中国物理B ›› 2016, Vol. 25 ›› Issue (6): 68104-068104.doi: 10.1088/1674-1056/25/6/068104

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Generalized model for laser-induced surface structure in metallic glass

Lin-Mao Ye(叶林茂), Zhen-Wei Wu(武振伟), Kai-Xin Liu(刘凯欣), Xiu-Zhang Tang(汤秀章), Xiang-Ming Xiong (熊向明)   

  1. 1 LTCS and Department of Mechanics & Engineering Science, College of Engineering, Peking University, Beijing 100871, China;
    2 Center for Applied Physics and Technology, Peking University, Beijing 100871, China;
    3 China Institute of Atomic Energy, Beijing 102413, China
  • 收稿日期:2015-12-17 修回日期:2016-02-23 出版日期:2016-06-05 发布日期:2016-06-05
  • 通讯作者: Kai-Xin Liu E-mail:kliu@pku.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 10572002, 10732010, and 11332002).

Generalized model for laser-induced surface structure in metallic glass

Lin-Mao Ye(叶林茂)1, Zhen-Wei Wu(武振伟)1,2, Kai-Xin Liu(刘凯欣)1,2, Xiu-Zhang Tang(汤秀章)3, Xiang-Ming Xiong (熊向明)1   

  1. 1 LTCS and Department of Mechanics & Engineering Science, College of Engineering, Peking University, Beijing 100871, China;
    2 Center for Applied Physics and Technology, Peking University, Beijing 100871, China;
    3 China Institute of Atomic Energy, Beijing 102413, China
  • Received:2015-12-17 Revised:2016-02-23 Online:2016-06-05 Published:2016-06-05
  • Contact: Kai-Xin Liu E-mail:kliu@pku.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 10572002, 10732010, and 11332002).

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摘要：

The details of the special three-dimensional micro-nano scale ripples with a period of hundreds of microns on the surfaces of a Zr-based and a La-based metallic glass irradiated separately by single laser pulse are investigated. We use the small-amplitude capillary wave theory to unveil the ripple formation mechanism through considering each of the molten metallic glasses as an incompressible viscous fluid. A generalized model is presented to describe the special morphology, which fits the experimental result well. It is also revealed that the viscosity brings about the biggest effect on the monotone decreasing nature of the amplitude and the wavelength of the surface ripples. The greater the viscosity is, the shorter the amplitude and the wavelength are.

关键词: metallic glasses, pulse laser processing, micro-nano scale surface structure, viscosity

Abstract:

The details of the special three-dimensional micro-nano scale ripples with a period of hundreds of microns on the surfaces of a Zr-based and a La-based metallic glass irradiated separately by single laser pulse are investigated. We use the small-amplitude capillary wave theory to unveil the ripple formation mechanism through considering each of the molten metallic glasses as an incompressible viscous fluid. A generalized model is presented to describe the special morphology, which fits the experimental result well. It is also revealed that the viscosity brings about the biggest effect on the monotone decreasing nature of the amplitude and the wavelength of the surface ripples. The greater the viscosity is, the shorter the amplitude and the wavelength are.

Key words: metallic glasses, pulse laser processing, micro-nano scale surface structure, viscosity

中图分类号:  (Micro- and nanoscale pattern formation)

  • 81.16.Rf
81.05.Kf (Glasses (including metallic glasses)) 66.20.Cy (Theory and modeling of viscosity and rheological properties, including computer simulation) 81.15.Fg (Pulsed laser ablation deposition)