The Paton Welding Journal, 2019, №05



2019 №05 (02)

DOI of Article 10.15407/tpwj2019.05.03

2019 №05 (04)

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The Paton Welding Journal, 2019, #5, 18-27 pages
 
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #5, 2019 (May)
Pages 18-27

Structure and phase composition of ZrB₂–SiC–AlN plasma coatings on the surface of C/C–SiC composite material

Yu.S. Borisov¹, A.L. Borisova¹, A.P. Grishchenko¹, N.V. Vigilyanskaya¹, M.V. Kolomytsev¹ and M.A. Vasilkovskaya²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²I.M. Frantsevich IPM of the NAS of Ukraine 3 Krzhizhanovskii str., 03142, Kyiv, Ukraine

The process of protective plasma ZrB₂–SiC–AlN coating deposition on the surface of C/C–SiC composite material was studied. Coating was sprayed using subsonic Ar/N₂-plasma jet and supersonic jet of air-gas plasmatron. The role of interphase phenomena occurring during plasma spraying in the volume of particles of ZrB₂–SiC–AlN composite powder in formation of the coating layer was established. It is shown that the composition and velocity of the plasma spray jet affects the structure and phase composition of the forming ZrB₂–SiC–AlN coating. Resistance of the produced coatings to thermal cyclic heating was tested by a flame jet of oxygen-propane-butane torch. Coating of 400 mm thickness showed concervation of protective properties after 15 thermal cycles. Effect of thermal cyclic heating on formation of a three-zone structure in the protective coating, as a result of oxidation process was studied. Its texture and phase composition was examined by XRD and MXRD techniques. It is found that the surface layer of the coating after thermal cyclic heating consists of Al₂SiO₅-based matrix with submicron ZrO₂ inclusions. 25 Ref., 3 Tables, 9 Figures.
Keywords: plasma spraying, protective coating, composite material, ultra high temperature ceramics, microstructure, phase composition, interphase interaction, oxide microinclusions

 
Received: 13.02.19
Published: 30.05.19
 
 

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Suggested Citation

Yu.S. Borisov, A.L. Borisova, A.P. Grishchenko, N.V. Vigilyanskaya, M.V. Kolomytsev and M.A. Vasilkovskaya (2019) Structure and phase composition of ZrB₂–SiC–AlN plasma coatings on the surface of C/C–SiC composite material. The Paton Welding J., 05, 18-27.

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