Document Type

Grant

Publication Date

5-31-2002

Publisher

University of Nevada, Las Vegas

Publisher Location

Las Vegas (Nev.)

First page number:

1

Last page number:

16

Abstract

The proposed work will combine chemical kinetics and hydrodynamics in target and test-loop lead-bismuth eutectic (LBE) systems to model system corrosion effects. This approach will result in a predicative tool that can be validated with corrosion test data, used to systematically design tests and interpret the results, and provide guidance for optimization in LBE system designs. The task includes two subtasks. The first subtask is to try to develop the necessary predictive tools to be able to predict the levels of oxygen and corrosion products close to the boundary layer through the use of Computational Fluid Dynamics (CFD) modeling. The second subtask is to predict the kinetics in the corrosion process between the LBE and structural materials by incorporating pertinent information from the first subtask. In many cases a component fails because of the combined effect of mechanical or hydraulic factors and corrosion. Such cases are of three types: stress corrosion, corrosion fatigue, and liquid-velocity effects (corrosion erosion and cavitations). The compatibility issues arising from the interaction of liquid metals, corrosion/dissolution, with structural materials at temperatures of interest are important while lead alloy as a coolant for a fast breeder type nuclear reactor is used. In the second year of the second subtask will focus on the kinetics of the dissolution/deposition process as a function of temperatures, flow velocities, dissolved metal concentrations and the oxygen potentials of the 2 system, the kinetics of film formations in the presence of oxygen, and the kinetics of transports of metal through the oxidized surface film. Both mass transfer controlled and the diffusion coefficient of dissolved species will be parametrically studied for the corrosion process.

Keywords

Chemical kinetics; Cavitation erosion; Computational fluid dynamics; Corrosion and anti-corrosives; Eutectic alloys; Hydrodynamics; Lead-bismuth alloys; Lead-bismuth eutectic; Oxidation; Oxygen; Steel — Corrosion

Controlled Subject

Chemical kinetics; Computational fluid dynamics; Steel--Corrosion

Disciplines

Materials Chemistry | Materials Science and Engineering | Metallurgy | Nuclear Engineering | Oil, Gas, and Energy

File Format

pdf

File Size

162 KB

Language

English

Comments

Pages 13-15 are missing from document

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

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