EP2391742A1 - Procédé de revêtement de diffusion de zinc - Google Patents

Procédé de revêtement de diffusion de zinc

Info

Publication number
EP2391742A1
EP2391742A1 EP10702601A EP10702601A EP2391742A1 EP 2391742 A1 EP2391742 A1 EP 2391742A1 EP 10702601 A EP10702601 A EP 10702601A EP 10702601 A EP10702601 A EP 10702601A EP 2391742 A1 EP2391742 A1 EP 2391742A1
Authority
EP
European Patent Office
Prior art keywords
zinc
liquid
substrate
heat treatment
ppm
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.)
Withdrawn
Application number
EP10702601A
Other languages
German (de)
English (en)
Inventor
Frank Natrup
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.)
Graf Wolfram
Bodycote Waermebehandlung GmbH
Original Assignee
Graf Wolfram
Bodycote Waermebehandlung GmbH
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 Graf Wolfram, Bodycote Waermebehandlung GmbH filed Critical Graf Wolfram
Publication of EP2391742A1 publication Critical patent/EP2391742A1/fr
Withdrawn legal-status Critical Current

Links

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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/02—Pretreatment of the material to be coated
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
    • C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
    • C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
    • C23C10/24—Salt bath containing the element to be diffused
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00

Definitions

  • the present invention relates to a method for diffusion coating a surface of a metallic substrate with zinc, wherein the substrate to be coated is heat-treated together with zinc as a diffusion source at a temperature between 200 and 500 ° C, but below the melting temperature of the diffusion source.
  • Components made of corrosion-susceptible material such as iron and steel have been galvanized for a long time, i. provided on its surface with a comparatively thin layer of zinc to increase the corrosion resistance of the components.
  • Examples of such components are connecting and fastening elements, such as screws and bolts, body parts for motor vehicles, crash barriers, railings, external stairs and the like.
  • galvanizing for example, the hot-dip galvanizing, electroplating and Sherardizing are known.
  • the substrate to be coated after a corresponding pretreatment, which conventionally comprises the steps degreasing, pickling, fluxing and drying, is immersed in a molten zinc, which usually has a temperature between 440 to 460 ° C., and for a sufficient time in this melt leave before the thus coated substrate removed from the melt, cooled and optionally post-treated.
  • a disadvantage of hot-dip galvanizing is found in the attempt to coat coated high-strength steel parts, because under the influence of the relatively high process temperature, these can lose crucial strength and thus become unusable.
  • Another known galvanizing is the Sherardisierverfah- ren, in which the galvanizing zinc powder is usually heat treated at a temperature between 320 and 420 0 C in admixture with an inert material or filler, such as sand or ceramic, for example alumina.
  • an inert material or filler such as sand or ceramic, for example alumina.
  • the method is carried out in a heatable rotating drum, which is also referred to as a retort, in which the galvanizing material is embedded in the mixture of zinc powder and filler, before the drum is sealed airtight after being infested and heated to the required temperature.
  • the filler used in the sherardization process has several functions. On the one hand, this ensures uniform heating, gentle cleaning of the components and a homogeneous distribution of the zinc powder.
  • the sherardization process is a diffusion coating process in which zinc from the vapor phase, which is formed by sublimation due to the comparatively high vapor pressure of zinc at the temperature used for the heat treatment, diffuses into the surface layer of the substrate to be galvanized.
  • Such processes are described for example in DE-PS 134 594, in DE-PS 273 654 and EV Proskurkin & NS Gorbunov, "Galvanizing, sherardizing and other zinc diffusion coatings", Technicopy Limited, England, 1972, pages 1-68. 89
  • a disadvantage of the known Sherardisierclar is the comparatively high zinc consumption, which is caused by the combustion of zinc in the initially present in the reaction space air atmosphere with an oxygen concentration of 21 vol .-%, because the burned zinc is no longer available for coating.
  • retorts commonly used in the sherardizing process are also disadvantageous.
  • retorts are used for this purpose, which are rotated or moved in an oven so as to achieve a uniform distribution of the zinc dust and the filler, and to make the number of ovens lower than that of the Retorts can be kept.
  • the seals are also within the combustion chamber. Since these are not completely tight, air and gaseous oxygen-containing combustion products can enter the retort during the heat treatment, which impairs the process reliability and, in particular, increases the zinc consumption for the above reasons.
  • the object of the present invention is therefore to provide a method for diffusion coating a surface of a substrate with zinc, which can be used to obtain very uniform zinc coatings with excellent corrosion resistance, even when complicatedly formed substrates are used a rotating or otherwise moving retort must be performed, which, based on the surface of the to zinciferous substrate, low zinc consumption and can be dispensed with the use of filler and the use of loose zinc dust during the heat treatment.
  • this object is achieved by providing a method according to claim 1 and in particular a method for diffusion-coating a surface of a metallic substrate with zinc, which comprises the following steps:
  • step b) drying the substrate obtained in process step a ⁇ or a2), c) carrying out a heat treatment of the substrate obtained in process step b) at a temperature between 200 and 500 ° C, but preferably below the melting temperature of the diffusion source under a protective gas atmosphere forming a zinc-containing diffusion layer on the substrate, and d) removing the mixture applied in step a ⁇ or aa).
  • the reaction chambers used in the process according to the invention unlike the Sherardisier processor usually used in ovens positioned movable retorts can be made much simpler, which reduces investment costs.
  • the substrates to be coated in the reaction space do not have to be stored on a rack, in contrast to the movable retorts conventionally used in sherardization processes.
  • the zinc consumption is further reduced in the inventive method, because it is possible due to the application of the zinc as a firmly adhering layer on the substrate surface to be coated before performing the heat treatment, only as much zinc on the substrate surface, as for the later Coating is required. For this reason, the zinc used in the process according to the invention is at least almost completely consumed. For this reason too, the process costs in the process according to the invention are significantly lower than in the processes known from the prior art.
  • a protective gas atmosphere is understood as meaning a gas or gas mixture which is less than 10%, preferably less than 1%, more preferably less than 100 ppm, even more preferably less than 10 ppm, very preferably less than 1 ppm and most preferably contains at most 0, 1 ppm oxygen.
  • the application of the diffusion source zinc according to the process step ai), ie it is applied to the surface to be coated of the substrate, a suspension containing a liquid and zinc and / or a zinc alloy.
  • the liquid used is preferably water, and more preferably distilled water. Since liquids containing water or water react or react with zinc with hydrogen formation at elevated temperatures, a cooled suspension is preferably used in process step a 1, more preferably one at a temperature of less than 20 ° C., and most preferably cooled to a temperature of less than 10 0 C suspension.
  • liquid hydrocarbons As an alternative to water, it is also possible to use liquid hydrocarbons, alcohols or ketones or other liquids or liquid mixtures as liquid, provided that they are volatile, if necessary react to a limited extent with zinc and preferably dissolve salts.
  • Preferred examples of these are trichlorethylene, dichloromethane, benzene, xylene, toluene or C 1 -C 10 alcohols, in particular methanol, ethanol, propanol and butanol.
  • the suspension used in process step a ⁇ may be added to at least one further compound, which is selected from the group, in addition to the liquid and the zinc or zinc alloy which consists of dispersants, binders, wetting agents and any mixtures of two or more of the aforementioned compounds. While the dispersant improves the homogeneity of the suspension, and thus uniform application of the diffusion source to the substrate surface, and the wetting agent facilitates wetting of the substrate surface, the binder acts as an adhesion enhancing adhesive.
  • the application of the diffusion source zinc is carried out according to method step a2), ie first a liquid, preferably an adhesion promoter, is applied to the surface of the substrate to be coated before subsequently applying to the liquid or liquid Adhesive zinc and / or a zinc alloy is applied.
  • a liquid preferably an adhesion promoter
  • Adhesive zinc and / or a zinc alloy is applied.
  • a solvent is optionally used in admixture with at least one further compound selected from the group consisting of dispersants, binders, wetting agents and any mixtures of two or more of the aforementioned compounds.
  • the solvent used is preferably water, and more preferably distilled water.
  • Water can also be used as solvent liquid hydrocarbons, alcohols or ketones or other liquids or liquid mixtures, provided that they are volatile, if necessary, react with limited zinc and preferably salts can solve.
  • Preferred examples of these are trichlorethylene, dichloromethane, benzene, xylene, toluene or C 1 -C 1 0 alcohols, in particular methanol, ethanol, propanol and butanol.
  • good adhesion of the zinc or zinc alloy to the substrate surface to be coated is achieved by drying the liquid applied to the substrate surface or the adhesive applied to the substrate surface in process step b) Zinc reached.
  • at least one compound selected from the group consisting of dispersant, binder, and the liquid / adhesion promoter used in process step a2) may be added. Wetting agent and any mixtures of two or more of the aforementioned compounds.
  • the suspension applied in method step a 1 or the liquid / adhesion promoter applied in method step a 2) at least one binder, wherein the binder is preferably selected from the group consisting of halogen salts, sulfates, sulfites, phosphates, silicates, boron compounds, water glass and any mixtures of two or more of the aforementioned compounds.
  • the binder is selected from zinc chloride, sodium chloride, potassium chloride, ammonium chloride, zinc sulfate and any mixtures of two or more of the aforementioned compounds.
  • the suspension or the liquid / adhesion promoter applied in process step a) may preferably contain at least one compound which is selected from the group consisting of surfactants and alcohols.
  • suitable alcohols are methanol, ethanol, propanol, butanol or pentanol.
  • the applied suspension or applied in the step a2), liquid prior to application to the substrate to a temperature of less than 20 ° C and cooled in step ai) preferably to a temperature of less than 10 0 C.
  • An exemplary suspension suitable for carrying out the first embodiment of the present invention may be, for example, water saturated with sodium chloride, zinc, zinc chloride (for example, in an amount of 1% by weight) and alcohol (preferably ethanol or methanol).
  • An example of a suitable adhesion promoter for carrying out the second embodiment of the present invention is, for example, a solution consisting of water, sodium chloride, zinc chloride and alcohol (preferably ethanol or methanol).
  • zinc in the form of zinc powder or zinc dust having an average particle size of not more than 100 ⁇ m, preferably not more than 20 ⁇ m and particularly preferably not more than 10 ⁇ m, is used in method step ai) or alternatively in method step a2).
  • zinc powder or zinc dust having an average particle size of not more than 100 ⁇ m, preferably not more than 20 ⁇ m and particularly preferably not more than 10 ⁇ m is used in method step ai) or alternatively in method step a2).
  • zinc powder or zinc dust having an average particle size of not more than 100 ⁇ m, preferably not more than 20 ⁇ m and particularly preferably not more than 10 ⁇ m
  • Zinc dust with a mean particle size between 3 and 6 ⁇ m and with a maximum particle size of 70 ⁇ m will get good results.
  • the zinc used has a zinc content between 90 and 100 wt .-% and particularly preferably a zinc content between 99 and 100 wt .-%.
  • the present invention is not limited. This can be done for example by spraying, dipping, brushing, rolling or brushing.
  • the diffusion medium ie the zinc or the zinc alloy
  • the drying in the process step b) is carried out at a temperature between 40 and 250 0 C.
  • the substrate may additionally lent before coating, ie before step c) and preferably before Step b), preferably to a temperature between 40 and 250 0 C are heated.
  • the heat treatment in process step c) can in principle be carried out at any temperature and duration known for conventional sherardization processes.
  • the heat treatment is carried out at a temperature between 300 and 420 0 C and particularly preferably at a temperature between 340 and 410 0 C.
  • the heat treatment should preferably be carried out at a temperature lower than the melting temperature of the diffusion source, ie, the zinc or the zinc alloy applied in the step ai) and / or Si2), otherwise there is a fear of sintering of the substrate surface ,
  • the duration of the heat treatment may be, for example, between 10 minutes and 10 hours.
  • the heat treatment according to the invention is carried out under a protective gas atmosphere
  • protective gas atmosphere here is a gas or a gas mixture is called which contains less than 10% oxygen.
  • Particularly good results are obtained when the protective gas atmosphere during the heat treatment in process step c) less than 1%, more preferably less than 100 ppm, even more preferably less than 10 ppm, most preferably less than 1 ppm and most preferably not more than 0 Contains 1 ppm oxygen.
  • the present invention is not limited in the pressure at which the heat treatment is performed.
  • the heat treatment can be carried out at atmospheric pressure or a slight overpressure of up to 1.5 bar, preferably between 1.02 and 1.2 bar. This ensures that in the event of accidental leakage in the retort during the heat treatment, no air enters the retort.
  • the process according to the invention is preferably carried out without filler.
  • the filler content in the retort during the heat treatment is less than 20%, more preferably less than 10% and most preferably less than 1% ,
  • the retort with the substrate to be coated and the diffusion source adhered thereto is first heated to the heat treatment temperature before the temperature is maintained for a time sufficient for the heat treatment and the retort is finally cooled to room temperature.
  • heat treatment is understood to be the period of time during which the temperature required for heat treatment is maintained, ie excludes during the heating and cooling phase.
  • the heat treatment is carried out under a protective gas atmosphere, whereas during the heating rate and / or the cooling phase no Intergasatmo- sphere must be present, although this is less preferred.
  • the oxygen content in the atmosphere contained in the reaction space in which the heat treatment is carried out already before the start of the heat treatment i. before the temperature at which the heat treatment is carried out, ie already before or at the latest during the heating phase, to less than 10%, preferably less than 1%, more preferably less than 100 ppm, even more preferably less than 10 ppm, more preferably less than 1 ppm and most preferably not more than 0.1 ppm. This reliably prevents zinc from being burnt when the reaction chamber is heated up by oxygen.
  • the reaction space in which the process step c) is carried out to reduce the oxygen content in the protective gas atmosphere contained in the reaction space to less than 10%, preferably to less than 1%. , more preferably less than 100 ppm, even more preferably less than 10 ppm, most preferably less than 1 ppm, and most preferably not more than 0.1 ppm oxygen to be adjusted or maintained until the temperature in the reaction space after completion of the heat treatment is cooled to less than 200 0 C / has been.
  • the mixture or the diffusion source applied after the heat treatment is removed from the coated substrate by, for example, washing, ultrasonic treatment or brushing of the coated substrate in the process step a or the process step.
  • the coated substrate can be passivated after the heat treatment, preferably after removal of the mixture applied in process step ai) or in process step a2).
  • the method according to the invention is particularly suitable for coating substrates which consist of a zinc-settable metal, preferably iron and its alloys, such as steel and cast iron, copper and its alloys and / or aluminum and its alloys.
  • a zinc-settable metal preferably iron and its alloys, such as steel and cast iron, copper and its alloys and / or aluminum and its alloys.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

L'invention concerne un procédé de revêtement de diffusion d'une surface d'un substrat métallique avec du zinc comprenant les étapes consistant à : a1) appliquer une suspension, comprenant un liquide et du zinc et/ou un alliage de zinc utilisé en tant que source de diffusion ou donneur de zinc, à la surface du substrat à recouvrir, ou a2) appliquer un liquide à la surface du substrat à recouvrir et appliquer ultérieurement le zinc et/ou l'alliage de zinc utilisé en tant que source de diffusion ou donneur de zinc au liquide; et b) sécher le substrat obtenu dans l'étape a1) ou a2); réaliser une traitement thermique du substrat obtenu dans l'étape b) à une température comprise entre 200 et 500°C, mais inférieure à la température de fusion de la source de diffusion dans une atmosphère de gaz de protection; et d) élimination du mélange appliqué dans l'étape a1) et a2).
EP10702601A 2009-01-27 2010-01-27 Procédé de revêtement de diffusion de zinc Withdrawn EP2391742A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009006190A DE102009006190A1 (de) 2009-01-27 2009-01-27 Zinkdiffusionsbeschichtungsverfahren
PCT/EP2010/000489 WO2010086151A1 (fr) 2009-01-27 2010-01-27 Procédé de revêtement de diffusion de zinc

Publications (1)

Publication Number Publication Date
EP2391742A1 true EP2391742A1 (fr) 2011-12-07

Family

ID=42270275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10702601A Withdrawn EP2391742A1 (fr) 2009-01-27 2010-01-27 Procédé de revêtement de diffusion de zinc

Country Status (5)

Country Link
US (1) US20120006450A1 (fr)
EP (1) EP2391742A1 (fr)
DE (1) DE102009006190A1 (fr)
SG (1) SG173143A1 (fr)
WO (1) WO2010086151A1 (fr)

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EP2931938B1 (fr) * 2012-12-12 2018-07-18 Kwik-Coat (Aust) Pty Ltd Procédé de fabrication de pièces de travail revêtues d'alliage
DE102013107011A1 (de) 2013-07-03 2015-01-08 Thyssenkrupp Steel Europe Ag Verfahren zum Beschichten von Cu-Langprodukten mit einer metallischen Schutzschicht und mit einer metallischen Schutzschicht versehenes Cu-Langprodukt
RU2547057C1 (ru) * 2013-12-24 2015-04-10 Виктор Иванович Кубанцев Способ получения защитных покрытий
JP6329924B2 (ja) * 2015-06-19 2018-05-23 三菱アルミニウム株式会社 熱交換器用アルミニウム合金管および熱交換器コア
CN105648399B (zh) * 2016-03-24 2018-10-26 华北电力大学（保定） 一种碳钢的表面改性方法
US20180370830A1 (en) * 2017-06-22 2018-12-27 Purpose Energy, Inc. System and method for continuous processing of organic waste with undigested solids recirculation
EP3425083A1 (fr) * 2017-07-03 2019-01-09 Ebbinghaus Verbund Management- und Dienstleistungs GmbH Procédé amélioré et appareil de galvanisation par diffusion à chaud et article ainsi fabriqué
DE102017215676A1 (de) * 2017-09-06 2019-03-07 Bayerische Motoren Werke Aktiengesellschaft Beschichtungsverfahren
NL2023379B1 (en) 2019-06-25 2021-02-01 Sherart B V A process for coating a surface of a substrate with a metal layer
CN113685470A (zh) * 2021-08-23 2021-11-23 南京科赫科技有限公司 一种高效防腐蚀碟簧及其加工工艺

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Also Published As

Publication number Publication date
WO2010086151A8 (fr) 2010-11-11
SG173143A1 (en) 2011-08-29
US20120006450A1 (en) 2012-01-12
WO2010086151A1 (fr) 2010-08-05
DE102009006190A1 (de) 2010-07-29

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