发明名称 |
Cordierite honeycomb ceramics and method producing the same. |
摘要 |
<p>Cordierite honeycomb ceramics comprises a cordierite phase as a main ingredient. A value of [Fe2O3 wt%/(MgO wt%+Fe2O3 wt%)]x100 is 2-10, where a ferric component is calculated as Fe2O3. A thermal expansion coefficient of the cordierite honeycomb ceramics is less than 0.5x10<-><6>/ DEG C within a temperature range of 40-800 DEG C in a direction parallel to a flow passage of a honeycomb body. In the cordierite honeycomb ceramics including a ferric component, a ferric component is added from a talc as raw materials. The cordierite honeycomb ceramics having a low thermal expansion coefficient is obtained by mixing raw materials for cordierite generation to obtain a batch, extruding the batch into a honeycomb formed body, drying the honeycomb formed body, and firing the dried honeycomb formed body at a temperature range of 1350-1450 DEG C. After that, the sintered honeycomb body is immersed in an acid solution if necessary.</p> |
申请公布号 |
EP0671369(A2) |
申请公布日期 |
1995.09.13 |
申请号 |
EP19950301436 |
申请日期 |
1995.03.06 |
申请人 |
NGK INSULATORS, LTD. |
发明人 |
KOTANI, WATARU;ONO, YOSHIRO;KUMAZAWA, KAZUHIKO, NGK TAKEDA-KITA-SHATAKU |
分类号 |
B01D39/20;B01D53/86;B01J21/16;B01J32/00;B01J35/04;C04B35/195;C04B38/00;C04B41/91;F02B3/06;(IPC1-7):C04B35/195 |
主分类号 |
B01D39/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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