METHOD FOR OBTAINING A COMPOSITE FERRO-ELECTRIC MATERIAL

The invention relates to a method for obtaining a composite ferro-electric material, consisting of the following stages: particles of a ferro-electric compound are covered with a dielectric layer; a dense composite material is formed by sintering the covered particles. The invention is characterized...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	AYMONIER, CYRIL, GERARD, JACQUES, MAGLIONE, MARIO, HUBER, CHRISTOPHE, ANTOINE, STEPHANE, CANSELL, FRANCOIS, PIERRE, MICHEL, ELISSALDE, CATHERINE, JOCELYNE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CEMENTS CERAMICS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIME, MAGNESIA METALLURGY REFRACTORIES SEMICONDUCTOR DEVICES SLAG SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The invention relates to a method for obtaining a composite ferro-electric material, consisting of the following stages: particles of a ferro-electric compound are covered with a dielectric layer; a dense composite material is formed by sintering the covered particles. The invention is characterized in that in the covering stage the particles of the ferro-electric compound are brought into contact with a fluid containing at least one solvent and a precursor of the dielectric compound, said fluid being pressurized. L'invention concerne un procédé d'obtention d'un matériau composite ferroélectrique, comprenant les étapes consistant à - enrober des particules d'un composé ferroélectrique d'une couche d'un composé diélectrique, - former un matériau composite dense par frittage des particules enrobées, caractérisé en ce que l'étape d'enrobage comprend une mise en contact des particules du composé ferroélectrique avec un fluide contenant au moins un solvant et un précurseur du composé diélectrique, le fluide étant maintenu sous pression.