Enrichment of alloying elements in anodized magnesium alloys

摘要

The possibility of enrichment of alloying elements in magnesium alloys as a consequence of growth of an anodic film has been investigated for sputtering -deposited Mg-0.4 at./100 W and Mg-1.0 at./100 W alloys. The alloys were anodized at 10 mA cm~-2 to various voltages, up to 150 V, in 3 M ammonium hydroxide/0.05 m ammonium phosphate electrolyte at 293 K. The Alloys revealed enrichments of tungsten to at least 1.7×10~`5 and 2.9×10~15 W atoms cm~-2 for The Mg-0.4 at./100 W and Mg-1.0 at./100 W alloys respectively.