摘要:
The present application describes a method of joining at least two parts (1, 2) made of silicon-carbide-based materials by non-reactive brazing, in which the parts (1, 2) are brought into contact with a non-reactive brazing composition (3), the assembly (1-3) formed by the parts (1, 2) and the brazing composition (3) is heated to a brazing temperature sufficient for the brazing composition (3) to completely or at least partially melt and the parts and the brazing composition (3) are cooled so as to form, after said composition has solidified, a moderately refractory joint, in which the non-reactive brazing composition (3) is a binary alloy consisting, expressed in atomic percentages, of 60% to 66% silicon and 34% to 40% nickel and in which, prior to the parts (1, 2) being brought into contact with the brazing composition, a reinforcement is added. The present application also describes a composition for the non-reactive brazing of parts made of silicon-carbide-based materials, comprising said non-reactive brazing composition and also an addition of a reinforcement, and a joint and an assembly that are obtained by said method.
摘要:
A ceramic product (1) comprises a first ceramic part (2) and a second ceramic part (3), wherein the first ceramic part (2) is connected to the second ceramic part (3) by means of a joint, wherein the joint comprises an active brazing alloy, characterized in that the components of the active brazing alloy in the joint are inhomogeneously distributed, the at least one active component of the active brazing alloy being enriched at least at an interface between the active brazing alloy and the ceramic. To produce the product, the active brazing alloy material is provided in such a way that initially at least one surface portion of at least one of the ceramic parts is coated with at least one active component of the active brazing alloy, and that the coated portion is provided with an alloy which alloys with the coating when the alloy melts during heating, and forms a metallic joint between the two ceramic parts.
摘要:
A honeycomb structure includes a pillar-shaped honeycomb unit having cells defined by cell walls. The cell walls contain silicon carbide particles, and a nitrogen-containing layer is formed on surfaces of the silicon carbide particles.
摘要:
An improved ceramic honeycomb structure is comprised of at least two separate smaller ceramic honeycombs that have been adhered together by a cement layer comprised of a cement layer has at least two regions of differing porosity or cement layer where the ratio of toughness/Young's modulus is at least about 0.1 MPa•m 1/2 /GPa.
摘要:
Disclosed is a bonding material composition to obtain a bonded article in which two or more objects to be bonded are integrally bonded via bonding material layers. The bonding material composition includes plate-like particles, non-plate-like particles and an inorganic adhesive as main components. The non-plate-like particles are constituted of non-plate-like particles A having an average particle diameter of 10 µm or more and non-plate-like particles B having an average particle diameter of less than 10 µm, and a ratio of the non-plate-like particles B is 10 to 35 mass% of the total main components.
摘要:
Disclosed is a honeycomb structure configured to include a pillar-shaped honeycomb unit divided by cell walls. In the honeycomb structure, a pair of electrodes is arranged at the cell walls and/or a peripheral wall of the honeycomb unit, the cell walls of the honeycomb unit are composed of a ceramic aggregate and pores formed in the aggregate, and the cell walls contain a substance having an electrical resistivity lower than an electrical resistivity of ceramic forming the aggregate.
摘要:
A method of manufacturing a honeycomb structural body including at least one honeycomb unit including plural cells extending from a first end face to a second end face in a longitudinal direction, the plural cells being partitioned by cell walls, the at least one honeycomb unit including zeolite particles that have undergone iron ion-exchange, the method including (a) a step of performing a heat treatment on the zeolite particles that have undergone the iron ion-exchange, the heat treatment being performed in a non-oxygenated atmosphere having a temperature within a range of 500°C through 800 °C, to obtain heat-treated zeolite particles; (b) a step of forming at least one honeycomb molded body from a raw material including the heat-treated zeolite particles; and (c) a step of manufacturing the at least one honeycomb unit by firing the at least one honeycomb molded body.