工艺与制造英文2022被引 27
连续纤维丝束自动铺放聚合物基体、热解及反应性硅熔体浸渗制备C/C-SiC陶瓷基复合材料的增材制造
Additive Manufacturing of C/C-SiC Ceramic Matrix Composites by Automated Fiber Placement of Continuous Fiber Tow in Polymer with Pyrolysis and Reactive Silicon Melt Infiltration
Corson L. Cramer, Bola Yoon, Michael J. Lance, Ercan Cakmak, Quinn Campbell, David J. Mitchell · Oak Ridge National Laboratory
摘要整理
基于C/C-SiC体系开发了一种陶瓷基复合材料增材制造工艺。采用连续碳纤维在聚醚醚酮（PEEK）基体中的自动铺放技术，将碳纤维固结成打印预成型体。经过热解处理将聚合物基体转化为多孔碳，随后通过反应性硅熔体浸渗引入硅元素，将部分碳基体转化为碳化硅。在工艺各阶段对密度和微观结构进行了表征，并测定了力学性能。所制备的C/C-SiC复合材料孔隙率为10%~20%，特征弯曲强度为234.91 MPa，Weibull模数为3.21。复合材料表现出显著的位移破坏特征，展现出良好的韧性。
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