EP3636793A1 - Eb-pvd-ähnliche plasmagespritzte beschichtungen - Google Patents

Eb-pvd-ähnliche plasmagespritzte beschichtungen Download PDF

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Publication number
EP3636793A1
EP3636793A1 EP18199594.5A EP18199594A EP3636793A1 EP 3636793 A1 EP3636793 A1 EP 3636793A1 EP 18199594 A EP18199594 A EP 18199594A EP 3636793 A1 EP3636793 A1 EP 3636793A1
Authority
EP
European Patent Office
Prior art keywords
substrate
pvd
coatings
lpps
plasma
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Withdrawn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
EP18199594.5A
Other languages
English (en)
French (fr)
Inventor
Christoffer Dama
Dimitrios Zois
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 EP18199594.5A priority Critical patent/EP3636793A1/de
Publication of EP3636793A1 publication Critical patent/EP3636793A1/de
Withdrawn legal-status Critical Current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
    • 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
    • C23C4/134—Plasma spraying
    • 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
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides

Definitions

  • the invention relates to a plasma-sprayed ceramic coating with a columnar structure similar to EB-PVD coatings.
  • TBCs Thermal Barrier Coatings
  • APS Atmospheric Plasma Spray
  • TBC's are sprayed with conventional thermal spray technology such as Atmospheric Plasma Spray (APS) and they consist of droplets that deposit on each other to create successive layers that end up building the coating.
  • the morphology of the powder particles as well as the stacking of the droplets and semi-molten particles during spraying influences the overall porosity of the TBC.
  • High porosity homogeneous coatings are desired in order to achieve increased capacity for thermal strain tolerance as well as lower thermal conductivity. However, over a certain porosity level, the coatings cohesion will start degrading severely, reducing adversely its erosion resistance.
  • Coatings of high porosity demonstrate increased thermal strain tolerance compared to denser coatings of lower porosity. However, they cannot achieve the exceptional thermal strain tolerance of the Electron Beam Physical Vapor Deposition (EB-PVD) coatings, which present a columnar feathery microstructure. The orientation of the grain structure allows increased tolerances to thermal shocks and thermomechanical stress.
  • EB-PVD Electron Beam Physical Vapor Deposition
  • the innovative aspect of the present invention is to use a conventional vacuum thermal spray equipment to produce EB-PVD-like coatings.
  • the important element to imitate the feathery EB-PVD microstructure is not just to melt, but to evaporate the ceramic powder and then let it deposit and resolidify on the substrate. That can be achieved through the combination of a high power plasma torch and a low pressure chamber, used for Low Pressure Plasma Spraying (LPPS).
  • LPPS Low Pressure Plasma Spraying
  • that can be compensated with the usage of a high power torch that delivers an elongated flame, that can extent to more than 1 meter, under the low pressure environment at the LPPS booth.
  • the particle size distribution of ceramic coating should be fine, such as -45 ⁇ m or finer, in order to achieve fast and complete evaporation during the flight time of the particles in the flame.
  • the apparatus has a vertical direction, in which the torch is placed vertically above the substrate and sprays downwards, to ensure that the evaporated material lands on the substrate.
  • the roughness of the bond coat should be low, ideally under R a :4 ⁇ m in order to allow a homogeneous growth of the vertical columns. That comes in contrast to the high bond coat roughness needed for the typical thermal sprayed TBC's in order to achieve a good mechanical interlocking.

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)
EP18199594.5A 2018-10-10 2018-10-10 Eb-pvd-ähnliche plasmagespritzte beschichtungen Withdrawn EP3636793A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18199594.5A EP3636793A1 (de) 2018-10-10 2018-10-10 Eb-pvd-ähnliche plasmagespritzte beschichtungen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18199594.5A EP3636793A1 (de) 2018-10-10 2018-10-10 Eb-pvd-ähnliche plasmagespritzte beschichtungen

Publications (1)

Publication Number Publication Date
EP3636793A1 true EP3636793A1 (de) 2020-04-15

Family

ID=63832323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18199594.5A Withdrawn EP3636793A1 (de) 2018-10-10 2018-10-10 Eb-pvd-ähnliche plasmagespritzte beschichtungen

Country Status (1)

Country Link
EP (1) EP3636793A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050129965A1 (en) * 2002-04-12 2005-06-16 Gerard Barbezat Plasma injection method
US20070259173A1 (en) * 2006-05-05 2007-11-08 Sulzer Metco Ag Method for the manufacture of a coating
US20090136781A1 (en) * 2007-08-16 2009-05-28 Damani Rajiv J Method For The Generation Of A Functional Layer
US20120231211A1 (en) * 2010-12-21 2012-09-13 Von Niessen Konstantin Method for the manufacture of a thermal barrier coating structure
US20120308733A1 (en) * 2010-10-11 2012-12-06 Von Niessen Konstantin Method of manufacturing a thermal barrier coating structure
US20130224432A1 (en) * 2012-02-23 2013-08-29 Sulzer Metco Ag Method Of Applying A Thermal Barrier Coating
WO2018146156A1 (en) * 2017-02-07 2018-08-16 Oerlikon Metco Ag, Wohlen Abradable coating

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050129965A1 (en) * 2002-04-12 2005-06-16 Gerard Barbezat Plasma injection method
US20070259173A1 (en) * 2006-05-05 2007-11-08 Sulzer Metco Ag Method for the manufacture of a coating
US20090136781A1 (en) * 2007-08-16 2009-05-28 Damani Rajiv J Method For The Generation Of A Functional Layer
US20120308733A1 (en) * 2010-10-11 2012-12-06 Von Niessen Konstantin Method of manufacturing a thermal barrier coating structure
US20120231211A1 (en) * 2010-12-21 2012-09-13 Von Niessen Konstantin Method for the manufacture of a thermal barrier coating structure
US20130224432A1 (en) * 2012-02-23 2013-08-29 Sulzer Metco Ag Method Of Applying A Thermal Barrier Coating
WO2018146156A1 (en) * 2017-02-07 2018-08-16 Oerlikon Metco Ag, Wohlen Abradable coating

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