Effect of Dealloying Conditions on Nanoporous Surface of Cu-Zn Alloy

摘要

This research aims to develop a porous layer surface using two steps: the radio frequency (R.F.) sputtering and dealloying. The glass substrate was firstly coated with Cu-Zn using the R.F. sputtering method. Then nano-porous layer surface is produced by dealloying-corrosion to dissolve unwanted element (Zn) from the base metal (Cu). The characterization techniques are scanning electron microscope (FE-SEM) for topographical analysis, X-ray fluorescent (XRF) for chemical analysis, and potentiostat for electrochemical measurement. It was found that the coated specimens obtained by R.F. sputtering are uniformly distributed by Cu-Zn alloys on the substrate's surface. In addition, after dealloying, it was found that the diameter of the ligament size and pore size are in the nano-scale over the substrate's surface.