Preparation and Oxidation Performance of a NiCoCrAlYSiHf + NiAl Composite Coating Deposited by Arc Ion Plating and Magnetron Sputtering Techniques

  • Hongrui Yao
  • Chengyang Jiang
  • Zebin BaoEmail author
  • Shenglong Zhu
  • Fuhui Wang


A NiCoCrAlYSiHf+NiAl composite coating was deposited onto a second-generation single-crystal superalloy René N5 by methods of arc ion plating and magnetron sputtering. After vacuum annealing, the composite coating exhibited a gradient distribution of elements, in which Al was enriched in outer layer and Cr was enriched in inner layer. Compared with conventional NiCoCrAlYSiHf and β-NiAl coatings, the composite coating was evaluated in isothermal and cyclic oxidation tests at 1100 °C in ambient air. The results showed that the oxidation rate of the composite coating was lower than that of NiCoCrAlYSiHf coating. Meanwhile, the extent of interdiffusion between coating and substrate in the composite coating was slighter compared with that in the β-NiAl coating. Microstructure evolutions of the composite coating after annealing and further oxidation test are investigated.


NiAl NiCoCrAlYSiHf oxidation, interdiffusion, microstructure 



This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51301184 and 51671202), and the Defense Industrial Technology Development Program (Grant No. JCKY2016404C001). This project was also sponsored by the “Liaoning BaiQianWan Talents” Program.


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Copyright information

© ASM International 2019

Authors and Affiliations

  • Hongrui Yao
    • 1
    • 2
  • Chengyang Jiang
    • 1
    • 3
  • Zebin Bao
    • 1
    Email author
  • Shenglong Zhu
    • 1
  • Fuhui Wang
    • 3
  1. 1.Corrosion and Protection Division, Shenyang National Laboratory for Materials ScienceInstitute of Metal Research, Chinese Academy of SciencesShenyangChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.Corrosion and Protection Division, Shenyang National Laboratory for Materials ScienceNortheastern UniversityShenyangChina

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