Method for annealing zircaloy to improve nodular corrosion resis

Details Method for annealing zircaloy to improve nodular corrosion resis Method for annealing zircaloy to improve nodular corrosion resis

1991-08-23

1993-02-23

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148672, C22F 100

Patent

active

051886766

ABSTRACT:
A method for annealing a Zircaloy member having a cold worked or beta quenched crystal structure to mitigate the reduction in nodular corrosion resistance caused by the anneal comprises, annealing the member in an atmosphere comprising oxygen and the balance an inert atmosphere to form an adherent black oxide on the member.

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patent: 4512819 (1985-04-01), Steinberg
patent: 4521259 (1985-06-01), Eucken
patent: 4636267 (1987-01-01), Jacobsen et al.
patent: 4647317 (1987-03-01), Rosecrans
patent: 4648912 (1987-03-01), Sabol et al.
patent: 4881992 (1989-11-01), Bunel et al.

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