A method and system for on-line monitoring of material behavior in lead-bismuth fast reactor
By using a three-electrode system electrochemical impedance spectroscopy probe and equivalent circuit model in a lead-bismuth fast reactor, online, continuous, non-destructive, and quantitative monitoring of the thickness of multilayer oxide films on the surface of structural materials in the lead-bismuth fast reactor was achieved. This solves the problem of insufficient early warning of corrosion status in existing technologies and improves the accuracy and predictive ability of corrosion status assessment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2026-06-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to achieve online, continuous, non-destructive, and quantitative monitoring of the thickness of multilayer oxide films on the surface of lead-bismuth fast reactor structural materials, resulting in insufficient early warning of corrosion status.
An electrochemical impedance spectroscopy probe with an internally integrated three-electrode system is used to collect electrochemical impedance spectroscopy data by applying sinusoidal potential perturbation. Combined with equivalent circuit model fitting and dielectric constant estimation, the oxide film thickness can be quantitatively estimated, and corrosion status can be predicted based on the electrochemical impedance spectroscopy data.
This technology enables online, continuous, non-destructive, and quantitative monitoring of the thickness of multilayer oxide films on the surface of lead-bismuth fast reactor materials. It can provide timely early warning of material corrosion status and improve the accuracy and predictive ability of corrosion status assessment.
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