TiAlN, AlCrBN andTiAlN/AlCrBN coatings were deposited on cemented carbide by cathodic arc evaporation. SEM, TEM, XRD, nano-indentation test, Vickers indentation test, Rockwell indentation test and ball-on-disk tribological test were employed to characterize the microstructure, mechanical and tribological properties of the coatings. The results revealed that different from the fine columnar structure of TiAlN coating, AlCrBN coating exhibited an elliptical structure with grains sizes down to 5 nm.TiAlN/AlCrBN coating with approximately 24 nm thick modulation period demonstrated a polycrystalline structure consisting of fcc-(Al, Ti, Cr)N solid solution with (111) and (200) preferred orientation. The AlCrBN coating exhibited better wear resistance than TiAlN and TiAlN/AlCrBN coatings at room temperature due to its high fracture toughness and H/E. At room temperature, the wear mechanism of the three coatings was mainly abrasive wear. However, the main wear mechanism of TiAlN and TiAlN/AlCrBN coatings at 700 °C temperature transformed into obvious adhesive wear. TiAlN/AlCrBN coating exhibited excellent high-temperature oxidation resistance and stability due to the effect of interlayer interfaces, significantly reducing oxidation and adhesion phenomena under high-temperature wear conditions. Therefore, the main wear mechanism of TiAlN/AlCrBN coating still manifested as abrasive wear.

中文翻译：

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阴极电弧蒸发对 TiAlN、AlCrBN 和 TiAlN/AlCrBN 涂层的微观组织、力学和摩擦学性能的比较研究


TiAlN、AlCrBN 和 TiAlN/AlCrBN 涂层通过阴极电弧蒸发沉积在硬质合金上。采用 SEM、TEM、XRD、纳米压痕测试、维氏压痕测试、洛氏压痕测试和球盘摩擦学测试来表征涂层的微观组织、机械和摩擦学性能。结果表明，与 TiAlN 涂层的精细柱状结构不同，AlCrBN 涂层表现出晶粒尺寸低至 5 nm 的椭圆形结构。具有约 24 nm 厚调制周期的 TiAlN/AlCrBN 涂层展示了由 fcc-（Al， Ti， Cr）N 固溶体组成的多晶结构，具有 （111） 和 （200） 择优取向。由于其高断裂韧性和 H/E，AlCrBN 涂层在室温下表现出比 TiAlN 和 TiAlN/AlCrBN 涂层更好的耐磨性。在室温下，3种涂层的磨损机理主要是磨料磨损。然而，TiAlN 和 TiAlN/AlCrBN 涂层在 700 °C 温度下的主要磨损机制转变为明显的粘着磨损。由于层间界面的作用，TiAlN/AlCrBN 涂层表现出优异的高温抗氧化性和稳定性，显着减少了高温磨损条件下的氧化和粘附现象。因此，TiAlN/AlCrBN 涂层的主要磨损机制仍表现为磨粒磨损。