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Material surface modification by pulsed ion beam

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Abstract

A new technique utilizing a high-power-density pulsed ion beam for modification of material surfaces is presented. The power density of the pulsed ion beam ranges between 104 and 107 wcm−2, the kinetic energy is 1 to 5 KeV, the deposition energy is of the order of 1 to 10Jcm−2 and the pulsed duration is about 60μsec. The post-treatment samples were analysed using Auger electron spectroscopy, scanning electron microscopy, X-ray diffractometry, and Vicker's microhardness tester. It is found that the concentration of the injected particles has a Gaussian distribution. The thermal zone induced by the fast heating-cooling process forms a white-bright layer, indicating that there are new carbides and nitrides produced in the surface layer, which increases the microhardness of the surface.

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Authors and Affiliations

  1. Institute of Fluid Mechanics, Beijing University of Aeronautics and Astronautics, Beijing, People's Republic of China

    Z. G. Shen & C. H. Lee

  2. Institute of Physics, Academia Sinica, Beijing, People's Republic of China

    C. Wu, D. Y. Jiang & S. Z. Yang

Authors
  1. Z. G. Shen
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  2. C. H. Lee
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  3. C. Wu
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  4. D. Y. Jiang
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  5. S. Z. Yang
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Shen, Z.G., Lee, C.H., Wu, C. et al. Material surface modification by pulsed ion beam. J Mater Sci 25, 3139–3141 (1990). https://doi.org/10.1007/BF00587663

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  • DOI: https://doi.org/10.1007/BF00587663

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