High temperature oxidation and corrosion of boiler materials

Satu Tuurna, Sanni Yli-Olli, Stefan Holmström, Liisa Heikinheimo

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


    The study aims to the development of methods and models for the assessment of material performance in boilers and use of mixed fuels with combustion gas species like H2O, HCl or SO2. Gas phase oxidation tests at elevated temperatures under different atmospheres were carried out for selected steels. Formed oxide scales were characterised using EDS/SEM, and mass changes were measured for the exposed samples. Thermodynamic stability calculations simulating oxidation correspond quite well to the oxide structures formed in laboratory exposures for specified steel compositions. The results from laboratory exposures were also used to model the oxidation kinetics. The results show that oxidation kinetics and mechanism are strongly dependent on temperature and gas species like H2O, HCl and SO2. A further goal is to combine thermodynamic calculations and kinetic measurements for oxidation simulation to get an efficient tool for prediction of corrosion for specific steel types and combustion conditions.
    Original languageEnglish
    Title of host publicationBALTICA VII - Life Management and Maintenance for Power Plants. Vol. 1
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    ISBN (Electronic)978-951-38-6316-6
    ISBN (Print)978-951-38-6315-9
    Publication statusPublished - 2007
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventBALTICA VII - International Conference on Life Management and Main-tenance for Power Plants - Helsinki-Stockholm, Finland
    Duration: 12 Jun 200714 Jun 2007

    Publication series

    SeriesVTT Symposium


    ConferenceBALTICA VII - International Conference on Life Management and Main-tenance for Power Plants


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