Deposition of binderless B4C coatings by detonation spraying

Deposition of binderless B4C coatings by detonation spraying Full article

Journal

Materials Letters
ISSN: 0167-577X

Output data

Year: 2025, Volume: 387, Pages: 138264 Pages count : 1 DOI: 10.1016/j.matlet.2025.138264

Authors

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

Affiliations

1	Lavrentyev Institute of Hydrodynamics SB RAS, Lavrentyev Ave. 15, Novosibirsk 630090, Russia
2	Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze Str. 18, Novosibirsk 630090, Russia

At present, boron carbide, B4C, coatings are in high demand as protective plasma-facing first-wall materials in thermonuclear reactors. In the present work, for the first time, binderless B4C coatings were obtained by detonation spraying (DS). The coatings were deposited on a tungsten sublayer deposited on a steel substrate. DS was performed using an acetylene-oxygen explosive mixture of C2H2 + 1.1O2 composition. This enabled efficient heating of the boron carbide particles during spraying. The X-ray phase analysis confirmed that the B4C phase was the major phase of the coatings. The coatings had a porosity of 1.4 ± 0.2 %, a hardness of 13.9 ± 1.6 GPa, and a cohesion of 12.4 ± 0.6 MPa. Based on results of the present work, the DS technology can be recommended for depositing protective plasma-facing binderless B4C coatings on the first wall of a thermonuclear reactor.

Batraev I.S. , Ulianitsky V.Y. , Rybin D.K. , Dudina D.V. , Shtertser A.A. , Ukhina A.V.
Deposition of binderless B4C coatings by detonation spraying
Materials Letters. 2025. V.387. P.138264. DOI: 10.1016/j.matlet.2025.138264 WOS OpenAlex

Web of science:	WOS:001431927700001
OpenAlex:	W4407731343

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