| abstract |
A honeycomb filter capable of improving the collection efficiency of fine particles while reducing the coefficient of thermal expansion. A honeycomb filter 100 is made of porous ceramics containing aluminum titanate, and has a plurality of substantially parallel flow paths 110a, 110b partitioned by a partition wall 112, and flows on one end face 100a. One end of the channel 110a is sealed by the sealing portion 114, the other end of the flow channel 110b is sealed by the sealing portion 114 at the other end surface 100b, the average pore diameter of the partition 112 is 10 μm or more, and the pores of the partition 112 The rate is 30-50% by volume. [Selection] Figure 1 |