Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microlamellar structure reinforced silicon carbide ceramic composite material and preparation method thereof
The invention relates to a microlamellar structure reinforced silicon carbide ceramic matrix composite material and a preparation method thereof, according to the method, silicon carbide is used as a matrix, silicon carbide whiskers and/or graphene sheets are used as reinforcements, a dispersant and a sintering aid are added, and the densification of the silicon carbide ceramic composite material is realized at a lower temperature through hot pressing and spark plasma sintering. The specific preparation process comprises the following steps: adding a coupling agent into a microlamellar substance, carrying out ultrasonic dispersion, carrying out ball milling on a dispersion liquid, silicon carbide powder and a sintering aid, and carrying out rubber removal treatment on the ball-milled powder to obtain composite material powder; hot pressed sintering or spark plasma sintering is adopted, and high-pressure instantaneous liquid phase sintering is adopted in a vacuum environment to obtain the high-performance silicon carbide composite material. According to the method, uniform dispersion of a microlamellar structure in a ceramic matrix is achieved by adding a dispersing agent and the like, densification of the silicon carbide ceramic composite material is achieved at a low temperature through high-pressure instantaneous liquid phase sintering by adding a sintering aid and high pressure, and the silicon carbide ceramic composite material has good mechanical properties.
本发明涉及一种微片层结构增强碳化硅陶瓷基复合材料及其制备方法，该方法以碳化硅为基体，碳化硅晶须和/或石墨烯片为增强体，添加分散剂和烧结助剂，通过热压和放电等离子烧结在较低温度下实现了碳化硅陶瓷复合材料的致密化。具体制备过程：将微片层物质加入偶联剂超声分散，将分散液与碳化硅粉体、烧结助剂进行球磨，将球磨后的粉体进行排胶处理获得复合材料粉体；采用热压烧结或放电等离子烧结，在真空环境采用高压瞬时液相烧结得到高性能碳化硅复合材料。该方法通过加入分散剂等实现了微片层结构在陶瓷基体中的均匀分散，加入的烧结助剂和高的压力通过高压瞬时液相烧结，在较低温度下实现碳化硅陶瓷复合材料致密化，且具备良好的力学性能。
Microlamellar structure reinforced silicon carbide ceramic composite material and preparation method thereof
The invention relates to a microlamellar structure reinforced silicon carbide ceramic matrix composite material and a preparation method thereof, according to the method, silicon carbide is used as a matrix, silicon carbide whiskers and/or graphene sheets are used as reinforcements, a dispersant and a sintering aid are added, and the densification of the silicon carbide ceramic composite material is realized at a lower temperature through hot pressing and spark plasma sintering. The specific preparation process comprises the following steps: adding a coupling agent into a microlamellar substance, carrying out ultrasonic dispersion, carrying out ball milling on a dispersion liquid, silicon carbide powder and a sintering aid, and carrying out rubber removal treatment on the ball-milled powder to obtain composite material powder; hot pressed sintering or spark plasma sintering is adopted, and high-pressure instantaneous liquid phase sintering is adopted in a vacuum environment to obtain the high-performance silicon carbide composite material. According to the method, uniform dispersion of a microlamellar structure in a ceramic matrix is achieved by adding a dispersing agent and the like, densification of the silicon carbide ceramic composite material is achieved at a low temperature through high-pressure instantaneous liquid phase sintering by adding a sintering aid and high pressure, and the silicon carbide ceramic composite material has good mechanical properties.
本发明涉及一种微片层结构增强碳化硅陶瓷基复合材料及其制备方法，该方法以碳化硅为基体，碳化硅晶须和/或石墨烯片为增强体，添加分散剂和烧结助剂，通过热压和放电等离子烧结在较低温度下实现了碳化硅陶瓷复合材料的致密化。具体制备过程：将微片层物质加入偶联剂超声分散，将分散液与碳化硅粉体、烧结助剂进行球磨，将球磨后的粉体进行排胶处理获得复合材料粉体；采用热压烧结或放电等离子烧结，在真空环境采用高压瞬时液相烧结得到高性能碳化硅复合材料。该方法通过加入分散剂等实现了微片层结构在陶瓷基体中的均匀分散，加入的烧结助剂和高的压力通过高压瞬时液相烧结，在较低温度下实现碳化硅陶瓷复合材料致密化，且具备良好的力学性能。
Microlamellar structure reinforced silicon carbide ceramic composite material and preparation method thereof
一种微片层结构增强碳化硅陶瓷复合材料及其制备方法
XU HAIYUE (Autor:in) / JIAO JIAN (Autor:in) / YANG JINHUA (Autor:in) / YANG RUI (Autor:in) / LIU HU (Autor:in)
22.08.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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