Honeycomb structural body for exhaust gas purification

• Main Authors: AMBROSINI TIZIANO, SIN XICOLA AUGUSTIN
• Format: Patent
• Language: Chinese; English
• Published: 31.08.2011
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention relates to a honeycomb structural body and to a method for the manufacturing thereof. The manufacturing method comprises the steps of (i) providing a plurality of silicon carbide honeycomb segments each having a cell structure and at least one outer wall, (ii) subjecting said honeycomb segments to an oxidizing thermal treatment in order to form a surface layer of silicon oxides on said at least one outer wall, and (iii) bonding said plurality of oxidized honeycomb segments so as to form said honeycomb structural body in the substantial absence of organic binders with the interposition of a sealing material comprising a mixture of one or more silicon carbide powder, one or more ceramic fiber, and one or more inorganic binder.