Dense ZrB₂-MoSi₂ Composite Coating Fabricated by a New Multi-Chamber Detonation Accelerator on Carbon/Carbon Composites

Abstract:

A new multi-chamber detonation accelerator (MCDS) was applied to fabricate ZrB₂–MoSi₂ composite coating containing 20 mol.% of MoSi₂ on carbon/carbon composites. Phase composition and microstructure of the coating were characterized by X-ray diffraction and scanning electron microscopy. The ZrB₂–20MoSi₂ coating displayed compact and lamellar microstructure with porosity lower than 1%, where SiO₂ phase was uniformly distributed in the ZrO₂ matrix. The coating was well-adhered with carbon/carbon composites. Silica, m-ZrO₂, and small amount of Zr(MoO₄)₂ were formed.

• Periodical: Materials Science Forum (Volume 987)
• Pages: 53-58
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.987.53
• Online since: April 2020
• Authors: Marina G. Kovaleva*, Igor Yu. Goncharov, Vseslav Yu. Novikov, Ivan A. Pavlenko, Maxim N. Yapryntsev, Olga N. Vagina, Viacheslav V. Sirota, Yu.N. Tyurin, O.V. Kolisnichenko
• Keywords: Carbon/Carbon Composite, Composite Coatings, Microstructure, Multi-Chamber Detonation Accelerator, ZrB₂-MoASi₂

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