Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of multiphase silicon carbide ceramic and multiphase silicon carbide ceramic
The invention provides a preparation method of complex-phase silicon carbide ceramic and the complex-phase silicon carbide ceramic, silicon carbide, aluminum, hexagonal boron nitride, silicon nitride and a sintering aid are used as first raw materials, the first raw materials are subjected to ball-milling mixing treatment in deionized water, and a prefabricated mixed material is obtained; then taking the prefabricated mixture, an adhesive, a surfactant and a lubricant as second raw materials, and stirring and mixing the second raw materials to obtain a prefabricated material; then carrying out compression molding treatment on the prefabricated material to obtain a prefabricated green blank; further carrying out heating and glue discharging treatment on the prefabricated green body to obtain a green body; sintering the green body to obtain a multiphase silicon carbide ceramic blank; and finally, machining the complex-phase silicon carbide ceramic blank to obtain the complex-phase silicon carbide ceramic. The multiphase silicon carbide ceramic has the advantages of low density, high wear resistance, high thermal conductivity, strong impact toughness, strong friction reduction and self-lubrication, and higher thermal expansion coefficient than the existing silicon carbide ceramic.
本发明提供了一种复相碳化硅陶瓷的制备方法及复相碳化硅陶瓷，以碳化硅、铝、六方氮化硼、氮化硅以及烧结助剂为第一原料，并将第一原料在去离子水中进行球磨混合处理，得到预制混料；随后以预制混料、粘接剂、表面活性剂以及润滑剂为第二原料，并对第二原料进行搅拌混合处理得到预制料；然后对预制料进行压制成型处理得到预制生坯料；进一步对预制生坯料进行加热排胶处理得到生坯；并对生坯进行烧结处理得到复相碳化硅陶瓷毛坯件；最后对复相碳化硅陶瓷毛坯件进行机加工处理得到复相碳化硅陶瓷。使得该复相碳化硅陶瓷同时具备低密度、高耐磨、高热导率、抗冲击韧性强、减摩擦自润滑性强以及热膨胀系数较现有碳化硅陶瓷高的优点。
Preparation method of multiphase silicon carbide ceramic and multiphase silicon carbide ceramic
The invention provides a preparation method of complex-phase silicon carbide ceramic and the complex-phase silicon carbide ceramic, silicon carbide, aluminum, hexagonal boron nitride, silicon nitride and a sintering aid are used as first raw materials, the first raw materials are subjected to ball-milling mixing treatment in deionized water, and a prefabricated mixed material is obtained; then taking the prefabricated mixture, an adhesive, a surfactant and a lubricant as second raw materials, and stirring and mixing the second raw materials to obtain a prefabricated material; then carrying out compression molding treatment on the prefabricated material to obtain a prefabricated green blank; further carrying out heating and glue discharging treatment on the prefabricated green body to obtain a green body; sintering the green body to obtain a multiphase silicon carbide ceramic blank; and finally, machining the complex-phase silicon carbide ceramic blank to obtain the complex-phase silicon carbide ceramic. The multiphase silicon carbide ceramic has the advantages of low density, high wear resistance, high thermal conductivity, strong impact toughness, strong friction reduction and self-lubrication, and higher thermal expansion coefficient than the existing silicon carbide ceramic.
本发明提供了一种复相碳化硅陶瓷的制备方法及复相碳化硅陶瓷，以碳化硅、铝、六方氮化硼、氮化硅以及烧结助剂为第一原料，并将第一原料在去离子水中进行球磨混合处理，得到预制混料；随后以预制混料、粘接剂、表面活性剂以及润滑剂为第二原料，并对第二原料进行搅拌混合处理得到预制料；然后对预制料进行压制成型处理得到预制生坯料；进一步对预制生坯料进行加热排胶处理得到生坯；并对生坯进行烧结处理得到复相碳化硅陶瓷毛坯件；最后对复相碳化硅陶瓷毛坯件进行机加工处理得到复相碳化硅陶瓷。使得该复相碳化硅陶瓷同时具备低密度、高耐磨、高热导率、抗冲击韧性强、减摩擦自润滑性强以及热膨胀系数较现有碳化硅陶瓷高的优点。
Preparation method of multiphase silicon carbide ceramic and multiphase silicon carbide ceramic
一种复相碳化硅陶瓷的制备方法及复相碳化硅陶瓷
LI YELIN (Autor:in) / SHI ZHENGLIANG (Autor:in) / GUAN YUNQI (Autor:in) / LIU HAOXIAN (Autor:in) / SHEN TING (Autor:in) / HU WENXIANG (Autor:in)
20.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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