SEARCH

SEARCH BY CITATION

Keywords:

  • Boron;
  • Composite materials;
  • Polycrystalline materials;
  • Superhard materials;
  • Synthesis
Thumbnail image of graphical abstract

A one-step sintering process is developed to prepare nanostructured super-hard B6O?B4C compacts (see figure) from a mixture of B, B2O3, and B4C precursors at a mild pressure of ∼3GPa and high temperatures ranging from 1500–1900 K. The sintered B6O–B4C compacts exhibit hardness values comparable to commercially available polycrystalline BN and are used for the high-speed cutting of hardened steel.