利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN105555738B 堇青石质陶瓷蜂窝结构体及其制造方法 有权

堇青石质陶瓷蜂窝结构体及其制造方法
摘要：
一种堇青石质陶瓷蜂窝结构体，其特征在于，具有被多孔质的隔壁隔开的多个流路，关于所述隔壁，(a)气孔率为大于65％且75％以下，(b)利用压汞法测定的微孔分布中，(i)累积微孔容积达到总微孔容积的10％的微孔直径d10小于50μm，达到50％的微孔直径(中值微孔直径)d50为18μm以上且27μm以下，达到90％的微孔直径d90为10μm以上，以及(d10‑d90)/d50为2.3以下，(ii)累积微孔容积达到总微孔容积的20％的微孔直径d20的对数与达到80％的微孔直径d80的对数之差σ＝log(d20)‑log(d80)为0.25以下，(iii)表示相对于微孔直径的累积微孔容积的曲线的倾斜度Sn＝‑(Vn‑Vn‑1)/(log(dn)‑log(dn‑1))的最大值为3以上，其中，dn及Vn分别为第n个测定点的微孔直径及累积微孔容积，且dn‑1及Vn‑1分别为第(n‑1)个测定点的微孔直径及累积微孔容积。
摘要（英）：

A cordierite-type ceramic honeycomb structure having large numbers of flow paths partitioned by porous cell walls; the cell walls having (a) porosity of more than 65% and 75% or less, (b) in a pore diameter distribution measured by mercury porosimetry, (i) a pore diameter d10 at a cumulative pore volume corresponding to 10% of the total pore volume being less than 50 µm, a pore diameter (median pore diameter) d50 at 50% being 18-27 µm, a pore diameter d90 at 90% being 10 µm or more, and (d10-d90)/d50 being 2.3 or less; (ii) à [= log(d20) - log(d80)] being 0.25 or less, wherein à represents the difference between a logarithm of a pore diameter d20 at a cumulative pore volume corresponding to 20% of the total pore volume and a logarithm of a pore diameter d80 at a cumulative pore volume corresponding to 80% of the total pore volume; and (iii) the maximum of the inclination S n = -(V n - V n-1 )/[log(d n ) - log(d n-1 )] of a curve of a cumulative pore volume to a pore diameter being 3 or more, wherein d n and V n are respectively a pore diameter and a cumulative pore volume at an n-th measurement point, and d n-1 and V n-1 are respectively a pore diameter and a cumulative pore volume at a (n-1)-th measurement point.

公开/授权文献
0/0