The initiation of breakaway oxidation of Fe-9Cr-1Mo in a high pressure CO2 atmosphere

Newcomb, S. B.; Stobbs, W. M.

doi:10.1007/bf00659346

Cited by 16 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it is seemed that the reaction is very slow since the temperature used in this study is not so high. It might be that the process is complicated by the fact that the CO 2 can be present by direct ingress, through a presumably the oxide scale [6] .…”

Section: Co = C + Co (1)mentioning

confidence: 99%

“…In the past, a large number of corrosion tests in high temperature carbon dioxide gas (CO 2 [g]) have been performed for the development of gas cooled reactors, and the corrosion behavior of typical materials such as austenitic and ferritic steels has been observed [1][2][3][4][5][6] . According to previous studies, the most important issue for materials in high temperature CO 2 [g] is breakaway corrosion caused by the reiteration of exfoliation and the nucleation of oxides.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion Behavior of FBR Structural Materials in High Temperature Supercritical Carbon Dioxide

Furukawa

Inagaki

Aritomi

2010

JPES

View full text Add to dashboard Cite

A key problem in the application of a supercritical carbon dioxide (CO 2) turbine cycle to a fast breeder reactor (FBR) is the corrosion of structural material by supercritical CO 2 at high temperature. In this study, corrosion test of high-chromium martensitic steel (12Cr-steel) and FBR grade type 316 stainless steel (316FR), which are candidate materials for FBRs, were performed at 400-600ºC in supercritical CO 2 pressurized at 20MPa. Corrosion due to the high temperature oxidation in exposed surface was measured up to approximately 2000h in both steels. In the case of 12Cr-steel, the weight gain showed parabolic growth with exposure time at each temperature. The oxidation coefficient could be estimated by the Arrhenius function. The specimens were covered by two successive oxide layers, an Fe-Cr-O layer (inside) and an Fe-O layer (outside). A partial thin oxide diffusion layer appeared between the base metal and the Fe-Cr-O layer. The corrosion behavior was equivalent to that in supercritical CO 2 at 10MPa, and no effects of CO 2 pressure on oxidation were observed in this study. In the case of 316FR specimens, the weight gain was significantly lower than that of 12Cr-steel. Dependency of neither temperature nor exposed time on oxidation was not observed, and the value of all tested specimens was within 2g/m 2. Nodule shape oxides which consisted of two structures, Fe-Cr-O and Fe-O were observed on the surface of the 316FR specimen. Carburizing, known as a factor in the occurrence of breakaway corrosion and/or the degradation of ductility, was observed on the surface of both steels.

show abstract

Section: Co = C + Co (1)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of FBR Structural Materials in High Temperature Supercritical Carbon Dioxide

Furukawa

Inagaki

Aritomi

2010

JPES

View full text Add to dashboard Cite

show abstract

“…These pores are also providing an increased surface area within the oxide scale. This increased surface area may provide additional area for catalysis of the Boudouard reaction to take place, leading to increased carbon presence within the scale [25] with continued exposure due to the ever increasing surface area within the oxide scale. Should an interconnected network of pores span the total distance through the oxide scale this will lead to a dramatic increase in the inwards gas diffusion resulting in rapid oxide growth and potentially breakaway oxidation.…”

Section: Introductionmentioning

confidence: 99%

Using a plasma FIB system to characterise the porosity through the oxide scale formed on 9Cr-1Mo steel exposed to CO2

et al. 2022

View full text Add to dashboard Cite

Focused ion beam microscopy and scanning electron microscopy have been used to characterise the porosity of the oxide scale of an experimental 9Cr–1Mo steel sample exposed for 4580 h in a CO2-rich environment. The magnetite shows a high frequency of spherical pores (~ 1 µm3) with no interconnectivity. The Cr-rich spinel layer shows greater interconnectivity, but no single pore spans the total oxide scale. A mechanism for the formation of the different morphologies observed across the scale is proposed, linking porosity changes across the oxide scale to the carburisation and elemental segregation of Cr within the substrate. Graphical abstract

show abstract

“…In the past, a large number of corrosion tests in high temperature carbon dioxide gas (CO 2 [g]) have been performed for the development of gas cooled reactors, and it was obtained that the most important issue for materials in high temperature CO 2 [g] is high temperature oxidation including breakaway corrosion caused by the repeated spalling and reformation of the oxide scale (Pritchard (1974), Taylor (1974), Nakanishi (1974Nakanishi ( , 1975, Jones (1985), Newcob (1986)).…”

Section: Introductionmentioning

confidence: 99%

Icone19-43141 High Temperature Oxidation of FBR Structural Materials in Carbon Dioxide and in Air

Furukawa

Kato

Inagaki

et al. 2011

ICONE

View full text Add to dashboard Cite

A key problem in the application of a supercritical carbon dioxide (CO 2 ) turbine cycle to a fast breeder reactor is the corrosion of structural materials brought about by supercritical CO 2 at high temperatures. In this study, high-temperature oxidation tests on the structural materials were performed in carbon dioxide pressurized at 0.2 and 1 MPa, and in air, and the oxidation behavior were compared.Results of investigating the effect of CO 2 pressure including the previous reports tested at 10MPa and at 20MPa, the effect was hardly observed for all steels. In air environment, weight gain caused by high temperature oxidation was much lower than that in CO 2 .

show abstract

The initiation of breakaway oxidation of Fe-9Cr-1Mo in a high pressure CO2 atmosphere

Cited by 16 publications

References 10 publications

Corrosion Behavior of FBR Structural Materials in High Temperature Supercritical Carbon Dioxide

Corrosion Behavior of FBR Structural Materials in High Temperature Supercritical Carbon Dioxide

Using a plasma FIB system to characterise the porosity through the oxide scale formed on 9Cr-1Mo steel exposed to CO2

Icone19-43141 High Temperature Oxidation of FBR Structural Materials in Carbon Dioxide and in Air

Contact Info

Product

Resources

About