Simultaneous oxidation and carburization of a Fe-9Cr alloy under different oxygen pressures at 800 °C
Source abstract
Abstract
Abstract A model Fe-9Cr alloy was exposed to various H 2 CO 2 CH 4 mixtures providing different oxygen pressures and carbon activities at 800 °C. Three oxidation modes and three oxygen pressure ranges have been observed. At low pressures (Range I) only thin external Cr 2 O 3 scales formed. An intermediate range (Range II) produced an internal precipitation of Cr 2 O 3 and Cr carbide without an external scale. Higher pressures (Range III) produced external FeO x scales plus an internal oxidation of Cr. Two critical oxygen pressures for the transitions between the three oxidation modes were observed and also calculated in reasonable agreement with the experimental results.
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Research context
OpenAlex topics: High-Temperature Coating Behaviors · Metal Alloys Wear and Properties · Nuclear Materials and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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