Characterization and simulation studies on the corrosion products of HR230 and 740 H alloys in CO2 with 7% H2O environment at 1000 ℃
Source abstract
Abstract
The corrosion behavior of HR230 and 740 H alloys in CO 2 with 7% H 2O environment at 1000 ℃ were investigated. Some TiO 2 oxides and Al 2O 3 internal oxides were observed on the surface and in the matrix of 740 alloy respectively, which caused the weight gain of 740 H alloy was higher than that of HR230 alloy. The chemical adsorption capacity of H 2O molecules on the surfaces of both alloys was stronger than that of CO 2 molecules. The H 2O molecule preferentially reacted with both alloys to form a Cr 2O 3 oxide layer, while the delayed CO 2 molecule caused the internal oxidation of Al.
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Research context
OpenAlex topics: Catalytic Processes in Materials Science · High-Temperature Coating Behaviors · Catalysts for Methane Reforming
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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