The influence of Ag content on the morphology, structure, hardness (H) and reduced Young's modulus (E), thermal stability, and oxidation resistance of TiAlSiN(Ag) coatings is investigated. The coatings were produced by DC reactive magnetron sputtering, with increasing Ag contents from 0 up to 15.9 at. %. All coatings exhibit a fcc type structure. The coating with 1.5 at.% Ag content displays the highest H and E values as a result of the coating densification and the grain refinement caused by the co-deposition of immiscible phases. Further Ag concentration degrades the H and E values of the coatings due to the incorporation of a softer Ag phase in the structure. Annealing at 800 °C in protective atmosphere for 2 h enhances the coatings crystallinity, with small increments in the H and E values. The dynamic thermal gravimetric oxidation curves reveal that Ag additions do not affect the starting point of oxidation of the coatings (~990 °C). However, it enhances their oxidation resistance. The improved oxidation resistance of the coatings with Ag incorporation is caused by the diffusion of Ag through the oxide scale to the surface, which modifies the composition of the Ti-Al-O layer, producing a more protective Al rich layer.

研究了Ag含量对TiAlSiN(Ag)涂层的形貌、结构、硬度(H)和杨氏模量(E)、热稳定性和抗氧化性的影响。涂层是通过直流反应磁控溅射产生的，Ag 含量从 0 增加到 15.9 at。%。所有涂层均呈现 fcc 型结构。由于不混溶相的共沉积导致涂层致密化和晶粒细化，Ag 含量为 1.5 at.% 的涂层显示出最高的 H 和 E 值。由于在结构中掺入了较软的 Ag 相，进一步的 Ag 浓度会降低涂层的 H 和 E 值。在保护气氛中在 800 °C 下退火 2 小时提高了涂层的结晶度，H 和 E 值的增量很小。动态热重氧化曲线表明，添加银不会影响涂层的氧化起点（~990°C）。然而，它增强了它们的抗氧化性。掺入 Ag 的涂层的抗氧化性提高是由 Ag 通过氧化皮扩散到表面引起的，这改变了 Ti-Al-O 层的成分，产生了更具保护性的富铝层。