ABSTRACT

Carbide-derived carbon (CDC) was previously proposed as a surface modification method for hip implant applications since it showed excellent tribocorrosion performance under open-circuit potential (OCP) conditions. Nonetheless, a systematic evaluation of the CDC’s tribocorrosion properties was still missing. Therefore, our objective is to test CDC’s tribocorrosion performance under various electrochemical conditions and to identify the synergism between wear and corrosion. Based on the findings, the variations in OCP for CDC (0.626 mV) are smaller than Ti6Al4V (1.91 mV), and CDC showed lower induced current than T6Al4V for all potentials, suggesting CDC is more stable than Ti6Al4V under tribocorrosive conditions. Eventually, the weight loss of Ti6Al4V (50.662 ± 5.19 μg) was found to be significantly higher than that of CDC (4.965 ± 5.19 μg), which agrees with the electrochemical results. In summary, CDC showed better tribocorrosion performance than Ti6Al4V and was determined as an Antagonism regime.

摘要

碳化物衍生碳（CDC）先前被提议作为髋关节植入物应用的表面改性方法，因为它在开路电位（OCP）条件下表现出优异的摩擦腐蚀性能。尽管如此，仍然缺乏对 CDC 摩擦腐蚀特性的系统评估。因此，我们的目标是测试 CDC 在各种电化学条件下的摩擦腐蚀性能，并确定磨损和腐蚀之间的协同作用。根据研究结果，CDC 的 OCP 变化 (0.626 mV) 小于 Ti6Al4V (1.91 mV)，并且 CDC 在所有电势下都表现出比 T6Al4V 更低的感应电流，表明 CDC 在摩擦腐蚀条件下比 Ti6Al4V 更稳定。最终发现Ti6Al4V的失重（50.662±5.19μg）明显高于CDC（4.965±5.19μg），这与电化学结果一致。总之，CDC 显示出比 Ti6Al4V 更好的摩擦腐蚀性能，并被确定为拮抗机制。