EP0389959B1 - Procédé de réalisation de revêtements protecteurs contre la corrosion et l'usure - Google Patents

Procédé de réalisation de revêtements protecteurs contre la corrosion et l'usure Download PDF

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Publication number
EP0389959B1
EP0389959B1 EP19900105401 EP90105401A EP0389959B1 EP 0389959 B1 EP0389959 B1 EP 0389959B1 EP 19900105401 EP19900105401 EP 19900105401 EP 90105401 A EP90105401 A EP 90105401A EP 0389959 B1 EP0389959 B1 EP 0389959B1
Authority
EP
European Patent Office
Prior art keywords
layer
layers
alloy
sprayed
hard
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.)
Expired - Lifetime
Application number
EP19900105401
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German (de)
English (en)
Other versions
EP0389959A1 (fr
Inventor
Hans-Theo Steine
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.)
ECG Immobilier SA
Original Assignee
Castolin SA
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 Castolin SA filed Critical Castolin SA
Publication of EP0389959A1 publication Critical patent/EP0389959A1/fr
Application granted granted Critical
Publication of EP0389959B1 publication Critical patent/EP0389959B1/fr
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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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment

Definitions

  • the invention relates to a method for producing wear-resistant and corrosion-resistant protective layers by thermal spraying according to the preamble of claim 1.
  • a first coating of a thickness between 0.0125 and 0.125 mm is applied to these objects, which is made of an alloy based on Ni, Co or Fe with proportions of chromium, aluminum and an element from the group containing yttrium and rare earths and then a second layer, the thickness of which is between half and four times the layer thickness of the first coating.
  • This second layer is highly corrosion-resistant and consists of an alloy with chromium, aluminum, elements of the group comprising yttrium, scandium, cerium, hafnium, zirconium, titanium and tantalum, supplemented by cobalt, nickel and iron with aluminum and chromium.
  • said article is subjected to a temperature treatment under protective gas, the temperature being between 1020 ° C. and 1200 ° C. for up to ten hours. Both layers are applied by means of plasma spraying.
  • a process for producing wear-resistant and corrosion-resistant layers by plasma spraying in which a coating material made of refractory metal carbides and a nickel-containing base alloy with 3 to 18 percent by weight boron is applied.
  • the carbides can be mixed with iron, cobalt or nickel and applied separately or mixed with the nickel-boron alloy.
  • a metal carbide layer (with or without metal binder) is first applied by means of plasma coating and then a second layer of a reactive Ni-based alloy. Then the thus coated article is heat treated so that the second layer melts, penetrates into the first layer and reacts with it.
  • GB-A-2 021 641 also describes a one-layer process which consists in that a mixture of metal carbides (with or without metal binder) and reactive nickel-based metal is applied in the plasma spraying process, after which the coated article is subjected to a heat treatment is subjected so that the reactive metal melts and reacts with the metal carbide portion.
  • US-A-3,054,693 discloses a coating process without any heat treatment. The main focus is on an alloy material made of molybdenum, which should alternate with layers of aluminum oxide.
  • the inventor has set himself the task of producing wear-resistant and corrosion-resistant coatings in a wide range with regard to composition and stress, in which the position of the hard materials can be influenced in a certain range.
  • the composition of the layers is predetermined by the spray material, and there is no possibility of influencing the position of any hard materials to be provided in the layer.
  • a hard material layer is sprayed on between a base layer and a cover layer made of an alloy based on Ni, Co and / or Fe, the layer thicknesses being between 0.02 mm and 0.5 mm, at a temperature between 600 ° and 1200 ° during the diffusion treatment; the diffusion time is from 10 min to 30 min.
  • different hard materials should be able to be used for the hard material layers per layer.
  • the coating according to the invention is thus produced by spraying two or more layers of alloys in layers, e.g. on Ni, Co and / or Fe basis with hard material intermediate layers, which are subsequently diffused with a heat treatment in a solid or partially liquid state to form a coating with the desired composition.
  • the variation in the composition of the coating is controlled via the layer thickness of the individual sprayed-on layers.
  • carbides, borides and / or silicides are used for the hard material intermediate layers.
  • the hard material layers mentioned can be constructed in such a way that different hard materials are used per layer.
  • An alloy based on Ni or Co is preferably used for the sprayed-on base or cover layer.
  • the intermediate layers from metals such as chromium, molybdenum and / or tungsten.
  • the diffusion process can be carried out in a vacuum furnace or in a muffle furnace with or without protective gas in the temperature range from 600 to 1200 ° C depending on the layer structure and alloy.
  • a protective coating against fretting should be applied to a machine part.
  • the diffusion process was carried out in a vacuum oven at a negative pressure of 1.33 Pa (10 ⁇ 2 Torr) in the temperature range from 900 to 1100 ° C for about 30 minutes.
  • Example I The same preparations and coatings as in Example I were selected, with the difference that the spraying was carried out with a plasma flame spray gun and the diffusion process was carried out in a muffle furnace with protective gas for 10 minutes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)

Claims (7)

  1. Procédé pour produire des couches protectrices résistantes à l'usure et à la corrosion par pulvérisation thermique, dans lequel on pulvérise plusieurs couches minces faites de matériaux d'alliage et ayant une épaisseur de couche prédéterminée, puis on procède à un traitement de diffusion à des températures allant jusqu'à 1200°C, pour former une couche ayant une composition déterminée, à l'état solide et en partie à l'état liquide ainsi qu'en fonction du temps,
    caractérisé
    en ce qu'entre une couche de base et une couche de recouvrement faites d'un alliage à base de Ni, Co et/ou Fe, on pulvérise une couche de matière dure, les épaisseurs des couches étant comprises entre 0,02 mm et 0,5 mm, et en ce que la température utilisée pour le traitement de diffusion est comprise entre 600° et 1200° et le temps de diffusion est de 10 min à 30 min.
  2. Procédé selon la revendication 1, caractérisé en ce que, dans le cas de plus de trois couches pulvérisées, on utilise pour les couches de matière dure différentes matières dures pour les différentes couches.
  3. Procédé selon la revendication 1 ou 2, caractérisé par une couche de matière dure pulvérisée faite de carbures, borures et/ou siliciures.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'au moins une des couches de matériaux d'alliage est faite de métaux comme le chrome, le molybdène, et/ou le tungstène.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé par des épaisseurs de couches situées dans l'intervalle de 0,05 à 0,3 mm.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé par du carbure de tungstène utilisé comme couche de matière dure avec une épaisseur de couche de 0,2 mm, les couches d'alliage ayant une épaisseur de 0,1 mm.
  7. Procédé selon la revendication 6, caractérisé en ce que le processus de diffusion est exécuté dans un four sous vide sous un vide de 1,33 Pa (10⁻² Torr) dans l'intervalle de température de 900°C à 1100°C, pendant environ 30 min, la couche de base et la couche de recouvrement étant faites d'un alliage NiCrBSi, et la couche intermédiaire entre deux couches de matière dure étant faite d'un alliage NiCr.
EP19900105401 1989-03-28 1990-03-22 Procédé de réalisation de revêtements protecteurs contre la corrosion et l'usure Expired - Lifetime EP0389959B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH108189A CH677498A5 (fr) 1989-03-28 1989-03-28
CH1081/89 1989-03-28

Publications (2)

Publication Number Publication Date
EP0389959A1 EP0389959A1 (fr) 1990-10-03
EP0389959B1 true EP0389959B1 (fr) 1994-09-14

Family

ID=4202012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900105401 Expired - Lifetime EP0389959B1 (fr) 1989-03-28 1990-03-22 Procédé de réalisation de revêtements protecteurs contre la corrosion et l'usure

Country Status (4)

Country Link
EP (1) EP0389959B1 (fr)
CH (1) CH677498A5 (fr)
DE (1) DE59007099D1 (fr)
ES (1) ES2063848T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3941853C1 (fr) * 1989-12-19 1991-04-11 Mtu Muenchen Gmbh
DE4134133A1 (de) * 1991-10-15 1993-04-22 Castolin Sa Verfahren zum beschichten metallischer oberflaechen und dessen verwendung
AT398580B (de) * 1991-11-05 1994-12-27 Strauss Helmut Beschichtung für metallische oder nichtmetallische substrate, verfahren und vorrichtung zu deren herstellung
RU2109843C1 (ru) * 1996-12-17 1998-04-27 Йелстаун Корпорейшн Н.В. Способ изготовления деталей с упрочненной рабочей поверхностью
US6294260B1 (en) * 1999-09-10 2001-09-25 Siemens Westinghouse Power Corporation In-situ formation of multiphase air plasma sprayed barrier coatings for turbine components
US6677064B1 (en) 2002-05-29 2004-01-13 Siemens Westinghouse Power Corporation In-situ formation of multiphase deposited thermal barrier coatings

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB400752A (en) * 1932-08-31 1933-11-02 Metallisation Ltd A method of protecting articles of oxidisable metals or metal alloys from oxidation, deterioration or corrosion
FR1046251A (fr) * 1951-12-08 1953-12-04 Snecma Matériau composite fritté céramique-métal pouvant être utilisé notamment pour la fabrication d'organes de machines thermiques et son procédé d'obtention
GB803649A (en) * 1955-10-22 1958-10-29 Birmingham Small Arms Co Ltd Improvements in or relating to sprayed metal coatings
US3054694A (en) * 1959-10-23 1962-09-18 Jr William L Aves Metal-ceramic laminated coating and process for making the same
FR1434158A (fr) * 1964-11-25 1966-04-08 Sfec Perfectionnements aux revêtements protecteurs réfractaires, et procédé de fabrication de ces éléments
US3837894A (en) * 1972-05-22 1974-09-24 Union Carbide Corp Process for producing a corrosion resistant duplex coating
US4198442A (en) * 1977-10-31 1980-04-15 Howmet Turbine Components Corporation Method for producing elevated temperature corrosion resistant articles
US4173685A (en) * 1978-05-23 1979-11-06 Union Carbide Corporation Coating material and method of applying same for producing wear and corrosion resistant coated articles

Also Published As

Publication number Publication date
ES2063848T3 (es) 1995-01-16
CH677498A5 (fr) 1991-05-31
DE59007099D1 (de) 1994-10-20
EP0389959A1 (fr) 1990-10-03

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