METHOD OF COLOR RECOVERY OF THE OXIDIZED ARTICLE MADE OF COPPER-CONTAINING GOLD ALLOYS Russian patent published in 1997 - IPC

Abstract RU 2082816 C1

FIELD: metallurgy. SUBSTANCE: by the first variant method involves copper oxide removing from the article surface and the following thermodiffusive treatment in neutral for copper medium at temperature above ordering point by type AB up to normative color index attainment. By the second variant method involves thermodiffusive treatment at the same temperatures but under reductive medium with respect to copper. EFFECT: improved method of treatment. 2 cl

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RU 2 082 816 C1

Authors

Voroshilov V.A.

Bel'Tjukov A.G.

Nikitenko A.V.

Brjukhanov S.B.

Dates

1997-06-27Published

1994-12-14Filed