EP2128300A1 - Procédé destiné à l'injection de flammes à vitesse élevée - Google Patents

Procédé destiné à l'injection de flammes à vitesse élevée Download PDF

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Publication number
EP2128300A1
EP2128300A1 EP08009774A EP08009774A EP2128300A1 EP 2128300 A1 EP2128300 A1 EP 2128300A1 EP 08009774 A EP08009774 A EP 08009774A EP 08009774 A EP08009774 A EP 08009774A EP 2128300 A1 EP2128300 A1 EP 2128300A1
Authority
EP
European Patent Office
Prior art keywords
coating
component surface
particle stream
layer
particles
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Withdrawn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
EP08009774A
Other languages
German (de)
English (en)
Inventor
Thomas Berndt
Francis-Jurjen Dr. Ladru
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP08009774A priority Critical patent/EP2128300A1/fr
Priority to PCT/EP2009/055261 priority patent/WO2009144109A1/fr
Publication of EP2128300A1 publication Critical patent/EP2128300A1/fr
Withdrawn legal-status Critical Current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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/129—Flame spraying

Definitions

  • the invention relates to a method for applying a coating to a component surface by high-speed flame spraying, in which particles of a coating material are at least partially melted and released as a particle stream at high speed onto the component surface. Furthermore, a producible according to the process coating and a turbine blade with this coating are the subject of the invention.
  • Turbine blades of gas turbines for example, provided with coating systems, which are composed of two superimposed layers.
  • an MCrAlY primer is applied directly to the surface of the turbine blade, on which in turn a ceramic thermal barrier coating is arranged.
  • the primer has a high surface roughness, since only then is sufficient bonding of the primer to the thermal barrier coating ensured.
  • the primer may be applied to the turbine blade by high velocity flame spraying (HVOF).
  • HVOF high velocity flame spraying
  • MCrAlY particles are introduced with a carrier gas into a burner which burns supplied fuel and oxygen at high temperature.
  • the MCrAlY particles are at least partially melted and then released as particle flow at high speed onto the component surface.
  • the particle flow is aligned so that it impinges perpendicular to the component surface.
  • the problem arises that the resulting primer has too low a roughness.
  • the interlocking of a subsequently applied thermal barrier coating with the primer is not high enough to permanently withstand the stresses experienced by the coating system during operation. For this reason, damage can occur in the known coating systems.
  • This object is achieved in a generic method in that the particle flow is aligned to include during application of the coating with the component surface angle not equal to 90 °.
  • the basic idea of the invention is to align the particle flow so that it encloses an angle with the component surface which is not equal to 90 °.
  • the particle flow is thus inclined to the component surface and, in contrast to the method known in the prior art, impinges obliquely on the component surface.
  • the coating applied by the method according to the invention has a particularly high roughness.
  • the impingement of particle flow on the surface of the component causes the coating to have a rough surface texture.
  • the particle flow is guided over the component surface, in order to apply the coating in a planar manner.
  • the particle stream it is also possible to orient the particle stream so that it encloses a constant angle not equal to 90 ° when the coating is applied to the component surface.
  • the particle flow impinges on the component surface at a constant angle, or it is inclined at a constant angle to the component surface.
  • the particle flow can also be aligned during application of the coating so that it includes different angles not equal to 90 ° with the component surface. According to this embodiment, the orientation of the particle flow during application is varied. The particle stream then impinges on the component surface at different angles, i. the particle flow is inclined at different angles to the component surface during the application of the coating.
  • the coating can also be applied in several superimposed layers on the component surface.
  • the particle flow includes a first angle and during the application of a second layer a second angle, wherein the first and second angles differ.
  • the particle flow may also be oriented to be at one side during the application of the first layer relative to an axis perpendicular to the component surface and during the application of the second layer relative to the axis to the other side is inclined.
  • the amounts of inclination angle can be the same size or different sizes.
  • the particle flow is aligned during the application of a multilayer coating in order to enclose different angles not equal to 90 ° with the component surface during the application of a layer.
  • the orientation of the particle flow during the application of a single layer is varied.
  • an underlayer can be applied to the component surface, in particular by high-speed flame spraying, before the application of the coating.
  • the underlayer particles of the coating material which have a smaller average diameter than the particles used for the coating. In this way, a dense underlayer is efficiently obtained.
  • the lower layer can in particular be formed from MCrAlY.
  • a ceramic thermal barrier coating can be applied to the coating.
  • the thermal barrier coating may preferably be an APS coating.
  • the coating can also be applied to a turbine blade.
  • FIGS. 1 to 3 schematically a method according to the invention for the application of a coating 1 on a surface of a turbine blade 2 is shown.
  • FIG. 1 Fig. 10 shows the superposition of a sub-layer 3 on the surface of the turbine blade 2 by high velocity flame spraying.
  • coating particles of MCrAlY are fed to a burner 4 in a carrier gas.
  • a fuel and oxygen are introduced into the burner 4.
  • the fuel and the oxygen are mixed in the burner 4 and burned.
  • the coating particles are injected in the carrier gas at high speed as a particle stream 6.
  • the coating particles melt when passing through the flame 5 at least partially and then hit the surface of the turbine blade 2, where they stick.
  • the particle stream 6 is passed over the surface to form the underlayer 3.
  • the particle stream 6 is oriented so as to form an angle a of 90 ° with the surface of the turbine blade 2.
  • the obtained underlayer 3 has a relatively small surface roughness.
  • the FIG. 2 shows the application of a first layer 7 of the coating 1 on the lower layer 3.
  • the burner 4 is supplied with coating particles of MCrAlY, which have a larger average diameter than the particles used for the formation of the lower layer 3.
  • the coating particles are melted in the manner described above at least partially in the flame 5 and discharged as a particle stream 6 at high speed in the direction of the surface of the turbine blade 2. There they meet the lower layer 3 and form on this the first layer 7 of the coating 1, while the particle stream 6 is moved over the lower layer 3.
  • the particle flow 6 is aligned so that it encloses a constant angle b, not equal to 90 °, with the surface of the turbine blade 2.
  • the burner 4 is tilted to the left in the drawing.
  • the particle stream 6 emitted by the burner is then inclined relative to the surface of the turbine blade 2 and impinges obliquely thereon.
  • the first layer 7 of the coating 1 applied in this way has a high surface roughness. This is due to the fact that projecting portions 7a of the first layer 7, which are shown enlarged in the drawing for clarity, are formed wave-shaped counter to the direction of inclination of the burner 4. This surface configuration contributes significantly to the increase in surface roughness.
  • FIG. 3 finally shows the application of a second layer 8 of the coating 1. This is analogous to the application of the first layer 7.
  • the burner 4 with respect to its position in the FIG. 1 tilted to the right, so that the particle stream 6 again impinges on the surface, including an angle c not equal to 90 °.
  • the second layer 8 is formed with projecting portions 8a, which are oriented in opposite directions to the projecting portions 7a of the first layer 7.
  • the second layer 8 also has a high surface roughness.
  • a thermal barrier coating such as a ceramic APS coating. This is then clamped strongly due to the high surface roughness of the coating 1.

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)
  • Turbine Rotor Nozzle Sealing (AREA)
EP08009774A 2008-05-29 2008-05-29 Procédé destiné à l'injection de flammes à vitesse élevée Withdrawn EP2128300A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08009774A EP2128300A1 (fr) 2008-05-29 2008-05-29 Procédé destiné à l'injection de flammes à vitesse élevée
PCT/EP2009/055261 WO2009144109A1 (fr) 2008-05-29 2009-04-30 Procédé de projection à la flamme supersonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08009774A EP2128300A1 (fr) 2008-05-29 2008-05-29 Procédé destiné à l'injection de flammes à vitesse élevée

Publications (1)

Publication Number Publication Date
EP2128300A1 true EP2128300A1 (fr) 2009-12-02

Family

ID=39817070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08009774A Withdrawn EP2128300A1 (fr) 2008-05-29 2008-05-29 Procédé destiné à l'injection de flammes à vitesse élevée

Country Status (1)

Country Link
EP (1) EP2128300A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011091866A1 (fr) * 2010-01-28 2011-08-04 Siemens Aktiengesellschaft Buse de projection et procédé de projection atmosphérique, dispositif pour appliquer un revêtement et élément revêtu
EP2366730A1 (fr) 2010-03-17 2011-09-21 Innovent e.V. Procédé de modification chimique de la surface polymère d'une matière solide particulaire
EP2592174A1 (fr) * 2011-11-14 2013-05-15 Siemens Aktiengesellschaft Système de couche doté d'une surface de substrat structurée et son procédé de fabrication

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1275749A1 (fr) * 2001-07-13 2003-01-15 General Electric Company Procédé de déposition d'un revêtement de protection thermique et revêtement obtenu selon cette méthode
EP1275747A1 (fr) * 2001-07-11 2003-01-15 ALSTOM (Switzerland) Ltd Procédé et dispositif de revêtement d' un composant résistant à des températures élevées avec un revêtement de protection thermique
DE69828732T2 (de) 1997-09-23 2005-12-22 General Electric Co. Verfahren zum Auftragen einer Haftbeschichtung für eine Wärmedämmschicht
US20070092659A1 (en) * 2005-10-25 2007-04-26 Kluge Tamara J Method for creating a smooth coating transition zone
EP1816229A1 (fr) * 2006-01-31 2007-08-08 Siemens Aktiengesellschaft Dispositif et procédé de pulvériation thermique
WO2008040678A1 (fr) * 2006-10-05 2008-04-10 Turbocoating S.P.A. Procédé de fabrication de revêtements de barrière thermique, revêtements et structures ainsi obtenus, et composants revêtus avec ce procédé
WO2008049460A1 (fr) * 2006-10-24 2008-05-02 Siemens Aktiengesellschaft PROCÉDÉ POUR RÉGLER LA RUGOSITÉ de surface LORS D'UNE OPÉRATION DE REVÊTEMENT À BASSE TEMPÉRATURE, ET ÉLÉMENT DE CONSTRUCTION

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69828732T2 (de) 1997-09-23 2005-12-22 General Electric Co. Verfahren zum Auftragen einer Haftbeschichtung für eine Wärmedämmschicht
EP1275747A1 (fr) * 2001-07-11 2003-01-15 ALSTOM (Switzerland) Ltd Procédé et dispositif de revêtement d' un composant résistant à des températures élevées avec un revêtement de protection thermique
EP1275749A1 (fr) * 2001-07-13 2003-01-15 General Electric Company Procédé de déposition d'un revêtement de protection thermique et revêtement obtenu selon cette méthode
US20070092659A1 (en) * 2005-10-25 2007-04-26 Kluge Tamara J Method for creating a smooth coating transition zone
EP1816229A1 (fr) * 2006-01-31 2007-08-08 Siemens Aktiengesellschaft Dispositif et procédé de pulvériation thermique
WO2008040678A1 (fr) * 2006-10-05 2008-04-10 Turbocoating S.P.A. Procédé de fabrication de revêtements de barrière thermique, revêtements et structures ainsi obtenus, et composants revêtus avec ce procédé
WO2008049460A1 (fr) * 2006-10-24 2008-05-02 Siemens Aktiengesellschaft PROCÉDÉ POUR RÉGLER LA RUGOSITÉ de surface LORS D'UNE OPÉRATION DE REVÊTEMENT À BASSE TEMPÉRATURE, ET ÉLÉMENT DE CONSTRUCTION

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011091866A1 (fr) * 2010-01-28 2011-08-04 Siemens Aktiengesellschaft Buse de projection et procédé de projection atmosphérique, dispositif pour appliquer un revêtement et élément revêtu
EP2353725A1 (fr) * 2010-01-28 2011-08-10 Siemens Aktiengesellschaft Buse de pulvérisation et procédé de pulvérisation atmosphérique, dispositif de revêtement et élément revêtu
CN102725071A (zh) * 2010-01-28 2012-10-10 西门子公司 用于大气喷涂的喷头和方法、用于覆层的设备和被覆层的构件
RU2519415C2 (ru) * 2010-01-28 2014-06-10 Сименс Акциенгезелльшафт Распылительное сопло и способ атмосферного напыления, устройство для покрытия и покрытая деталь
EP2366730A1 (fr) 2010-03-17 2011-09-21 Innovent e.V. Procédé de modification chimique de la surface polymère d'une matière solide particulaire
EP2592174A1 (fr) * 2011-11-14 2013-05-15 Siemens Aktiengesellschaft Système de couche doté d'une surface de substrat structurée et son procédé de fabrication
WO2013072092A1 (fr) * 2011-11-14 2013-05-23 Siemens Aktiengesellschaft Système stratifié à surface de substrat structurée et procédé de fabrication
US10371004B2 (en) 2011-11-14 2019-08-06 Siemens Aktiengesellschaft Layer system with a structured substrate surface and production process

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