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Conference Papers Year : 2018

## Corrosion in liquid metals from database acquisition to life time prediction

(1) , (1) , (2) , (1) , (1)
1
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L. Martinelli
• Function : Correspondent author
M. Roy
D.J. Young
• Function : Author

#### Abstract

In nuclear power plant, materials can be corroded by liquid metals that are either flowing as coolant in first and secondary circuit (lead alloys Pb-Bi) or stagnant as fission product in cladding (tellurium). Steel corrosion process depends (i) on the concentration of dissolved corrosive element as O or C that can lead to oxidation or carburization, similarly to corrosion processes in gas phase; (ii) on the potential existence of intermetallic containing elements originating from both liquid metal and steel (FeTe$_2$, Cr$_3$Te$_4$); (iii) on capability of steel dissolution in the liquid metal. For all these corrosion processes, thermodynamic databases have to be developed in order to model the corrosion mechanisms. The obtained corrosion model is supposed to be used for life time prediction. This paper deals with both thermodynamic data acquisition (Ni solubility limit in liquid lead bismuth alloy) with thermodynamic database development (Calphad method) and corrosion experiments with mechanism modelling. Liquid metal environment considered are liquid Te and Pb-Bi alloy. Corroded steels are austenitic steels

### Dates and versions

cea-02400183 , version 1 (09-12-2019)

### Identifiers

• HAL Id : cea-02400183 , version 1

### Cite

L. Martinelli, M. Roy, D.J. Young, S. Gosse, S. Bosonnet. Corrosion in liquid metals from database acquisition to life time prediction. International Symposium on High-Temperature Oxidation and Corrosion (ISHOC - 2018), Oct 2018, Matsue, Japan. ⟨cea-02400183⟩

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