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OPTICORR Guide Book, Optimisation of inservice performance of boiler steels by modelling high temperature corrosion

Funded under: FP6-JRC


This Guide Book is intended to assist the prospective user of a novel range of corrosion modelling software that has been designed to assess potential corrosion under high temperature combustion process conditions. The models described have been developed through the course of the European-funded materials research project, OPTICORR, G5RD-CT-2001-00593.
The corrosion models were based on existing ChemSheet and InCorr software systems. These tools addressed two separate parts of the corrosion process, molten salt corrosion on the surface and internal oxidation/corrosion. The ChemSheet modelling development consists of models for salt-induced high temperature corrosion using the thermodynamic data from within the project. The approach has been to model the salt/gas and salt/metal interfaces. Interaction between the salt and the metal seems to be dependant on the interaction between the salt and the gas.
In the case of internal oxidation/corrosion, the objective was to simulate high temperature corrosion processes under near-service conditions, which requires both a thermodynamic model to predict phase stability for given conditions and a mathematical description of the process kinetics, i.e. solid-state diffusion. The simulation has been achieved by integrating the existing thermodynamic program library ChemApp into a numerical finite difference diffusion calculation. In order to illustrate the application of the modelling tools a number of examples are contained in this Guide Book, including: use of stability diagrams, modelling of internal oxidation / corrosion, modelling of hot salt corrosion and results from the gas precipitation model.

Additional information

Authors: BAXTER D (Editor), European Commission, Joint Research Centre, Institute for Energy, Petten (NL);HEIKINHEIMO L (Editor), VTT Industrial Systems (FI)
Bibliographic Reference: EUR 21736 EN (2005), 148 pp. Free of charge
Availability: Available from European Commission, JRC Knowledge Management Unit, Ispra (IT) Tel: +39 033278 9893 Fax: +39 033278 5409 E-mail: or Bruxelles (BE) Tel: +32 2 295 76 24 Fax: +32 2 299 63 22
ISBN: ISBN: 951-38-6739-0
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