WO2010020274A1 - Revêtement destiné à diminuer l'effet de frottement et à améliorer la résistance à l'usure d'un composant dans une machine de bande en fibre et procédé pour sa production - Google Patents

Revêtement destiné à diminuer l'effet de frottement et à améliorer la résistance à l'usure d'un composant dans une machine de bande en fibre et procédé pour sa production Download PDF

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Publication number
WO2010020274A1
WO2010020274A1 PCT/EP2008/060800 EP2008060800W WO2010020274A1 WO 2010020274 A1 WO2010020274 A1 WO 2010020274A1 EP 2008060800 W EP2008060800 W EP 2008060800W WO 2010020274 A1 WO2010020274 A1 WO 2010020274A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
component
layer
wear resistance
fibre web
Prior art date
Application number
PCT/EP2008/060800
Other languages
English (en)
Inventor
Riku Pihko
Original Assignee
Metso Paper, Inc.
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 Metso Paper, Inc. filed Critical Metso Paper, Inc.
Priority to PCT/EP2008/060800 priority Critical patent/WO2010020274A1/fr
Publication of WO2010020274A1 publication Critical patent/WO2010020274A1/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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0605—Carbon
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/02—Pretreatment of the material to be coated
    • C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
    • C23C14/025—Metallic sublayers

Definitions

  • the present invention relates to a coating having, a method for producing the same and components provided with said coating.
  • the prior art comprises ceramic decks in wire and press sections, covered rolls and cylinders, different materials for doctor blades as well as fabrics on paper machines .
  • a plasma deposition process as illustrated by Fig. 1.
  • gas 1 is introduced into the vacuum chamber 2, which is ionized by an electrode 3 into plasma 4.
  • the outlet 5 of said chamber is connected to a not shown vacuum pump.
  • the plasma contains energetic ions which, supported by electron beams, have enough energy to vaporize a substrate provided on an evaporating dish 6 and this vapor is accelerated towards a component 7.
  • a temperature of 270 to 400 0 C is applied.
  • WO 99/54520 It is known from the prior art, for instance WO 99/54520, to apply coating materials such as DLC (diamond-like carbon) by PVD processes.
  • the coatings described in WO 99/54520 have a low friction and a hardness level of 6,000 to 10,000 HV.
  • the thickness of the coating is uniform all over and is typically 10 to 100 ⁇ m.
  • a first aspect of the invention concerns a method of producing a coating having low friction and improved wear resistance, characterised by the steps of forming on a base material a titanium layer for improving adhesion, evaporating a graphite material to obtain a carbon plasma, and accelerating said carbon plasma to a high speed before it hits the surface, thereby forming a pure carbon layer (ta-C) on top of said titanium layer.
  • a fluorinated diamond-like carbon (ta-C:F) is formed.
  • a second aspect of the invention is related to a coating having low friction and improved wear resistance, comprising a titanium layer on a base material, and a pure carbon layer (ta-C) formed on top of said titanium layer, wherein a hydrogen free amorphous carbon surface has 60 to 70 % of diamond bonds (sp 3 ) and 30 to 40 % of graphite bonds (sp 2 ) , and a thickness of the coating is 0.1 to 10 ⁇ m.
  • this coating has a coefficient of friction in dry contact of ta-C against metal or itself of 0.1, and a coefficient of friction in lubricated contact of ta-C against metal or itself of 0.01 to 0.05.
  • the coating preferably has a hardness of 4,000 to 10,000 HV.
  • an elastic modulus of the coating is preferably 500 to 800 GPa.
  • the coating is preferred to have an abrasion resistance 10 times better compared to PVD DLC C-H or WC/C coating.
  • a third aspect of the invention pertains to a component to be used in fibre web machines in a sliding contact against a counter surface of the fibre web machine, having a coating according to the second aspect of the invention.
  • the component having said coating is a metal belt.
  • the surface of a substrate is cleaned with ultra sound, solvent and/or ion spray cleaning. In case of steel, oxide removal is performed.
  • the substrate should have a surface roughness of smaller than 0.5 ⁇ m.
  • Plasma sources are used in which ionised plasma is shot with high kinetic energy in a vacuum chamber to the surface to be coated. Different acceleration units are necessary to achieve a high plasma flow of 10,000 km/sec. Further, different materials can be used with different plasma sources.
  • the coating process according to the present invention allows the coating to be performed in a temperature range below 100 0 C, preferably in a temperature range between 50 and 60 0 C.
  • the carbon atoms are bonded together to form a diamond-like hydrogen free coating.
  • This coating exhibits extreme low friction due to the absence of hydrogen.
  • the coating according to the present invention has an abrasion resistance which is ten times better compared to a PVD DLC C-H or WC/C coating.
  • the coefficient of friction in a metal/metal+oil system is 0.12 to 0.001.
  • Said substrate can be coated in a thickness of smaller than 10 ⁇ m.
  • the coating according to the present invention has a Vicker' s hardness of from 5000 to 10000 H, a modulus of elasticity of from 500 to 800 GPa and a heat transfer capacity as copper. Additionally, the coating exhibits acid resistance.
  • the surface roughness of the coating is the same as the surface roughness of the substrate. Accordingly, the surface roughness of the substrate is copied to the surface of the coating. This makes it possible to form impels or pockets on the substrate prior to the coating process which are maintained in the surface even after the coating process.
  • a hydrogen-free amorphous carbon surface with small scale topography and low friction can be formed.
  • Said surface may also comprise lubricating pockets which further decrease the friction between the coated surface and its counter surface. Further, due to the absence of hydrogen, the coating also has a superior corrosion resistance.
  • the coating can be produced economically over a large surface with high raw material utilising efficiency.
  • the coating can be overlapped, thus allowing coverage of a large surface by coating smaller areas at a time.
  • the thickness of the coating can be adjusted and, when needed, the coating can be adjusted to a small area.
  • the coating process of the present invention has the advantage that it allows coating of a surface in situ. This enables new coatings as well as repairs to be made on-site or in- machine (particularly for rolls, cylinders and belts) .
  • the coating devices are of moderate prices.
  • the coating shows a superior performance in cooperation with a fibre web. Further, the present inventors have found out that the bending stress resistance of a metal belt coated with the coating of the present invention exhibits fatigue values which are 15 to 35 % higher .
  • the coatings according to the present invention have been tested and the coatings exhibit a very high resistance to wear and bending, and also have a very low friction.
  • the coating can be made more resistant, with a lower friction than DLC (Diamond-Like-Coatings) made by PVD or PACVD methods.
  • DLC Diamond-Like-Coatings
  • the coatings of the present invention can be applied more easily on large surfaces. It has a big market potential since the coated surface brings an added value to a variety of products.
  • New products could be developed by utilising the coating of the invention, for example a low friction convergent gap for dewatering in wire section. With current surfaces such a product is not economically reasonable because of its high power effect and surface wear.
  • Figure 1 schematically shows a plasma deposition process of the common prior art
  • Figure 2 schematically shows the method of producing a coating according to the present invention.
  • Figure 2 illustrates a reaction chamber 12 equipped with a gas-outlet 15 which is connected to a not shown vacuum pump to ensure for low pressure conditions.
  • the plasma accelerator 16 electromagnetically accelerates the plasma 14 to a speed of 10000km/s towards the component 17 provided on a rotatable or moving apparatus 18. Thereby, said component 17 is coated at a temperature under 100 0 C and preferably of only 50-60 0 C.
  • the plasma source used is not especially limited and preferably comprises laser beam or vacuum arc techniques known in the art.
  • the ta-C coatings according to the present invention are typically made in the following way.
  • a base material is coated with a titanium layer to improve adhesion of the ta-C coating.
  • a pure carbon layer ta-C
  • the ta-C coatings of the present invention are made by evaporating graphite and accelerating the carbon plasma to a high speed before it hits the surface (cf . Fig. 2) .
  • a hydrogen free amorphous surface with 60 to 70 % of diamond bonds (sp 3 ) and 30 to 40 % of graphite bonds (sp 2 ) is formed.
  • the thickness of the ta-C coatings of the present invention is typically less than 10 ⁇ m.
  • a mixed carbon (ta-C) and fluorine layer may be coated on top of the carbon layer.
  • This optional layer can be used to improve, for example, cleanability properties of the surface in paper or board machine applications. This is important especially when the surface is heated and in contact with the web. Further, by using optional layers, for example hydrophilic / hydrophobic properties of the surface can be adjusted.
  • the coating according to the invention is applied for a component or components of web making machines, in particular for components being in sliding contact with fibres to be processed.
  • the coating can be preferably utilised for a roll, a metal belt, a doctor blade, or other sliding elements in a wire and press section (for instance high vacuum box, uhle box, shoe of an extended nip press, and so on) of paper making machines.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Vapour Deposition (AREA)
  • Paper (AREA)

Abstract

La présente invention porte sur un revêtement à faible frottement et à résistance à l'usure améliorée et sur le procédé permettant sa production. Le matériau de base comporte une couche de titane, et une couche de carbone pur (ta-C) revêt sa partie supérieure. Ledit revêtement présente également une dureté élevée et une résistance élevée aux contraintes de flexion. De préférence, ledit revêtement est appliqué sur des composants de machines de fabrication de papier, et il présente d'excellentes performances en coopération avec ladite bande en fibre.
PCT/EP2008/060800 2008-08-18 2008-08-18 Revêtement destiné à diminuer l'effet de frottement et à améliorer la résistance à l'usure d'un composant dans une machine de bande en fibre et procédé pour sa production WO2010020274A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/060800 WO2010020274A1 (fr) 2008-08-18 2008-08-18 Revêtement destiné à diminuer l'effet de frottement et à améliorer la résistance à l'usure d'un composant dans une machine de bande en fibre et procédé pour sa production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/060800 WO2010020274A1 (fr) 2008-08-18 2008-08-18 Revêtement destiné à diminuer l'effet de frottement et à améliorer la résistance à l'usure d'un composant dans une machine de bande en fibre et procédé pour sa production

Publications (1)

Publication Number Publication Date
WO2010020274A1 true WO2010020274A1 (fr) 2010-02-25

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Application Number Title Priority Date Filing Date
PCT/EP2008/060800 WO2010020274A1 (fr) 2008-08-18 2008-08-18 Revêtement destiné à diminuer l'effet de frottement et à améliorer la résistance à l'usure d'un composant dans une machine de bande en fibre et procédé pour sa production

Country Status (1)

Country Link
WO (1) WO2010020274A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011003254A1 (de) * 2011-01-27 2012-08-02 Federal-Mogul Burscheid Gmbh Gleitelement, insbesondere Kolbenring, mit einer Beschichtung sowie Verfahren zur Herstellung eines Gleitelements
WO2014177641A1 (fr) * 2013-04-30 2014-11-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé pour produire une couche anti-usure et couche anti-usure obtenue a l'aide dudit procédé
US20150292622A1 (en) * 2012-10-31 2015-10-15 Federal-Mogul Burscheid Gmbh Sliding element, in particular a piston ring, having a coating

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0380191A (ja) * 1989-08-23 1991-04-04 Yoshikatsu Nanba ダイヤモンド薄膜合成法
WO1998054376A1 (fr) * 1997-05-30 1998-12-03 Patinor As Procede de fabrication sous vide d'un revetement a base de carbone semblable au diamant
JP2002285328A (ja) * 2001-03-23 2002-10-03 Fuji Electric Co Ltd 硬質カーボン被膜、および該被膜に被覆された部材
WO2004104263A1 (fr) * 2003-05-22 2004-12-02 Argor Aljba S.A. Procede de formation d'un revetement super dur en carbone amorphe, sous vide
US20050175839A1 (en) * 2002-02-04 2005-08-11 Fujitsu Limited Tetrahedral amorphous carbon film and method of making same
WO2007020139A1 (fr) * 2005-08-18 2007-02-22 Nv Bekaert Sa Substrat revêtu d’une structure stratifiée comprenant une couche de carbone tétraédrique et une couche extérieure plus molle
US20070224349A1 (en) * 2004-08-26 2007-09-27 Schaeffler Kg Wear-Resistant Coating and Method for Producing Same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0380191A (ja) * 1989-08-23 1991-04-04 Yoshikatsu Nanba ダイヤモンド薄膜合成法
WO1998054376A1 (fr) * 1997-05-30 1998-12-03 Patinor As Procede de fabrication sous vide d'un revetement a base de carbone semblable au diamant
JP2002285328A (ja) * 2001-03-23 2002-10-03 Fuji Electric Co Ltd 硬質カーボン被膜、および該被膜に被覆された部材
US20050175839A1 (en) * 2002-02-04 2005-08-11 Fujitsu Limited Tetrahedral amorphous carbon film and method of making same
WO2004104263A1 (fr) * 2003-05-22 2004-12-02 Argor Aljba S.A. Procede de formation d'un revetement super dur en carbone amorphe, sous vide
US20070224349A1 (en) * 2004-08-26 2007-09-27 Schaeffler Kg Wear-Resistant Coating and Method for Producing Same
WO2007020139A1 (fr) * 2005-08-18 2007-02-22 Nv Bekaert Sa Substrat revêtu d’une structure stratifiée comprenant une couche de carbone tétraédrique et une couche extérieure plus molle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011003254A1 (de) * 2011-01-27 2012-08-02 Federal-Mogul Burscheid Gmbh Gleitelement, insbesondere Kolbenring, mit einer Beschichtung sowie Verfahren zur Herstellung eines Gleitelements
US9086148B2 (en) 2011-01-27 2015-07-21 Federal-Mogul Burscheid Gmbh Sliding element, in particular piston ring, having a coating and process for producing a sliding element
US20150292622A1 (en) * 2012-10-31 2015-10-15 Federal-Mogul Burscheid Gmbh Sliding element, in particular a piston ring, having a coating
US9488276B2 (en) * 2012-10-31 2016-11-08 Federal-Mogul Burscheid Gmbh Sliding element, in particular a piston ring, having a coating
WO2014177641A1 (fr) * 2013-04-30 2014-11-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé pour produire une couche anti-usure et couche anti-usure obtenue a l'aide dudit procédé
US9803273B2 (en) 2013-04-30 2017-10-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method of producing an anti-wear layer and anti-wear layer produced by means of said method

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