THERMAL BARRIER PLACED DIRECTLY ON MONOCRYSTALLINE SUPERALLOY

摘要

PPROBLEM TO BE SOLVED: To provide a method in which the production flow process of an assembled body is simplified, while reducing the production cost thereof, the service life of a superalloy coated with a thermal barrier is elongated. PSOLUTION: On a monocrystalline superalloy (10) having the following composition containing, by weight: 3.5% to 7.5% Cr, 0 to 1.5% Mo, 1.5% to 5.5% Re, 2.5% to 5.5% Ru, 3.5% to 8.5% W, 5% to 6.5% Al, 0 to 2.5% Ti, 4.5% to 9% Ta, 0.08% to 0.12% Hf, 0.08% to 0.12% Si, the balance to 100% being constituted by Ni and any impurities, a stabilized zirconia (20) is deposited directly, the zirconia being stabilized with at least one oxide of an element selected from the group constituted by rare earths, or with a combination of a tantalum oxide and at least one rare earth oxide, or with a combination of a niobium oxide and at least one rare earth oxide. PCOPYRIGHT: (C)2009,JPO&INPIT