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Laser ZrB2-Based Coating on Graphite

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Powder Metallurgy and Metal Ceramics Aims and scope

A coating ≤50 μm thick is produced on graphite by laser melting of a ZrB2-based powder layer with additions of zirconium and molybdenum silicides in air. The main coating phases are ZrB2, SiO2, and ZrSiO4. The surface is formed by spherical particles 10–80 μm in size, representing a two-phase eutectic in the ZrSiO4–SiO2 system as needlelike crystals. Microhardness of the coating is 2.5 times higher than that of the substrate and reaches 15 ± 1 GPa.

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine

    I. A. Podchernyaeva, A. D. Panasyuk, O. N. Grigoriev, G. A. Frolov, A. M. Bloshchanevich, D. V. Yurechko & M. A. Vasil’kovskaya

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  1. I. A. Podchernyaeva
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  2. A. D. Panasyuk
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  3. O. N. Grigoriev
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  4. G. A. Frolov
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  5. A. M. Bloshchanevich
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  6. D. V. Yurechko
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  7. M. A. Vasil’kovskaya
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Corresponding author

Correspondence to I. A. Podchernyaeva.

Additional information

Translated from Poroshkovaya Metallurgiya, Vol. 53, Nos. 11–12 (500), pp. 87–92, 2014.

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Podchernyaeva, I.A., Panasyuk, A.D., Grigoriev, O.N. et al. Laser ZrB2-Based Coating on Graphite. Powder Metall Met Ceram 53, 688–692 (2015). https://doi.org/10.1007/s11106-015-9664-0

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  • DOI: https://doi.org/10.1007/s11106-015-9664-0

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