C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
25/125
C03B 19/06 (2006.01) B01J 37/00 (2006.01) B01J 37/08 (2006.01) B28B 1/24 (2006.01) B28B 1/26 (2006.01) B28B 3/02 (2006.01) B28B 3/20 (2006.01) C03B 32/02 (2006.01) C03C 11/00 (2006.01) C04B 38/00 (2006.01) C04B 38/04 (2006.01) C04B 38/06 (2006.01)
Patent
CA 1325101
Abstract A process for manufacturing open porous sintered bodies with a large open pore volume and defined pore diameters and which at least predominantly consist of glass-cera- mics. They are obtained by sintering a mixture of sinte- rable powder and an inorganic soluble salt with defined grade of grain, the melting point of which is above the densification temperature of the sinterable powder. For the formation of a molded body the mixture of sinterable powder and inorganic salt is submitted to a molding process. The molded body is sintered in a sintering process and the soluble salt being contained in the molded body is lixiviated. As a main constituent the sinterable powder contains a pulverized crystallizable glass powder. The sintering process is performed in such a way that the crystal phases being produced during the crystallization of the crystallizable glass, and therefo- re the material properties, too, are controlled by the guidance of the sintering process as well as by the ion exchange taking place between the sinterable powder and the inorganic salt and which is controlled by their composition. Afterwards, the sintered body is transformed to the final glass-ceramic texture.
577567
Kiefer Werner
Siebers Friedrich
Sura Maria
Gowling Lafleur Henderson Llp
Schott Glaswerke
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