Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Preparation method of lamellar silicon carbide/zirconium carbide ultrahigh-temperature ceramic
The invention belongs to the technical field of preparation of an ultrahigh-temperature ceramic, and particularly relates to a preparation method of a lamellar silicon carbide/zirconium carbide ultrahigh-temperature ceramic. The preparation method comprises the following steps of: preparing a silicon carbide tape-casting sheet and a zirconium carbide tape-casting sheet by adopting a tape-casting method; then alternately stacking the silicon carbide tape-casting sheet and the zirconium carbide tape-casting sheet; then carrying out glue discharge and vacuum sintering. According to the preparation method, the usage amounts of polymethyl methacrylate, polyethylene glycol, ethanol and n-octyl alcohol are limited, so that a prepared tape-casting sheet is smooth in surface and generates no bubble; the glue discharge, sintering temperature, temperature increase speed and sintering pressure are limited in regulation and control, so that the prepared lamellar ultrahigh-temperature ceramic has the advantages of clearness in interface, moderation in strength and good ceramic compactness and is enhanced in fracture toughness by changing a crack propagation path.
Preparation method of lamellar silicon carbide/zirconium carbide ultrahigh-temperature ceramic
The invention belongs to the technical field of preparation of an ultrahigh-temperature ceramic, and particularly relates to a preparation method of a lamellar silicon carbide/zirconium carbide ultrahigh-temperature ceramic. The preparation method comprises the following steps of: preparing a silicon carbide tape-casting sheet and a zirconium carbide tape-casting sheet by adopting a tape-casting method; then alternately stacking the silicon carbide tape-casting sheet and the zirconium carbide tape-casting sheet; then carrying out glue discharge and vacuum sintering. According to the preparation method, the usage amounts of polymethyl methacrylate, polyethylene glycol, ethanol and n-octyl alcohol are limited, so that a prepared tape-casting sheet is smooth in surface and generates no bubble; the glue discharge, sintering temperature, temperature increase speed and sintering pressure are limited in regulation and control, so that the prepared lamellar ultrahigh-temperature ceramic has the advantages of clearness in interface, moderation in strength and good ceramic compactness and is enhanced in fracture toughness by changing a crack propagation path.
Preparation method of lamellar silicon carbide/zirconium carbide ultrahigh-temperature ceramic
LI YUANYUAN (Autor:in) / LI QINGGANG (Autor:in) / WANG ZHI (Autor:in) / SHI GUOPU (Autor:in) / WU CHAO (Autor:in) / LIU MEIJIA (Autor:in)
01.04.2015
Patent
Elektronische Ressource
Englisch
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