A microstructural study of the oxide scale formation on ODS Fe-13Cr steel

D. T. Hoelzer, B. A. Pint, I. G. Wright

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Abstract

The high-temperature oxidation behavior of a Y2O3-dispersed Fe-13Cr steel was investigated in air at temperatures of 700°C, 800°C, and 900°C for 10000 h. The kinetic data showed that oxide scale formation obeyed a parabolic rate law at each temperature and that the oxidation rate was lower than in other studies based on shorter test times. Microstructural analysis of the oxide scales formed at 700°C and 800°C was conducted using cross-sectional specimens and analytical electron microscopy (AEM). This analysis showed that the main scale was a continuous Cr-oxide and that an underlying amorphous silica layer formed at both temperatures, despite the low Si content (0.05 wt%) in the alloy.

Original languageEnglish
Pages (from-to)1306-1310
Number of pages5
JournalJournal of Nuclear Materials
Volume283-287
Issue numberPART II
DOIs
StatePublished - 2000

Funding

This research was supported by the US Department of Energy, Fossil Energy AR&TD Materials Program under contract DE-AC05-96OR22464 with Lockheed Martin Energy Research Corporation and the Oak Ridge National Laboratory (ORNL) Postdoctoral Research Associates Program administered jointly by ORNL and the Oak Ridge Institute for Science and Education.

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