Effect of Current Density, Reaction Temperature and Deposition Time on the Electrodeposition of ZrB2 Coating
Source abstract
Abstract
ZrB2 coating was successfully prepared on molybdenum substrate by molten salt electrodeposition method in this study. The reaction medium was NaCl-KCl eutectic molten salt with K2ZrF6 as the zirconium source and KBF4 as the boron source. The effect of electrodeposition parameters including the current density, reaction temperature and deposition time on the phase composition, surface and cross-sectional morphologies, thickness, and preferred orientation of ZrB2 coating was investigated in detail. The influence mechanism of each condition was also discussed. The experimental results proved that all the three parameters could directly affect the electrodeposition process of ZrB2 coating in molten salt. With the increase of the current density, the thickness and surface roughness of the coating increased. Higher reaction temperature could accelerate the mass transfer, weaken the concentration polarization, and increase the deposition rate of the coating. With the extension of the deposition time, the electrodeposition control process of ZrB2 coating changed from single electrochemical polarization control to the combination of electrochemical polarization and concentration polarization control. The preparation of ZrB2 coating by molten salt electrodeposition showed a wide process window. By adjusting the electrodeposition process parameters, ZrB2 coatings with different microstructures, preferred orientation, and thickness could be prepared on the surface of molybdenum.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Semiconductor materials and interfaces
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
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