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Shock Response of Full Density Nanopolycrystalline Diamond.
Katagiri, Kento; Ozaki, Norimasa; Umeda, Yuhei; Irifune, Tetsuo; Kamimura, Nobuki; Miyanishi, Kohei; Sano, Takayoshi; Sekine, Toshimori; Kodama, Ryosuke.
Affiliation
  • Katagiri K; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan.
  • Ozaki N; Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan.
  • Umeda Y; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan.
  • Irifune T; Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan.
  • Kamimura N; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan.
  • Miyanishi K; Institute for Planetary Materials, Okayama University, Tottori 682-0193, Japan.
  • Sano T; Geodynamics Research Center, Ehime University, Ehime 790-0826, Japan.
  • Sekine T; Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo 145-0061, Japan.
  • Kodama R; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan.
Phys Rev Lett ; 125(18): 185701, 2020 Oct 30.
Article in En | MEDLINE | ID: mdl-33196243
ABSTRACT
Hugoniot of full-dense nanopolycrystalline diamond (NPD) was investigated up to 1600 GPa. The Hugoniot elastic limit of NPD is 208 (±14) GPa, which is more than twice as high as that of single-crystal diamond. The Hugoniot of NPD is stiffer than that of single-crystal diamond up to 500 GPa, while no significant difference is observed at higher pressures where the elastic precursor is overdriven by a following plastic wave. These findings confirm that the grain boundary strengthening effect recognized in static compression experiments is also effective against high strain-rate dynamic compressions.
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Full text: 1 Database: MEDLINE Language: En Year: 2020 Type: Article
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Full text: 1 Database: MEDLINE Language: En Year: 2020 Type: Article