NICKEL-BASE ALLOY AND ARTICLE MANUFACTURES FROM IT Russian patent published in 2003 - IPC

FIELD: nonferrous metallurgy. SUBSTANCE: nickel-base alloy applicable at high temperatures and containing solid matrix consisting of chromium solid solution in nickel and precipitate in the form of grains in said matrix coherent with it and consisting of intermetallic compound including gallium and additionally containing at least one metal selected from group including aluminum and optionally: (a) at least one other precipitate in the form of grains in said matrix incoherent with said matrix. In this case, the other precipitate is selected from group consisting of carbides, carbonitrides, nitrides and borides; (b) at least one hardening element selected from group including tungsten molybdenum, tantalum, and rhenium; (c) cobalt; (d) zirconium and residue in the form of nickel and chromium and inevitable impurities. EFFECT: higher resistance to corrosion due to presence of gallium oxide Ga₂O₃.. 18 cl