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University of Nevada, Las Vegas

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Las Vegas (Nev.)

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Progress from June 2001-November 2001 was presented at the winter meeting of the American Nuclear Society in Reno (November 12-15, 2001), and incorporated into a refereed conference proceeding. A copy of the refereed conference proceeding has been provided to Tony Hechanova. In brief, the paper described the new program to examine the corrosive effects of lead-bismuth eutectic (LBE) on steels. We employed various types of surface studies (Scanning Electron Microscope [SEM], and X-ray Photoelectron Spectrometry [XPS]) to examine steel samples that had been exposed to LBE for various lengths of time at various temperatures. The goal is to understand the chemical reaction products and chemical reactions involved in the corrosion. More than 40 samples were examined. Preliminary results of our measurements were presented. We were able to find the atomic composition as a function of position on the sample. We examined both exposed and unexposed samples, and found significant differences.

On the unexposed steel, we found the expected surface dominance of Cr over Fe and Ni, as one expects for a passivated surface. No Pb or Bi is seen. However, we were surprised by the levels of Zn. On the exposed sample, we see the suppression of Cr with respect to Fe as seen in other corroding stainless steel systems. We also see some residual Pb and Bi.


Chromium; Corrosion and anti-corrosives; Eutectic alloys; Lead-bismuth alloys; Lead-bismuth eutectic; Nickel; Particle accelerators — Design and construction; Stainless steel — Corrosion; Steel — Corrosion; Zinc

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Chromium; Corrosion and anti-corrosives; Particle accelerators--Design and construction


Materials Chemistry | Metallurgy | Nuclear | Nuclear Engineering

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59 KB




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