The appearance of the aluminium foil before and after annealing was observed with a metallographic microscope,and the surface morphology of porous alumina films was examined using SEM.

• 用金相显微镜观察了铝箔退火前后的表面形貌,并结合扫描电镜对多孔氧化铝薄膜进行了形貌观察和表征。