A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROCÉDÉ DE FABRICATION DE PIÈCES EN CÉRAMIQUE ET UTILISATION DES PIÈCES OBTENUES PAR CE PROCÉDÉ
In order to produce a ceramic part from a mixture of two pulverulent mineral materials which differ in terms of their size and which consist of alumina and titanium oxide: (a) a homogenous aqueous suspension of the mixture is prepared, with one or more binders and/or one or more plasticisers which are capable of being pyrolysed by heat during subsequent sintering, the preparation consisting in: (a1) bringing the starting materials into contact with water and at least one deflocculating agent and/or at least one dispersant, and mixing in order to deagglomerate the pulverulent materials; and (a2) adding the binder(s) and/or the plasticiser(s) to the suspension obtained in (a1) until they are homogenised; (b) carrying out cryogenic granulation of the aqueous suspension obtained in (a2), said cryogenic granulation consisting in freezing by spraying followed by lyophilisation in order to obtain lyophilised granules; (c) shaping the granules obtained in (b) by pressing to obtain a preform; then (d) the preform is sintered in order to obtain the desired part.
PROCÉDÉ DE FABRICATION DE PIÈCES EN CÉRAMIQUE ET UTILISATION DES PIÈCES OBTENUES PAR CE PROCÉDÉ
In order to produce a ceramic part from a mixture of two pulverulent mineral materials which differ in terms of their size and which consist of alumina and titanium oxide: (a) a homogenous aqueous suspension of the mixture is prepared, with one or more binders and/or one or more plasticisers which are capable of being pyrolysed by heat during subsequent sintering, the preparation consisting in: (a1) bringing the starting materials into contact with water and at least one deflocculating agent and/or at least one dispersant, and mixing in order to deagglomerate the pulverulent materials; and (a2) adding the binder(s) and/or the plasticiser(s) to the suspension obtained in (a1) until they are homogenised; (b) carrying out cryogenic granulation of the aqueous suspension obtained in (a2), said cryogenic granulation consisting in freezing by spraying followed by lyophilisation in order to obtain lyophilised granules; (c) shaping the granules obtained in (b) by pressing to obtain a preform; then (d) the preform is sintered in order to obtain the desired part.
PROCÉDÉ DE FABRICATION DE PIÈCES EN CÉRAMIQUE ET UTILISATION DES PIÈCES OBTENUES PAR CE PROCÉDÉ
METHOD FOR PRODUCING CERAMIC PARTS AND USE OF THE PARTS OBTAINED BY THIS METHOD
VERFAHREN ZUR HERSTELLUNG VON KERAMIKTEILEN UND VERWENDUNG DER NACH DIESEM VERFAHREN ERHALTENEN TEILE
TABARES MEDINA TATIANA (author) / DELHOTE NICOLAS (author) / GEFFROY PIERRE-MARIE (author) / TANTOT OLIVIER (author) / CHARTIER THIERRY (author)
2024-09-11
Patent
Electronic Resource
French
IPC:
C04B
Kalk
,
LIME
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
F26B
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
,
Trocknen von festen Gütern oder Erzeugnissen durch Entfernen von Flüssigkeit
/
H01P
WAVEGUIDES
,
Wellenleiter [Hohlleiter]
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