Platinum alloy and method of production thereof

Details Platinum alloy and method of production thereof Platinum alloy and method of production thereof

C - Chemistry, Metallurgy

22

C

C22C 5/04 (2006.01)

Patent

CA 2555255

The disclosure relates to a platinum alloy comprising (a) 55 to 63 wt.% of platinum, (b) 2 to 10 wt.% of cobalt, and (c) 27 to 43 wt.% of copper. The disclosure further relates to a platinum alloy comprising (a) 70 to 79.5 wt.% of platinum, 2 to 10 wt.% of cobalt, and (c) 10.5 to 28 wt.% of copper. The platinum alloys have excellent mechanical and optical properties for use in the production of ornamental articles such as rings, necklaces, earrings, watch bands, watch bodies and other jewelry. The disclosure further relates to a method of preparing the platinum alloys and their use in the production of ornamental articles. Still further the disclosure relates to ornamental articles comprising the platinum alloy and a method of production thereof.

L'invention porte sur un alliage de platine comprenant: (a) 55 à 63 % en poids de platine, (b) 2 à 10 % en poids de cobalt, et (c) 27 à 43 % en poids de cuivre. L'invention porte également sur un alliage de platine comprenant: (a) 70 à 79,5 % en poids de platine, 2 à 10 % en poids de cobalt, et (c) 10,5 à 28 % en poids de cuivre. Lesdits alliages ont d'excellentes propriétés mécaniques et optiques adaptées à la production d'articles ornementaux tels que des bagues, des colliers, des boucles d'oreille, des bracelets de montre, des boîtiers de montre ou autres. L'invention porte de plus sur un procédé de préparation desdits alliages et sur leur utilisation pour la production d'articles ornementaux. L'invention porte en outre sur des articles ornementaux faits de ces alliages, et sur leur procédé de production.

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