TY - JOUR
T1 - Shock Response of Full Density Nanopolycrystalline Diamond
AU - Katagiri, Kento
AU - Ozaki, Norimasa
AU - Umeda, Yuhei
AU - Irifune, Tetsuo
AU - Kamimura, Nobuki
AU - Miyanishi, Kohei
AU - Sano, Takayoshi
AU - Sekine, Toshimori
AU - Kodama, Ryosuke
N1 - Funding Information:
We thank the GEKKO technical staff for their support during these experiments and Toru Shinmei of GRC for synthesis of NPD. We also thank J. Lintz for valuable comments on the manuscript. The experiments were conducted under the joint research of the Institute of Laser Engineering, Osaka University, Japan. This work was supported by grants from MEXT Quantum Leap Flagship Program (MEXT Q-LEAP) Grant No. JPMXS0118067246, Japan Society for the Promotion of Science (JSPS) KAKENHI (Grants No. 19K21866 and No. 16H02246), and Genesis Research Institute, Inc. (Konpon-ken, Toyota). The NPD sample fabrication was conducted under the support of Joint Research Center Premier Research Institute for Ultrahigh-pressure Science (PRIUS), Ehime University, Japan. We also acknowledge partial support by Center for High-Pressure Science and Technology Advanced Research (HPSTAR), China.
Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/10/28
Y1 - 2020/10/28
N2 - 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.
AB - 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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U2 - 10.1103/PhysRevLett.125.185701
DO - 10.1103/PhysRevLett.125.185701
M3 - Article
C2 - 33196243
AN - SCOPUS:85094908869
SN - 0031-9007
VL - 125
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 185701
ER -