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Porous ceramic structure

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专利汇可以提供Porous ceramic structure专利检索,专利查询,专利分析的服务。并且PURPOSE: To maintain superior characteristics as a filter medium for molten metal by coating the grid surface of ceramic porous material aggregate with a specific weight of an alumina active layer and specifying microsurface areas and voids.
CONSTITUTION: The grid surfaces 2a of the aggregate 2 of a ceramic structure 1 of three-dimensional network structure of 0.3W0.6 bulk densities are coated thereon with 3W40% active alumina based on the weight of the aggregate 2 and 0.5W10% flux for aluminum and these are dried and calcined, whereby an active layer 3 is coated. The porous ceramic structure 1 is so constituted that the mean diameters of the internal open cells 4 after the formation of said active layer 3 become 0.3W 5mm, the pressure losses in passing 1cm thickness at 1m wind velocity per second become 0.3W30mm water columns, microsurface areas become 10m
2 /g and voids 75W95%. Thereby, the quality sufficiently withstanding molten metal of high temperatures as a filter media for said molten metal is achieved.
COPYRIGHT: (C)1981,JPO&Japio,下面是Porous ceramic structure专利的具体信息内容。

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