Elahi Haghighi Naghme, Hadianfard Mohammad Jafar
Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran.
Heliyon. 2024 Aug 3;10(15):e35779. doi: 10.1016/j.heliyon.2024.e35779. eCollection 2024 Aug 15.
Nowadays, researchers are looking for ways to produce complex tools and pieces with high precision at a low cost. In recent decades, electroforming has been an important and stable technique for producing composite parts. In this research, Ni-ZrO nanocomposite foils were fabricated by using a nickel-chloride bath through electroforming, a bath not previously utilized for this purpose. In this study, the effects of ZrO concentration and direct current density on the volume percentage of ZrO nanoparticles and the grain size of the nickel matrix of foils are also investigated. The sample with 13.65 vol % nanoparticles had the highest volume percentage and the minimum nickel grain size of 516.9 nm, which is almost 46 % smaller than the grain size of pure nickel foil. The wear and corrosion behavior of the foils were examined using a pin-on-disk wear test, potentiodynamic polarization, and impedance spectroscopy analysis. The results showed considerable improvement in the wear and corrosion resistance of the Ni-ZrO samples compared to the pure electroformed nickel. The nanocomposites exhibit a lower friction coefficient than pure nickel, with a maximum reduction of 44 %. A composite specimen of Ni-ZrO had 2.5 % lower corrosion density and 596 % higher charge transfer resistance compared to pure nickel. It was concluded that the nickel-chloride bath has an excellent potential to produce composite nickel foils with acceptable brightness, satisfactory wear, and corrosion resistance.
如今，研究人员正在寻找以低成本高精度生产复杂工具和零件的方法。近几十年来，电铸一直是生产复合零件的一项重要且稳定的技术。在本研究中，通过电铸使用氯化镍镀液制备了Ni-ZrO纳米复合箔，该镀液此前未用于此目的。在本研究中，还研究了ZrO浓度和直流电流密度对箔中ZrO纳米颗粒的体积百分比和镍基体晶粒尺寸的影响。纳米颗粒体积分数为13.65 vol%的样品具有最高的体积百分比和最小的镍晶粒尺寸，为516.9 nm，比纯镍箔的晶粒尺寸小近46%。使用销盘磨损试验、动电位极化和阻抗谱分析对箔的磨损和腐蚀行为进行了研究。结果表明，与纯电铸镍相比，Ni-ZrO样品的耐磨性和耐腐蚀性有显著提高。纳米复合材料的摩擦系数低于纯镍，最大降低了44%。与纯镍相比，Ni-ZrO复合试样的腐蚀密度降低了2.5%，电荷转移电阻提高了596%。得出的结论是，氯化镍镀液在生产具有可接受的亮度、令人满意的耐磨性和耐腐蚀性的复合镍箔方面具有巨大潜力。
