EP0257319A1 - Procédé pour la réalisation de revêtements protecteurs - Google Patents

Procédé pour la réalisation de revêtements protecteurs Download PDF

Info

Publication number
EP0257319A1
EP0257319A1 EP87110805A EP87110805A EP0257319A1 EP 0257319 A1 EP0257319 A1 EP 0257319A1 EP 87110805 A EP87110805 A EP 87110805A EP 87110805 A EP87110805 A EP 87110805A EP 0257319 A1 EP0257319 A1 EP 0257319A1
Authority
EP
European Patent Office
Prior art keywords
suspension
component
temperature
freeze
solvent
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
EP87110805A
Other languages
German (de)
English (en)
Other versions
EP0257319B1 (fr
Inventor
Werner Dr. Hüther
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.)
MTU Aero Engines AG
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
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 MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP0257319A1 publication Critical patent/EP0257319A1/fr
Application granted granted Critical
Publication of EP0257319B1 publication Critical patent/EP0257319B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23C24/00—Coating starting from inorganic powder

Definitions

  • the invention relates to a method for producing protective layers against thermal and / or chemical and / or mechanical stresses on components, in particular on complexly shaped components, such as turbine blades.
  • Known protective layers or layered composites make use of the fact that it is possible with today's process technology to produce different properties in the surface of a component than those of the base material.
  • Examples of such layers or composite materials with layers of this type are thermal insulation layers (pitting corrosion), wear protection layers (including tribological layers), rub-on and run-in coverings.
  • the layers mentioned are predominantly applied by thermal spray processes.
  • the object of the invention is to provide components or layered composite bodies with a protected surface, on parts already subjected to a shaping, in particular parts of complex shape, and to be able to cover them in a uniform layer thickness without great effort.
  • the solution of the invention consists in a method for the deposition of layers in a physical way.
  • a starting powder in a suspension is applied to a cooled component by immersion in the bath in the suspension and the component provided with the dip coating is subjected to freeze-drying.
  • any desired layer thickness can be produced uniformly with the invention, and individual steps of the method can be repeated as often as desired, e.g. the production of the diving cover.
  • a heat treatment and other treatments of the coated component can be carried out after the production of the coating, such as e.g. sealing sintering or sealing on the surface.
  • a sintering or pressing program can also be combined for special requirements (hot isostatic pressing).
  • Energy beam treatments of the surface, doping, infiltration of substances other than layer material and in a form other than powder can also be used within the scope of the present invention.
  • a binder in particular an organic binder, can be dissolved in the suspension liquid, which brings about an increased green strength of the powder layer, in particular if a powder is used as the layer material, the mean grain size of which is above 25 ⁇ m. The organic binder is removed again at the beginning of the sintering process or in a separate heat treatment.
  • the applications of the invention are not limited to the given exemplary embodiments, but generally in the case of layered materials or layered composite materials, the surfaces of which have a different property from the base material, ie the base of the component should.
  • the invention is preferably used for protective layers, and here in particular for those which are subject to combined requirements.
  • the main area of application is general mechanical engineering, components for vehicles of all kinds, but also stationary systems such as manufacturing systems, especially apparatus engineering.
  • the base body of the composite body to be counted as the end product of the invention can be selected from almost any materials, such as metallic materials, metal compounds, intermetallic phases, ceramics, metal ceramics, metal glass, glass ceramics and / or combinations of the above materials with plastics.
  • the devices which are necessary for carrying out the method according to the invention are of a simple and customary type, in particular as regards the containers required for the immersion method or the coolants for the component, such as refrigerators.
  • the freeze dryers commonly used in food technology can be used for freeze drying, and the annealing and sintering ovens or presses or other post-treatment devices are also known per se.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Powder Metallurgy (AREA)
EP87110805A 1986-08-21 1987-07-25 Procédé pour la réalisation de revêtements protecteurs Expired - Lifetime EP0257319B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3628363 1986-08-21
DE19863628363 DE3628363A1 (de) 1986-08-21 1986-08-21 Verfahren zum herstellen von schutzschichten

Publications (2)

Publication Number Publication Date
EP0257319A1 true EP0257319A1 (fr) 1988-03-02
EP0257319B1 EP0257319B1 (fr) 1990-06-27

Family

ID=6307854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110805A Expired - Lifetime EP0257319B1 (fr) 1986-08-21 1987-07-25 Procédé pour la réalisation de revêtements protecteurs

Country Status (4)

Country Link
US (1) US4902536A (fr)
EP (1) EP0257319B1 (fr)
JP (1) JPS6353278A (fr)
DE (2) DE3628363A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821819A1 (de) * 1988-06-29 1990-02-08 Nokia Unterhaltungselektronik Verfahren zum herstellen einer duennen schicht
ES2009355A6 (es) * 1988-10-17 1989-09-16 Sintermetal Sa Procedimiento para preparar recubrimientos aplicables por tecnicas pulvimetalurgicas en piezas mecanicas.
JPH0765232B2 (ja) * 1989-10-12 1995-07-12 三菱レイヨン株式会社 非晶質合金の製法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1126103A (fr) * 1954-06-17 1956-11-15 Birmingham Small Arms Co Ltd Objet en acier ou en alliage résistant à la chaleur
FR1428311A (fr) * 1964-03-06 1966-02-11 Siemens Planiawerke Ag Procédé de fabrication de gaine, ainsi que les gaines obtenues par le présent procédé ou procédé similaire
FR1502325A (fr) * 1965-11-26 1967-11-18 Procédé et dispositif pour améliorer l'état de surface des pièces métalliques
US3475161A (en) * 1967-03-14 1969-10-28 Howmet Corp Method of forming cemented carbide coatings on metal surfaces by employing volatile,organic liquid solvents and organic binders
FR2179251A1 (fr) * 1972-04-07 1973-11-16 Rca Corp
DE2718758A1 (de) * 1977-04-27 1978-11-02 Siemens Ag Verfahren zum metallisieren von roehren aus keramik und vorrichtutung zur durchfuehrung dieses verfahrens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1271281A (en) * 1968-07-31 1972-04-19 Ethyl Corp Coating of webs by freeze-drying and products therefrom
US4328285A (en) * 1980-07-21 1982-05-04 General Electric Company Method of coating a superalloy substrate, coating compositions, and composites obtained therefrom

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1126103A (fr) * 1954-06-17 1956-11-15 Birmingham Small Arms Co Ltd Objet en acier ou en alliage résistant à la chaleur
FR1428311A (fr) * 1964-03-06 1966-02-11 Siemens Planiawerke Ag Procédé de fabrication de gaine, ainsi que les gaines obtenues par le présent procédé ou procédé similaire
FR1502325A (fr) * 1965-11-26 1967-11-18 Procédé et dispositif pour améliorer l'état de surface des pièces métalliques
US3475161A (en) * 1967-03-14 1969-10-28 Howmet Corp Method of forming cemented carbide coatings on metal surfaces by employing volatile,organic liquid solvents and organic binders
FR2179251A1 (fr) * 1972-04-07 1973-11-16 Rca Corp
DE2718758A1 (de) * 1977-04-27 1978-11-02 Siemens Ag Verfahren zum metallisieren von roehren aus keramik und vorrichtutung zur durchfuehrung dieses verfahrens

Also Published As

Publication number Publication date
DE3763430D1 (de) 1990-08-02
JPS6353278A (ja) 1988-03-07
US4902536A (en) 1990-02-20
DE3628363A1 (de) 1988-02-25
EP0257319B1 (fr) 1990-06-27

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