Considering the current interest in the preparation of modified surfaces with fixed nanostructures, in this research, the hot water treatment was chosen as a simple and efficient procedure for the direct growth of ZnO nanostructures (ZnO NSs) on the metallic surface. To improve the method and reduce the cost of experiments, the commercial galvanized steel (steel containing a thin layer of zinc) was used as the base substrate. The use of the galvanized steel as an inexpensive and available metal surface has advantages compared to the pure Zn foil (used in other researches). In addition, in the present work, the effective pretreatment of the base substrate surface by applying the chemical etching under the low intensity ultrasonic irradiation facilitated the reaction progress (Zn → ZnO) in a shorter time and relatively low temperature in comparison to many reports. To find the effect of acoustic energy on the final ZnO morphology, the hot water treatment was carried out under conventional and sonochemical conditions. Finally, as a practical application, resulting surfaces were coated with electroless Ni-P deposits and the effect of as-grown ZnO NSs (as the sublayer) on improvement in the corrosion protection of binary Ni-P deposits was evaluated by the electrochemical method.

考虑到当前对制备具有固定纳米结构的改性表面的兴趣，在本研究中，选择热水处理作为在金属表面直接生长ZnO纳米结构（ZnO NSs）的简单有效的方法。为了改进该方法并降低实验成本，将商用镀锌钢（含锌薄层的钢）用作基础基材。与纯锌箔（在其他研究中使用）相比，将镀锌钢用作廉价且可用的金属表面具有优势。另外，在目前的工作中，与许多报道相比，通过在低强度超声辐射下进行化学蚀刻对基础衬底表面进行有效的预处理，可以在较短的时间和相对较低的温度下促进反应进程（Zn→ZnO）。为了发现声能对最终ZnO形态的影响，在常规和声化学条件下进行了热水处理。最后，在实际应用中，用化学镀的Ni-P镀层覆盖所得表面，并通过电化学方法评估生长的ZnO NSs（作为子层）对改善二元Ni-P镀层的腐蚀防护的作用。