CHAJRACTERISTICS OF OXIDE FORMED ON THE SURFACE OF Zn-48.48Al-1.65Cu-0.03Mg MELT
Zn—48.48Al—1.65Cu—0.03Mg合金液表面氧化膜微细特性

The hoe characteristics of the Oxide am on the surface of Zn -- 48. 48Al -- 1. 6 5 Cu 0.03Mg meltl were investigated using X--ray photoelectron spectroscopy (XPS) and X--ray exaction (XRD)etc aam oxide film consists mainly of ZnO, Al2O3 and Zn while a small amount of MgO, MgAl2O4 and Cu also exist in the film. The chides of MgO and MgAl2O4 are obviously concentrated on the surface of the film. In these chides, the phenomenon of an excess of metallic ions is quit evident. In addition, it has been proved that, due to the oxidizing the contents of Zn and Mg in the melt will decrease and that of Al and Cu will increase.