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Properties of NiCrAlY coatings fabricated on superalloy GH4169 by electrospark deposition

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Abstract

NiCrAlY coatings were deposited on superalloy GH4169 by electrospark deposition technique. Influences of the depositing parameters (100 V/40 μF, 100 V/80 μF, 100 V/120 μF, 150 V/40 μF, 150 V/80 μF, 150 V/120 μF) on the microstructure and the properties of the coatings were experimentally investigated. Results show that the depositing parameters affect defect density and consequent properties of coatings. The deposition voltage has greater influences on the deposition velocity and on the properties of the coatings than the deposition capacity. The weight gain per area of the coatings deposited under 150 V increases faster than that under 100 V. The coating deposited under 100 V/40 μF has the minimum defect density and the best properties.

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Acknowledgements

This work is supported by “863” project (No. 2015AA034303). The authors also thank Lin Yang (School of Aerospace, Mechanical and Mechatronic Engineering School of Naval Architecture and Ocean Engineering, the University of Sydney, NSW 2006, Australia) for English polishing.

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Authors and Affiliations

  1. School of Materials Science & Engineering, Harbin University of Science and Technology, Harbin, 150080, People’s Republic of China

    Guojian Cao & Yueyue Wang

  2. National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin, 150001, People’s Republic of China

    Guangze Tang

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  1. Guojian Cao
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  2. Yueyue Wang
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  3. Guangze Tang
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Correspondence to Guangze Tang.

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Cao, G., Wang, Y. & Tang, G. Properties of NiCrAlY coatings fabricated on superalloy GH4169 by electrospark deposition. Int J Adv Manuf Technol 96, 1787–1793 (2018). https://doi.org/10.1007/s00170-017-1162-8

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  • DOI: https://doi.org/10.1007/s00170-017-1162-8

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