Silicon effects on the wet oxidation of type 310 stainless steel

Improvement of high-temperature initial oxidation behavior of HR3C austenitic heat-resistant steel using silicon modification: experimental and first-principle study

“…Therefore, the M 23 C 6 of 22Cr-25Ni-2.5Si alloys may be helpful for the formation of SiO 2 oxides. Moreover, some people have found that the formed SiO 2 layer hinders Fe diffusion as well, resulted from the larger atomic size of Fe than Cr and more difficult transport of Fe through a SiO 2 layer than Cr [35,36]. SiO 2 was also formed on the sub-surface of 22Cr-25Ni-2.5Si alloys, so it restrained the diffusion of Fe and caused a lower Fe content in the 22Cr-25Ni-2.5Si alloys, as compared to the HR3C steels.…”

Influence of Major Operating Parameters (Temperature, Pressure, and Flow Rate) on the Corrosion of Candidate Alloys for the Construction of Hydrothermal Liquefaction Biorefining Reactors

“…In subcritical water, the influence of temperature on corrosion has been intensively studied at temperature ≤315 °C. − Unfortunately, some reported results are controversial, and very limited works investigate the alloy performance at temperature >320 °C. − For example, previous study found that the corrosion rate of SS304 steel linearly increased with temperature in subcritical water, while other investigation indicated that in the temperature range of 300–350 °C, the corrosion rate of the steel continuously decreased with an increase in temperature . As a matter of fact, the related corrosion mechanisms at temperature >300 °C are still unclear. − Moreover, for high Cr-bearing austenitic stainless steels (such as SS310 and SS347), considerable efforts have been employed to identify their corrosion performance at temperature <320 °C for the application at LWR plants and at temperature >500 °C for the development of the supercritical water nuclear reactor. − Several studies showed that the corrosion kinetics of the two steels likely followed parabolic law within the testing temperature ranges. , Furthermore, ferritic-martensitic (F/M) steels with a Cr content of 9–12 wt %, which exhibit suitable creep, oxidation resistance, and low susceptibility to stress corrosion cracking (SCC) in high-temperature environments, may be applicable for the construction of HTL reactors because of their much lower cost compared to austenitic stainless steels and Ni-based alloys. , However, little information is available to describe their performance in subcritical water under representative HTL operating conditions.…”

“…46−54 Several studies showed that the corrosion kinetics of the two steels likely followed parabolic law within the testing temperature ranges. 46,49 Furthermore, ferritic-martensitic (F/M) steels with a Cr content of 9−12 wt %, which exhibit suitable creep, oxidation resistance, and low susceptibility to stress corrosion cracking (SCC) in high-temperature environments, may be applicable for the construction of HTL reactors because of their much lower cost compared to austenitic stainless steels and Nibased alloys. 55,56 However, little information is available to describe their performance in subcritical water under representative HTL operating conditions.…”