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Morphology and composition on Al surface irradiated by femtosecond laser pulses

机译：飞秒激光脉冲辐照在铝表面的形貌和成分

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摘要

We study the surface chemicals and structures of aluminum plates irradiated by scanning femtosecond laser pulses in air for a wide range of laser fluence from 0.38 to 33.6 J/cm~2. X-ray photoelectron spec-troscopy and X-ray diffraction analyses indicate clearly that crystalline anorthic Al(0H)3 is formed under femtosecond laser pulse irradiation. Besides aluminum hydroxide, crystalline αAl_2O_3 is also found in the samples irradiated at high laser fluence. Field emission scanning electron microscopy demonstrates that the surfaces of the samples irradiated with low laser fluence are colloidal-like and that nanoparticles with a few nanometers in size are embedded in glue-like substances. For high laser fluence irradiated samples, the surfaces are highly porous and covered by nanoparticles with uniform size of less than 20 nm.
机译：我们研究了通过在空气中扫描飞秒激光脉冲在0.38至33.6 J / cm〜2的宽激光通量下辐照的铝板的表面化学物质和结构。 X射线光电子能谱和X射线衍射分析清楚地表明，在飞秒激光脉冲辐照下会形成结晶的花粉Al（0H）3。除氢氧化铝外，在以高激光通量辐照的样品中还发现了晶体αAl_2O_3。场发射扫描电子显微镜表明，被低激光通量辐照的样品表面是胶体状的，并且几纳米大小的纳米粒子被嵌入胶状物质中。对于高激光通量辐照的样品，其表面是高度多孔的，并被小于20 nm的均匀尺寸的纳米颗粒覆盖。

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  • 来源
    《Applied Surface Science》 |2010年第13期|p.4344-4349|共6页
  • 作者

    Xiaohong Li; Chunhua Yuan; Hongdao Yang; Jiawen Li; Wenhao Huang; Duochang Tang; Qin Xu;

  • 作者单位

    School of Science, Southwest University of Science and Technology, Mianyang 621010, China Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China;

    School of Science, Southwest University of Science and Technology, Mianyang 621010, China;

    School of Science, Southwest University of Science and Technology, Mianyang 621010, China;

    Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China;

    Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China;

    School of Science, Southwest University of Science and Technology, Mianyang 621010, China;

    School of Science, Southwest University of Science and Technology, Mianyang 621010, China;

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  • 正文语种 eng
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  • 关键词

    aluminum; femtosecond pulsed laser; oxidation;

    机译：铝;飞秒脉冲激光氧化;

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