Effect of Ultraviolet Light Irradiation on Structure and Electrochemical Properties of Iron Surface

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概要

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• The effect of ultraviolet light (UV) irradiation (254 nm, 0.8 mW/cm2) on air-formed oxide films and passivated films on iron was investigated by electrochemical methods and scanning tunneling microscopy (STM), in particular with respect to surface micro/nanostructures and the surface protective property. An as-deposited film appeared uniformly flat after UV irradiation for 2–4 h, which is associated with a decrease in current density. UV irradiation for 1–4 h assisted N-dodecylhydroxamic acid (DHA) molecules to strongly bond to the air-formed oxide film. UV irradiation for 1 h led to the formation of a flat terrace of atomic resolution on a surface passivated at 800 mV for 15 min. However, it was difficult to observe a terrace wider than 3 nm on the passive film irradiated for 4 h.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2005-01-15

著者

• Deng Huihua

  Nanotechnology Research Institute Aist

• SUZUKI Toshishige

  Laboratory for Membrane Chemistry, AIST

• OCONER Irmin

  Metals Industry Research & Development Center, MIRDC Compound

• ISHIKAWA Ikuo

  Laboratory for Membrane Chemistry, AIST Tohoku, National Institute of Advanced Industrial Science an

• Nanjo Hiroshi

  Laboratory For Membrane Chemistry Aist Tohoku National Institute Of Advanced Industrial Science And

• Nanjo Hiroshi

  Laboratory for Membrane Chemistry, AIST Tohoku, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-ku, Sendai 983-8551, Japan

• Deng Huihua

  Nanotechnology Research Institute, AIST Tsukuba Central 4, Tsukuba 305-8562, Japan

• Suzuki Toshishige

  Laboratory for Membrane Chemistry, AIST Tohoku, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-ku, Sendai 983-8551, Japan

• Ishikawa Ikuo

  Laboratory for Membrane Chemistry, AIST Tohoku, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-ku, Sendai 983-8551, Japan

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