Ahmad Muhammad, Samra Ahmad Saadi, Habib Sehrish, Kahraman Ramazan, Mansoor Bilal, Shakoor R A
Center for Advanced Materials (CAM), Qatar University, Doha, 2713, Qatar.
Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, 2713, Qatar.
Sci Rep. 2025 Jul 23;15(1):26707. doi: 10.1038/s41598-025-12319-6.
This study investigated the development and corrosion performance evaluation of Ni-P-YO nanocomposite coatings, synthesized through electroless deposition on A36 carbon steel with varying concentrations of YO nanoparticles (YONPs) (0.25 g/L, 0.50 g/L, and 0.75 g/L) within the Ni-P matrix. The incorporation of YO nanoparticles, along with the innovative use of patent commercialized products solutions Nichem 3010 A and Nichem 3010B where Nichem A and B are commercial electroless plating solutions, which introduces a novel approach to enhancing the corrosion resistance and mechanical properties of the coatings. Structural analyses confirm the formation of phase-pure coatings, with uniform dispersion of YONPs throughout the Ni-P matrix. Surface topographic analysis reveals an increase in surface roughness in Ni-P-YO nanocomposite coatings as YONP concentration increases to 0.75 g/L, attributed to the presence of insoluble and hard YONPs. Mechanical properties, as evaluated by Vickers microhardness and nanoindentation tests, demonstrated a marked improvement in hardness, with YONP (0.75 g/L) incorporation proved to have the highest microhardness (764.7Hv) and elastic modulus (6.52GPa), suggesting a synergistic enhancement due to grain refinement and dispersion effects. Electrochemical assessments, including Tafel analysis and Electrochemical Impedance Spectroscopy (EIS), reveal that incorporating 0.75 g/L of YONPs into the Ni-P structure significantly reduces the corrosion current density (icorr) while increasing polarization resistance (Rp) in comparison to other concentrations (0.25 g/L and 0.50 g/L). This result indicates superior corrosion resistance, with the Ni-P-YO nanocomposite coatings exhibiting an impressive corrosion resistance improvement of 82.76%. This enhanced resistance is attributed to the mechanism whereby YONPs occupy micropores, thereby reducing active corrosion sites within the Ni-P matrix. The findings strongly suggest that Ni-P-YO composite coatings offer a robust solution for corrosion mitigation, presenting them as promising candidates for application in aggressive and corrosive environments.
本研究调查了通过化学镀在A36碳钢上合成的Ni-P-YO纳米复合涂层的发展及腐蚀性能评估，其中在Ni-P基体中加入了不同浓度的YO纳米颗粒（YONPs）（0.25 g/L、0.50 g/L和0.75 g/L）。YO纳米颗粒的加入，以及专利商业化产品溶液Nichem 3010 A和Nichem 3010B的创新使用（其中Nichem A和B是商业化学镀溶液），引入了一种增强涂层耐腐蚀性和机械性能的新方法。结构分析证实形成了纯相涂层，YONPs在整个Ni-P基体中均匀分散。表面形貌分析表明，随着YONP浓度增加到0.75 g/L，Ni-P-YO纳米复合涂层的表面粗糙度增加，这归因于不溶性硬YONPs的存在。通过维氏显微硬度和纳米压痕测试评估的机械性能表明硬度有显著提高，加入YONP（0.75 g/L）的涂层具有最高的显微硬度（764.7Hv）和弹性模量（6.52GPa），表明由于晶粒细化和分散效应产生了协同增强作用。电化学评估，包括塔菲尔分析和电化学阻抗谱（EIS），表明与其他浓度（0.25 g/L和0.50 g/L）相比，在Ni-P结构中加入0.75 g/L的YONPs可显著降低腐蚀电流密度（icorr），同时提高极化电阻（Rp）。该结果表明具有优异的耐腐蚀性，Ni-P-YO纳米复合涂层的耐腐蚀性提高了82.76%，令人印象深刻。这种增强的抗性归因于YONPs占据微孔从而减少Ni-P基体中活性腐蚀位点的机制。研究结果强烈表明，Ni-P-YO复合涂层为减轻腐蚀提供了一种可靠的解决方案，使其成为在侵蚀性和腐蚀性环境中应用的有前途的候选材料。
