boron carbide abrasive

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• boron carbide — n. a black, crystalline compound of boron and carbon, B4C, almost as hard as diamond: used as an abrasive and in control rods for nuclear reactors: see MOHS SCALE (sense 2) …   English World dictionary

• boron carbide — Chem. a black, crystalline, extremely hard, water insoluble solid, B4C, used chiefly as a moderator in nuclear reactors, as an abrasive, and as a refractory. * * * ▪ chemical compound       (B4C), crystalline compound of boron and carbon. It is… …   Universalium

• boron carbide — noun : any binary compound of boron and carbon; especially : a refractory shiny black crystalline solid B4C ranking next to the diamond in hardness made usually by heating boric oxide and coke in an electric furnace and used chiefly as powdered… …   Useful english dictionary

• boron carbide — a compound, B4C, slightly harder than silicon carbide (q.v.), obtained by heating boron at very high temperature to effect its union with carbon; used as a neutron absorber in nuclear reactors, and as an abrasive agent in industry and dentistry …   Medical dictionary

• boron carbide — /bɔrɒn ˈkabaɪd / (say bawron kahbuyd) noun a black crystalline solid, B4C, which is the hardest known substance after diamond, and which is used as an abrasive and to form control rods in nuclear reactors …  

• Boron nitride — IUPAC name Boron nitride Identifiers …   Wikipedia

• carbide — /kahr buyd, bid/, n. 1. a compound of carbon with a more electropositive element or group. 2. See calcium carbide. 3. a very hard mixture of sintered carbides of various heavy metals, esp. tungsten carbide, used for cutting edges and dies. [1860… …   Universalium

• boron — boronic /boh ron ik, baw , beuh /, adj. /bawr on, bohr /, n. Chem. a nonmetallic element occurring naturally only in combination, as in borax or boric acid, and obtained in either an amorphous or a crystalline form when reduced from its compounds …   Universalium

• Abrasive blasting — Sandblasting a stone wall Diesel powered compressor used as an air supply for sandblasting …   Wikipedia

• Abrasive machining — is a manufacturing process where material is removed from a workpiece using a multitude of small abrasive particles. Common examples include grinding, honing, and polishing. Abrasive processes are usually expensive, but capable of tighter… …   Wikipedia

• Abrasive — An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, reflective surface …   Wikipedia