Characterization of Prepared Superhydrophobic Surfaces on AZ31 and AZ91 Alloys Etched with ZnCl2 and SnCl2

Superhydrophobic surfaces were prepared using a two-step method that involved the etching of AZ31 and AZ91 magnesium alloys then modifying etched with stearic acid. Magnesium ZnCl2 SnCl2 exhibited roughened micro- nanoscale hierarchical structures consisting two chemically distinct regions (Zn/Zn(OH)2 or Sn/SnO2 Mg(OH)2). An optimum time ten minutes was chosen for both etchants. highest contact angle when acid reacted at 50 °C 4 h. Stearic bound as zinc stearate on Mg solutions, respectively. The superhydrophobic process improved corrosion resistance in phosphate buffered saline (PBS) solution compared to bare alloy, use etchant leading better results. improvement alloy observed stearic-acid-modified SnCl2. In contrast, pretreat resulted significant deterioration properties alloy. microstructure had an impact modification process. On basis findings, characterization chemistry formation proposed. surfaces, incorporating antibacterial metals, features which may increase their potential medical applications.