Castable hot corrosion resistant alloy

Details Castable hot corrosion resistant alloy Castable hot corrosion resistant alloy

1987-10-14

1988-10-25

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 62, 420 79, 420 80, 420 81, C22C 3850

Patent

active

047802766

ABSTRACT:
About ten weight percent nickel is added to a Fe-base alloy which has a ferrite microstructure to improve the high temperature castability and crack resistance while about 0.2 weight percent zirconium is added for improved high temperature cyclic oxidation and corrosion resistance. The basic material is a high temperature FeCrAl heater alloy, and the addition provides a material suitable for burner rig nozzles.

REFERENCES:
patent: 2063513 (1935-07-01), Lohr
patent: 2570193 (1951-10-01), Bieber et al.
patent: 3203791 (1965-08-01), Franklin et al.
patent: 3817747 (1974-06-01), Schultz et al.
patent: 4054469 (1977-10-01), Jackson
patent: 4086085 (1978-04-01), McGurty
patent: 4110110 (1978-08-01), Kondo et al.
patent: 4340425 (1982-07-01), Barrett et al.
patent: 4535034 (1985-08-01), Zaizen et al.

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