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<p>AlTiCrSiN coating was developed with low content co-addition of Cr and Si elements in AlTiN coating. The influence of the co-addition of Cr and Si elements on the structure, hardness, toughness and wear resistance of the AlTiN coating materials was examined by scanning electron microscopy, X-ray diffraction, indentation tests and ball-on-disk friction-wear test. The results showed that the AlTiN coating mainly exhibited a fcc-AlTiN solid solution phase with (111) preferred orientation. Co-addition of Cr and Si elements in AlTiN coating changed the preferred orientation from (111) to (200). The AlTiN coating exhibited columnar structure, while the AlTiCrSiN coating exhibited a dense and featureless structure. Co-addition of Cr and Si elements improved the hardness and <i>H</i>/<i>E</i> ratio of the AlTiN coating without reducing toughness, thereby enhancing the room temperature wear resistance of AlTiN coating. However, the wear resistance of AlTiCrSiN coating at 700&#xa0;℃ was not improved because the friction coefficient of AlTiCrSiN coating was higher than that of AlTiN coating.</p>

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Improvement of Mechanical Property and Room Temperature Wear Resistance of AlTiN Coating Through Low Content Co-Addition of Cr and Si Elements

  • 期刊论文

  • 发表日期：

    2025年1月24日

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  • Zhengbiao Jing,
  • Guang Xian

摘要

AlTiCrSiN coating was developed with low content co-addition of Cr and Si elements in AlTiN coating. The influence of the co-addition of Cr and Si elements on the structure, hardness, toughness and wear resistance of the AlTiN coating materials was examined by scanning electron microscopy, X-ray diffraction, indentation tests and ball-on-disk friction-wear test. The results showed that the AlTiN coating mainly exhibited a fcc-AlTiN solid solution phase with (111) preferred orientation. Co-addition of Cr and Si elements in AlTiN coating changed the preferred orientation from (111) to (200). The AlTiN coating exhibited columnar structure, while the AlTiCrSiN coating exhibited a dense and featureless structure. Co-addition of Cr and Si elements improved the hardness and H/E ratio of the AlTiN coating without reducing toughness, thereby enhancing the room temperature wear resistance of AlTiN coating. However, the wear resistance of AlTiCrSiN coating at 700 ℃ was not improved because the friction coefficient of AlTiCrSiN coating was higher than that of AlTiN coating.