ポーラス陽極酸化Al2O3皮膜へのMn付活剤の電気化学的封入
1987 年 38 巻 12 号 p. 561-563
詳細
1987 年 38 巻 12 号 p. 561-563
The porous Al2O3 film formed by anodizing 99.99% Al in 10 wt% sulfuric acid solution was colored electrolytically in 6.3×10-3mol potassium permanganate solution at 27V AC 50Hz for 1min. Mn compounds were electrodeposited at the bottom of pores during electrolytic coloring of the film. When the colored film was re-anodized in 0.1mol ammonium pentaborate solution at a constant direct current density of 20A/m2, an intensive yellow emission was observed on its surface. Since the barrier oxide layer thickens during re-anodizing, it is considered that Mn2+ is incorporated within this layer and acts as the electroluminescent activator.
