Effect of Cr Dopants on the Structure and Failure Mechanism of TiAlN Multilayered Films
作者: O. Nakonechna
作者单位: 1Taras Shevchenko National University of Kyiv, 60 Volodymyrska Str., UA-01033 Kyiv, Ukraine
刊名: Metallofiz. Noveishie Tekhnol., 2019, Vol.41 (05), pp.621-631
来源数据库: G.V. Kurdyumov Institute for Metal Physics, National Academy of Science of the Ukraine
DOI: 10.15407/mfint.41.05.0621
关键词: Thin filmCracks morphologyFracture toughnessHardnessTransmission electron microscopy.
原始语种摘要: Structural features and mechanical characteristics of nanocomposite TiAlN multilayered thin films are characterized by electron microscopy, nanoindentation and atomic force microscopy. The films are deposited onto WC–Co substrates using cathodic arc method. As found, Cr dopants have an essential impact on the microstructure of samples, the morphology of cracks, and the mechanical properties of the coatings. It results in an increase in the hardness of the films studied due to disappearance of the wurtzite phase and the formation of a CrN hard f.c.c. phase. Moreover, the formation of the columnar structure and the increase in the number of bilayers, $etc.$, contribute to the additional strengthening of the film. The formation and propagation of indentation-induced cracks are sensitive to...
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  • morphology 形态学
  • microscopy 显微镜检查
  • multilayered 多层
  • films 薄膜
  • wurtzite 纤维锌矿
  • indenter 硬度计压头
  • grained 粒状的
  • formation 建造
  • attributed 属性
  • structure 构造