C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C1/00—Making non-ferrous alloys
C22C1/04—Making non-ferrous alloys by powder metallurgy
C22C1/05—Mixtures of metal powder with non-metallic powder
C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
Mise en oeuvre d'un cuivre electrolytique exempt d'oxygene, desoxyde par du bore ou du lithium, pour des profiles creux et procede de fabrication