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1. WO2000040521 - LOW SINTERING TEMPERATURE CORDIERITE BATCH AND CORDIERITE CERAMIC PRODUCED THEREFROM

Publication Number WO/2000/040521
Publication Date 13.07.2000
International Application No. PCT/US1999/030291
International Filing Date 17.12.1999
Chapter 2 Demand Filed 04.05.2000
IPC
C04B 35/195 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
01based on oxides
16based on silicates other than clay
18rich in aluminium oxide
195Alkaline earth aluminosilicates, e.g. cordierite
C04B 38/00 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
38Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
CPC
C04B 2111/00129
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
00034Physico-chemical characteristics of the mixtures
00129Extrudable mixtures
C04B 2111/0081
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
0081as catalysts or catalyst carriers
C04B 2111/325
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
32Expansion-inhibited materials
325the expansion being inhibited in one direction only
C04B 35/195
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
01based on oxide ceramics
16based on silicates other than clay
18rich in aluminium oxide
195Alkaline earth aluminosilicates, e.g. cordierite ; or anorthite
C04B 38/0006
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
38Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
0006Honeycomb structures
Applicants
  • CORNING INCORPORATED [US/US]; 1 Riverfront Plaza Corning, WY 14831, US
Inventors
  • MERKEL, Gregory, A.; US
Agents
  • SCHAEBERLE, Timothy, M.; Patent Dept. SP TI 3-1 Corning Incorporated Corning, NY 14831, US
Priority Data
60/114,42031.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LOW SINTERING TEMPERATURE CORDIERITE BATCH AND CORDIERITE CERAMIC PRODUCED THEREFROM
(FR) FOURNEE DE CORDIERITE A TEMPERATURE DE FRITTAGE BASSE ET CERAMIQUE DE CORDIERITE PRODUITE A PARTIR DE CETTE FOURNEE
Abstract
(EN)
The invention is directed at sintered ceramic articles exhibiting a primary crystalline phase of cordierite and an analytical oxide composition, in weight percent, of 44-53 % SiO2, 30-38% A12O3, 11-16% MgO and 0.05 to 10% of a metal oxide. The ceramic article exhibits a coefficient of thermal expansion in at least one direction no greater than about 15.0x10-7/°C over the temperature range of about 25°C to about 800°C. The sum of the weight percentages of residual mullite, corundum, and spinel, as measured by X-ray diffractometry of the crushed and powdered body, is not greater than 15%. Furthermore, the invention discloses a method of producing the aforementioned ceramic body, comprising (a) selecting a raw material batch mixture for forming the cordierite ceramic body, comprising two or more compounds which serve as an alumina source, a silica source and a magnesia source, and at least one metal oxide source in an amount to result in the cordierite body comprising, on an analytical oxide basis, in weight percent, between about 0.05-10% of the metal oxide; (b) adding an organic binder system to the inorganic mixture and forming the mixture into a green body; (c) drying the green body and thereafter firing the green body at a time and at a temperature no greater than about 1300°C to result in sintered ceramic body. Preferred metal oxide sources include the oxides or oxide-forming compounds of the metals selected from the group consisting of molybdenum, tungsten, bismuth, copper, yttrium, lanthanide metals and boron.
(FR)
L'invention concerne des articles en céramique de cordiérite frittés possédant une phase cristalline primaire de cordiérite et une composition d'oxyde analytique composée, en pourcentage en poids, de 44 à 53 % de SiO2, 30 à 38 % de Al2O3, 11 à 16 % de MgO et 0,05 à 10 % d'oxyde métallique. L'article en céramique présente un coefficient de dilatation thermique dans au moins une direction ne dépassant pas 15,0 x 10-7/ °C environ dans la plage de températures comprise entre 25 °C et 800 °C environ. La somme des pourcentages en poids des résidus de mullite, de corindon et de spinelle, telle que mesurée par diffraction de rayons X du corps broyé et en poudre, ne dépasse pas 15 %. En outre, l'invention concerne un procédé de production du corps en céramique susmentionné, le procédé consistant : (a) à sélectionner un mélange de fournée de matière brute pour former le corps de céramique de cordiérite, le mélange contenant deux ou plusieurs composés servant de source d'alumine, de source de silice et de source de magnésie, ainsi qu'au moins une source d'oxyde métallique en quantité telle que le corps de cordiérite comprenne, sur une base d'oxyde analytique, entre 0,05 et 10 % en poids environ d'oxyde métallique ; (b) à ajouter un système de liant organique au mélange inorganique et à former une ébauche crue à partir du mélange ; (c) à sécher l'ébauche crue puis à la soumettre à la cuisson pendant une durée déterminée et à une température ne dépassant pas 1300 °C environ, ce qui produit un corps de céramique fritté. De préférence, les sources d'oxyde métallique comprennent les oxydes ou les composés de formation d'oxydes des métaux sélectionnés dans le groupe formé par le molybdène, le tungstène, le bismuth, le cuivre, l'yttrium, les métaux de lanthanides et le bore.
Also published as
ZA200104012
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