Publication

Les laitons au bismuth : une alternative aux laitons au plomb ?

Andreas Mortensen
2006
Talks

Abstract

Les normes environnementales régissant la production et l’utilisation d’alliages contenant du plomb réduisent régulièrement les teneurs en plomb autorisées. Dans le cas des laitons utilisés en plomberie, le plomb ajouté afin de faciliter l’usinage du matériau doit être remplacé par un autre élément (non toxique) conduisant également à une excellente usinabilité. Les laitons au bismuth représentent une alternative potentielle. Les propriétés mécaniques des deux laitons suivants sont ainsi comparées à l’aide d’essais de traction : CuZn29Pb1 et CuZn29Bi1. Si ces propriétés sont comparables à la température ambiante, le laiton au bismuth présente une résistance mécanique et une ductilité très nettement inférieures à celles du laiton au plomb lorsque les essais sont effectués à 400°C, température à laquelle le plomb et le bismuth sont tous deux liquides. Cette réduction des propriétés mécaniques peut être reliée aux différences constatées sur les microstructures des deux alliages susnommés.

Official source

https://infoscience.epfl.ch/entities/publication/4aa42068-92fb-4430-a1c9-8040d8cf6255

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Andreas Mortensen
2006
Talks

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/4aa42068-92fb-4430-a1c9-8040d8cf6255

About this result

Related concepts (2)

Denis Bérardier

Denis Bérardier (1735–1794) was a French priest and theologian. He was born at Quimper, in Brittany 26 March 1735 and died at Paris 1 May 1794. He was one of the deputies from the Paris clergy to the Estates-General of 1789. Bérardier was raised by his grandfather Pierre Bousquet, who had been the founder of the Quimper pottery in 1708. He attended the Jesuit college at Quimper, and then the Sorbonne, where he obtained a doctorate in theology. After the expulsion of the Jesuits from France in 1762, he was appointed Principal of the college at Quimper.

Dezallier d'Argenville

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