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U.S. Department of Energy
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GAS-METAL REACTIONS WITH IRON- AND NICKEL-BASE HEAT RESISTANT ALLOYS. An Interpretive Literature Survey

Technical Report ·
OSTI ID:4717335
The addition of small amounts of Cr to Ni accelerted oxidation by increasing the density of defects and enhancing diffusion in the oxide scale. However, small amount of Cr in Fe resulted in formation of dense, defect-free spinel phases in the oxide-scale. Small additions of Al and Cr increased internal oxidation of Fe- and Ni-base alloys. Sufficient quantities of Cr and Al retarded oxidation of Feand Ni-base alloys by oxidizing preferentially and forming an adherent, protective, oxide film. The Fe-Cr-Al alloys appear to have sufficient corrosion resistance in most atmospheres at temperatures to 1000 un. Concent 85% C (1850 un. Concent 85% F). The Nibase superalloys retain a reasonable portion of their room-temperature mechanical strength and resist the effects of oxidizing atmospheres at temperatures of 900 to 1200 un. Concent 85% C. (P.C.H.)
Research Organization:
General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
DOE Contract Number:
AT(45-1)-1350
NSA Number:
NSA-17-020412
OSTI ID:
4717335
Report Number(s):
HW-76952
Country of Publication:
United States
Language:
English