Passive Corrosion Behavior of Alloy 22

Rebak, R.B. ; Payer, J.H.

United States. Department of Energy. Yucca Mountain Project Office.

关键词: Corrosion;    Ground Water;    36 Materials Science;    Materials Testing;    12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;   

DOI  :  10.2172/893919
RP-ID  :  UCRL-CONF-218309
RP-ID  :  NA
RP-ID  :  893919

美国|英语

来源: UNT Digital Library

【 摘 要 】

Alloy 22 (NO6022) was designed to stand the most aggressive industrial applications, including both reducing and oxidizing acids. Even in the most aggressive environments, if the temperature is lower than 150 F (66 C) Alloy 22 would remain in the passive state having particularly low corrosion rates. In multi-ionic solutions that may simulate the behavior of concentrated ground water, even at near boiling temperatures, the corrosion rate of Alloy 22 is only a few nano-meters per year because the alloy is in the complete passive state. The corrosion rate of passive Alloy 22 decreases as the time increases. Immersion corrosion testing also show that the newer generation of Ni-Cr-Mo alloys may offer a better corrosion resistance than Alloy 22 only in some highly aggressive conditions such as in hot acids.