Method of forming composite ceramic targets

H - Electricity – 05 – H

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H05H 6/00 (2006.01) G21K 5/08 (2006.01)

Patent

CA 2567747

Disclosed are processes and compositions for fabricating irradiation targets from slurry compositions using a slip casting method to form a layer of the slurry composition on a substrate. The layer of slurry is allowed to dry on the substrate to produce a green cast layer that may then be cut, milled or otherwise machined to form intermediate targets having one or more predetermined configurations. These intermediate targets are subsequently subjected to a thermal process by which organic components remaining in the green cast layer are driven off and/or oxidized to form a densified, substantially inorganic, layer that has a density below that of the primary particles.

L'invention concerne des procédés et des compositions de fabrication de cibles d'irradiation à partir de compositions pâteuses obtenues selon un procédé de coulage de barbotine permettant de former une couche de la composition pâteuse sur un substrat. On laisse la couche de pâte sécher sur le substrat pour produire une couche de moulage au sable vert que l'on peut découper, fraiser ou usiner de toute autre manière pour former des cibles intermédiaires ayant une ou plusieurs configurations prédéterminées. Ces cibles intermédiaires sont ensuite soumises à un traitement thermique pour évacuer et/ou oxyder les composants organiques restant dans la couche de moulage au sable vert pour constituer une couche densifiée, sensiblement inorganique, d'une densité inférieure à celles des particules primaires.

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