Abstract In this study, Ni–W nanocrystalline alloy coatings incorporated with different amounts of Y2O3 nanoparticles (0–20 g/L in the electrolyte) were successfully synthesized via direct current electrodeposition method at an applied current density of 2 A/dm2. The microstructure, morphology, chemical composition, microhardness and electrochemical performance of the deposited coatings were comprehensively investigated to unveil the fundamental effects of the Y2O3 addition. Results indicate that Y2O3 nanoparticles were uniformly incorporated in the composite coatings. The incorporated Y2O3 nanoparticles contributed to a compact and smooth coating surface. The microstructures of the deposited coatings that determined from the broadening of X-ray diffraction peaks proved that the addition of nanoparticle resulted in microstructure refinements, and the composite coating deposited from an electrolyte containing 10 g/L Y2O3 nanoparticles showed the smallest crystallite size 15.5 nm and the largest microstrain 0.59%. The microhardness increased from 533 to 789 HV as the concentration of Y2O3 particles in the electrolyte increased from 0 to 20 g/L. Furthermore, the corrosion resistance of the composite coatings improved due to the incorporation of Y2O3 nanoparticles and the composite coating electrodeposited from an electrolyte containing 10 g/L Y2O3 nanoparticles exhibited the highest anti-corrosion performance.

中文翻译：

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Y2O3纳米颗粒对电沉积Ni-W-Y2O3纳米晶涂层微观结构和性能的影响

摘要 在本研究中，通过直流电沉积法在 2 A/dm2 的外加电流密度下成功合成了掺入不同量 Y2O3 纳米颗粒（电解液中为 0-20 g/L）的 Ni-W 纳米晶合金涂层。对沉积涂层的微观结构、形貌、化学成分、显微硬度和电化学性能进行了综合研究，以揭示 Y2O3 添加的基本影响。结果表明 Y2O3 纳米颗粒均匀地结合在复合涂层中。掺入的 Y2O3 纳米粒子有助于形成紧凑和光滑的涂层表面。从 X 射线衍射峰的展宽确定的沉积涂层的微观结构证明纳米颗粒的添加导致微观结构的改进，由含有 10 g/L Y2O3 纳米颗粒的电解质沉积的复合涂层显示出最小的微晶尺寸 15.5 nm 和最大的微应变 0.59%。随着电解液中 Y2O3 颗粒浓度从 0 增加到 20 g/L，显微硬度从 533 增加到 789 HV。此外，由于掺入了 Y2O3 纳米颗粒，复合涂层的耐腐蚀性能得到改善，并且由含有 10 g/L Y2O3 纳米颗粒的电解液电沉积的复合涂层表现出最高的防腐性能。随着电解液中 Y2O3 颗粒浓度从 0 增加到 20 g/L，显微硬度从 533 增加到 789 HV。此外，由于掺入了 Y2O3 纳米颗粒，复合涂层的耐腐蚀性能得到改善，并且由含有 10 g/L Y2O3 纳米颗粒的电解液电沉积的复合涂层表现出最高的防腐性能。随着电解液中 Y2O3 颗粒浓度从 0 增加到 20 g/L，显微硬度从 533 增加到 789 HV。此外，由于掺入了 Y2O3 纳米颗粒，复合涂层的耐腐蚀性能得到改善，并且由含有 10 g/L Y2O3 纳米颗粒的电解液电沉积的复合涂层表现出最高的防腐性能。