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AssigneeNGK Insulators, Ltd.
InventorsKazuhiko Kumazawa, Yasushi Noguchi, Hideaki Nishi, Hiroyuki Suenobu
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A ceramics structure body having chemical composition of 42 to 56 wt % of SiO2, 30 to 45 wt % of Al2O3 and 12 to 16 wt % of MgO, crystalline phase mainly composed of cordierite, a porosity of 55 to 65%, an average pore size of 15 to 30 μm; and the total area of pores exposed on surfaces of partition walls constituting the honeycomb ceramics structure body being 35% or more of the total area of partition wall surfaces. Fifteen to 25 wt % of graphite and 5 to 15 wt % of a synthetic resin are added as a pore forming agent to a cordierite-forming raw material; the resultant is kneaded and molded into a honeycomb shape; and the resultant is dried and fired to produce above-mentioned honeycomb ceramics structure body. According to this honeycomb ceramics structure body, a low pressure loss and a high collection efficiency can be attained.
A honeycomb ceramics structure body having chemical composition of 42 to 56 wt % of SiO2, 30 to 45 wt % of Al2O3 and 12 to 16 wt % of MgO, and the crystalline phase mainly composed of cordierite, characterized in that said honeycomb ceramics structure body has a porosity of 55 to 65%, an average pore size of 15 to 30 μm;
A honeycomb ceramics structure body having chemical composition of 42 to 56 wt % of SiO2, 30 to 45 wt % of Al2O3 and 12 to 16 wt % of MgO, the crystalline phase mainly composed of cordierite, a porosity of 55 to 65%, an average pore size of 15 to 30 μm;
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