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Method for preparing special-shaped silicon carbide ceramic by combining gel casting and reactive sintering
The invention belongs to the technical field of ceramic preparation, and particularly relates to a method for preparing special-shaped silicon carbide ceramic by combining gel casting and reactive sintering. The method comprises the following process steps: preparing premixed liquid, preparing ceramic slurry, degassing in vacuum, adding an initiator and a catalyst, casting and molding, and sintering the ceramic. According to the preparation method, low-toxicity methacrylamide is taken as a monomer, silicon carbide powder, carbon black and carbon fibers with different particle sizes are taken as carbon sources, an anisotropic ceramic part is prepared through gel casting, and then a ceramic product is prepared through reaction sintering; and the prepared ceramic product has the advantages of high performance, complex shape, near net size and the like, and meets the requirements of current high-end industrial development.
本发明属于陶瓷制备技术领域，尤其涉及一种凝胶注模成型结合反应烧结工艺制备异型碳化硅陶瓷的方法,包括以下工艺步骤：配制预混液→制备陶瓷浆料→真空除气→加入引发剂和催化剂→浇注成型→烧结陶瓷。本发明通过低毒的甲基丙烯酰胺为单体，不同粒径的碳化硅粉、炭黑和碳纤维作为碳源，通过凝胶注模成型制备异性陶瓷件，然后通过反应烧结制得陶瓷制品；制得的陶瓷制品具有高性能、形状复杂、近净尺寸等优点，满足目前高端工业发展的需求。
Method for preparing special-shaped silicon carbide ceramic by combining gel casting and reactive sintering
The invention belongs to the technical field of ceramic preparation, and particularly relates to a method for preparing special-shaped silicon carbide ceramic by combining gel casting and reactive sintering. The method comprises the following process steps: preparing premixed liquid, preparing ceramic slurry, degassing in vacuum, adding an initiator and a catalyst, casting and molding, and sintering the ceramic. According to the preparation method, low-toxicity methacrylamide is taken as a monomer, silicon carbide powder, carbon black and carbon fibers with different particle sizes are taken as carbon sources, an anisotropic ceramic part is prepared through gel casting, and then a ceramic product is prepared through reaction sintering; and the prepared ceramic product has the advantages of high performance, complex shape, near net size and the like, and meets the requirements of current high-end industrial development.
本发明属于陶瓷制备技术领域，尤其涉及一种凝胶注模成型结合反应烧结工艺制备异型碳化硅陶瓷的方法,包括以下工艺步骤：配制预混液→制备陶瓷浆料→真空除气→加入引发剂和催化剂→浇注成型→烧结陶瓷。本发明通过低毒的甲基丙烯酰胺为单体，不同粒径的碳化硅粉、炭黑和碳纤维作为碳源，通过凝胶注模成型制备异性陶瓷件，然后通过反应烧结制得陶瓷制品；制得的陶瓷制品具有高性能、形状复杂、近净尺寸等优点，满足目前高端工业发展的需求。
Method for preparing special-shaped silicon carbide ceramic by combining gel casting and reactive sintering
一种凝胶注模成型结合反应烧结工艺制备异型碳化硅陶瓷的方法
MA LI (author) / MA KUN (author) / GONG HONGYU (author) / GAO ZHIMIN (author) / GONG ZHIGANG (author) / SUN SHAN (author) / LI ZHITAO (author) / GONG XINGYU (author)
2021-08-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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