EP0067746A1 - Abschabbare Dichtschicht und Herstellungsmethode für dieselbe - Google Patents

Abschabbare Dichtschicht und Herstellungsmethode für dieselbe Download PDF

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Publication number
EP0067746A1
EP0067746A1 EP82400966A EP82400966A EP0067746A1 EP 0067746 A1 EP0067746 A1 EP 0067746A1 EP 82400966 A EP82400966 A EP 82400966A EP 82400966 A EP82400966 A EP 82400966A EP 0067746 A1 EP0067746 A1 EP 0067746A1
Authority
EP
European Patent Office
Prior art keywords
worn
microbeads
abrasion
binder
joint capable
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
EP82400966A
Other languages
English (en)
French (fr)
Other versions
EP0067746B1 (de
Inventor
Claude Marcel Mons
Michel Jean-Pierre Pernot
Roland Roger Spinat
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.)
Safran Aircraft Engines SAS
Original Assignee
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
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 Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of EP0067746A1 publication Critical patent/EP0067746A1/de
Application granted granted Critical
Publication of EP0067746B1 publication Critical patent/EP0067746B1/de
Expired 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
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
    • F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/922—Bonding or joining for manufacture of seal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/935—Seal made of a particular material
    • Y10S277/939—Containing metal
    • Y10S277/941—Aluminum or copper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/1266—O, S, or organic compound in metal component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/252—Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
    • Y10T428/2996—Glass particles or spheres

Definitions

  • the invention relates to a seal capable of being worn by abrasion to be placed in contact with a rotary machine rotor zone in order to obtain a relative seal.
  • seals are placed around the movable blades of rotor stages of axial turbomachines in order to eliminate air or gas leaks which can affect the efficiency of these stages.
  • the seal of the invention is of the type constituted by a dispersion of hollow microbeads in a binder ensuring the cohesion of the microbeads between them and their connection with a metal support (which is for example a machine ring).
  • the invention also relates to the process for producing this seal and the powder mixture used for the implementation of this process.
  • French patent 1,565,344 describes a seal capable of being worn by abrasion of the aforementioned type in which the hollow microbeads are made of an aluminum alloy with at least one metal from the group of iron, nickel and cobalt while the binder is advantageously a solder containing at least one metal from the group consisting of copper, nickel and silver.
  • the joint is for example made by depositing a mixture of microbeads and an alloy powder of the binder on the support (which may include a honeycomb frame of which the cells are filled with the mixture) and by heating the assembly to a suitable temperature.
  • the invention is based on the observation that we now have on the market of hollow microbeads made of refractory materials capable of undergoing without significant deformation or fragmentation the mechanical stresses generated by a torch projection (plasma torch or oxy-acetylene pistol) .
  • the seal capable of being worn by abrasion of the invention constituted as already indicated by a dispersion of hollow microbeads in a metallic binder secured to a metallic support, is essentially characterized in that the hollow microbeads are made of an inorganic refractory material whose melting start temperature is significantly higher than the melting start temperatures of the support material and of the binder material.
  • metallic binder is understood here to mean a binder of a metal alloy or of an intermetallic compound.
  • the binder material may include the same basic components as the alloy constituting the support.
  • hollow microbeads is understood to mean hollow spherules whose diameter does not exceed 200 microns.
  • FIG. 1 in fact represents an installation for spraying powder by plasma of the known type. Only the essential elements are represented. Tailed arrows show the direction of circulation of the powder to be sprayed and unstained arrows show the direction of circulation of the gas or gases. FIG. 1 does not show, for example, the automatic control members, the vibrators, etc. which can be fitted to such an apparatus.
  • the support 31 of the joint to be formed is fixed to a holding part 28 which symbolizes the fixing and drive elements, such as plates, rollers, etc. which make it possible to print on the support 31, in cooperation with means control associated with torch 20 and not .represented, all the relative movements of translation or rotation required by the execution of the joint.
  • Figure 1 can be very easily automated.
  • the plasma torch 20 can be replaced by any other means of hot spraying such as an oxy-acetylene gun.
  • Figure 2 illustrates the structure of the joint obtained.
  • the matrix 33 constituted by the binder intimately adheres to the metal support. 31 and fixes the hollow microbeads 32. The dimensions of these have been greatly exaggerated in relation to the thickness of the joint itself greatly enlarged.
  • hollow microbeads the main thing is that they can withstand the mechanical and thermal stresses caused by spraying and that they are chemically inert with respect to the binder and the gas used for spraying.
  • the material which constitutes them can be a refractory ceramic such as alumina, an aluminum silicate, a residue of coke, etc ... They must however be sufficiently fragile to be fragmented by the action of the rotating parts in contact with the seal without damaging said parts and without escaping from the matrix.
  • Their diameter can vary from 10 to 200 microns. It can be larger the thicker the joint.
  • the proportions of the mixture used in the spraying equipment it may be indicated that the best results are generally obtained when the proportion by volume of the microbeads in this mixture is from 50 to 90%.
  • the phenomena involved in the spraying operation are extremely complex and the operating parameters (support temperature, temperature and spraying rate) can only be adjusted experimentally. These parameters depend in fact not only on the dimensions of the hollow microbeads, on their melting temperature and on the melting temperature of the binder, but also on the calorific characteristics of these constituents, such as their heat capacities, their coefficient of thermal conductivity and diffusivity, or their chemical reactivity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)
  • Coating By Spraying Or Casting (AREA)
EP82400966A 1981-06-12 1982-05-26 Abschabbare Dichtschicht und Herstellungsmethode für dieselbe Expired EP0067746B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8111564 1981-06-12
FR8111564A FR2507729B1 (fr) 1981-06-12 1981-06-12 Joint susceptible d'etre use par abrasion et son procede de realisation

Publications (2)

Publication Number Publication Date
EP0067746A1 true EP0067746A1 (de) 1982-12-22
EP0067746B1 EP0067746B1 (de) 1987-08-05

Family

ID=9259429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400966A Expired EP0067746B1 (de) 1981-06-12 1982-05-26 Abschabbare Dichtschicht und Herstellungsmethode für dieselbe

Country Status (4)

Country Link
US (1) US4423097A (de)
EP (1) EP0067746B1 (de)
DE (1) DE3276911D1 (de)
FR (1) FR2507729B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086938A2 (de) * 1982-02-16 1983-08-31 The Perkin-Elmer Corporation Keramische Hohlkugelteilchen für verschleissbare Überzüge
EP0166940A2 (de) * 1984-07-05 1986-01-08 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Einlaufbelag einer Strömungsmaschine
EP0485194A1 (de) * 1990-11-06 1992-05-13 Star Refrigeration Ltd. Verbesserte Wärmeübertragungsfläche
EP0935009A1 (de) * 1998-02-05 1999-08-11 Sulzer Innotec Ag Beschichteter Gusskörper
EP2449146A1 (de) * 2009-07-02 2012-05-09 Snecma Wärmeschützende beschichtung für ein turbinenmotorteil und herstellungsverfahren dafür
RU2699340C2 (ru) * 2017-12-18 2019-09-04 Акционерное общество "Завод "Композит" (АО "Завод "Композит") Спеченный уплотнительный материал для газотурбинных двигателей

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568389A (en) * 1981-03-18 1986-02-04 Torobin Leonard B Shaped form or formed mass of hollow metal microspheres
US4582534A (en) * 1981-03-18 1986-04-15 Torobin Leonard B Metal microspheres, filamented hollow metal microspheres and articles produced therefrom
US4548863A (en) * 1984-11-29 1985-10-22 Hicks Irwin A Frangible seal coating and its method of production
CA1322876C (en) * 1986-01-22 1993-10-12 Tadao Inabata Light metallic composite material and method of producing thereof
JPH02102972A (ja) * 1988-10-07 1990-04-16 Honda Motor Co Ltd 摺動部材の組合せ
US4925740A (en) * 1989-07-28 1990-05-15 Rohr Industries, Inc. Hollow metal sphere filled stabilized skin structures and method of making
US5228494A (en) * 1992-05-01 1993-07-20 Rohatgi Pradeep K Synthesis of metal matrix composites containing flyash, graphite, glass, ceramics or other metals
US5472315A (en) * 1993-11-09 1995-12-05 Sundstrand Corporation Abradable coating in a gas turbine engine
GB9513252D0 (en) * 1995-06-29 1995-09-06 Rolls Royce Plc An abradable composition
US6013592A (en) * 1998-03-27 2000-01-11 Siemens Westinghouse Power Corporation High temperature insulation for ceramic matrix composites
US6733907B2 (en) 1998-03-27 2004-05-11 Siemens Westinghouse Power Corporation Hybrid ceramic material composed of insulating and structural ceramic layers
US6641907B1 (en) * 1999-12-20 2003-11-04 Siemens Westinghouse Power Corporation High temperature erosion resistant coating and material containing compacted hollow geometric shapes
US7563504B2 (en) * 1998-03-27 2009-07-21 Siemens Energy, Inc. Utilization of discontinuous fibers for improving properties of high temperature insulation of ceramic matrix composites
US7067181B2 (en) * 2003-08-05 2006-06-27 Siemens Power Generation, Inc. Insulating ceramic based on partially filled shapes
US6977060B1 (en) * 2000-03-28 2005-12-20 Siemens Westinghouse Power Corporation Method for making a high temperature erosion resistant coating and material containing compacted hollow geometric shapes
US7037865B1 (en) 2000-08-08 2006-05-02 Moldite, Inc. Composite materials
JP2002344191A (ja) * 2001-05-11 2002-11-29 Yazaki Corp 電磁遮蔽板材及び電磁遮蔽構造物
US6884384B2 (en) 2001-09-27 2005-04-26 Siemens Westinghouse Power Corporation Method for making a high temperature erosion resistant material containing compacted hollow geometric shapes
FR2840839B1 (fr) * 2002-06-14 2005-01-14 Snecma Moteurs Materiau metallique susceptible d'etre use par abrasion; pieces, carter; procede d'elaboration dudit materiau
US6916529B2 (en) * 2003-01-09 2005-07-12 General Electric Company High temperature, oxidation-resistant abradable coatings containing microballoons and method for applying same
US20050129868A1 (en) * 2003-12-11 2005-06-16 Siemens Westinghouse Power Corporation Repair of zirconia-based thermal barrier coatings
US20080274336A1 (en) * 2006-12-01 2008-11-06 Siemens Power Generation, Inc. High temperature insulation with enhanced abradability
US20080206542A1 (en) * 2007-02-22 2008-08-28 Siemens Power Generation, Inc. Ceramic matrix composite abradable via reduction of surface area
US9297269B2 (en) * 2007-05-07 2016-03-29 Siemens Energy, Inc. Patterned reduction of surface area for abradability
US8110132B2 (en) 2008-02-13 2012-02-07 James Hardie Technology Limited Process and machine for manufacturing lap siding and the product made thereby
DE102009016803A1 (de) * 2009-04-09 2010-10-14 Rolls-Royce Deutschland Ltd & Co Kg Labyrinth-Anstreifdichtung für eine Strömungsmaschine
EP2951241A4 (de) * 2013-01-29 2016-08-24 United Technologies Corp Klingenabriebmaterial
EP2871330A1 (de) * 2013-11-07 2015-05-13 Siemens Aktiengesellschaft Strömungsmaschine mit einer Beschichtung, Verwendung eines Kunststoffes zur Beschichtung und Verfahren zum Beschichten einer Strömungsmaschine
US10539036B2 (en) 2014-01-14 2020-01-21 United Technologies Corporation Abradable seal having nanolayer material
US10036402B2 (en) * 2014-05-14 2018-07-31 United Technologies Corporation Max phase reinforced polymer matrix composite abradables with enhanced thermal conductivity
US10030532B2 (en) * 2015-04-22 2018-07-24 United Technologies Corporation Abradable seal with thermally conductive microspheres
US20180179623A1 (en) * 2016-12-22 2018-06-28 GM Global Technology Operations LLC Thermal spray deposition of hollow microspheres
US10851711B2 (en) 2017-12-22 2020-12-01 GM Global Technology Operations LLC Thermal barrier coating with temperature-following layer
US11149853B2 (en) * 2018-05-15 2021-10-19 Dell Products L.P. Airflow sealing by flexible rubber with I-beam and honeycomb structure
US11293351B2 (en) * 2020-07-16 2022-04-05 Raytheon Technologies Corporation Gas turbine engine including seal assembly with abradable coating including magnetic particles embedded in polymer
US11313281B2 (en) * 2020-07-16 2022-04-26 Raytheon Technologies Corporation Gas turbine engine including seal assembly with abradable coating including magnetic particles
US11313280B2 (en) * 2020-07-16 2022-04-26 Raytheon Technologies Corporation Gas turbine engine including seal assembly with abradable coating and cutter

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1251500A (fr) * 1960-02-03 1961-01-20 Gen Electric Perfectionnements apportés aux matériaux et joints d'étanchéité hétérogènes de densité contrôlée pouvant être rodés, et aux procédés pour la production detels matériaux
US3084064A (en) * 1959-08-06 1963-04-02 Union Carbide Corp Abradable metal coatings and process therefor
FR1565344A (de) * 1967-01-03 1969-05-02
US3547455A (en) * 1969-05-02 1970-12-15 Gen Electric Rotary seal including organic abradable material
FR2048433A5 (de) * 1969-07-01 1971-03-19 Metco Inc
US3575427A (en) * 1969-11-03 1971-04-20 United Aircraft Corp Composite abradable seal
FR2256125A1 (de) * 1973-12-26 1975-07-25 Union Carbide Corp
US4177308A (en) * 1978-08-10 1979-12-04 The United States Of America As Represented By The Secretary Of The Air Force Non-combustible high temperature abradable seal material
GB2056502A (en) * 1979-08-21 1981-03-18 Rolls Royce Metal coated glass particles for flame spraying
GB2072222A (en) * 1980-03-22 1981-09-30 Rolls Royce Coating compositions containing metal and glass

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
US4248940A (en) * 1977-06-30 1981-02-03 United Technologies Corporation Thermal barrier coating for nickel and cobalt base super alloys

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3084064A (en) * 1959-08-06 1963-04-02 Union Carbide Corp Abradable metal coatings and process therefor
FR1251500A (fr) * 1960-02-03 1961-01-20 Gen Electric Perfectionnements apportés aux matériaux et joints d'étanchéité hétérogènes de densité contrôlée pouvant être rodés, et aux procédés pour la production detels matériaux
FR1565344A (de) * 1967-01-03 1969-05-02
US3547455A (en) * 1969-05-02 1970-12-15 Gen Electric Rotary seal including organic abradable material
FR2048433A5 (de) * 1969-07-01 1971-03-19 Metco Inc
US3575427A (en) * 1969-11-03 1971-04-20 United Aircraft Corp Composite abradable seal
FR2256125A1 (de) * 1973-12-26 1975-07-25 Union Carbide Corp
US4177308A (en) * 1978-08-10 1979-12-04 The United States Of America As Represented By The Secretary Of The Air Force Non-combustible high temperature abradable seal material
GB2056502A (en) * 1979-08-21 1981-03-18 Rolls Royce Metal coated glass particles for flame spraying
GB2072222A (en) * 1980-03-22 1981-09-30 Rolls Royce Coating compositions containing metal and glass

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086938A2 (de) * 1982-02-16 1983-08-31 The Perkin-Elmer Corporation Keramische Hohlkugelteilchen für verschleissbare Überzüge
EP0086938A3 (en) * 1982-02-16 1984-04-25 Metco Inc. Hollow sphere ceramic particles for abradable coatings
EP0166940A2 (de) * 1984-07-05 1986-01-08 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Einlaufbelag einer Strömungsmaschine
EP0166940A3 (en) * 1984-07-05 1986-05-21 Mtu Muenchen Gmbh Running-in coating for a turbomachine
EP0485194A1 (de) * 1990-11-06 1992-05-13 Star Refrigeration Ltd. Verbesserte Wärmeübertragungsfläche
EP0935009A1 (de) * 1998-02-05 1999-08-11 Sulzer Innotec Ag Beschichteter Gusskörper
US6251526B1 (en) 1998-02-05 2001-06-26 Sulzer Innotec Ag Coated cast part
EP2449146A1 (de) * 2009-07-02 2012-05-09 Snecma Wärmeschützende beschichtung für ein turbinenmotorteil und herstellungsverfahren dafür
RU2699340C2 (ru) * 2017-12-18 2019-09-04 Акционерное общество "Завод "Композит" (АО "Завод "Композит") Спеченный уплотнительный материал для газотурбинных двигателей

Also Published As

Publication number Publication date
DE3276911D1 (en) 1987-09-10
EP0067746B1 (de) 1987-08-05
US4423097A (en) 1983-12-27
FR2507729B1 (fr) 1986-08-22
FR2507729A1 (fr) 1982-12-17

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19820611

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