Improved metal matrix composite

C - Chemistry – Metallurgy – 22 – C

Patent

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Details

C22C 32/00 (2006.01) A61L 27/04 (2006.01) C22C 14/00 (2006.01) C22C 21/00 (2006.01) C22C 23/00 (2006.01) H01L 23/373 (2006.01) H01M 2/02 (2006.01) H01M 4/86 (2006.01)

Patent

CA 2205967

An improved metal matrix composite utilizes boron carbide as a ceramic additive to a base material metal. The base material metal is aluminum, magnesium, or titanium, or an alloy thereof, provided in powder form with the balance of the material comprising various trace metals such as chromium, copper, iron, magnesium, silicon, titanium, and zinc. The boron carbide powder comprises 10 to 30% by weight of the metal matrix composition. There is at least one ether metal additive. The compositions are useful in a variety of applications where lightweight, strength, stiffness, hardness, and low density are desirable. The compositions are extrudable and weldable.

Un matériau à matrice métallique amélioré comprend un matériau de base métallique et, comme additif céramique, du carbure de bore. Le métal, qui peut être l'aluminium, le magnésium ou le titane, ou un alliage de ceux-ci, se présente sous forme de poudre, le solde étant constitué de divers métaux à l'état de traces, tels que le chrome, le cuivre, le fer, le magnésium, le silicium, le titane et le zinc. La poudre de carbure de bore représente 10 à 30 % en poids de la composition à matrice métallique, qui comporte au moins un autre additif métallique. Ces compositions sont intéressantes dans une grande variété d'applications où l'on recherche la légèreté, la résistance, la rigidité, la dureté et la faible densité. Elles peuvent être extrudées et soudées.

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