Abstract
The ultimate goal of this work is to develop a deterministic model for corrosion and activity incorporation in oxides on construction materials in nuclear power plant coolant circuits. The proposed model is based on fundamental physico-chemical mechanisms.
As a result of the calculation procedure developed on the basis of the model, the kinetic and transport parameters of the growth and restructuring of the oxides on austenitic stainless steels and nickel based alloys in Light Water Reactors (LWRs) were determined from fittings of the Mixed-Conduction Model for oxide films to in-situ impedance data as well as ex-situ analytical results on the thickness and composition of such layers.
Subsequently, the determination of the kinetic and transport parameters for the incorporation of Zn in the bulk of the inner layer oxides on stainless steels was performed on the fitting of experimental depth profiles of this element to the diffusion-migration equations for the non-steady state transport of minor species.
The calculational results are discussed in terms of the influence of incorporation of solution-originating species on the kinetics of film growth and layer restructuring
As a result of the calculation procedure developed on the basis of the model, the kinetic and transport parameters of the growth and restructuring of the oxides on austenitic stainless steels and nickel based alloys in Light Water Reactors (LWRs) were determined from fittings of the Mixed-Conduction Model for oxide films to in-situ impedance data as well as ex-situ analytical results on the thickness and composition of such layers.
Subsequently, the determination of the kinetic and transport parameters for the incorporation of Zn in the bulk of the inner layer oxides on stainless steels was performed on the fitting of experimental depth profiles of this element to the diffusion-migration equations for the non-steady state transport of minor species.
The calculational results are discussed in terms of the influence of incorporation of solution-originating species on the kinetics of film growth and layer restructuring
| Original language | English |
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| Title of host publication | Materials Science and Technology Conference and Exhibition, MS and T'07 - "Exploring Structure, Processing, and Applications Across Multiple Materials Systems". Detroit, Michigan, USA, 16 - 20 Sept. 2008 |
| Pages | 952-964 |
| Volume | 2 |
| Publication status | Published - 2007 |
| MoE publication type | A4 Article in a conference publication |
| Event | Materials Science & Technology Conference and Exhibition, MS and T 07. Exploring Structure, Processing, and Applications Across Multiple Materials Systems - Detroit, Michigan, United States Duration: 16 Sept 2007 → 20 Sept 2007 |
Conference
| Conference | Materials Science & Technology Conference and Exhibition, MS and T 07. Exploring Structure, Processing, and Applications Across Multiple Materials Systems |
|---|---|
| Abbreviated title | MS and T '07 |
| Country/Territory | United States |
| City | Detroit, Michigan |
| Period | 16/09/07 → 20/09/07 |
Keywords
- stainless steel
- nickel-based alloys
- high-temperature water
- oxide growth
- kinetic model