Behniya Sara, Yousefpour Mardali
Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran.
Heliyon. 2024 Sep 5;10(17):e37342. doi: 10.1016/j.heliyon.2024.e37342. eCollection 2024 Sep 15.
Copper and its alloys due to favorable properties such as ductility, high electrical and thermal conductivity are very important in various industries. The coating of rare earth elements and intermediate elements is a suitable method to form a super-hydrophobic coating on copper substrate. The aim of this research is to fabricate a controlled super-hydrophobic coating of cerium-zirconium myristate on the copper base using the electrochemical deposition process and to prevent the corrosive solution penetration and reaching to the copper substrate due to removing the corrosive solution from the surface of the coating. The variables parameters in this process are the change of deposition time, the different concentrations of cerium chloride, and zirconium chloride salts and is necessary to investigate their effect of them on the structural morphology, wettability and corrosion properties. According to the results of Field Emission Scanning Electron Microscope (FE-SEM), the surface morphology of the coatings is consisted of lotus-like nano and micro leaves. Furthermore, the wettability of the prepared coatings was analyzed and observed by measuring the contact angle of the coating with water droplet that the fabricated coating from the electrolyte containing 0.056 M of cerium chloride, 0.014 M of zirconium chloride, 0.1 M of myristic acid, 10 ml of hydrochloric acid and ethanol solvent has super-hydrophobic properties and the contact angle with water droplet is measured at 161°. The FT-IR and EDS analysis showed that the chemical composition of lotus-like leaves is cerium myristate and zirconium myristate. As a result, it can be inferred that the type of morphology and surface roughness play an important role in inducing the super-hydrophobic properties and has the most effect on the corrosion resistance of the coating due to the formation air pockets and then to prevents the corrosive solution penetration through the cross section of the coating and reaches to the copper substrate.
铜及其合金由于具有延展性、高导电性和导热性等优良性能，在各个行业中都非常重要。稀土元素和中间元素的涂层是在铜基体上形成超疏水涂层的一种合适方法。本研究的目的是利用电化学沉积工艺在铜基上制备一种可控的肉豆蔻酸铈锆超疏水涂层，并通过去除涂层表面的腐蚀溶液来防止腐蚀溶液渗透并接触到铜基体。该工艺中的可变参数包括沉积时间的变化、氯化铈和氯化锆盐的不同浓度，有必要研究它们对结构形态、润湿性和腐蚀性能的影响。根据场发射扫描电子显微镜（FE-SEM）的结果，涂层的表面形态由莲花状的纳米和微米叶片组成。此外，通过测量涂层与水滴的接触角来分析和观察制备涂层的润湿性，结果表明，由含有0.056M氯化铈、0.014M氯化锆、0.1M肉豆蔻酸、10ml盐酸和乙醇溶剂的电解液制备的涂层具有超疏水性能，与水滴的接触角为161°。傅里叶变换红外光谱（FT-IR）和能谱分析（EDS）表明，莲花状叶片的化学成分是肉豆蔻酸铈和肉豆蔻酸锆。因此，可以推断，形态类型和表面粗糙度在诱导超疏水性能方面起着重要作用，并且由于形成气穴，进而防止腐蚀溶液穿透涂层横截面并接触到铜基体，对涂层的耐腐蚀性影响最大。
