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1. WO1996005152 - BORON CARBIDE CERMET STRUCTURAL MATERIALS WITH HIGH FLEXURE STRENGTH AT ELEVATED TEMPERATURES

Publication Number WO/1996/005152
Publication Date 22.02.1996
International Application No. PCT/US1995/010119
International Filing Date 08.08.1995
Chapter 2 Demand Filed 27.02.1996
IPC
C04B 35/65 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
64Burning or sintering processes
65Reaction sintering of free metal- or free silicon-containing compositions
C04B 41/51 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
45Coating or impregnating
50with inorganic materials
51Metallising
C04B 41/52 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
45Coating or impregnating
52Multiple coating or impregnating
C04B 41/88 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
80of only ceramics
81Coating or impregnating
85with inorganic materials
88Metals
C04B 41/89 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
80of only ceramics
81Coating or impregnating
89for obtaining at least two superposed coatings having different compositions
C22C 1/05 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making non-ferrous alloys
04by powder metallurgy
05Mixtures of metal powder with non-metallic powder
CPC
C04B 2111/00931
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2111Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
00474Uses not provided for elsewhere in C04B2111/00
00905as preforms
00913as ceramic preforms for the fabrication of metal matrix comp, e.g. cermets
00931Coated or infiltrated preforms, e.g. with molten metal
C04B 35/65
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
35Shaped ceramic products characterised by their composition
622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
64Burning or sintering processes
65Reaction sintering of free metal- or free silicon-containing compositions
C04B 41/009
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
009characterised by the material treated
C04B 41/5155
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
45Coating or impregnating
50with inorganic materials
51Metallising ; , e.g. infiltration of sintered ceramic preforms with molten metal
515Other specific metals
5155Aluminium
C04B 41/52
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
45Coating or impregnating
52Multiple coating or impregnating ; multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
C04B 41/88
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
80of only ceramics
81Coating or impregnation
85with inorganic materials
88Metals
Applicants
  • THE DOW CHEMICAL COMPANY [US/US]; 2030 Dow Center Abbott Road Midland, MI 48640, US (AllExceptUS)
  • PYZIK, Alekxander, J. [US/US]; US (UsOnly)
  • FULLER, Sharon, M. [US/US]; US (UsOnly)
  • BEAMAN, Donald, R, [US/US]; US (UsOnly)
Inventors
  • PYZIK, Alekxander, J.; US
  • FULLER, Sharon, M.; US
  • BEAMAN, Donald, R,; US
Agents
  • HOWARD, Dan, R.; The Dow Chemical Company Patent Dept. P.O. Box 1967 Midland, MI 48641-1967, US
Priority Data
08/289,96712.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BORON CARBIDE CERMET STRUCTURAL MATERIALS WITH HIGH FLEXURE STRENGTH AT ELEVATED TEMPERATURES
(FR) MATERIAUX STRUCTURELS A BASE DE CERMETS DE CARBURE DE BORE, PRESENTANT UNE FORTE RESISTANCE A LA FLEXION A DES TEMPERATURES ELEVEES
Abstract
(EN)
Prepare boron carbide-aluminum structural composites by infiltrating molten aluminum or aluminum alloy into a porous preform that is either unbaked or baked at a temperature of up to 1800 °C to form a densified cermet and then heat treat the cermet in air or an oxygen-containing atmosphere to form a dense outer surface layer of aluminum oxide. The resulting structural cermets can withstand prolonged exposure to temperatures above the melting point of aluminum without suffering undue degradation of physical properties such as flexure strength.
(FR)
On peut préparer des matériaux composites structurels en carbure de bore-aluminium en infiltrant de l'aluminium ou un alliage d'aluminium fondu dans une ébauche poreuse non cuite ou cuite à une température pouvant atteindre 1800 °C pour former un cermet densifié que l'on traite ensuite à chaud dans l'air ou dans une atmosphère contenant de l'oxygène pour former une couche de surface externe dense en oxyde d'aluminium. Les cermets structurels résultants peuvent résister à une exposition prolongée à des températures dépassant celle du point de fusion de l'aluminium sans subir de dégradation marquée de leurs caractéristiques physiques telles que la résistance à la flexion.
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