Shear Modulus of Polycrystalline Rhenium Diboride Determined from Surface Brillouin Spectroscopy

Authors

  • Sergey N. Tkachev,

    1. Department of Physics & Astronomy, University of Nevada Las Vegas Las Vegas, NV 89154-4002 (USA)
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  • Jonathan B. Levine,

    1. Department of Chemistry and Biochemistry, University of California Los Angeles, CA 90095-1569 (USA)
    2. Department of Materials Science, University of California Los Angeles, CA 90095-1569 (USA)
    3. California NanoSystems Institute, University of California Los Angeles, CA 90095-1569 (USA)
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  • Alexander Kisliuk,

    1. Department of Polymer Science, University of Akron Akron, OH 44325-3909 (USA)
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  • Alexei P. Sokolov,

    1. Department of Polymer Science, University of Akron Akron, OH 44325-3909 (USA)
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  • Shuqi Guo,

    1. Composites Group, National Institute for Materials Science 1-2-1 Sengen, Tsukuba, Ibaraki 3050047 (Japan)
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  • Justin T. Eng,

    1. Department of Chemistry and Biochemistry, University of California Los Angeles, CA 90095-1569 (USA)
    2. Department of Materials Science, University of California Los Angeles, CA 90095-1569 (USA)
    3. California NanoSystems Institute, University of California Los Angeles, CA 90095-1569 (USA)
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  • Richard B. Kaner

    Corresponding author
    1. Department of Chemistry and Biochemistry, University of California Los Angeles, CA 90095-1569 (USA)
    2. Department of Materials Science, University of California Los Angeles, CA 90095-1569 (USA)
    3. California NanoSystems Institute, University of California Los Angeles, CA 90095-1569 (USA)
    • Department of Chemistry and Biochemistry, University of California Los Angeles, CA 90095-1569 (USA).
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Abstract

original image

Surface Brillouin specotroscopy of a densified powder compact of rhenium diboride (see scanning electron microscopy image) results in a determined shear modulus of 223 GPa. This value is comparable to the shear modulus of c-BC2N and provides evidence for the superhard nature of ReB2.

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