Copper-based alloys and their use for infiltration of powder...

B - Operations – Transporting – 22 – F

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B22F 7/08 (2006.01) C22C 9/04 (2006.01) C22C 9/05 (2006.01) C22F 1/08 (2006.01)

Patent

CA 2597064

Described are wrought forms of copper alloys (20) for infiltrating powder metal parts (1), the method for preparing the copper alloys and their wrought forms, the method for their infiltration into a powder metal part, and the infiltrated metal part infiltrated with the novel alloys having a generally uniform distribution throughout and exhibiting high transverse rupture strength, tensile strength and yield strength. Infiltrated metal parts prepared by infiltrating powder metal parts with reduced amounts of the novel infiltrant typically weigh less and have superior strengths compared to similarly prepared infiltrated metal parts prepared with standard methods and conventional infiltration.

L'invention concerne des formes corroyées d'alliages de cuivre pour infiltrer des éléments de métal pulvérulent, un procédé pour préparer les alliages de cuivre et leurs formes corroyées, un procédé pour les infiltrer dans un élément de métal pulvérulent, un élément de métal infiltré au moyen de ces nouveaux alliages ayant une répartition généralement uniforme du cuivre et présentant une résistance élevée en termes de résistance à la rupture transversale, de résistance à la traction et de limite élastique. Selon l'invention, des éléments métalliques infiltrés préparés par infiltration d'éléments de métal pulvérulent, dont la quantité de produit d'infiltration est réduite, ont un poids généralement inférieur et des résistances supérieures, comparativement à des éléments métalliques infiltrés préparés de manière similaire selon des procédés usuels et par infiltration classique.

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