Nanotwinned diamond with unprecedented hardness and stability

  title={Nanotwinned diamond with unprecedented hardness and stability},
  author={Q. Huang and D. Yu and Bo Xu and Wentao Hu and Y. Ma and Y. Wang and Zhisheng Zhao and B. Wen and J. He and Zhongyuan Liu and Yongjun Tian},
  • Q. Huang, D. Yu, +8 authors Yongjun Tian
  • Published 2014
  • Materials Science, Medicine
  • Nature
  • Although diamond is the hardest material for cutting tools, poor thermal stability has limited its applications, especially at high temperatures. Simultaneous improvement of the hardness and thermal stability of diamond has long been desirable. According to the Hall−Petch effect, the hardness of diamond can be enhanced by nanostructuring (by means of nanograined and nanotwinned microstructures), as shown in previous studies. However, for well-sintered nanograined diamonds, the grain sizes are… CONTINUE READING
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