Basalt fiber (BF), a cheap and attractive fiber, was introduced into tungsten carbide (WC)-based diamond composite materials to study the effect of different mass fractions of BF on the structure and performance of WC-based diamond composite materials. The hardness, relative density and bending strength of the samples prepared by hot pressed sintering were tested, and the surface and fracture surface of the samples were analyzed by scanning electron microscope (SEM) and energy spectrometer (EDS). In addition, X-ray diffraction was used for phase analysis of the samples. The results show that adding proper amount of BF can improve the relative density, the bending strength and the holding force of the matrix material. Furthermore, the addition of proper amount of BF activates the sintering process which promotes the infiltration and diffusion of more binder elements on the diamond surface, improving the wettability of the matrix material to the diamond. When the mass fraction of BF is 1%, the composite material has the highest bending strength, and the holding force of the matrix to the diamond is found significantly improved. However, adding excessive BF is unfavorable to the mechanical properties of WC-based diamond composites. In summary, it is feasible and reasonable to add an appropriate amount of BF to replace part of the WC-based powder to prepare impregnated diamond drill bits.

玄武岩纤维（BF）是一种廉价且有吸引力的纤维，被引入碳化钨（WC）基金刚石复合材料中，以研究不同质量分数的BF对WC基金刚石复合材料结构和性能的影响。测试了热压烧结制备的样品的硬度、相对密度和弯曲强度，并通过扫描电子显微镜（SEM）和能谱仪（EDS）对样品的表面和断口进行了分析。此外，X射线衍射用于样品的相分析。结果表明，加入适量的BF可以提高基体材料的相对密度、弯曲强度和保持力。此外，适量BF的加入激活了烧结过程，促进了更多粘结剂元素在金刚石表面的渗透和扩散，提高了基体材料对金刚石的润湿性。当BF的质量分数为1%时，复合材料的抗弯强度最高，基体对金刚石的保持力显着提高。然而，添加过多的BF不利于WC基金刚石复合材料的力学性能。综上所述，加入适量的BF代替部分WC基粉末制备浸渍金刚石钻头是可行的、合理的。复合材料的抗弯强度最高，基体对金刚石的保持力显着提高。然而，添加过多的BF不利于WC基金刚石复合材料的力学性能。综上所述，加入适量的BF代替部分WC基粉末制备浸渍金刚石钻头是可行的、合理的。复合材料的抗弯强度最高，基体对金刚石的保持力显着提高。然而，添加过多的BF不利于WC基金刚石复合材料的力学性能。综上所述，加入适量的BF代替部分WC基粉末制备浸渍金刚石钻头是可行的、合理的。