Method of producing sintered silicon carbide and sintered...

C - Chemistry – Metallurgy – 04 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C04B 35/573 (2006.01)

Patent

CA 2463887

A process for producing a silicon carbide sinter by the reaction sintering method, which comprises: a step (1) in which silicon carbide powders are dissolved or dispersed in a solvent to produce a powder mixture in a slurry form; a step (2) in which the resultant powder mixture is poured into a mold and dried to obtain a green shape; a step (3) in which the green shape is calcined in a vacuum or inert gas atmosphere at 1,200 to 1,900~C to obtain a calcine (1); a step (4) in which the calcine (1) is impregnated with a phenolic resin as a carbon source; a step (5) in which the calcine (1) impregnated with the carbon source is calcined in a vacuum or inert gas atmosphere at 900 to 1,400~C to obtain a calcine (2); and a step (6) in which the calcine (2) is impregnated with molten silicon metal by means of capillary to react the free carbon contained in the calcine (2) with the silicon sucked up by the calcine (2) by means of capillary to thereby obtain a silicon carbide sinter.

L'invention concerne un procédé d'élaboration de carbure de silicium fritté, par frittage réactif, selon les étapes suivantes: (1) dissolution ou dispersion de poudres de carbure de silicium dans un solvant, pour établir un mélange poudreux en suspension épaisse; (2) injection du mélange résultant dans un moule et séchage, pour produire une forme verte; (3) calcination de la forme verte, en atmosphère de vide ou de gaz inerte, entre 1 200 et 1 900· C, pour produire un calcinat (1); (4) imprégnation de ce calcinat (1) avec une résine phénolique tenant lieu de source de carbone; (5) calcination du calcinat (1) ainsi imprégné, en atmosphère de vide ou de gaz inerte, entre 900 et 1 400· C, pour produire un calcinat (2); et (6) imprégnation du calcinat (2) avec du silicium fondu, par le biais d'un capillaire, pour faire réagir le carbone libre contenu dans le calcinat (2) avec le silicium aspiré par ce calcinat (2) via le capillaire, en vue de produire le carbure de silicium fritté recherché.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method of producing sintered silicon carbide and sintered... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing sintered silicon carbide and sintered..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing sintered silicon carbide and sintered... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1751573

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.