Formation of Composite Coatings during Detonation Spraying of Cr3C2

Formation of Composite Coatings during Detonation Spraying of Cr3C2 Full article

Journal

Journal of Composites Science
ISSN: 2504-477X

Output data

Year: 2023, Volume: 7, Number: 2, Pages: 71 Pages count : 1 DOI: 10.3390/jcs7020071

Authors

Batraev Igor S. ¹ , Ulianitsky Vladimir Yu. ^1,2 , Shtertser Alexandr A. ¹ , Dudina Dina V. ^1,3 , Ukhina Arina V. ³

Affiliations

1	Lavrentyev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
2	Faculty of Aircraft, Novosibirsk State Technical University, 630073 Novosibirsk, Russia
3	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 630117 Novosibirsk, Russia

Funding (1)

Министерство науки и высшего образования Российской Федерации

FWGG-2021-0005

In the current practice of applying carbide-based coatings by thermal spraying, the starting material usually contains a metal binder. However, it is important to study the possibility of spraying binder-free carbides, since the metal components usually reduce the operating temperature and corrosion resistance of cermet coatings. In this work, a powder of chromium carbide, Cr3C2 , was sprayed using a CCDS2000 detonation gun. Acetylene–oxygen mixtures C2H2 + kO2 with k varying from 0.8 to 3.0 were used as an energetic material. Due to chemical reactions between Cr3C2 and the detonation products, the coatings were of composite nature (multi-phase materials) with a composition depending on k. At k values in the range from 0.8 to 1.1, along with Cr3C2 , the coatings contained chromium carbonitride Cr3N0.4C1.6. In the k range from 1.3 to 2.0, Cr7C3 and Cr were the main components of the coatings. As k was increased to 3.0, along with Cr7C3 and Cr, the CrO and Cr2O3 oxides formed in the coatings. The mechanical properties and wear resistance of the coatings were found to depend on their phase compositions. Coatings produced by detonation spraying of Cr3C2 powder may be useful for increasing the corrosion resistance of machine parts to mineral acids and high-temperature oxidation resistance.

Batraev I.S. , Ulianitsky V.Y. , Shtertser A.A. , Dudina D.V. , Ukhina A.V.
Formation of Composite Coatings during Detonation Spraying of Cr3C2
Journal of Composites Science. 2023. V.7. N2. P.71. DOI: 10.3390/jcs7020071 WOS РИНЦ OpenAlex

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