EP0290820B1 - Procédé de préparation d'alliages métalliques renforcés par dispersion - Google Patents

Procédé de préparation d'alliages métalliques renforcés par dispersion Download PDF

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Publication number
EP0290820B1
EP0290820B1 EP88106164A EP88106164A EP0290820B1 EP 0290820 B1 EP0290820 B1 EP 0290820B1 EP 88106164 A EP88106164 A EP 88106164A EP 88106164 A EP88106164 A EP 88106164A EP 0290820 B1 EP0290820 B1 EP 0290820B1
Authority
EP
European Patent Office
Prior art keywords
metal
solution
phase
salts
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.)
Expired - Lifetime
Application number
EP88106164A
Other languages
German (de)
English (en)
Other versions
EP0290820A3 (en
EP0290820A2 (fr
Inventor
Werner Dr. Ing. Hüther
Wolfgang Dr. Ing. Betz
Gerhard Andrees
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 GmbH
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
Priority claimed from DE19873715979 external-priority patent/DE3715979A1/de
Application filed by MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of EP0290820A2 publication Critical patent/EP0290820A2/fr
Publication of EP0290820A3 publication Critical patent/EP0290820A3/de
Application granted granted Critical
Publication of EP0290820B1 publication Critical patent/EP0290820B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1026—Alloys containing non-metals starting from a solution or a suspension of (a) compound(s) of at least one of the alloy constituents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • Y10S75/00—Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
    • Y10S75/956—Producing particles containing a dispersed phase

Definitions

  • the invention relates to a method for producing dispersion-hardened metal alloys, in particular for components of complex shape which are resistant to high temperatures, particles of a second phase being incorporated into a metallic matrix (first phase) with the aid of a colloidal suspension, the metallic components of the first phase initially being in the form of a salt solution, the solution is mixed with the particles of the second phase, which do not react with the metallic constituents of the first phase and their salt solution, a deglomerating agent is added, the solution is atomized and, after removal of the solvent, a reduction to metal takes place.
  • Metal alloys in particular superalloys for high-temperature-resistant components in a complicated form, such as turbine blades or similarly complicated moldings, often contain highly reactive elements, such as titanium, chromium, aluminum and the like.
  • highly reactive elements such as titanium, chromium, aluminum and the like.
  • mixed oxides can be formed already when removing the solvent or the water of crystallization due to the reactive elements, which can not or only very difficultly be reduced to metal.
  • the object of the invention is the method according to EP-A-0 223 196 to improve so that the target alloys can be produced almost as metal powder, although they contain highly reactive elements.
  • the invention relates to a method for producing dispersion-hardened metal alloys for high-temperature-resistant components of complicated shape, particles of a second phase being incorporated into a metallic matrix with the aid of a colloidal suspension.
  • the invention improves the method according to EP-A-0 223 196 and extends its field of application very significantly.
  • non-reactive, in particular oxidic, dispersions can be introduced into the suspension as a second phase in the form of particles.
  • Alloys can thus be processed to metal powder, which also contain the reactive elements mentioned.
  • Metal salts or mixtures of salts of metals which can be reduced from their salts are used as starting materials for the solution to form a suspension.
  • a suspension of fine powder particles of the highly reactive elements or suitable master alloys from these elements is thus produced by slurrying, optionally with deglomerating agent.
  • this mixture is atomized, dried and reduced, at most a thin surface layer of this metal powder is oxidized.
  • the remaining metallic residue can be uniformly distributed in the metallic matrix to the desired extent by diffusion treatment before or after compacting the powder. If a mixture of salt solutions of reactive metals is used, powders and sintered shaped bodies can be produced from them, which additionally contain a uniform distribution of the finest oxidic particles.
  • the particle size and distribution then depend on the sintering conditions of the shaped body. This gives optimally composed superalloys with different disperse populations to reinforce the matrix.
  • a colloidal suspension for example, a non-colloidal particle distribution in the solution can also be used as a suspension.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Claims (5)

  1. Procédé de préparation d'alliages métalliques renforcés par dispersion notamment pour des pièces constitutives résistantes à haute température de forme compliquée, dans lequel on introduit des particules d'une deuxième phase dans une matrice métallique (première phase) à l'aide d'une suspension colloïdale, les composants métalliques de la première phase étant d'abord présents sous forme de solution saline, on mélange à la solution les particules de la deuxième phase, qui ne réagit pas avec les composants métalliques de la première phase et leur solution saline, on ajoute un agent de désagglomération, on pulvérise la solution et après élimination du solvant on réalise la réduction en métal, caractérisé en ce qu'on utilise comme matériau de départ de la solution pour former une suspension des sels ou mélanges de sels réductibles en les métaux et on mélange à la solution des particules de poudre de métal en tant que deuxième phase, de métaux ou de leurs alliages dont on peut soumettre sans problème les sels à un processus de reduction.
  2. Procédé selon la revendication 1, caractérisé en ce qu'en plus des particules de poudre on ajoute à la solution des dispersants non réactifs, notamment par voie d'oxydation.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on ajoute aussi à la solution des sels de métaux réactifs qui lors du séchage et du traitement réducteur forment des oxydes métalliques.
  4. Procédé selon la revendication 3, caractérisé en ce qu'on ajoute à la solution des sels de métaux comme le titane, le chrome, l'aluminium et autres éléments réactifs analogues.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'on dispense dans la matrice métallique de façon régulière la poudre métallique, y compris des particules métalliques un peu oxydées superficiellement par un traitement thermique de diffusion avant ou après le compactage de la poudre.
EP88106164A 1987-05-13 1988-04-19 Procédé de préparation d'alliages métalliques renforcés par dispersion Expired - Lifetime EP0290820B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873715979 DE3715979A1 (de) 1985-11-13 1987-05-13 Verfahren zur herstellung dispersionsgehaerteter metallegierungen
DE3715979 1987-05-13

Publications (3)

Publication Number Publication Date
EP0290820A2 EP0290820A2 (fr) 1988-11-17
EP0290820A3 EP0290820A3 (en) 1990-03-21
EP0290820B1 true EP0290820B1 (fr) 1994-03-16

Family

ID=6327454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106164A Expired - Lifetime EP0290820B1 (fr) 1987-05-13 1988-04-19 Procédé de préparation d'alliages métalliques renforcés par dispersion

Country Status (2)

Country Link
US (1) US4894086A (fr)
EP (1) EP0290820B1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT391435B (de) * 1988-04-14 1990-10-10 Plansee Metallwerk Verfahren zur herstellung einer odssinterlegierung
US5380482A (en) * 1991-10-18 1995-01-10 Aspen Research, Inc. Method of manufacturing ingots for use in making objects having high heat, thermal shock, corrosion and wear resistance
US6338809B1 (en) * 1997-02-24 2002-01-15 Superior Micropowders Llc Aerosol method and apparatus, particulate products, and electronic devices made therefrom
US6428823B1 (en) * 2001-03-28 2002-08-06 Council Of Scientific & Industrial Research Biologically active aqueous fraction of an extract obtained from a mangrove plant Salvadora persica L
US6737017B2 (en) * 2002-06-14 2004-05-18 General Electric Company Method for preparing metallic alloy articles without melting
US7419528B2 (en) * 2003-02-19 2008-09-02 General Electric Company Method for fabricating a superalloy article without any melting
US7329381B2 (en) * 2002-06-14 2008-02-12 General Electric Company Method for fabricating a metallic article without any melting
US7416697B2 (en) * 2002-06-14 2008-08-26 General Electric Company Method for preparing a metallic article having an other additive constituent, without any melting
US7410610B2 (en) * 2002-06-14 2008-08-12 General Electric Company Method for producing a titanium metallic composition having titanium boride particles dispersed therein
US6926754B2 (en) * 2003-06-12 2005-08-09 General Electric Company Method for preparing metallic superalloy articles having thermophysically melt incompatible alloying elements, without melting
US7531021B2 (en) * 2004-11-12 2009-05-12 General Electric Company Article having a dispersion of ultrafine titanium boride particles in a titanium-base matrix
US7833472B2 (en) 2005-06-01 2010-11-16 General Electric Company Article prepared by depositing an alloying element on powder particles, and making the article from the particles
US20070141374A1 (en) * 2005-12-19 2007-06-21 General Electric Company Environmentally resistant disk
DE102007054233B4 (de) 2007-11-12 2010-06-10 Ika-Werke Gmbh & Co. Kg Vorrichtung zum Dispergieren oder Homogenisieren

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB737398A (en) * 1952-10-24 1955-09-28 Gen Electric Co Ltd Improvements in or relating to the manufacture of alloys
GB917005A (en) * 1960-09-01 1963-01-30 Gen Electric Co Ltd Improvements in or relating to the manufacture of sintered metallic bodies
US3192042A (en) * 1961-08-01 1965-06-29 Gen Electric Method of forming a cermet
US3310400A (en) * 1962-01-31 1967-03-21 Du Pont Process of making metal powder compositions wherein some metal grains contain dispersed refractory metal oxide particles
US3415640A (en) * 1966-10-28 1968-12-10 Fansteel Metallurgical Corp Process for making dispersions of particulate oxides in metals
CH462473A (fr) * 1967-08-18 1968-09-15 Suisse De Rech S Horlogeres La Procédé de préparation d'un produit solide
FR1571322A (fr) * 1967-12-18 1969-06-20
GB1453026A (en) * 1972-08-16 1976-10-20 Crysus Lancashire Ltd Crystallising of solutions of salts
US4072501A (en) * 1977-04-13 1978-02-07 The United States Of America As Represented By The United States Department Of Energy Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures
US4615736A (en) * 1985-05-01 1986-10-07 Allied Corporation Preparation of metal powders
DE3540255A1 (de) * 1985-11-13 1987-07-23 Mtu Muenchen Gmbh Verfahren zur herstellung einer dispersionsgehaerteten metall-legierung
US4731110A (en) * 1987-03-16 1988-03-15 Gte Products Corp. Hydrometallurigcal process for producing finely divided spherical precious metal based powders

Also Published As

Publication number Publication date
EP0290820A3 (en) 1990-03-21
EP0290820A2 (fr) 1988-11-17
US4894086A (en) 1990-01-16

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