In situ selective carbothermic reactions and vacuum sintering were used to prepare iron-based friction material directly from vanadium-bearing titanomagnetite concentrates. Effects of phosphorus addition (0.05–0.20 wt.%) on the microstructure and properties of iron-based friction material were investigated. The results show that the addition of phosphorus improves the microstructure and properties of the material significantly. When phosphorus addition increases to 0.15 wt.%, the sintering densification is promoted and the number of lamellar pearlites increases. Therefore, the relative density, hardness and tribological properties of the material are greatly enhanced. Particularly, the friction coefficient decreases from 0.58 to 0.43, and the wear rate reduces from 1.829 × 10^–7 to 0.694 × 10^–7 cm³ J⁻¹. The dominant wear mechanism of the material changes from severe abrasive wear to mild oxidation wear accordingly. However, when phosphorus addition exceeds 0.15 wt.%, the matrix continuity and tribological properties of the material are deteriorated. Comprehensively, the optimal addition of phosphorus in the iron-based friction material is 0.15 wt.%.

原位选择性碳热反应和真空烧结被用来直接从含钒的钛磁铁矿精矿中制备铁基摩擦材料。研究了添加磷（0.05–0.20 wt。％）对铁基摩擦材料的组织和性能的影响。结果表明，磷的添加显着改善了材料的微观结构和性能。当磷的添加量增加到0.15重量％时，烧结致密化被促进并且层状珠光体的数量增加。因此，大大提高了材料的相对密度，硬度和摩擦学性能。特别是，摩擦系数从0.58降低到0.43，磨损率从1.829×10 ^–7降低到0.694×10 ^–7cm ³  J ^-1。材料的主要磨损机理相应地从严重的磨料磨损变为轻度的氧化磨损。但是，当磷的添加量超过0.15重量％时，材料的基体连续性和摩擦学性能变差。总体而言，铁基摩擦材料中磷的最佳添加量为0.15 wt。％。