Abstract A series of AlTiCN coatings with different carbon contents (0–0.7 at.%) were deposited on YG10 (WC + 10 wt.% Co) cemented carbide by cathodic arc-evaporation of Ti-Al/Ti-Al-C targets in a mixture of Ar and N2 gases. The influence of carbon doping on microstructure, mechanical properties, wear resistance and cutting performance was systematically investigated by comparing carbon-free coating and coatings with different carbon contents. The microstructure of the coatings has been changed significantly with the addition of C, and the amorphous domains appear when the doping amount of C is among 0.2–0.5 at.%. Instead of forming bonds with other elements in the coating, carbon only acts as a growth inhibitor. When the carbon content is 0.2 at.%, the hardness of the coating significantly decreased, but changes a little with the carbon content continue to rise. The addition of C significantly improves the wear resistance of the coating, which is mainly attributed to the transformation of the crystalline state and the formation of the dense Al2O3 oxide layer. Among them, the coating with a carbon content of 0.2 at.% has both excellent wear resistance and cutting performance.

中文翻译：

---

碳掺杂对AlTiCN涂层组织、力学性能、耐磨性和切削性能的影响

摘要 通过阴极电弧蒸发 Ti-Al/Ti-Al-C 靶材，在 YG10 (WC + 10 wt.% Co) 硬质合金上沉积了一系列不同碳含量 (0-0.7 at.%) 的 AlTiCN 涂层。 Ar 和 N2 气体的混合物。通过比较无碳涂层和不同碳含量的涂层，系统地研究了碳掺杂对微观结构、力学性能、耐磨性和切削性能的影响。随着C的加入，涂层的微观结构发生了显着变化，当C的掺杂量在0.2-0.5a​​t.%之间时，会出现非晶畴。碳不会与涂层中的其他元素形成键，而是仅用作生长抑制剂。当含碳量为0.2at.%时，涂层硬度显着下降，但随着含碳量的不断上升而略有变化。C的加入显着提高了涂层的耐磨性，这主要归因于晶态的转变和致密的Al2O3氧化层的形成。其中，含碳量为0.2at.%的涂层兼具优异的耐磨性和切削性能。