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Diamond synthesis in graphite/nickel composite powders subjected to shock compression

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Abstract

Characterization of graphite/nickel composite powders subjected to high-pressure shock-wave compression was performed using optical and transmission electron microscopy. Unique spherulites of graphite were observed in the nickel matrix of those specimens in which the nickel apparently melted under the shock-wave loading. The morphology of these spherulites resembles that of nodular graphite found in cast iron. Evidence of diamond formation was found both at the centre of spherulites (polycrystalline) as well as in the remaining graphite flakes (single crystal).

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Authors and Affiliations

  1. Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina, USA

    I. Simonsen & S. Chevacharoenkul

  2. Department of Civil Engineering, North Carolina State University, Raleigh, North Carolina, USA

    Y. Horie

  3. Research and Development Division, Toshiba Tangaloy, Kawasaki, Japan

    T. Akashi

  4. Research Laboratory of Engineering Materials, Tokyo Institute of Technology, Yokohama, Japan

    H. Sawaoka

Authors
  1. I. Simonsen
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  2. S. Chevacharoenkul
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  3. Y. Horie
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  4. T. Akashi
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  5. H. Sawaoka
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Simonsen, I., Chevacharoenkul, S., Horie, Y. et al. Diamond synthesis in graphite/nickel composite powders subjected to shock compression. J Mater Sci 24, 1486–1490 (1989). https://doi.org/10.1007/BF02397090

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  • DOI: https://doi.org/10.1007/BF02397090

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