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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Authors
Dates
1997-06-27—Published
1994-12-14—Filed