EP0389959A1 - Method for applying corrosion and abrasion protective coatings - Google Patents

Method for applying corrosion and abrasion protective coatings Download PDF

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Publication number
EP0389959A1
EP0389959A1 EP90105401A EP90105401A EP0389959A1 EP 0389959 A1 EP0389959 A1 EP 0389959A1 EP 90105401 A EP90105401 A EP 90105401A EP 90105401 A EP90105401 A EP 90105401A EP 0389959 A1 EP0389959 A1 EP 0389959A1
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EP
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Prior art keywords
layer
layers
alloy
sprayed
hard material
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.)
Granted
Application number
EP90105401A
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German (de)
French (fr)
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EP0389959B1 (en
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
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Publication date
Application filed by Castolin SA filed Critical Castolin SA
Publication of EP0389959A1 publication Critical patent/EP0389959A1/en
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Publication of EP0389959B1 publication Critical patent/EP0389959B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 of variable composition by thermal spraying.
  • thermally sprayed wear and corrosion resistant layers has been known for a long time.
  • metals, alloys, hard materials and their mixtures are used.
  • the disadvantage of these layers is that the composition and the hard material content are determined by the spray material.
  • the purpose of the invention is now to produce wear-resistant and corrosion-resistant coatings in a wide range with regard to the composition and the stress, in which the position of the hard materials can be influenced in a certain range.
  • two or more thin layers of materials of different compositions with a predetermined layer thickness are sprayed on and then diffused at temperatures between 600 to 1200 ° C. to form a layer of a certain composition in the solid state and as a function of time.
  • the coating according to the invention is thus produced by layer-wise spraying on two or more layers of alloys based on Ni, Co and / or Fe with or without 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.
  • the range for the layer thickness must be between 0.02 to 0.5 mm, preferably 0.05 to 0.3 mm.
  • 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.
  • the base and top layers An alloy of Ni, Co and / or Fe is used for the base and top layers;
  • the sprayed-on alloy layer (s) advantageously consist of a Ni-based alloy or a Co-based alloy.
  • the sprayed-on alloy layers in a coating should consist of different alloys of Ni, Co and / or Fe base.
  • 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 o 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 10 ⁇ 2 Torr in the temperature range from 900 to 1100 o 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.

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  • 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)

Abstract

A process for the production of hard-wearing and corrosion- resistant protective layers by thermal spraying is to be improved by spraying on two or more thin layers of materials of different compositions with a predetermined layer thickness and then effecting diffusion at temperatures between 600 and 1200 DEG C for the formation of a layer having a certain composition. The layer thicknesses should be in the range from 0.02 to 0.5 mm, preferably from 0.05 to 0.3 mm.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von verschleiß- und korrosionsbeständigen Schutzschichten variabler Zusammensetzung durch thermisches Spritzen.The invention relates to a method for producing wear-resistant and corrosion-resistant protective layers of variable composition by thermal spraying.

Das Herstellen von thermisch gespritzten verschleiß- und korrosionsbeständigen Schichten ist seit längerer Zeit bekannt. Hierbei werden Metalle, Legierungen, Hartstoffe und deren Gemische eingesetzt.The production of thermally sprayed wear and corrosion resistant layers has been known for a long time. Here metals, alloys, hard materials and their mixtures are used.

Der Nachteil dieser Schichten besteht darin, daß die Zusammensetzung sowie der Hartstoffanteil durch den Spritzwerkstoff vorgegeben ist.The disadvantage of these layers is that the composition and the hard material content are determined by the spray material.

Für Schichten, die nachträglich eingeschmolzen werden, können für die herkömmlichen Beschichtungsverfahren nur Legierungen auf der NiBSi-, NiCrBSi- und CoNiCrWBSI-Basis mit und ohne Hartstoffen verwendet werden.For layers that are subsequently melted down, only alloys based on NiBSi, NiCrBSi and CoNiCrWBSI with and without hard materials can be used for the conventional coating processes.

Bei Schichten, die mit einem Legierung-Hartstoff-Gemisch hergestellt werden, besteht bislang keine Möglichkeit, die Lage der Hartstoffe in der Schicht zu beeinflussen.In the case of layers which are produced with an alloy-hard material mixture, there has so far been no possibility of influencing the position of the hard materials in the layer.

Zweck der Erfindung ist es nun, verschleiß- und korrosionsbeständige Beschichtungen in einem weiten Bereich in Hinsicht auf die Zusammensetzung und die Beanspruchung herzustellen, bei denen die Lage der Hartstoffe in einem bestimmten Bereich beeinflußt werden kann.The purpose of the invention is now to produce wear-resistant and corrosion-resistant coatings in a wide range with regard to the composition and the stress, in which the position of the hard materials can be influenced in a certain range.

Zur Lösung dieser Aufgabe führt, daß zwei oder mehrere dünne Schichten aus Werkstoffen verschiedener Zusammensetzung mit vorbestimmter Schichtstärke aufgespritzt sowie anschließend bei Temperaturen zwischen 600 bis 1200o C zur Bildung einer Schicht bestimmter Zusammensetzung in festem Zustand sowie in Abhängigkeit von der Zeit diffundiert werden.To achieve this object, two or more thin layers of materials of different compositions with a predetermined layer thickness are sprayed on and then diffused at temperatures between 600 to 1200 ° C. to form a layer of a certain composition in the solid state and as a function of time.

Die Herstellung der erfindungsgemäßen Beschichtung erfolgt also durch schichtweises Aufspritzen von zwei oder mehreren Schichten aus Legierungen auf Ni, Co und/oder Fe Basis mit oder ohne Hartstoffzwischenschichten, die nachträglich mit einer Wärmebehandlung in festen oder teilweise flüssigem Zustand zu einer Beschichtung mit gewünschter Zusammensetzung diffundiert werden.The coating according to the invention is thus produced by layer-wise spraying on two or more layers of alloys based on Ni, Co and / or Fe with or without 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 .

Die Variation der Zusammensetzung der Beschichtung wird über die Schichtstärke der einzelnen aufgespritzten Schichten gesteuert. Der Bereich für die Schichtstärke muß zwischen 0,02 bis 0,5 mm, vorzugsweise 0,05 bis 0,3 mm, liegen.The variation in the composition of the coating is controlled via the layer thickness of the individual sprayed-on layers. The range for the layer thickness must be between 0.02 to 0.5 mm, preferably 0.05 to 0.3 mm.

Um eine gute Verschleißbeständigkeit zu erreichen, werden für die Hartstoffzwischenschichten Karbide, Boride und/oder Silicide verwendet. Außerdem können erfindungsgemäß die erwähnten Hartstoffschichten so aufgebaut werden, daß pro Schicht verschiedene Hartstoffe eingesetzt werden.In order to achieve good wear resistance, carbides, borides and / or silicides are used for the hard material intermediate layers. In addition, according to the invention, the hard material layers mentioned can be constructed in such a way that different hard materials are used per layer.

Für die Grund- und die Deckschicht wird eine Legierung aus Ni, Co und/oder Fe herangezogen; vorteilhafterweise bestehen die aufgespritzte/n Legierungsschicht/en aus einer Ni Basis Legierung oder aus einer Co Basis Legierung.An alloy of Ni, Co and / or Fe is used for the base and top layers; The sprayed-on alloy layer (s) advantageously consist of a Ni-based alloy or a Co-based alloy.

Im Rahmen der Erfindung liegt es zudem, daß die aufgespritzten Legierungsschichten in einer Beschichtung aus verschiedenen Legierungen aus Ni, Co und/oder Fe Basis bestehen sollen.It is also within the scope of the invention that the sprayed-on alloy layers in a coating should consist of different alloys of Ni, Co and / or Fe base.

Auch ist es vorgesehen, die Zwischenschichten aus Metallen wie Chrom, Molybdän und/oder Wolfram zu fertigen. Der Diffusionsvorgang kann in einem Vakuumofen oder in einem Muffelofen mit oder ohne Schutzgas im Temperaturbereich von 600 bis 1200o C je nach Schichtaufbau und Legierung durchgeführt werden.It is also envisaged to manufacture 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 o C depending on the layer structure and alloy.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben ich aus der nachfolgenden Beschreibung bevorzugter Beispiele.Further advantages, features and details of the invention result from the following description of preferred examples.

Beispiel IExample I

Auf ein Maschinenteil soll eine Schutzbeschichtung gegen Reibverschleiß aufgebracht werden.A protective coating against fretting should be applied to a machine part.

Auf die durch Strahlen vorbereitete Oberfläche wurden mit einem Flammspritzgerät fünf Schichten einer Schichtstärke für die Legierungsschichten von 0,1 mm und die Hartstoffschichten von 0,2 mm in der Reihenfolge Legierungsschicht - Hartstoffschicht - Legierungsschicht - Hartstoffschicht - Legierungsschicht aufgespritzt. Als Legierungsschicht wurde für die Grund- und Deckschicht eine NiCrBSI Legierung verwendet. Und für die Zwischenschicht eine NiCr Legierung. Die zwei Hartstoffschichten bestanden aus Wolframkarbid.Five layers of a layer thickness for the alloy layers of 0.1 mm and the hard material layers of 0.2 mm were sprayed onto the surface prepared by blasting using a flame spraying device in the order of alloy layer - hard material layer - alloy layer - hard material layer - alloy layer. A NiCrBSI alloy was used as the alloy layer for the base and top layers. And a NiCr alloy for the intermediate layer. The two hard material layers consisted of tungsten carbide.

Der Diffusionsvorgang wurde im Vakuumofen bei einem Unterdruck von 10⁻² Torr im Temperaturbereich von 900 bis 1100o C während etwa 30 min durchgeführt.The diffusion process was carried out in a vacuum oven at a negative pressure of 10⁻² Torr in the temperature range from 900 to 1100 o C for about 30 minutes.

Beispiel IIExample II

Es wurden die gleichen Vorbereitungen und Beschichtungen wie im Beispiel I gewählt mit dem Unterschied, daß das Aufspritzen mit einer Plasmaflammspritzpistole erfolgte und der Diffusionsvorgang in einem Muffelofen mit Schutzgas während 10 min durchgeführt wurde.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.

Claims (11)

1. Verfahren zum Herstellen von verschleiß- und korrosions­beständigen Schutzschichten durch thermisches Spritzen,
dadurch gekennzeichnet,
daß zwei oder mehrere dünne Schichten aus Werkstoffen verschiedener Zusammensetzung mit vorbestimmter Schicht­stärke aufgespritzt sowie anschließend bei Temperaturen zwischen 600 bis 1200o C zur Bildung einer Schicht be­stimmter Zusammensetzung in festem Zustand sowie in Ab­hängigkeit von der Zeit diffundiert werden.1. Process for producing wear-resistant and corrosion-resistant protective layers by thermal spraying,
characterized,
that two or more thin layers of materials of different compositions are sprayed with a predetermined layer thickness and then diffused at temperatures between 600 to 1200 o C to form a layer of certain composition in the solid state and as a function of time. 2. Verfahren nach Anspruch 1, gekennzeichnet durch eine Diffusionszeit von zumindest 10 min, bevorzugt 30 min.2. The method according to claim 1, characterized by a diffusion time of at least 10 min, preferably 30 min. 3. Verfahren nach Anspruch 1 oder 2, gekennzeichnet durch Schichtdicken im Bereich von 0,02 bis 0,5 mm, bevorzugt 0,05 bis 0,3 mm.3. The method according to claim 1 or 2, characterized by layer thicknesses in the range of 0.02 to 0.5 mm, preferably 0.05 to 0.3 mm. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zumindest zwei der aufgespritzten Schichten aus einer Legierung und eine Schicht aus einem Hartstoff bestehen4. The method according to any one of claims 1 to 3, characterized in that at least two of the sprayed-on layers consist of an alloy and a layer of a hard material 5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Hartstoffschicht zwischen den Legierungsschichten angeordnet wird.5. The method according to claim 4, characterized in that the hard material layer is arranged between the alloy layers. 6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß für die Hartstoffschichten pro Schicht verschiedene Hartstoffe verwendet werden.6. The method according to any one of claims 1 to 5, characterized in that different hard materials are used for the hard material layers per layer. 7. Verfahren nach einem der Ansprüche 1 bis 6, gekennzeichnet durch eine ausgespritzte Hartstoffschicht aus Karbiden, Boriden und/oder Siliciden.7. The method according to any one of claims 1 to 6, characterized by an injected hard material layer made of carbides, borides and / or silicides. 8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Grund- und die Deckschicht aus einer Ni, Co und/oder Fe Legierung bestehen.8. The method according to any one of claims 1 to 7, characterized in that the base and the top layer consist of a Ni, Co and / or Fe alloy. 9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die aufgespritzte/n Legierungsschicht/en aus einer Ni Basis Legierung oder aus einer Co Basis Legierung besteht/bestehen.9. The method according to any one of claims 1 to 8, characterized in that the sprayed / n alloy layer (s) consists of a Ni-based alloy or a Co-based alloy. 10. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die aufgespritzten Legierungsschichten in einer Beschichtung aus verschiedenen Legierungen aus Ni, Co und/oder Fe Basis bestehen.10. The method according to any one of claims 1 to 8, characterized in that the sprayed-on alloy layers consist in a coating of different alloys of Ni, Co and / or Fe base. 11. Verfahren nach einem der Ansprüche 1 bis 10, gekennzeichnet durch wenigstens eine Zwischenschicht aus Metallen wie Chrom, Molybdän und/oder Wolfram.11. The method according to any one of claims 1 to 10, characterized by at least one intermediate layer made of metals such as chromium, molybdenum and / or tungsten.
EP19900105401 1989-03-28 1990-03-22 Method for applying corrosion and abrasion protective coatings Expired - Lifetime EP0389959B1 (en)

Applications Claiming Priority (2)

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

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EP0389959A1 true EP0389959A1 (en) 1990-10-03
EP0389959B1 EP0389959B1 (en) 1994-09-14

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CH (1) CH677498A5 (en)
DE (1) DE59007099D1 (en)
ES (1) ES2063848T3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239264A (en) * 1989-12-19 1991-06-26 Mtu Muenchen Gmbh Method for depositing wear-resistant dispersion coatings
FR2682399A1 (en) * 1991-10-15 1993-04-16 Castolin Sa Process for coating metal surfaces and application of this process
WO1998027245A1 (en) * 1996-12-17 1998-06-25 Yalestown Corporation N.V. Method for manufacturing parts with a reinforced working surface
WO2001018274A1 (en) * 1999-09-10 2001-03-15 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398580B (en) * 1991-11-05 1994-12-27 Strauss Helmut COATING FOR METAL OR NON-METAL SUBSTRATES, METHOD AND DEVICE FOR THE PRODUCTION THEREOF

Citations (8)

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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 (en) * 1951-12-08 1953-12-04 Snecma Sintered ceramic-metal composite material which can be used in particular for the manufacture of thermal machine parts and the process for obtaining it
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 (en) * 1964-11-25 1966-04-08 Sfec Improvements to refractory protective coatings, and method of manufacturing these elements
FR2185696A1 (en) * 1972-05-22 1974-01-04 Union Carbide Corp
FR2407272A1 (en) * 1977-10-31 1979-05-25 Howmet Turbine Components PROCESS FOR OBTAINING ARTICLES RESISTANT TO CORROSION AT HIGH TEMPERATURE
GB2021641A (en) * 1978-05-23 1979-12-05 Union Carbide Corp Metal carbide nickel boron plasma spray powders

Patent Citations (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 (en) * 1951-12-08 1953-12-04 Snecma Sintered ceramic-metal composite material which can be used in particular for the manufacture of thermal machine parts and the process for obtaining it
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 (en) * 1964-11-25 1966-04-08 Sfec Improvements to refractory protective coatings, and method of manufacturing these elements
FR2185696A1 (en) * 1972-05-22 1974-01-04 Union Carbide Corp
FR2407272A1 (en) * 1977-10-31 1979-05-25 Howmet Turbine Components PROCESS FOR OBTAINING ARTICLES RESISTANT TO CORROSION AT HIGH TEMPERATURE
GB2021641A (en) * 1978-05-23 1979-12-05 Union Carbide Corp Metal carbide nickel boron plasma spray powders

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 362 (C-389)[2419], 4. Dezember 1986; & JP-A-61 159 565 (HITACHI ZOSEN CORP.) 19-07-1986 *
PATENT ABSTRACTS OF JAPAN, Band 4, Nr. 61 (C-9)[543], 8. Mai 1980, Seite 63 C 9; & JP-A-55 28 352 (NIPPON TUNGSTEN K.K.) 28-02-1980 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239264A (en) * 1989-12-19 1991-06-26 Mtu Muenchen Gmbh Method for depositing wear-resistant dispersion coatings
GB2239264B (en) * 1989-12-19 1993-10-06 Mtu Muenchen Gmbh Method for depositing wear-resistant dispersion coatings
FR2682399A1 (en) * 1991-10-15 1993-04-16 Castolin Sa Process for coating metal surfaces and application of this process
BE1006996A5 (en) * 1991-10-15 1995-02-14 Castolin Sa Coating process for metallic and application of the method.
WO1998027245A1 (en) * 1996-12-17 1998-06-25 Yalestown Corporation N.V. Method for manufacturing parts with a reinforced working surface
WO2001018274A1 (en) * 1999-09-10 2001-03-15 Siemens Westinghouse Power Corporation In-situ formation of multiphase air plasma sprayed barrier coatings for turbine components
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

Also Published As

Publication number Publication date
EP0389959B1 (en) 1994-09-14
CH677498A5 (en) 1991-05-31
DE59007099D1 (en) 1994-10-20
ES2063848T3 (en) 1995-01-16

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