Nickel-based monocrystalline superalloy with improved oxidation

Details Nickel-based monocrystalline superalloy with improved oxidation Nickel-based monocrystalline superalloy with improved oxidation

1993-08-06

1995-07-25

Wyszomierski, George

Metal treatment

Stock

Nickel base

420443, 420448, C22C 1905

Patent

active

054358612

ABSTRACT:
A nickel-based monocrystalline superalloy suitable for turbine engine blades is obtained by adding to the alloy at least one element chosen from erbium and silicon, at a concentration by weight of 50 to 500 ppm for Er and of 500 to 1000 ppm for Si and, optionally, hafnium at a concentration by weight of 500 to 1000 ppm.

REFERENCES:
patent: 4162918 (1979-07-01), Huseby
patent: 4240828 (1980-12-01), Huseby
patent: 4721540 (1988-01-01), Harris et al.
patent: 5077141 (1991-12-01), Naik et al.

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