OPTICORR Guide Book: Optimisation of in-service performance of boiler steels by modelling high temperature corrosion

David Baxter (Editor), Liisa Heikinheimo (Editor)

Research output: Book/ReportReport

Abstract

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.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages152
ISBN (Electronic)951-38-6740-4
ISBN (Print)951-38-6739-0
Publication statusPublished - 2005
MoE publication typeNot Eligible

Publication series

SeriesVTT Tiedotteita - Meddelanden - Research Notes
Number2309
ISSN1235-0605

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Keywords

  • corrosion modelling software
  • corrosion processes simulation
  • thermodynamic stability calculations
  • combustion process conditions
  • combustion plants

Cite this

Baxter, D., & Heikinheimo, L. (Eds.) (2005). OPTICORR Guide Book: Optimisation of in-service performance of boiler steels by modelling high temperature corrosion. VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 2309 http://www.vtt.fi/inf/pdf/tiedotteet/2005/T2309.pdf