直写式3D打印碳纤维/碳化硅陶瓷性能优化  

Direct Writing 3D Printing of Carbon Fiber/Silicon Carbide Ceramics Performance Optimization

作　　者：陈志刚 李雅芳[1] 王烨 陆晗婧 CHEN Zhigang;LI Yafang;WANG Ye;LU Hanjing(School of Mechanical and Energy Engineering,Shaoyang University,Shaoyang 422000;Efficient Power System Intelligent Manufacturing Key Laboratory of Hunan Province,Shaoyang University,Shaoyang 422000)

机构地区：[1]邵阳学院机械与能源工程学院,邵阳422000 [2]邵阳学院高效动力系统智能制造湖南省重点实验室,邵阳422000

出　　处：《现代制造技术与装备》2024年第2期4-7,12,共5页Modern Manufacturing Technology and Equipment

基　　金：2022年邵阳学院校级研究生科研创新项目“基于碳纤维/碳化硅陶瓷直写打印工艺优化”(CX2022SY034)。

摘　　要：在陶瓷制备过程中,烧结工艺至关重要,不仅影响陶瓷的显微组织结构,而且决定着陶瓷的力学性能。因此,为提升碳化硅/碳纤维陶瓷样品的性能,优化烧结工艺。采用直写式3D打印的方式,以碳纤维/碳化硅为打印材料,通过三同轴喷嘴挤出打印,以4种不同的烧结工艺烧结打印的碳纤维/碳化硅陶瓷样品,分析不同烧结工艺对碳纤维/碳化硅陶瓷样品,组织和性能的影响。结果表明:经烧结工艺3,即浸渍液聚碳硅烷与二甲苯的比例为2∶3、以10℃·min^(-1)的升温速率达到烧结温度,烧结后的碳纤维/碳化硅陶瓷样品的组织和性能最好,其致密度可达到95.5%,抗弯强度可达到156 MPa。In the process of ceramic preparation,the sintering process plays a crucial role,which not only affects the microstructure of ceramics,but also determines the mechanical properties of ceramics.Therefore,in order to improve the properties of silicon carbide/carbon fiber ceramic samples,the sintering process was optimized.Using direct writing 3D printing,carbon fiber/silicon carbide was used as printing material,and the printed carbon fiber/silicon carbide ceramic samples were sintered by four different sintering processes through triaxial nozzle extrusion printing.The effects of different sintering processes on carbon fiber/silicon carbide ceramic samples,microstructure and properties were analyzed.The results show that the microstructure and properties of the sintered carbon fiber/SIC ceramic sample are the best,the density can reach 95.5%,and the bending strength can reach 156 MPa after sintering process 3,that is,the ratio of the impregnated polycarbosilane to xylene is 2∶3,and the sintering temperature is reached at the temperature of 10℃·min^(-1).

关 键 词：直写式3D打印 碳纤维/碳化硅 烧结工艺 抗弯强度 致密度 

分 类 号：TQ174.1[化学工程—陶瓷工业] TP391.73[化学工程—硅酸盐工业]