Corrosion potential behavior of noble metal-modified alloys in high temperature water

Book · Fri Sep 01 04:00:00 EDT 1995

OSTI ID:99525

Kim, Y J; Niedrach, L W; Andresen, P L ^[1]

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1. GE Corporate Research and Development Center, Schenectady, NY (United States)

Intergranular stress corrosion cracking (IGSCC) of sensitized stainless steel (SS) components in boiling water reactors (BWRs) is known to be a major concern. There the effect of Pd or Pt additions to various alloys on the corrosion potential behavior was investigated in 288 C water containing various amounts of oxygen, hydrogen, and hydrogen peroxide. The data showed that the noble-metal alloying additions to engineering materials improved the catalytic efficiency for the recombination of oxygen and hydrogen on the surface and thereby lowered the corrosion potential for IGSCC protection when the molar ratio of hydrogen to oxygen in water is greater than about 2.

• OSTI ID: 99525
• Report Number(s): CONF-950304--
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
BWR TYPE REACTORS
CORROSION
CORROSION PROTECTION
CRACK PROPAGATION
EXPERIMENTAL DATA
INCONEL 600
INTERGRANULAR CORROSION
LOW ALLOY STEELS
METALLURGICAL EFFECTS
PALLADIUM
PLATINUM
REACTOR MATERIALS
STAINLESS STEEL-304
STELLITE
STRESS CORROSION
WATER CHEMISTRY