Bioinspired construction of Mg-Li alloys surfaces with stable superhydrophobicity and improved corrosion resistance

A facile method was utilized for the construction of the bioinspired superhydrophobic Mg-Li alloy surfaces with peonylike micronanoscale hierarchical structures. The resultant materials were characterized by scanning electron microscope, x-ray photoelectron spectroscopy, and water contact angle measurements. The obtained Mg-Li alloy surfaces presented the dramatically improved corrosion resistance and long-term stable superhydrophobic properties with a static water contact angle of about 160 degrees and a small sliding angle of less than 5 degrees, which may extend the practical application of Mg-Li alloys in industrial and high-technology fields. (C) 2008 American Institute Of Physics.