Porous bodies and methods for their production

The invention relates to a porous body, in particular a filter body or insulating body, a method for producing a porous body and to a use of crystalline silicon nitride, wherein a porous base body made of carbon or a ceramic material is infiltrated with a chemical vapour infiltration (CVI), the base...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GALLE, JOHANNES, BRENNFLECK, KARL
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a porous body, in particular a filter body or insulating body, a method for producing a porous body and to a use of crystalline silicon nitride, wherein a porous base body made of carbon or a ceramic material is infiltrated with a chemical vapour infiltration (CVI), the base body is infiltrated with silicon nitride (Si3N4), in which at least one surface layer is formed from silicon nitride inside pores of the base body when infiltrating the base body.