Abstract In this work, the atomization process was utilized in order to fabricate significantly high content of diamond powders on the surface of spherical magnetic abrasive powder (MAP). The impact of the different feed rates of diamond powder on the surface morphology, size distribution and magnetic properties of atomized MAPs were investigated. The results showed that a feed rate at 2 kg/min atomized MAPs were obtained with good spherical morphology and uniformly embedded fine diamond powders on the surface of MAP, confirmed the compositional contribution in the iron matrix. As per the size distribution, the refinement of MAPs improved the utilization ratio of the ideal size (100-200 μm) of atomized MAPs and resulted in dense distribution. The saturated magnetization and coercivity were 117.394 emu/g and 3.605 Oe, respectively. Importantly, the rapid cool solidification process of MAPs solved the weak adhesion behavior of diamond powders in the iron matrix. Additionally, the formed stiff junction between the diamond powders and the iron matrix provided service life of 60 mins for MAPs. The dense cutting edges of the embedded diamond powders and uniform indentation depth of spherical MAPs reduced the surface roughness from 0.432 μm to 0.046 μm of Ti-6Al-4 V.

中文翻译：

---

雾化法制备球形金刚石磁性磨料粉末及其表征

摘要 在这项工作中，为了在球形磁性磨料粉 (MAP) 的表面上制造高含量的金刚石粉，利用雾化工艺。研究了金刚石粉末的不同进料速率对雾化MAPs的表面形貌、尺寸分布和磁性能的影响。结果表明，进料速率为 2 kg/min 的雾化 MAP 具有良好的球形形态，并且在 MAP 表面均匀嵌入了细小的金刚石粉末，证实了铁基体中的成分贡献。从尺寸分布来看，MAPs的细化提高了雾化MAPs的理想尺寸（100-200μm）的利用率，并导致分布密集。饱和磁化强度和矫顽力分别为 117.394 emu/g 和 3.605 Oe。重要的，MAPs 的快速冷却凝固过程解决了金刚石粉末在铁基体中的弱粘附行为。此外，金刚石粉末和铁基体之间形成的刚性连接为 MAP 提供了 60 分钟的使用寿命。嵌入金刚石粉末的致密切削刃和球形 MAP 的均匀压痕深度将 Ti-6Al-4 V 的表面粗糙度从 0.432 μm 降低到 0.046 μm。