A process combining electrophoretic deposition (EPD) with hot pressing (HP) was developed to fabricate continuous carbon fiber-reinforced ZrB₂-based composites (C_f/ZrB₂-based composites). ZrB₂-based ultra-high temperature ceramic (UHTC) particles were uniformly pre-coated on continuous carbon fibers via EPD. Then, the UHTC-coated carbon fibers were stacked and hot pressed to prepare the C_f/ZrB₂-based composites. Microstructure observations revealed that almost no micro-pores were found in the inter-bundle and intra-bundle regions of fibers after HP. The flexural strength, fracture toughness and the work of fracture of the C_f/ZrB₂-based composite were measured as 199 ± 26 MPa, 6.71 ± 1.29 MPa·m^1/2, and 754 ± 58 J/m², respectively. Based on the observations of non-brittle fracture behavior, fractured morphology and crack propagation, the enhanced fracture properties were mainly attributed to the multiple toughening mechanisms, such as fiber pull-out, fiber bridging, crack deflection and branching along the interfaces.

开发了一种将电泳沉积（EPD）与热压（HP）结合的工艺，以制造连续的碳纤维增强ZrB ₂基复合材料（C _f / ZrB ₂基复合材料）。基于ZrB ₂的超高温陶瓷（UHTC）颗粒通过EPD均匀地预涂在连续碳纤维上。然后，将涂覆有UHTC的碳纤维堆叠并热压以制备基于C _f / ZrB ₂的复合材料。微观结构观察表明，HP后纤维的束间和束内区域几乎没有发现微孔。C _f / ZrB ₂的抗折强度，断裂韧性和断裂功基复合材料的测量值分别为199±26 MPa，6.71±1.29 MPa·m ^1/2和754±58 J / m ²。基于非脆性断裂行为，断裂形态和裂纹扩展的观察结果，增强的断裂性能主要归因于多种增韧机制，例如纤维拉出，纤维桥接，裂纹偏转和沿界面的分支。