Carbon fiber reinforced polyether ether ketone (CF/PEEK) composites are widely used as tribo‐materials in aerospace and automotive industry. To amplify the industrial utilization of extrusion‐based additive manufacturing fused deposition modeling (FDM) in fabricating CF/PEEK tribo‐composites, the composites' microstructure‐property relationship was studied with respect to carbon fiber content varied between 5 wt% and 30 wt%. It was revealed the incorporation of carbon fibers helped enhance the mechanical strength of PEEK greatly with an optimal content of 5 wt%, at which the composite material exhibited the highest crystallinity as well as the best mechanical performance. Tribological tests indicated that CF/PEEK composites were more suitable for high speed and heavy load conditions especially for 20 wt% CF/PEEK, which was associated with the establishment of high quality transfer films covered on counter steel surfaces. The present work provides a simple and low cost way of fabricating high performance PEEK composites used as tribo‐materials.This article is protected by copyright. All rights reserved.

中文翻译：

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挤压增材制造聚醚醚酮复合材料的微观结构和摩擦学行为研究

碳纤维增强聚醚醚酮（CF/PEEK）复合材料广泛用作航空航天和汽车工业中的摩擦材料。为了扩大基于挤出的增材制造熔融沉积成型 (FDM) 在制造 CF/PEEK 摩擦复合材料中的工业应用，研究了碳纤维含量在 5 wt% 至 30 wt% 之间的复合材料的微观结构-性能关系。结果表明，碳纤维的掺入有助于大大提高PEEK的机械强度，最佳含量为5 wt%，此时复合材料表现出最高的结晶度和最佳的机械性能。摩擦学测试表明，CF/PEEK 复合材料更适合高速和重载条件，尤其是 20 wt% CF/PEEK，这与覆盖在相对钢表面上的高质量转移膜的建立有关。目前的工作提供了一种简单且低成本的方法来制造用作摩擦材料的高性能 PEEK 复合材料。本文受版权保护。版权所有。