Introduction This study investigates the influence of electrospark alloying (ESA) parameters on the morphological characteristics, microhardness, and abrasive wear resistance of coatings deposited on 1045 steel using VK15 alloy and R6M5 steel electrodes. Methods Coatings were produced at specific processing times of 1 and 2 min/cm 2 . Their performance was evaluated through microhardness measurements and wear resistance tests in an abrasive environment at friction paths of 95 and 190 m. Results Increasing processing time significantly reduced coating porosity (by up to 45%) and enhanced thickness. VK15-based coatings exhibited superior performance, achieving microhardness up to 22.8 GPa and improving wear resistance by 24%–40% compared to the substrate. Conversely, R6M5 coatings showed inferior resistance due to lower carbide content and structural heterogeneity. Friction caused abrasive embedding and a significant reduction in surface microhardness for both coating types. Discussion The findings demonstrate that ESA with VK15 electrodes is a highly effective method for enhancing the durability of steel components operating under abrasive conditions, providing better surface stability than R6M5.
Al-Quraan et al. (Thu,) studied this question.
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