Magnesium alloy

C - Chemistry – Metallurgy – 22 – C

Patent

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Details

C22C 23/02 (2006.01) C22B 4/06 (2006.01) C22B 7/00 (2006.01)

Patent

CA 2615835

The invention relates to the development of a corrosion-resistant magnesium secondary alloy. In the field of magnesium metallurgy, no secondary alloys have existed up to now unlike with other metals such as aluminum. Magnesium alloys are corrosion-resistant if the contents of copper, nickel and iron are very low. A recycling of obsolete scrap with the aim of producing structural parts once again has not been possible up to now since too much copper and nickel is contained in this scrap. According to the invention, this problem is resolved by developing a novel magnesium secondary alloy that, despite having high contents of copper, nickel, iron and silicon, has the same corrosion properties as pure magnesium alloys.

L'invention porte sur l'élaboration d'un alliage secondaire de magnésium résistant à la corrosion. Dans le domaine de la métallurgie du magnésium, il n'existe pas pour l'instant d'alliages secondaires comme il en existe pour d'autres métaux, tels que l'aluminium. Les alliages de magnésium résistent à la corrosion lorsque les teneurs en cuivre, en nickel et en fer sont très faibles. Un recyclage des ferrailles dans le but de produire de nouvelles pièces structurelles n'est donc pas possible pour l'instant du fait que ces ferrailles contiennent trop de cuivre et de nickel. Selon l'invention, ce problème est résolu grâce à l'élaboration d'un nouvel alliage secondaire de magnésium qui présente les mêmes caractéristiques de corrosion que les alliages de magnésium purs, malgré des teneurs élevées en cuivre, nickel, fer et silicium.

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