HONEYCOMB STRUCTURE

• Main Authors: SUZUKI HIROMASA, TOJO TAKUMI, KAKIHANA MASARU, YAMAMOTO HIROYA, YOSHIDA TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 30.07.2020
• Subjects: ARTIFICIAL STONE; BLASTING; CEMENTS; CERAMICS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; LIME, MAGNESIA; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRACTORIES; SLAG; STEAM ENGINES; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF NATURAL STONE; WEAPONS

To provide a honeycomb structure which is composed of ceria-zirconia composite oxide, and in which a ring-off crack hardly occurs.SOLUTION: A honeycomb structure is composed of a honeycomb fired body in which multiple through-holes are arranged in parallel in a longitudinal direction with partition walls in between. The honeycomb fired body contains ceria-zirconia composite oxide particles and inorganic fibers, and has a b-axis thermal expansion coefficient measured in a direction along a b-axis perpendicular to the longitudinal direction of the honeycomb structure, larger than an a-axis thermal expansion coefficient measured in a direction along an a-axis which is the longitudinal direction of the honeycomb structure.SELECTED DRAWING: Figure 1 【課題】 セリア−ジルコニア複合酸化物からなり、リングオフクラックが生じにくいハニカム構造体を提供する。【解決手段】 複数の貫通孔が隔壁を隔てて長手方向に並設されたハニカム焼成体からなるハニカム構造体であって、上記ハニカム焼成体は、セリア−ジルコニア複合酸化物粒子と無機繊維を含み、上記ハニカム構造体の長手方向であるａ軸に沿った方向で測定したａ軸熱膨張係数より、上記ハニカム構造体の長手方向に垂直な方向であるｂ軸に沿った方向で測定したｂ軸熱膨張係数が大きいことを特徴とする。【選択図】 図１