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首页> 外文期刊>Journal of Materials Science >Macro, micro and nanostructure of TiO2 anodised films prepared in a fluorine-containing electrolyte
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Macro, micro and nanostructure of TiO2 anodised films prepared in a fluorine-containing electrolyte

机译：含氟电解质中制备的TiO2 阳极氧化膜的宏观，微观和纳米结构

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摘要

The paper presents an electron microscopy study of the macro, micro and nanostructure of titania nano-tubes formed by electrochemical anodisation of titanium in a fluorine containing electrolyte. Scanning electron microscopy (SEM) is used to examine the overall structure of the nano-tubes formed under potentiostatic conditions. Transmission electron microscopy (TEM) has been used to examine the structure of the oxide layer of a sample anodised for a relatively short period (30 min) and provides a new insight into the formation of titania nano-tubes. The fluorine ions are able to nucleate sites on the titanium metal and generate a series of interconnected cavities or pores in the oxide complex formed, allowing current to flow within this film. Under specific conditions the cavities and randomly dispersed pores can align in the direction of the applied electric field and link up to generate an array of tubes, where the passage of ions and water is optimised. We also suggest that oxygen evolution at the anode may play a role in the development of the nano-tubes.
机译：本文介绍了通过电子显微镜对钛在含氟电解质中进行阳极氧化而形成的二氧化钛纳米管的宏观，微观和纳米结构的电子显微镜研究。扫描电子显微镜（SEM）用于检查在恒电位条件下形成的纳米管的整体结构。透射电子显微镜（TEM）已用于在相对较短的时间内（30分钟）检查经过阳极氧化的样品的氧化物层的结构，并为二氧化钛纳米管的形成提供了新的见识。氟离子能够使钛金属上的位置成核，并在形成的氧化物络合物中产生一系列相互连接的空腔或孔，从而使电流在该膜内流动。在特定条件下，空腔和随机分布的孔可以在施加的电场方向上对齐并连接以生成一系列管，其中离子和水的通道得到优化。我们还建议在阳极处放出氧气可能在纳米管的发展中起作用。

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  • 来源
    《Journal of Materials Science》 |2007年第16期|6729-6734|共6页
  • 作者

    Angkhana Jaroenworaluck; Domenico Regonini; Chris R. Bowen; Ron Stevens; Duncan Allsopp;

  • 作者单位

    MTEC: National Metal and Materials Technology Center 114 Thailand Science Park Paholyothin Rd. Klong 1 Klong Luang Pathumthani 12120 Thailand;

    Materials Research Centre Department of Mechanical Engineering University of Bath Claverton Down Road Bath BA2 7AY UK;

    Materials Research Centre Department of Mechanical Engineering University of Bath Claverton Down Road Bath BA2 7AY UK;

    Materials Research Centre Department of Mechanical Engineering University of Bath Claverton Down Road Bath BA2 7AY UK;

    Department of Electronic ampamp Electrical Engineering University of Bath Claverton Down Road Bath BA2 7AY UK;

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