摘要:
A joined body 20 according to the present invention includes a first member 22 made of a porous ceramic, a second member 24 made of a metal, and a joint 30 formed of an oxide ceramic of a transition metal, the joint 30 joining the first member 22 to the second member 24. Alternatively, a joined body may include a first member made of a dense material, a second member made of a dense material, and a joint formed of an oxide ceramic of a transition metal, the joint joining the first member to the second member.
摘要:
A silicon carbide material according to the present invention includes a substrate containing, as a main component, silicon carbide or containing, as main components, silicon carbide and metallic silicon, and a film covering at least a portion of the surface of the substrate. The film contains, as a main component, a phase including at least four elements: lithium (Li), aluminum (Al), silicon (Si), and oxygen (O). One example of such a silicon carbide material includes a substrate having a structure in which silicon carbide particles are bonded by metallic silicon, and a lithium aluminosilicate film covering at least a portion of the surface of the silicon carbide particles. Such a silicon carbide material can be used for a DPF, an electric heating type catalytic converter, or the like.
摘要:
There is disclosed a porous material containing aggregates; and a composite binding material which binds the aggregates to one another in a state where pores are formed and in which mullite particles that are reinforcing particles are dispersed in cordierite that is a binding material, and a content of metal silicon is smaller than 15 mass%. Preferably, to a total mass of the aggregates, the composite binding material and the metal silicon, a lower limit value of a content of the composite binding material is 12 mass%, and an upper limit value of the content of the composite binding material is 50 mass%. Preferably, to the total mass of the aggregates, the composite binding material and the metal silicon, a lower limit value of a content of the mullite particles is 0.5 mass%, and an upper limit value of the content of the mullite particles is 15 mass%. A porous material having a high thermal shock resistance is provided.
摘要:
There is disclosed a silicon carbide porous material having a high thermal shock resistance. The silicon carbide porous material of the present invention includes silicon carbide particles, metal silicon and an oxide phase, and the silicon carbide particles are bonded to one another via at least one of the metal silicon and the oxide phase. Furthermore, the oxide phase includes a parent phase, and a dispersion phase dispersed in the parent phase and having a higher thermal expansion coefficient than the parent phase. Here, a lower limit value of a content ratio of the dispersion phase in the oxide phase is preferably 1 mass%, and upper limit value of the content ratio of the dispersion phase in the oxide phase is 40 mass%. Furthermore, it is preferable that the parent phase is cordierite and that the dispersion phase is mullite.
摘要:
Provided are a Ti 3 SiC 2 based material being superior in arc resistance, an electrode, a spark plug, and methods for manufacturing thereof, and including Ti 3 SiC 2 as a main phase, wherein the Ti 3 SiC 2 material has a TiC content of 0.5 mass% or less and open porosity of 0.5% or less, and preferably 0 to 30 mol% of Si in the main phase Ti 3 SiC 2 is substituted with Al, and a spark plug of the present invention includes an electrode made of the Ti 3 SiC 2 based material.
摘要:
Barium titanate (BaTiO 3 ) and barium zirconate (BaZrO 3 ) are made into a solid solution at a predetermined ratio. Specifically, a dielectric ceramic composition is represented by a basic composition (BaTiO 3 ) (1-X) (BaZrO 3 ) X (in the formula, X satisfies 0.70 ‰¤ X ‰¤ 0.95). More preferably, X satisfies 0.73 ‰¤ X ‰¤ 0.90 in this range. Such a dielectric ceramic composition may be integrated with alumina to form a composite ceramic structure.
摘要:
Strontium titanate (SrTiO 3 ) and barium zirconate (BaZrO 3 ) are made into a solid solution at a predetermined ratio. Specifically, a dielectric ceramic composition is represented by a basic composition (SrTiO 3 ) (1-X) (BaZrO 3 ) X (in the formula, X satisfies 0.63 X 0.95). More preferably, X satisfies 0.67 X 0.90 in this range. Such a dielectric ceramic composition may be integrated with alumina to form a composite ceramic structure.
摘要:
There are disclosed a porous material having a high thermal shock resistance and a honeycomb structure. The porous material contains main aggregates and auxiliary aggregates as aggregates, the main aggregates are silicon carbide particles, the auxiliary aggregates are at least either of mullite particles or alumina particles, the aggregates are bound to one another via a binding phase, so as to form pores, and the binding phase is at least one of an amorphous phase and a cordierite phase, and a porosity is from 40 to 90%. Furthermore, the honeycomb structure is constituted of such a porous material, and includes partition walls defining and forming a plurality of cells extending from one end face to the other end face.