Open-porous molded body, method for production and use thereof

Details Open-porous molded body, method for production and use thereof Open-porous molded body, method for production and use thereof

B - Operations, Transporting

22

F

B22F 7/00 (2006.01) B01D 39/20 (2006.01) B22F 3/11 (2006.01)

Patent

CA 2496148

The invention relates to a method for fabricating an open-porous molded body which is formed from nickel or iron and at least another element which form solid solutions or intermetallic phases as well as a molded body which is correspondingly fabricated, and the use thereof. During the fabrication it is proceeded then, such that a coating with a metallic powder forming solid solutions or intermetallic phases is deposited upon an open-porous body made of nickel or iron by means of an organic binder. Subsequent thereto, the open- porous body provided with the coating is brought into the desired shape with observing minimum bending radii, and subsequently the organic components are removed in a first thermal treatment step. By means of a second thermal treatment the open-porous molded body is sintered, and the solid solution or the intermetallic phase are formed.

L'invention se rapporte à un procédé de fabrication d'un corps moulé à pores ouverts qui est formé à partir de nickel ou de fer et d'au moins un autre élément permettant la formation de solutions solides ou de phases intermétalliques. L'invention se rapporte également à un corps moulé qui est fabriqué conformément audit procédé, ainsi qu'à l'utilisation de ce corps moulé. Au cours du processus de fabrication, un revêtement avec une poudre métallique formant des solutions solides ou des phases intermétalliques est déposé sur un corps à pores ouverts constitué de nickel ou de fer au moyen d'un liant organique. Le corps à pores ouverts qui est doté du revêtement est ensuite soumis à un façonnage lui conférant une forme souhaitée dotée de rayons de courbure minimum, puis les composants organiques sont retirés au cours d'une première étape de traitement thermique. Au moyen d'un second traitement thermique, le corps moulé à pores ouverts est fritté, et la solution solide ou la phase intermétallique est formée.

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