Porous sintered body and method of manufacturing same

B - Operations – Transporting – 22 – F

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25/141, 75/156,

B22F 3/10 (2006.01) B01D 39/20 (2006.01) B01J 19/08 (2006.01) B22F 3/105 (2006.01) B22F 3/11 (2006.01) C04B 35/64 (2006.01) C04B 38/00 (2006.01)

Patent

CA 2022472

Powder of fine particles of an electrically conductive or semiconductive material, which have a diameter of 10 µm or less, is pressurized, and, at the same time, a pulse voltage is applied between the fine particles to produce an electric discharge therebetween. The fine particles are fused together at areas where they contact each other, thereby producing a porous sintered body. The porous sintered body is made of only an electrically conductive or semiconductive material without using any particle binders whatsoever.

Une poudre de fines particules ayant un diamètre de 10 µm ou moins d'une matière conductrice ou semi-conductrice est mise sous pression et, en même temps, on applique une tension d'impulsion entre les fines particules pour produire entre elles une décharge électrique. Les fines particules sont soudées entre elles aux points où elles sont en contact les unes avec les autres, ce qui donne un corps poreux fritté. Le corps poreux fritté est fait seulement d'une matière conductrice ou semi-conductrice sans qu'on fasse usage d'aucun liant de particules.

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