boron carbide


Also found in: Encyclopedia, Wikipedia.

boron carbide

n.
A compound of boron and carbon, especially B4C, an extremely hard, black crystalline compound. It is used as an abrasive, in control rods for nuclear reactors, and as a reinforcing filament in composite structural materials.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

boron carbide

n
(Elements & Compounds) a black extremely hard inert substance having a high capture cross section for thermal neutrons. It is used as an abrasive, refractory, and in control rods in nuclear reactors. Formula: B4C
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Mentioned in ?
References in periodicals archive ?
thick boron carbide concrete layer," adds Essroc Cement Territory Manager Marie Derby, based at the company's Newport News terminal.
The boron element is used in applications including boronated fiberglass, borosilicate glass, boron carbide ceramic, high-hardness and abrasive compounds, boron metal coatings, detergent formulations and bleaching agents, insecticides, semiconductors, magnets, shielding and neutron absorbers in nuclear reactors, other nonmedical uses, pharmaceutical and biological applications, and research areas.
Ltd., Borax Argentina, Manufacturas Los Andes, Searles Valley Minerals, Mudanjiang Jingangzuan Boron Carbide and ETI mines.
For example, a ceramic plate made out of boron carbide is about one third the weight of steel, he noted.
Boron carbide is a very hard material that provides excellent resistance to abrasive wear.
Prospective reinforcing fillers for high-strength and high-modulus fibrous CM are filamentary crystals of aluminum oxide and nitride, silicon carbide and nitride, boron carbide, etc.
Located in the back wall of the cabinet is the encased arm of an ABB foundry plus robot, equipped with a boron carbide blast nozzle which it precisely manipulates around the fixtured components.
Ti[B.sub.2] can also be prepared by reduction ofTi[O.sub.2] by boron carbide ([B.sub.4]C) and carbon as follows [37]:
Boron carbide is covalent carbide, which presents some of the best physical and chemical properties.
In our work on MMC the Aluminium 6061 occupies the matrix phase, Boron carbide and the M-Sand occupies the reinforcement phase which is prepared by using the stir casting method.
Boriding of titanium can be done in a vacuum furnace in powders of amorphous boron or in the vessel in a melt of borax with or without electrolysis, or in a powder of 84% boron carbide and 16% borax in a hydrogen flow.