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Spalling in Sapphire in Different Crystallographic Directions under Shock Compression

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Abstract

The tensile strength of single-crystal sapphire specimens with c, a, d, r, n, s, g, and m crystallographic orientations (c-, a-, d-, r-, n-, s-, g-, and m-axis specimens) has been measured under shock compression in the stress range of 15–20 GPa. It has been found that the spall strength depends on shock direction and maximum compression strength. The spall strength is greatest, ~12–13 GPa, in m- and a-axis sapphire specimens when the maximum shock stress equals 16 GPa.

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Funding

This study was done in the framework of state project no. 0089-2019-0001 (state registration number AAA-A19-119071190040-5) using equipment from the Moscow Region Explosive Center for Collective Use.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Russia

    I. A. Cherepanov, A. S. Savinykh & S. V. Razorenov

  2. Moscow State University, 119991, Moscow, Russia

    I. A. Cherepanov & S. V. Razorenov

Authors
  1. I. A. Cherepanov
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  2. A. S. Savinykh
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  3. S. V. Razorenov
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Corresponding author

Correspondence to A. S. Savinykh.

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The authors declare that they have no conflicts of interest.

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Translated by V. Isaakyan

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Cherepanov, I.A., Savinykh, A.S. & Razorenov, S.V. Spalling in Sapphire in Different Crystallographic Directions under Shock Compression. Tech. Phys. 65, 921–924 (2020). https://doi.org/10.1134/S1063784220060067

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  • DOI: https://doi.org/10.1134/S1063784220060067

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