AR050161A1 - Metodo para consolidar polvos duros con recubrimiento resistente y articulo consolidado usando este metodo - Google Patents

Metodo para consolidar polvos duros con recubrimiento resistente y articulo consolidado usando este metodo

Info

Publication number
AR050161A1
AR050161A1 ARP050102408A ARP050102408A AR050161A1 AR 050161 A1 AR050161 A1 AR 050161A1 AR P050102408 A ARP050102408 A AR P050102408A AR P050102408 A ARP050102408 A AR P050102408A AR 050161 A1 AR050161 A1 AR 050161A1
Authority
AR
Argentina
Prior art keywords
metal
particles
metalloids
outer layer
article
Prior art date
Application number
ARP050102408A
Other languages
English (en)
Original Assignee
Allomet Corp
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 Allomet Corp filed Critical Allomet Corp
Publication of AR050161A1 publication Critical patent/AR050161A1/es

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62802—Powder coating materials
    • C04B35/62828—Non-oxide ceramics
    • C04B35/62831—Carbides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62802—Powder coating materials
    • C04B35/62842—Metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3839—Refractory metal carbides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
    • C04B2235/3886—Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

Un método para consolidar materiales en partículas en artículos que tienen combinaciones de propiedades no disponible por procesos convencionales mediante sinterizacion en fase líquida. Estos materiales en partículas se componen de partículas nucleares individualmente recubiertas con capas de un compuesto metálico que tiene una resistencia a las fracturas relativamente más alta que el nucleo, tales como WC o TaC. Estas partículas recubiertas incluyen una capa externa formada por un metal, tal como Co o Ni. Las partículas con estos recubrimientos se prensan para formar un artículo y el artículo s densifica a presiones y temperaturas a las cuales se logra densidad completa sin la degradacion del material que forma la partícula del nucleo. Reivindicacion 1: Un método para formar un artículo, comprendiendo dicho método: proveer una pluralidad de partículas nucleares formadas por un material central en partículas, o una pluralidad de materiales centrales en partículas diferentes, seleccionándose dicho material central en partículas del grupo formado por: nitruros metálicos y metaloides, carburos metálicos y metaloides, carbonoitruros metálicos y metaloides, boruros metálicos y metaloides, oxidos metálicos y metaloides, sulfuros metálicos y metaloides, siliciuros metálicos y metaloides, y diamante; proveer una capa intermedia sobre la mayoría de dichas partículas nucleares, dicha capa intermedia que comprende un segundo compuesto, diferente en su composicion de dicho material central en partículas y que tiene una resistencia más alta relativa a las fracturas, siendo dicho segundo compuesto capaz de unirse con dicho material central en partículas y siendo capaz de unirse con un metal seleccionado del grupo formado por: hierro, cobalto, níquel, cobre, titanio, aluminio, magnesio, litio, berilio, plata, oro, platino y sus mezclas, formando de este modo partículas recubiertas; aplicar una capa externa a dichas partículas recubiertas, comprendiendo dicha capa externa un metal seleccionado del grupo formado por: hierro, cobalto, níquel, y sus mezclas para formar una capa externa sustancialmente continua en dicha capa intermedia, formando de este modo partículas componentes; dar forma a una pluralidad de dichas partículas componentes para obtener un artículo; sinterizar dicho artículo a una temperatura suficiente para licuar por lo menos una porcion de dicha capa exterior, y durante un tiempo suficiente para disolver una porcion de dicha capa intermedia en el líquido formado a partir de dicha capa externa para proveer una cantidad efectiva de líquido para lograr una densidad sustancialmente completa sin presion externa significativa de consolidacion; y solidificar los líquidos formados a partir de dicha capa externa y dicha capa intermedia antes de la interaccion perjudicial significativa de dichos líquidos con dichas partículas nucleares.
ARP050102408A 2004-06-10 2005-06-13 Metodo para consolidar polvos duros con recubrimiento resistente y articulo consolidado usando este metodo AR050161A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/864,502 US7736582B2 (en) 2004-06-10 2004-06-10 Method for consolidating tough coated hard powders

Publications (1)

Publication Number Publication Date
AR050161A1 true AR050161A1 (es) 2006-10-04

Family

ID=35459710

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP050102408A AR050161A1 (es) 2004-06-10 2005-06-13 Metodo para consolidar polvos duros con recubrimiento resistente y articulo consolidado usando este metodo

Country Status (3)

Country Link
US (1) US7736582B2 (es)
AR (1) AR050161A1 (es)
TW (1) TWI362304B (es)

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TW200603917A (en) 2006-02-01
US7736582B2 (en) 2010-06-15
TWI362304B (en) 2012-04-21
US20050275143A1 (en) 2005-12-15

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