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STUDIES OF THE STRUCTURAL AND PHASE STATE OF DETONATION COATINGS BASED ON THE FE–TIB₂–CRB₂ EUTECTIC SYSTEM AFTER PULSE PLASMA TREATMENT

Authors

Name Affiliation
Dauir Kakimzhanov

D. Serikbayev East Kazakhstan Technical University

Arystanbek Kussainov

D. Serikbayev East Kazakhstan Technical University

Indira Abizhanova

D. Serikbayev East Kazakhstan Technical University

Issue:

Volume 1, No. 1, 2026

Pages:

178-188

Views:

17

Keywords:

pulsed-plasma treatment, coatings, phase composition, structure, detonation spraying, hardness, eutectic system, wear

Abstract

Fe–TiB₂–CrB₂ coatings obtained by detonation spraying were modified by pulsed plasma treatment (PPT) to improve their structural and opera­tional properties. A comprehensive analysis of the phase composition, microstructure, microhardness, wear resistance, and corrosion beha­viour was performed. X-ray structural analysis confirmed the preser­vation of the α-Fe, TiB₂ and CrB₂ phases after treatment, with a simul­taneous decrease in the proportion of γ-Fe and Cr₂₃C₆ and a redistri­bution of boride phases. Electron microscope studies revealed a densifi­cation of the surface layer and a decrease in interlamellar porosity. Microhardness in the near-surface zone increased from ~15 to 17–18 GPa (by 15–20%), indicating local strengthening. Tribological tests showed a decrease in wear depth, while electrochemical studies revealed a positive shift in corrosion potential by 0.15–0.20 V and a decrease in the rate of anodic dissolution. PPT provides an improvement in mechanical and corrosion characteristics without changing the basic phase composition of the coating.

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Volume 1, No. 1, 2026

Kakimzhanov, D., Kussainov, А., & Abizhanova, I. (2026). STUDIES OF THE STRUCTURAL AND PHASE STATE OF DETONATION COATINGS BASED ON THE FE–TIB₂–CRB₂ EUTECTIC SYSTEM AFTER PULSE PLASMA TREATMENT. EKTU Journal of Engineering Sciences, 1(1), 178-188. https://doi.org/10.51885/3134-8009_JES_2026_1_15