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ALLIAGE BLANC [1 record]

Record 1 2002-04-18

English

Subject field(s)
  • Nonferrous Metals and Alloys - Various
  • Lubrication Technology
DEF

A metal from which engine bearings are made, consisting primarily of tin, copper, and antimony.

CONT

Babbitt metal, which ... has very low friction, may be made of: (1) high-tin alloys that are substantially lead-free; (2) intermediate alloys in which some tin is replaced by lead; and (3) high-lead alloys. All are low-melting materials consisting of hard compounds in a soft matrix.

French

Domaine(s)
  • Métaux et alliages non ferreux divers
  • Tribologie
DEF

Alliage antifriction de couleur claire, à base de plomb ou d'étain avec addition de cuivre et d'antimoine.

CONT

Dès les premières machines mécaniques ou à vapeur, on utilisa, pour résoudre les problèmes de frottement, le bois, le bronze ou la fonte. À partir de 1840, sir Isaac Babbitt, en Angleterre, préconisa pour cet usage des alliages à base d'étain contenant de 5 à 10 % d'antimoine, avec éventuellement de 1 à 15 % de plomb et de 2 à 10 % de cuivre. Ces alliages à base de plomb ou d'étain sont souvent appelés alliages blancs.

Spanish

Campo(s) temático(s)
  • Metales y aleaciones no ferrosos - Varios
  • Técnica de lubricación
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