A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HONEYCOMB STRUCTURE AND PRODUCTION METHOD OF HONEYCOMB STRUCTURE
To provide a novel honeycomb structure capable of improving performance to a pressure drop and a PM leakage.SOLUTION: A honeycomb structure is configured so that a partition wall 23 between adjacent cells is formed of a porous material mainly formed of cordierite. On the partition wall 23, a porosity of a surface layer part 32 which is a part to a depth of 25% of a thickness of the partition wall 23 from each surface 31, and a porosity of an interior part 33 being other part, are 50% or greater. The surface layer part 32 comprises pores whose axial direction pore width is less than 30 μm, the axial direction pore width being a pore width in an axial direction in a binarization image in a cross section parallel to the axial direction, and pores whose axial direction pore width is 30 μm or greater, the interior part 33 also comprises pores whose axial direction pore width is less than 30 μm and pores whose axial direction pore width is equal to or greater than 30 μm. An axial direction average pore width being an average pore width in an axial direction of the surface layer part 32 in the binarization image, is smaller than an axial direction average pore width of the interior part 33.SELECTED DRAWING: Figure 4
【課題】圧力損失およびＰＭ漏れに関する性能が向上された新規なハニカム構造体を提供する。【解決手段】ハニカム構造体では、隣接するセルの間の隔壁２３はコージェライトを主成分とする多孔質材料で形成される。隔壁２３において、両表面３１のそれぞれから隔壁２３の厚さの２５％の深さまで部位である表層部３２の気孔率、および、他の部位である内部３３の気孔率は、５０％以上である。表層部３２は、軸方向に平行な断面の２値化画像における軸方向の気孔幅である軸方向気孔幅が３０μｍ未満の気孔と、軸方向気孔幅が３０μｍ以上の気孔とを含み、内部３３も、軸方向気孔幅が３０μｍ未満の気孔と、軸方向気孔幅が３０μｍ以上の気孔とを含む。当該２値化画像における表層部３２の軸方向の平均気孔幅である軸方向平均気孔幅は、内部３３の軸方向平均気孔幅よりも小さい。【選択図】図４
HONEYCOMB STRUCTURE AND PRODUCTION METHOD OF HONEYCOMB STRUCTURE
To provide a novel honeycomb structure capable of improving performance to a pressure drop and a PM leakage.SOLUTION: A honeycomb structure is configured so that a partition wall 23 between adjacent cells is formed of a porous material mainly formed of cordierite. On the partition wall 23, a porosity of a surface layer part 32 which is a part to a depth of 25% of a thickness of the partition wall 23 from each surface 31, and a porosity of an interior part 33 being other part, are 50% or greater. The surface layer part 32 comprises pores whose axial direction pore width is less than 30 μm, the axial direction pore width being a pore width in an axial direction in a binarization image in a cross section parallel to the axial direction, and pores whose axial direction pore width is 30 μm or greater, the interior part 33 also comprises pores whose axial direction pore width is less than 30 μm and pores whose axial direction pore width is equal to or greater than 30 μm. An axial direction average pore width being an average pore width in an axial direction of the surface layer part 32 in the binarization image, is smaller than an axial direction average pore width of the interior part 33.SELECTED DRAWING: Figure 4
【課題】圧力損失およびＰＭ漏れに関する性能が向上された新規なハニカム構造体を提供する。【解決手段】ハニカム構造体では、隣接するセルの間の隔壁２３はコージェライトを主成分とする多孔質材料で形成される。隔壁２３において、両表面３１のそれぞれから隔壁２３の厚さの２５％の深さまで部位である表層部３２の気孔率、および、他の部位である内部３３の気孔率は、５０％以上である。表層部３２は、軸方向に平行な断面の２値化画像における軸方向の気孔幅である軸方向気孔幅が３０μｍ未満の気孔と、軸方向気孔幅が３０μｍ以上の気孔とを含み、内部３３も、軸方向気孔幅が３０μｍ未満の気孔と、軸方向気孔幅が３０μｍ以上の気孔とを含む。当該２値化画像における表層部３２の軸方向の平均気孔幅である軸方向平均気孔幅は、内部３３の軸方向平均気孔幅よりも小さい。【選択図】図４
HONEYCOMB STRUCTURE AND PRODUCTION METHOD OF HONEYCOMB STRUCTURE
ハニカム構造体、および、ハニカム構造体の製造方法
HAYASE TORU (author) / SUZUKI SHINJI (author) / OSHIMA SHIMPEI (author) / TOMITA TAKAHIRO (author)
2020-10-01
Patent
Electronic Resource
Japanese
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