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boron carbide

noun, Chemistry
a black, crystalline, extremely hard, water-insoluble solid, B 4 C, used chiefly as a moderator in nuclear reactors, as an abrasive, and as a refractory. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for boron carbide
  • boron carbide is used in military personnel body armor.
  • The atomic thickness of boron carbide deposits on the individual tubes is critical to the efficiency of the overall detector.
  • For the boron carbide system in particular, significant enhancements in both strength and toughness were achieved.
British Dictionary definitions for boron carbide

boron carbide

a black extremely hard inert substance having a high capture cross section for thermal neutrons. It is used as an abrasive and refractory and in control rods in nuclear reactors. Formula: B4C
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for boron carbide

(B4C), crystalline compound of boron and carbon. It is an extremely hard, synthetically produced material that is used in abrasive and wear-resistant products, in lightweight composite materials, and in control rods for nuclear power generation

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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