Silicon nitride filter and method for its production

• Main Authors: MIYAKAWA, NAOMICHI, SHINOHARA, NOBUHIRO, ARAI, KANJI, TAKAHASHI, HIDEO
• Format: Patent
• Language: English; French; German
• Published: 06.12.2006
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRACTORIES; SEPARATION; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE

The present invention provides a method for producing a silicon nitride filter, characterized by heat-treating in nitrogen a green body comprising from 40 to 90 % of metal silicon particles having an average particle diameter of from 1 to 200 µm and from 10 to 60 % of a pore-forming agent, provided...