Abstract Ion implantation has been used as a surface treatment technique on (Fe,Cr)Al-10%vol Al2O3 nanocomposite to enhance its surface properties. The process was carried out at 150 kV with an oxygen dose of 1 × 1018 ions/cm2 at room temperature. Microstructural characterization and phase composition were performed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) of the Al2O3 layer formed on the nanocomposite surface. Mechanical properties measurements including hardness, fracture toughness and coefficient of friction were studied. Nanoindentation tests demonstrated an increase of 50% in the hardness value after ion implantation. Fracture toughness increased to a value of 21.3 ± 0.9 MPa m1/2 after O2 ion implantation. Scratch test results revealed an improvement in tribological behavior of the oxygen implanted surface compared to the un-implanted substrate. Cyclic oxidation tests, at 1100 °C, revealed that oxygen ion implantation slightly improved high temperature oxidation resistance of the nanocomposite.

中文翻译：

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通过氧离子注入增强 (Fe,Cr)Al-Al2O3 纳米复合材料的表面性能

摘要 离子注入已被用作 (Fe,Cr)Al-10%vol Al2O3 纳米复合材料的表面处理技术，以提高其表面性能。该过程在 150 kV 下进行，氧气剂量为 1 × 1018 离子/cm2，室温下。通过扫描电子显微镜 (SEM)、透射电子显微镜 (TEM) 和 X 射线衍射 (XRD) 对形成在纳米复合材料表面上的 Al2O3 层进行微观结构表征和相组成。研究了机械性能测量，包括硬度、断裂韧性和摩擦系数。纳米压痕测试表明，离子注入后硬度值增加了 50%。O2 离子注入后断裂韧性增加到 21.3 ± 0.9 MPa m1/2 的值。划痕测试结果表明，与未注入的基板相比，注入氧的表面的摩擦学行为有所改善。1100 °C 的循环氧化测试表明，氧离子注入略微提高了纳米复合材料的高温抗氧化性。