摘要:
A honeycomb structured body includes a plurality of honeycomb members which are bonded to one another by interposing an adhesive layer. Each of the honeycomb members has a number of cells placed in parallel with one another in the longitudinal direction with a cell wall therebetween. When the longitudinal direction is defined as the orientation axis, the degree of orientation Ω of the inorganic fibers in the adhesive layer obtained by the Saltykov method is set in the range of about 0.2≦Ω≦about 0.7 or in the range of about −0.7≦Ω≦about −0.2 in the adhesive layer.
摘要:
A honeycomb structure includes a plurality of honeycomb fired bodies and an adhesive layer. The plurality of honeycomb fired body has a longitudinal direction and a plurality of cell walls extending along the longitudinal direction to define a plurality of cells. The adhesive layer is provided between the plurality of honeycomb fired bodies to connect the honeycomb fired bodies. Pore diameters of pores in the adhesive layer are about 300 μm or less. A ratio of a total area of pores having a pore diameter of at least about 50 μm and at most about 300 μm and an aspect ratio of at least about 1 and at most about 1.5 in a cross-section perpendicular to the longitudinal direction to a total area of pores having a pore diameter of at least about 50 μm and at most about 300 μm is about 90% or more.
摘要:
A coating, method of coating and substrates coated thereby, wherein the coating contains an inorganic adhesive such as an alkali/alkaline earth metal silicate such as sodium silicate, potassium silicate, calcium silicate, and magnesium silicate; a filler such as a metal oxide for example silicon dioxide, aluminum oxide, titanium dioxide, magnesium oxide, calcium oxide and boron oxide; and one or more emissivity agents such as silicon hexaboride, carbon tetraboride, silicon tetraboride, silicon carbide, molybdenum disilicide, tungsten disilicide, zirconium diboride, cupric chromite, or metallic oxides such as iron oxides, magnesium oxides, manganese oxides, chromium oxides and copper chromium oxides, and derivatives thereof. In a coating solution, an admixture of the coating contains water. A stabilizer such as bentonite, kaolin, magnesium alumina silicon clay, tabular alumina and stabilized zirconium oxide may be added.
摘要:
The honeycomb structural body comprises pillar-ped shaped honeycomb structural porous ceramic members formed by arranging a plurality of cells through cell walls, and a sealing material layer interposed between the ceramic members and having a specific surface area of approximately 10 to 100 m2/g, and the honeycomb structural body is constructed by bonding a plurality of porous ceramic members through sealing material layer as an exhaust gas convertion apparatus.
摘要:
An article has at its surface a nonmetallic ceramic form of a cation reactive with phosphate ion to form a ceramic phosphate, such as an oxide of a cation selected from the group consisting of beryllium, aluminum, iron, magnesium, calcium, thorium, barium, zirconium, zinc, silicon, and mixtures thereof. A source of reactive phosphate ions, such as concentrated phosphoric acid or monoaluminum phosphate, is applied to the surface of the article. The surface of the article is thereafter heated to cause the nonmetallic ceramic form of the cation and the source of the reactive phosphate ions to react together, producing a phosphate-bonded hard layer at the surface of the article.
摘要:
A coating having high resistance to wear caused by impact, abrasion, erosion and corrosion. A trowelable composition containing high alumina ceramic particles and a co-abrasive filler of smaller particles of inorganic and/or metallic origin in a polymer matrix for application to a surface to be repaired or protected.
摘要:
SMALL DIMENSIONAL CHANGES DURING GELLING, CURING AND DRYING, AND HIGL MOLDULUS OF TRANSVERSE RUPTURE STRENGTHS IN REFRACTORY MATERIALS PREPARED FROM REFRACTORY POWDERS, BINDER PRECURSORS, AND GELLING AGENTS ARE OBTAINED BY CAREFUL CONTROL OF THE AMOUNT OF ACID PRESENT DURING THE GELATION STEP.