Journal of Materials Research and Technology Journal of Materials Research and Technology
J Mater Res Technol 2013;2:68-74 DOI: 10.1016/j.jmrt.2013.03.004
Review Article
Cubic boron nitride competing with diamond as a superhard engineering material – an overview
Sergio Neves Monteiroa,, , Ana Lúcia Diegues Skuryb, Márcia Giardinieri de Azevedob, Guerold Sergueevitch Bobrovnitchiib
a Instituto Militar de Engenharia (IME), Materials Science Department, Rio de Janeiro, RJ, Brazil
b Universidade Federal do Norte Fluminense, Laboratory of Superhard Materials (UENF/LAMAV), Campos dos Goytacazes, RJ, Brazil
Received 15 August 2012, Accepted 28 January 2013
Abstract

Since the synthesis of the boron nitride in its cubic crystallographic structure, cBN, a material with exceptionally high hardness and special properties was developed for technical engineering applications. For practical use, cBN is, after diamond, the second known hardest material and is today being increasingly used as cutting and drilling tools in substitution for diamond-based tools owing to superior thermal stability and chemical inertness. In this study, the advances in the use of the cBN competing with diamond as a superhard industrial tooling for petroleum extraction, automobile manufacture and other engineering applications, was reviewed. The properties of both single crystals and polycrystalline cBN in the form of composites and thin films were assessed to characterize the possibilities of a next generation of superhard materials to replace diamond in tool and other technological devices.

Keywords
Cubic boron nitride, Superhard materials, Industrial tools, Engineering applications
J Mater Res Technol 2013;2:68-74 DOI: 10.1016/j.jmrt.2013.03.004