Equipment and process for the preparation of electric...

G - Physics – 01 – N

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G01N 1/36 (2006.01) G01N 1/28 (2006.01)

Patent

CA 2242054

Equipment for the preparation of electric conducting composite samples by infiltration in a mould characterized in that it essentially comprises: - a pressurization/infiltration chamber having at least one opening to connect it by means of appropriate tubes with a vacuum line and a pressure line and devices for sealing both under vacuum and under pressure; - a sample-holder, inside said chamber, made of a material with a high thermal conductivity with one or more seats in each of which a mould is housed consisting of: - a chemically inert and thermally stable tube made of a non-porous material; - a plug, situated at one end of the tube, of a material which is different from the tube; - a chemically inert and thermally stable spacer of non-porous material, situated inside the tube in contact with the plug; - means for creating a vacuum in the chamber; - means for pressurizing the chamber; - means for the thermal treatment of the sample-holder.

Equipement utilisé pour la préparation d'échantillons de matériaux composites conducteurs par infiltration dans un moule caractérisé par le fait qu'il comprend essentiellement : une chambre de pressurisation/infiltration comportant au moins une ouverture pour la relier au moyen de tubes appropriés à une tuyauterie sous vide ou une tuyauterie sous pression et des dispositifs permettant de sceller la tuyauterie sous vide comme la tuyauterie sous pression; un porte-échantillon, à l'intérieur de cette chambre, fabriqué d'un matériau possédant une conductivité thermique élevée comptant un ou plusieurs logements abritant chacun un moule composé d'un tube chimiquement inerte et thermiquement stable en matériau non poreux; un bouchon, situé à une extrémité du tube, fabriqué d'un matériau qui est différent de celui du tube; une cale-témoin chimiquement inerte et thermiquement stable en matériau non poreux, placée à l'intérieur du tube en contact avec le bouchon; un mécanisme pour créer un vide dans la chambre; un mécanisme pour pressuriser la chambre; un mécanisme de traitement thermique du porte-échantillon.

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