Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
181633 | Electrochemistry Communications | 2008 | 4 Pages |
The effects of electrochemical polarization on the micro-droplets formation were investigated using microscope observation method and electrochemical polarization techniques.It is found that cathodic polarization can initiate and accelerate the formation of micro-droplets, whereas anodic polarization can inhibit the micro-droplets formation, independent of metal type, electrolyte species, composition of air, and environmental humidity, indicating that the electrochemical polarization is the key condition for micro-droplets formation on metal surfaces. Based on above results, it is suggested that both the decrease of liquid/metal interface tension and the cooling of temperature of the three-phase-boundary area which are caused by cathodic polarization, may be the main reason for the micro-droplets formation.