Effect of solution annealing and Al addition on the corrosion behavior of austenitic stainless steel in supercritical carbon dioxide at high temperature
Source abstract
Abstract
The corrosion behavior of three austenitic stainless steels with basial composition of 20Cr25Ni (R1, SR1 and R1Al) was investigated in supercritical CO 2 at 650℃. R1 was cold-rolled, SR1 was solution-annealed and R1Al was R1 with aluminum addition. The results indicate that solution annealing enhanced the corrosion resistance, reducing weight gain by 37.9% and mitigating preferential corrosion. Adding aluminum to R1 further improved its corrosion resistance, decreasing weight gain by 75.5% and eliminating preferential corrosion. The oxide film structure of R1 is SiO 2, Mn 2O 3, Cr 2O 3 from the inside out, while that of R1Al is Al 2O 3, Cr 2O 3 , and spinel oxides.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · High-Temperature Coating Behaviors · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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