The aggregation of low-dimensional nanofillers in the host ceramic matrix significantly discounted their reinforcing efficiency. Herein, employing two-dimensional graphene (G) and one-dimensional SiC nanowire (SiC_nw), WC-G-SiC_nw ceramic composites were prepared through spark plasma sintering. The effects of sintering temperature, soaking time and pressure on the mechanical properties of the WC-based composites were reported. The influence of graphene and SiC_nw on the densification, microstructure and mechanical properties of the ceramic composites were investigated. The experimental results demonstrated that excellent mechanical properties were achieved for WC-0.15 wt.% G–0.45 wt.% SiC_nw prepared through sintering at 1900 °C for 15 min holding time and 60 MPa pressure, with a hardness of 25.6 GPa, a flexural strength of 1499 MPa and a fracture toughness of 11.6 MPa·m^1/2. The toughening mechanisms were mainly the combination of G and SiC_nw induced crack deflection, bridging and pullout. This study provided a simple toughening method in developing high-performance ceramic composites.

低维纳米填料在主体陶瓷基体中的聚集显着降低了其增强效率。在此，采用二维石墨烯（G）和一维SiC纳米线（SiC _nw），通过放电等离子烧结制备了WC-G-SiC _nw陶瓷复合材料。报告了烧结温度、均热时间和压力对WC基复合材料机械性能的影响。研究了石墨烯和SiC_纳米线对陶瓷复合材料致密化、微观结构和力学性能的影响。实验结果表明，在1900 ℃、15 min、60 MPa压力下烧结制备的WC-0.15 wt.% G–0.45 wt.% SiC纳米线具有优异的力学性能_，硬度为25.6 GPa，弯曲强度为1499 MPa，断裂韧性为11.6 MPa·m ^1/2。增韧机制主要是G和SiC_纳米线诱导裂纹偏转、桥联和拔出的组合。这项研究为开发高性能陶瓷复合材料提供了一种简单的增韧方法。