carbure de bore
- Domaine
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- chimiechimie minérale
- Date
Définition :
Petits cristaux noirs à reflets métalliques.
Note :
Emplois : abrasif; découpage du verre; du carborundum, des pierres, céramiques, matières plastiques; travail du diamant; filières à tungstène; électrodes de lampes à arc.
Terme :
- carbure de bore n. m.
Traductions
-
anglais
Date :Définition
An extremely hard, high-melting solid, m.p. 2450 °C (4442 °F); its formula is usually given as B4C, but it may be a solid solution resulting from electric furnace heating of boron oxide and carbon. It is used as control rods in nuclear reactors, as a polishing agent and abrasive, as nozzles for sandblast equipment, and as high-strength fibers for composite structures for aerospace applications.
Terme :
- boron carbide