The production of ceramic matrix composites (CMC) based on C/C‐SiC is still very cost‐intensive and therefore only economical for a few applications. The fabrication of the preforms involves many costs that need to be reduced. In this work, the shaping of the CFRP‐preforms is realized by thermoset injection molding, which enables large‐scale production. The polymeric matrix used is a multi‐component matrix consisting of novolak resin, curing agent and lubricant. Six millimeter chopped carbon fiber with a proportion of 50 wt.% were used as a reinforcement. These ingredients are processed by an industrial equipment for compounding and injection molding in order to manufacture a CFRP demonstrator representing a brake disc. Test specimens are cut out of the demonstrator in different directions in order to investigate influences of flow direction and weld lines on microstructural and mechanical properties. Afterward, the CFRP samples were converted to C/C‐SiC composites by the liquid silicon infiltration process. The article addresses the flow behavior of the compound during the injection molding and the building of the weld lines in the demonstrator. In addition, results of the directional dependence of the microstructural and mechanical properties within the fabricated disc in the different production steps are presented.

中文翻译：

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基于IM-LSI的热固性C / C-SiC：流向和熔接线对组织和力学性能的影响

基于C / C-SiC的陶瓷基复合材料（CMC）的生产仍然非常昂贵，因此仅在少数应用中具有经济性。瓶坯的制造涉及许多需要降低的成本。在这项工作中，通过热固性注塑成型实现了CFRP瓶坯的成型，从而可以进行大规模生产。所使用的聚合物基质是由酚醛清漆树脂，固化剂和润滑剂组成的多组分基质。使用比例为50％（重量）的六毫米短切碳纤维作为增强材料。这些成分由工业设备进行处理以进行配混和注塑成型，以制造代表制动盘的CFRP演示器。从演示器的不同方向切出试样，以研究流动方向和熔合线对显微组织和机械性能的影响。之后，通过液体硅渗透过程将CFRP样品转化为C / C-SiC复合材料。本文介绍了在注塑成型过程中化合物的流动行为以及在演示器中建立熔接线的过程。另外，给出了在不同生产步骤中所制造的盘内的微观结构和机械性能的方向依赖性的结果。本文介绍了在注塑成型过程中化合物的流动行为以及在演示器中建立熔接线的过程。另外，给出了在不同生产步骤中所制造的盘内的微观结构和机械性能的方向依赖性的结果。本文介绍了在注塑成型过程中化合物的流动行为以及在演示器中建立熔接线的过程。另外，给出了在不同生产步骤中所制造的盘内的微观结构和机械性能的方向依赖性的结果。