TERMIUM Plus®

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DURETE ABRASIF [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-04-21

English

Subject field(s)
  • Economic Geology
  • Mineralogy
  • Ground-Drilling Facilities (Mining)
DEF

Cryptocrystalline material composed of diamond. It is compact, opaque, dark gray to black, lacking cleavage planes and very tough. Usually occurs in rounded masses, but is also found in angular broken pieces. Principal source is the State of Bahia, Brazil, but it occurs occasionally elsewhere in South America and in Africa. It was formerly in demand for diamond-drill bits.

French

Domaine(s)
  • Géologie économique
  • Minéralogie
  • Installations de forage minier
DEF

Variété impure de diamant noir, employé comme abrasif.

CONT

Plusieurs variétés de diamant peuvent être distinguées: 1) le diamant [...] 2) le ballas ou short bort [...] 3) le carbonado, fragments noirs, grenus à compacts, de la grosseur d’un pois et d’aspect de coke.

CONT

Le bort et le carbonado ont des applications [...] importantes pour leur dureté(têtes de forages et abrasif). Ce sont eux qui l'emportent sur le plan industriel.

Key term(s)
  • diamant noir industriel

Spanish

Save record 1

Record 2 1996-10-17

English

Subject field(s)
  • Strength of Materials
  • Lubrication Technology
  • Aluminum
DEF

Hardness expressed in quantitative terms or numbers indicating the degree to which a substance resists being worn away for frictional contact with an abrasive material, such as silica or carborundum grits.

French

Domaine(s)
  • Résistance des matériaux
  • Tribologie
  • Aluminium
OBS

Arvida.

Spanish

Save record 2

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