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首页> 外文期刊>Nanotechnology >Hybrid pulse anodization for the fabrication of porous anodic alumina films from commercial purity (99%) aluminum at room temperature
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Hybrid pulse anodization for the fabrication of porous anodic alumina films from commercial purity (99%) aluminum at room temperature

机译：混合脉冲阳极氧化，用于在室温下由商业纯度（99％）的铝制造多孔阳极氧化铝膜

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摘要

Most porous anodic alumina (PAA) or anodic aluminum oxide (AAO) films are fabricated using the potentiostatic method from high-purity (99.999%) aluminum films at a low temperature of approximately 0-10 degrees C to avoid dissolution effects at room temperature (RT). In this study, we have demonstrated the fabrication of PAA film from commercial purity (99%) aluminum at RT using a hybrid pulse technique which combines pulse reverse and pulse voltages for the two-step anodization. The reaction mechanism is investigated by the real-time monitoring of current. A possible mechanism of hybrid pulse anodization is proposed for the formation of pronounced nanoporous film at RT. The structure and morphology of the anodic films were greatly influenced by the duration of anodization and the type of voltage. The best result was obtained by first applying pulse reverse voltage and then pulse voltage. The first pulse reverse anodization step was used to form new small cells and pre-texture concave aluminum as a self-assembled mask while the second pulse anodization step was for the resulting PAA film. The diameter of the nanopores in the arrays could reach 30-60 nm.
机译：大多数多孔阳极氧化铝（PAA）或阳极氧化铝（AAO）膜都是采用恒电位法由高纯度（99.999％）的铝膜在大约0-10摄氏度的低温下制得的，以避免在室温下产生溶解效应（ RT）。在这项研究中，我们已经证明了使用混合脉冲技术在室温下由商业纯度（99％）的铝制造PAA膜的方法，该技术将脉冲反向和脉冲电压结合起来用于两步阳极氧化。通过实时监测电流来研究反应机理。提出了在室温下形成明显的纳米多孔膜的混合脉冲阳极氧化的可能机理。阳极薄膜的结构和形态受阳极氧化时间和电压类型的影响很大。最好的结果是先施加反向脉冲电压，然后施加脉冲电压。第一脉冲反向阳极氧化步骤用于形成新的小电池和预纹理化的凹形铝作为自组装掩模，而第二脉冲阳极氧化步骤用于所得的PAA膜。阵列中纳米孔的直径可以达到30-60nm。

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