MULLITE BODY AND METHOD OF FORMING THE MULLITE BODY

PROBLEM TO BE SOLVED: To provide a method of forming a porous mullite composition of acicular mullite grain having improved properties and formed in the presence of a fluorine-containing gas at some time. SOLUTION: The improved properties may result from heating the mullite to a high temperature in...

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Hauptverfasser:	TODD CLIFFORD S, PRUNIER ARTHUR R JR, SAHA CHANDAN K, WALLIN STEN A, PYZIK ALEKSANDER J
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING INORGANIC CHEMISTRY LIGHTING LIME, MAGNESIA MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SEPARATION SLAG STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of forming a porous mullite composition of acicular mullite grain having improved properties and formed in the presence of a fluorine-containing gas at some time. SOLUTION: The improved properties may result from heating the mullite to a high temperature in an atmosphere selected from the group consisting of water vapor, oxygen, an inert gas or mixtures thereof or forming the mullite composition from precursors having an Al/Si ratio of at most 2.95. COPYRIGHT: (C)2010,JPO&INPIT