Issues »  Volume 48, Issue 6

Fabrication of MoSi2, ZrB2–SiC Coatings from Vacuum-Arc Discharge Plasma

S. Yu. Teslia$^{1}$, M. A. Teslia$^{1}$, P. I. Loboda$^{1}$, V. M. Nadtoka$^{2}$, I. O. Husarova$^{2}$, V. S. Kraieva$^{2}$, D. S. Leonov$^{3}$, Yu. I. Bogomol$^{1}$

$^{1}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37, Prosp. Beresteiskyi, UA-03056 Kyiv, Ukraine
$^{2}$State Enterprise ‘M. K. Yangel ‘Design Office ‘Pivdenne’’, 3, Kryvorizka Str., UA-49008 Dnipro, Ukraine
$^{3}$Technical Centre N.A.S. of Ukraine, 13, Pokrovs’ka, Str., UA-04070 Kyiv, Ukraine

Received: 05.05.2026; final version - 13.05.2026. Download: PDF

During operation, it is possible to press hot MoSi2 and ZrB2–10SiC coatings on niobium substrates by means of the method of vacuum-arc deposition with permanent cathodes made by means of the method of spark-plasma cooling. An x-ray phase analysis, a study of the microstructures, local chemical composition, adhesive strength, microhardness, and tribological forces of the obtained coatings is carried out. As established, during the placement of the MoSi2 coating, an active diffusion interaction between the silicon and the niobium substrate with occurrence of the insulated Nb5Si3 transition layer that increases the adhesive strength of the coating to 38–52 MPa. For ZrB2–10SiC coatings, it is confirmed the presence of ZrB2, SiC phases and a hard coating based on ZrB2, as well as the formation of a smooth and homogeneous structure with a microhardness of 1800–2400 HV1. The results of tribological tests show that the ZrB2–10SiC coating is 2–2.5 times more durable than the MoSi2 coating. As established, the coating of the MoSi2 diffusion layer, as well as the same of the coating of ZrB2–10SiC, demonstrates hardness and wear resistance. The obtained results confirm the perspective of using vacuum-arc MoSi2 and ZrB2–10SiC coatings for storage of uncooled high-temperature elements in aerodynamic technology.

Key words: vacuum-arc deposition, MoSi2, ZrB2–10SiC, niobium substrate, heat-resistant coatings, microstructure, adhesive strength, wear resistance.

URL: https://mfint.imp.kiev.ua/en/abstract/v48/i06/0611.html

DOI: https://doi.org/10.15407/mfint.48.06.0611

PACS: 52.80.Mg. 62.20.Qp, 68.35.Fx, 68.55.-a, 81.05.Je, 81.15.-z, 81.40.Pq

Citation: S. Yu. Teslia, M. A. Teslia, P. I. Loboda, V. M. Nadtoka, I. O. Husarova, V. S. Kraieva, D. S. Leonov, and Yu. I. Bogomol, Fabrication of MoSi2, ZrB2–SiC Coatings from Vacuum-Arc Discharge Plasma, Metallofiz. Noveishie Tekhnol., 48, No. 6: 611–626 (2026) (in Ukrainian)

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