B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 35/30 (2006.01) B23K 35/02 (2006.01) F23R 3/00 (2006.01)
Patent
CA 2368329
A braze material and method for repairing an article (10), such as a gas turbine engine combustor liner (10) formed from a nickel-base or cobalt-base superalloy. The braze material is composed of a nickel-base braze alloy (16) that is preferably in powder form and may be dispersed in a suitable vehicle to yield a slurry, putty or solid tape. The braze alloy (16) is formulated to be capable of withstanding the high temperature operating environment of a combustor liner (10), and to have a melting temperature below the grain growth or incipient melting temperature of the superalloy to be repaired. A preferred braze alloy (16) is formed by combining at least two nickel--base powders. A suitable composition for the braze alloy (16) is, in weight percent, about 10 to about 19 chromium, about 3 to about 10.5 cobalt, about 1.75 to about 4.9 titanium, about 0.75 to about 3.4 aluminum, about 1.25 to about 4.1 tungsten, about 1.25 to about 4.1 molybdenum, about 0.025 to about 0.225 carbon, about 0.005 to about 0.15 zirconium, about 0.50 to about 2.6 boron, up to 1.5 iron, with the balance being nickel and incidental impurities.
Budinger David Edwin
Caldwell James Michael
Cohen Joel Heywood
Emilianowicz Edward John
Gordon Michael Glenn
Company General Electric
Craig Wilson And Company
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