A study of the behavior of bromide in artificial pits using in situ X-ray microprobe analysis

Technical Report · Wed Dec 31 04:00:00 EST 1997

DOI:https://doi.org/10.2172/658117· OSTI ID:658117

Isaacs, H S ^[1]; Kaneko, M ^[2]

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1. Brookhaven National Lab., Upton, NY (United States). Dept. of Applied Science
2. Nippon Steel Corp., Tokyo (Japan)

An in situ X-ray microprobe analysis of Type 316 stainless steel artificial pits has been carried out with a bromide/chloride solution. A high intensity 8 micron diameter polychromatic X-ray beam was scanned across the steel solution interface within the artificial pit. The resulting X-ray fluorescence was analyzed using an energy dispersive X-ray detector. In contrast to the light Cl atom, Br could be detected, making it possible to monitor the behavior of halides in the artificial pits and in the salt layer at the interface. It was found that Br was more active than Cl. At high potentials, elemental Br was produced as an oxidation product, whereas without added bromide, chloride only formed a salt layer. Br also concentrated at the salt steel interface at potentials below where it was oxidized.

• Research Organization: Brookhaven National Lab., Applied Science Dept., Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 658117
• Report Number(s): BNL--64524; CONF-970517--; ON: DE97008953; BR: KC020102; CNN: Grant NASA NAG9; Grant NSF EAR86-18346
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CORROSIVE EFFECTS
EXPERIMENTAL DATA
LITHIUM BROMIDES
LITHIUM CHLORIDES
OXIDATION
PITTING CORROSION
STAINLESS STEEL-316
X-RAY FLUORESCENCE ANALYSIS