Microscopical investigation of steamside oxide on X20CrMoV121 superheater tubes

Melanie Montgomery, Anette Nørgaard Hansson, Søren A. Jensen, Tommy Vilhelmsen

Research output: Contribution to journalJournal articleResearchpeer-review


X20CrMoV121 is a 12%Cr martensitic steel which has been used in power plants in Europe for many decades. Superheater tubes exposed for various durations up to 135,000 hours in power plants in Denmark at steam temperatures varying from 450 to 575°C were investigated. Light optical and scanning electron microscopy was used to investigate steamside oxide morphologies. At all temperatures there is a double layered oxide, however, the inner:outer oxide thickness is not always equal. At the lower steam temperature range of
Original languageEnglish
JournalMaterials at High Temperatures
Issue number4
Pages (from-to)355-360
Publication statusPublished - 2011


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