An entrainment defect (also known as a double oxide film or bifilm) acts void containing an entrapped gas when submerged into light-alloy melt, thus reducing the quality and reproducibility of final castings. Previous publications, carried out with Al-alloy castings, reported that this trapped could be subsequently consumed by reaction surrounding volume negative effect defects. Compared Al-all...

Magnesium alloys have low corrosion resistance due to their high chemical activity. Therefore, it is necessary improve use in corrosive environments. In the present study, we aimed of AZ91 magnesium alloy NaCl solution, using aluminum sputtering deposition, anodic oxidation treatment and sealing process were examined. To evaluate rate, electrochemical experiments carried out. case just was not ...