With FeCu₃₀ pre-alloy powder as the main component of the bond, a new type of nano‑vanadium nitride (VN) additive with different concentrations was introduced into Fe-Cu-based diamond composites to investigate the effect of nano-VN on the microstructure and properties of Fe-Cu-based diamond composites. The hardness, relative density, bending strength and wear loss weight of the fabricated specimens were tested, and then the fracture surfaces and worn surfaces of those specimens were analyzed using scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). The results show that the Fe-Cu-based diamond composites with nano-VN addition exhibited an improvement in the mechanical properties, plasticity and wear resistance, which can be attributed to the dispersion strengthening and grain refinement caused by nano-VN. And the nano-VN can also activate sintering, which can significantly improve the wettability of the binder to diamonds, resulting in more binder elements wetting and diffusion on the diamond surface during the sintering process. Besides, the diamond composites showed the best properties with the addition of 2% nano-VN. That is, the bending strength and the HRB hardness of the diamond composites increased by 25% and 20%, respectively, and the wear resistance of the matrix and holding force coefficient of the matrix to diamond were improved significantly. But an excessive amount of nano-VN was detrimental to the mechanical properties of Fe-Cu-based diamond composites.

含FeCu ₃₀预合金粉末作为键合的主要成分，将一种不同浓度的新型纳米氮化钒（VN）添加剂引入铁-铜基金刚石复合材料中，以研究纳米VN对显微组织和性能的影响铁铜基金刚石复合材料的制造。测试了所制备样品的硬度，相对密度，弯曲强度和磨损损失重量，然后使用扫描电子显微镜（SEM）和能量色散谱（EDS）分析了这些样品的断裂表面和磨损表面。结果表明，添加纳米VN的Fe-Cu基金刚石复合材料的力学性能，塑性和耐磨性均得到改善，这归因于纳米VN引起的分散强化和晶粒细化。纳米VN还可以激活烧结，从而可以显着提高粘合剂对金刚石的润湿性，从而在烧结过程中使更多的粘合剂元素在金刚石表面润湿和扩散。此外，添加2％纳米VN时，金刚石复合材料表现出最佳性能。即，金刚石复合材料的弯曲强度和HRB硬度分别提高了25％和20％，并且基体的耐磨性和基体对金刚石的保持力系数显着提高。但是过量的纳米VN不利于Fe-Cu基金刚石复合材料的机械性能。导致在烧结过程中更多的粘结剂元素在金刚石表面润湿和扩散。此外，添加2％纳米VN时，金刚石复合材料表现出最佳性能。即，金刚石复合材料的弯曲强度和HRB硬度分别提高了25％和20％，并且基体的耐磨性和基体对金刚石的保持力系数显着提高。但是过量的纳米VN不利于Fe-Cu基金刚石复合材料的机械性能。导致在烧结过程中更多的粘结剂元素在金刚石表面润湿和扩散。此外，添加2％纳米VN时，金刚石复合材料表现出最佳性能。即，金刚石复合材料的弯曲强度和HRB硬度分别提高了25％和20％，并且基体的耐磨性和基体对金刚石的保持力系数显着提高。但是过量的纳米VN不利于Fe-Cu基金刚石复合材料的机械性能。大大提高了基体的耐磨性和基体对金刚石的保持力系数。但是过量的纳米VN不利于Fe-Cu基金刚石复合材料的机械性能。大大提高了基体的耐磨性和基体对金刚石的保持力系数。但是过量的纳米VN不利于Fe-Cu基金刚石复合材料的机械性能。