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Improved Application of Local Models to Steel Corrosion in Lead-Bismuth Loops

Journal Article · · Nuclear Technology
 [1];  [1]
  1. Los Alamos National Laboratory Center for Nonlinear Studies, MS-B258, P.O. Box 1663, Los Alamos, New Mexico 87545
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The corrosion of steels exposed to flowing liquid metals is influenced by local and global conditions of flow systems. The present study improves the previous local models when applied to closed loops by incorporating some global condition effects. In particular the bulk corrosion product concentration is calculated based on balancing the dissolution and precipitation in the entire closed loop. Mass transfer expressions developed in aqueous medium and an analytical expression are tested in the liquid-metal environments. The improved model is applied to a pure lead loop and produces results closer to the experimental data than the previous local models do. The model is also applied to a lead-bismuth eutectic (LBE) test loop. Systematic studies illustrate the effects of the flow rate, the oxygen concentration in LBE, and the temperature profile on the corrosion rate.
Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
819630
Report Number(s):
LA-UR-03-5576
Journal Information:
Nuclear Technology, Journal Name: Nuclear Technology Journal Issue: 3 Vol. 144; ISSN 0029-5450
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English

References (13)

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Related Subjects

36 MATERIALS SCIENCE