallique pour ustensile de cuisson Download PDF

Info

Publication number
EP1718779B1
EP1718779B1 EP05717591.1A EP05717591A EP1718779B1 EP 1718779 B1 EP1718779 B1 EP 1718779B1 EP 05717591 A EP05717591 A EP 05717591A EP 1718779 B1 EP1718779 B1 EP 1718779B1
Authority
EP
European Patent Office
Prior art keywords
coating
quasicrystalline
alloy
composition
alloys
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.)
Not-in-force
Application number
EP05717591.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1718779A1 (fr
Inventor
Stéphane RAFFY
Jean-Marie Dubois
Valérie DEMANGE
Marie-Cécile DE WEERD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
Saint Gobain Centre de Recherche et dEtudes Europeen SAS
Original Assignee
Centre National de la Recherche Scientifique CNRS
Saint Gobain Centre de Recherche et dEtudes Europeen SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRS, Saint Gobain Centre de Recherche et dEtudes Europeen SAS filed Critical Centre National de la Recherche Scientifique CNRS
Publication of EP1718779A1 publication Critical patent/EP1718779A1/fr
Application granted granted Critical
Publication of EP1718779B1 publication Critical patent/EP1718779B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component

Definitions

  • the present invention relates to a metal coating for a cooking utensil.
  • metals or metal alloys for example aluminum alloys
  • aluminum alloys are known for their good mechanical properties, their good thermal conductivity, their light weight, their low cost and they have found many applications for a long time, especially for utensils and appliances. cooking.
  • most of these metals or metal alloys have drawbacks related to their insufficient hardness and wear resistance, or their low resistance to corrosion.
  • Alloys having the composition Al a Cu b Co b , (B, C) c M d N e I f , with 0 ⁇ b ⁇ 5, 0 ⁇ b ' ⁇ 22, 0 ⁇ c ⁇ 5, and M represents Mn + Fe + Cr or Fe + Cr are recommended as a coating for cooking utensils.
  • the quasicrystalline alloys According to Z. Minevski, et al., [MRS Fall 2003 Symposium, "Electrocodeposited Quasicrystalline Coatings for Non-Stick, Wear Resistant Cookware" the quasicrystalline alloys have good mechanical properties and surface characteristics which make them particularly useful for various applications, especially for coating cookware. Al 65 Cu 23 Fe 12 alloy is mentioned in particular.
  • quasicrystalline alloys generally have good mechanical properties, good heat transfer properties, and good impact and abrasion resistance, not all of them can be used as a coating for food cookware.
  • the quasicrystalline alloy is in contact with food, which is a saline medium (due to the addition of sodium chloride to most foods) and possibly acidic. It is therefore necessary that the quasicrystalline coating has a good resistance to corrosion caused by this type of medium.
  • generally recommended alloys contain copper, which is the cause of low corrosion resistance.
  • the object of the present invention is to provide a quasicrystalline alloy that can be used as a coating for the surface of a cooking utensil in contact with the food to be cooked, which has good mechanical properties, as well as a good resistance scratch and corrosion.
  • the present invention therefore relates to a coating for a utensil or a cooking appliance of food products, as well as utensils and appliances carrying said coating.
  • a coating according to the present invention can be obtained from a pre-elaborated ingot, or ingots of separate elements taken as targets in a cathode sputtering reactor or by vapor deposition produced by the vacuum melting of the bulk material. in all cases from copper-free materials.
  • the coating may also be obtained by thermal spraying, for example using an oxy-gas torch, a supersonic torch or a plasma torch, from a powder consisting of an alloy having the composition final desired.
  • the coating may further be obtained by electro-deposition from a quasicrystalline alloy powder having the desired composition for the final coating.
  • An alloy intended to be used in bulk form or in powder form for the preparation of a coating according to the invention can be obtained by conventional metallurgical production processes, that is to say which comprise a phase of slow cooling (ie ⁇ T / t less than a few hundred degrees per minute).
  • ingots may be obtained by melting the separated metal elements or pre-alloys in a brazed graphite crucible under a protective gas blanket (argon, nitrogen), conventionally used blanket flux in metallurgy, or in a crucible kept under empty. It is also possible to use crucibles made of refractory ceramic or copper cooled with heating by high frequency current.
  • the preparation of an alloy powder can then be carried out by mechanical grinding.
  • a powder consisting of spherical particles may also be obtained by atomization of the liquid alloy by an argon jet according to a conventional technique, such a powder being particularly suitable for the preparation of thermal spray coatings.
  • Another object of the present invention is a food cooking utensil or apparatus, wherein the food contact surface is coated according to the present invention.
  • An alloy having the composition Al atomic Fe ⁇ 70 ⁇ 10 ⁇ 20 Cr (that is to say a weight composition Fe Al ⁇ 54,2 ⁇ 16,0 ⁇ 29,8 Cr) was formed into powder by atomization, with a capillary diameter of 4 mm and a nitrogen pressure of 4 bar. The powder was separated into granulometric slices and the powders having a grain size between 20 ⁇ m and 90 ⁇ m were kept. The actual mass composition of the powder after atomization is Al 53.8 ⁇ 0.5 Fe 16.4 ⁇ 0.2 Cr 29.9 ⁇ 0.3 .
  • a coating deposit was carried out on a 316L stainless steel substrate preheated to 250 ° C., using a plasma torch with a hydrogen flow rate of 0.4 l. / min.
  • the coating obtained has a thickness of 200 to 300 microns.
  • plasma spraying was carried out on 316L stainless steel substrates from the composition Al 71 Cr 10.6 Fe 8.7 Cu 9.7 ("Cristome A1") relatively rich in copper, and of the composition Al 69.5 Cu 0.54 Cr 20.26 Fe 9.72 (A11) in which the copper content is very low.
  • Corrosion tests were performed on 25 mm diameter disc samples that were metallographically polished to the 3 ⁇ m diamond-filled felt.
  • Galvanic tests simulate accelerated corrosion. They were carried out on a coating according to the invention of Example 1, as well as for comparison on alloy coatings A1 and A11 according to the following procedure. 0.35 M NaCl aqueous solution was immersed at 60 ° C., a test sample to be used as a working electrode, a platinum plate to serve as a counter electrode and a reference electrode. Increasing potential has been imposed between the reference electrode and the sample. ⁇ E represents the offset between the abandoning potential (that is, the potential that exists intrinsically between the sample and the reference electrode), and the potential from which dissolution of the coating begins. The results of the galvanic tests carried out are summarized in the table below.
  • the impedance measurements are performed in a cell similar to that used for the galvanic tests. From the equilibrium potential, the cell is imposed with a sinusoidal potential around the equilibrium potential, and the complex impedance is measured as a function of the frequency of the sinusoid.
  • a Nyquist diagram is modeled using equivalent circuits that give interfacial capacities (related to the developed surface of the sample) and transfer resistances (related to the resistance to the passage in solution of the metal ions. ).
  • the samples were placed for 20 h in a 0.35 M NaCl aqueous solution at 60 ° C. After extraction of the samples, the surface condition was examined and the immersion solutions were analyzed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cookers (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP05717591.1A 2004-02-16 2005-02-09 Revetement metallique pour ustensile de cuisson Not-in-force EP1718779B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0401536A FR2866350B1 (fr) 2004-02-16 2004-02-16 Revetement en alliage d'aluminium, pour ustensile de cuisson
PCT/FR2005/000290 WO2005083139A1 (fr) 2004-02-16 2005-02-09 Revetement metallique pour ustensile de cuisson

Publications (2)

Publication Number Publication Date
EP1718779A1 EP1718779A1 (fr) 2006-11-08
EP1718779B1 true EP1718779B1 (fr) 2016-11-09

Family

ID=34803396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05717591.1A Not-in-force EP1718779B1 (fr) 2004-02-16 2005-02-09 Revetement metallique pour ustensile de cuisson

Country Status (8)

Country Link
US (1) US7563517B2 (es)
EP (1) EP1718779B1 (es)
JP (1) JP4958563B2 (es)
CA (1) CA2554285C (es)
DK (1) DK1718779T3 (es)
ES (1) ES2611755T3 (es)
FR (1) FR2866350B1 (es)
WO (1) WO2005083139A1 (es)

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Publication number Priority date Publication date Assignee Title
US7147634B2 (en) 2005-05-12 2006-12-12 Orion Industries, Ltd. Electrosurgical electrode and method of manufacturing same
US8814861B2 (en) 2005-05-12 2014-08-26 Innovatech, Llc Electrosurgical electrode and method of manufacturing same
CN100392145C (zh) * 2005-12-21 2008-06-04 上海工程技术大学 真空蒸镀制备铝－铜－铁准晶涂层的方法
JP5643217B2 (ja) 2008-12-01 2014-12-17 サン−ゴバン コーティング ソルスィヨン ガラス材料成形装置のためのコーティング
KR101807985B1 (ko) 2014-03-28 2017-12-11 신닛테츠스미킨 카부시키카이샤 준결정 함유 도금 강판
AU2014388691B2 (en) 2014-03-28 2017-08-03 Nippon Steel Corporation Plated steel sheet containing quasicrystal
KR101890078B1 (ko) 2014-09-05 2018-08-20 신닛테츠스미킨 카부시키카이샤 준결정 함유 도금 강판 및 준결정 함유 도금 강판의 제조 방법
JP6441013B2 (ja) * 2014-09-30 2018-12-19 東洋アルミニウム株式会社 加熱調理器具用アルミニウム合金部材
EP3804581A4 (en) * 2018-07-27 2021-06-30 Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. COATING, METHOD AND SYSTEM FOR MANUFACTURING A COATING, COOKWARE AND COOKING EQUIPMENT
WO2020019717A1 (zh) * 2018-07-27 2020-01-30 佛山市顺德区美的电热电器制造有限公司 涂层、形成涂层的方法和系统、锅具和烹饪设备
CN111139419B (zh) * 2018-11-02 2022-09-20 佛山市顺德区美的电热电器制造有限公司 容器及其制备方法以及烹饪设备
CN111134544A (zh) * 2018-11-02 2020-05-12 佛山市顺德区美的电热电器制造有限公司 容器和具有该容器的烹饪器具
CN112137421B (zh) * 2019-06-28 2024-03-15 武汉苏泊尔炊具有限公司 涂料与烹饪器具
CN112754296B (zh) * 2019-10-21 2024-06-04 广东万事泰集团有限公司 一种锅具表层的多峰结构材料及其制备方法

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JPH02159368A (ja) * 1988-12-09 1990-06-19 Kobe Steel Ltd 耐熱性および耐食性に優れたａ１合金蒸着めっき鋼材
FR2671808B1 (fr) * 1991-01-18 1994-06-17 Centre Nat Rech Scient Alliages d'aluminium a proprietes specifiques.
FR2685349B1 (fr) * 1991-12-20 1994-03-25 Centre Nal Recherc Scientifique Element de protection thermique constitue par un alliage d'aluminium quasi-cristallin.
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Also Published As

Publication number Publication date
FR2866350A1 (fr) 2005-08-19
DK1718779T3 (en) 2017-02-13
ES2611755T3 (es) 2017-05-10
CA2554285A1 (fr) 2005-09-09
FR2866350B1 (fr) 2007-06-22
WO2005083139A1 (fr) 2005-09-09
JP4958563B2 (ja) 2012-06-20
US7563517B2 (en) 2009-07-21
CA2554285C (fr) 2012-11-27
JP2007525596A (ja) 2007-09-06
US20080032151A1 (en) 2008-02-07
EP1718779A1 (fr) 2006-11-08

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