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Ultrahard polycrystalline diamond from graphite

Author

Listed:
  • Tetsuo Irifune

    (Geodynamics Research Center, Ehime University)

  • Ayako Kurio

    (Geodynamics Research Center, Ehime University)

  • Shizue Sakamoto

    (Geodynamics Research Center, Ehime University)

  • Toru Inoue

    (Geodynamics Research Center, Ehime University)

  • Hitoshi Sumiya

    (Itami Research Laboratories, Sumitomo Electric Industries)

Abstract

Polycrystalline diamonds are harder and tougher than single-crystal diamonds and are therefore valuable for cutting and polishing other hard materials, but naturally occurring polycrystalline diamond is unusual and its production is slow. Here we describe the rapid synthesis of pure sintered polycrystalline diamond by direct conversion of graphite under static high pressure and temperature. Surprisingly, this synthesized diamond is ultrahard and so could be useful in the manufacture of scientific and industrial tools.

Suggested Citation

  • Tetsuo Irifune & Ayako Kurio & Shizue Sakamoto & Toru Inoue & Hitoshi Sumiya, 2003. "Ultrahard polycrystalline diamond from graphite," Nature, Nature, vol. 421(6923), pages 599-600, February.
    • Handle: RePEc:nat:nature:v:421:y:2003:i:6923:d:10.1038_421599b
    DOI: 10.1038/421599b
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    Cited by:

    1. Yao Tang & Haikuo Wang & Xiaoping Ouyang & Chao Wang & Qishan Huang & Qingkun Zhao & Xiaochun Liu & Qi Zhu & Zhiqiang Hou & Jiakun Wu & Zhicai Zhang & Hao Li & Yikan Yang & Wei Yang & Huajian Gao & Ha, 2024. "Overcoming strength-ductility tradeoff with high pressure thermal treatment," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Mingfeng Liu & Jiantao Wang & Junwei Hu & Peitao Liu & Haiyang Niu & Xuexi Yan & Jiangxu Li & Haile Yan & Bo Yang & Yan Sun & Chunlin Chen & Georg Kresse & Liang Zuo & Xing-Qiu Chen, 2024. "Layer-by-layer phase transformation in Ti3O5 revealed by machine-learning molecular dynamics simulations," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    3. Xuesong Yang & Linfeng Lan & Liang Li & Xiaokong Liu & Panče Naumov & Hongyu Zhang, 2022. "Remote and precise control over morphology and motion of organic crystals by using magnetic field," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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