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Ceramic honeycomb filter and its production method
A ceramic honeycomb filter comprising a ceramic honeycomb structure having pluralities of flow paths partitioned by porous cordierite cell walls, and plugs formed in predetermined flow paths of the ceramic honeycomb structure; the plugs being formed by ceramic particles and an amorphous oxide matrix existing between the ceramic particles; in a cross section of the plugs, an area ratio A1 of the amorphous oxide matrix in a longitudinal range of ⅓×t from one end, and an area ratio A2 of the amorphous oxide matrix in a longitudinal range of ⅓×t from the other end meeting the relation of ½≤A1/A2≤2, wherein t represents the length of the plug in a direction perpendicular to the longitudinal direction of the plug.
Ceramic honeycomb filter and its production method
A ceramic honeycomb filter comprising a ceramic honeycomb structure having pluralities of flow paths partitioned by porous cordierite cell walls, and plugs formed in predetermined flow paths of the ceramic honeycomb structure; the plugs being formed by ceramic particles and an amorphous oxide matrix existing between the ceramic particles; in a cross section of the plugs, an area ratio A1 of the amorphous oxide matrix in a longitudinal range of ⅓×t from one end, and an area ratio A2 of the amorphous oxide matrix in a longitudinal range of ⅓×t from the other end meeting the relation of ½≤A1/A2≤2, wherein t represents the length of the plug in a direction perpendicular to the longitudinal direction of the plug.
Ceramic honeycomb filter and its production method
NOGUCHI ATSUHIRO (author) / SOGA WATARU (author)
2020-02-11
Patent
Electronic Resource
English
MANUFACTURING METHOD OF CERAMIC HONEYCOMB FILTER AND CERAMIC HONEYCOMB FILTER
| European Patent Office | 2019