Effect of Nano WC on Wear and Corrosion Resistances of CoCrFeNiTi High Entropy Alloy Coating
Source abstract
Abstract
The CoCrFeNiTi high-entropy alloy exhibits outstanding comprehensive performance, rendering it suitable for surface protective coatings on critical equipment components. To further enhance its performance, a mechanical powder mixing approach was utilized to pre-process CoCrFeNiTi and CoCrFeNiTi + WC (5% mass fraction) high-entropy alloy powders. These powders were subsequently laser-cladded onto 45# steel substrates, enabling a comparative investigation into the microstructure, mechanical properties, and corrosion resistance of the two coatings. The results distinctly highlight the superiority of the CoCrFeNiTi + WC (5%) coating: the average microhardness increased from 750 to 900 HV. In friction and wear tests, the coefficient of friction decreased from 0.75 to 0.68, resulting in a reduction of wear by 0.82 mg, representing the least amount of wear. Electrochemical examinations revealed an elevation of the self-corrosion potential by 0.039 V and a magnitude decrease in self-corrosion current density. Notably, a significant reduction in surface corrosion pits was observed, indicating the mildest degree of corrosion. The incorporation of nano-sized WC effectively enhances the wear and corrosion resistance of the CoCrFeNiTi high-entropy alloy coating.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
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