Abstract: For the first time, the formation of coatings by detonation spraying (DS) of a binder-free tungsten carbide, WC, was studied. The coating phase composition was shown to depend on the O/C molar ratio in the oxygen-acetylene mixture used for the spraying. Along with WC, cubic carbide/oxycarbide WC1-xOy, tungsten semicarbide W2C and metallic W were present in the coatings formed at O/C = 0.9 and O/C = 1.0, indicating the formation of cermet composite coatings. When O/C was greater than 1.1, WC almost fully transformed into metallic tungsten in the coatings. The hardness of the cermet coatings was higher than that of the metallic tungsten-based coatings. During the coating formation, noticeable compression stresses accumulated in the deposited layers. These stresses do not lead to coating detachment or cracking: coatings with thicknesses of up to 500 μm retain their integrity.

Cite: Batraev I.S. , Ulianitsky V.Y. , Shtertser A.A. , Dudina D.V. , Ukhina A.V.
Detonation Spraying of Binder-Free Tungsten Carbide: In-Situ Formation of Composite Coatings
Journal of Thermal Spray Technology. 2023. V.32. N1. P.249-258. DOI: 10.1007/s11666-022-01486-x WOS Scopus РИНЦ OpenAlex

Identifiers:

Web of science:	WOS:000878911800001
Scopus:	2-s2.0-85141144743
Elibrary:	54360429
OpenAlex:	W4308347802

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Scopus	2
OpenAlex	2
Web of science	2

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