Abstract The biomachining properties of five pure metals (Cu, Co, Fe, Sn, and W) and four sintered components made from binary powder mixtures (Cu-Co, Cu-Fe, Cu-Sn, and Cu-W) were synthetically studied under the same conditions. The material removal rate (MRR) in the machining process was recorded. The surface roughness (Sa), topography, and element distribution of the surface were compared before and after machining. The cross-sections of machined surfaces from nine samples were also observed. The electrochemical corrosion resistance of the five pure metals was evaluated by potentiodynamic polarization curves. The experimental results showed that the MRR of all samples presented good linear behavior in the machining process with different slopes. Sa of all samples increased from below 0.1 μm to 0.3–5.4 μm after machining. Material removal mechanisms involved in the biomachining process were also explored. The MRR of pure metals was mainly affected by the electrochemical corrosion resistance of the material. However, the generation of a reaction layer could reduce the MRR for the pure Co. The MRR of sintered components was affected by the reaction processes between the binary powder mixtures in the sintering process. Three material removal mechanisms were proposed for the sintered components corresponding to the different reaction processes.

中文翻译：

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微生物对各种金属的生物加工性能

摘要 综合研究了五种纯金属（Cu、Co、Fe、Sn 和 W）和四种由二元粉末混合物（Cu-Co、Cu-Fe、Cu-Sn 和 Cu-W）制成的烧结部件的生物加工性能。在相同条件下。记录加工过程中的材料去除率 (MRR)。比较加工前后表面的表面粗糙度（Sa）、形貌和元素分布。还观察了来自九个样品的加工表面的横截面。通过动电位极化曲线评估了五种纯金属的电化学耐腐蚀性能。实验结果表明，所有样品的MRR在不同斜率的加工过程中都表现出良好的线性行为。加工后所有样品的 Sa 从低于 0.1 μm 增加到 0.3-5.4 μm。还探讨了生物加工过程中涉及的材料去除机制。纯金属的 MRR 主要受材料的电化学耐腐蚀性能的影响。然而，反应层的产生会降低纯 Co 的 MRR。烧结部件的 MRR 受烧结过程中二元粉末混合物之间的反应过程的影响。针对不同反应过程的烧结部件提出了三种材料去除机制。烧结部件的 MRR 受烧结过程中二元粉末混合物之间的反应过程的影响。针对不同反应过程的烧结部件提出了三种材料去除机制。烧结部件的 MRR 受烧结过程中二元粉末混合物之间的反应过程的影响。针对不同反应过程的烧结部件提出了三种材料去除机制。