直流恒压下,在酸性溶液中对铝实施两步阳极氧化制备了多孔氧化铝膜.采用扫描电镜(SEM)、原子力显微镜(AFM)对制备的多孔氧化铝膜进行形貌分析,孔径在纳米级且孔分布具有高度均匀性.采用SEM对试样进行观察,分析了工艺对多孔氧化铝膜形貌的影响.利用阳极氧化初期电流密度的变化并结合阳极氧化过程中的试样的SEM照片,分析了多孔氧化铝膜的形成机理.
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