Effect of pressure on the corrosion and carburization behavior of chromia-forming heat-resistant alloys in high-temperature carbon dioxide environments

Lee, Ho Jung; Subramanian, Gokul Obulan; Kim, Sung Hwan; Jang, Changheui

doi:10.1016/j.corsci.2016.06.004

Cited by 61 publications

(27 citation statements)

References 34 publications

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“…Compared with the published data [4,19], the oxide scale thickness of Inconel 617 was the thinnest, as shown in figure 4. Our data provided a guiding significance for the materials selection and the prediction for corrosion life, although some discrepancies were inevitable during the whole experiment and analysis.…”

Section: Resultsmentioning

confidence: 49%

“…David et al studied that the corrosion behavior of Fe-Cr-X alloys in the various corrosive environments containing CO 2 and obtained the corrosion kinetics and mechanism [6,16,17]. Lee researched the corrosion behaviors of several high Cr alloys in high-temperature supercritical carbon dioxide at different pressures [4,18,19]. Inconel 617 has an excellent strength property and poses a great corrosion resistance in high-temperature supercritical fluids.…”

Section: Introductionmentioning

confidence: 99%

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High-temperature corrosion resistance of nickel-base alloy 617 in supercritical carbon dioxide environment

Liang

Gui

Zhao

2020

Mater. Res. Express

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Corrosion behavior of Inconel 617 in supercritical carbon dioxide at 650°C and 15 MPa for 1000 h was investigated. X-ray diffraction, high-resolution transmission microscopy, and Raman spectrum were used to observe and analyze the corrosion products formed on Inconel 617. The results showed that the corrosion products formed on Inconel 617 were composed of a thick Cr 2 O 3 layer, a thin Al 2 O 3 layer and a carbon-penetrated zone from the interface between carbon dioxide and the oxide scale to the substrate. Carbon was deposited on the surface of the oxide scales, which was verified by Raman results. The oxidation of Inconel 617 suffered in supercritical carbon dioxide was more serious than the carburization of Inconel 617.

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Section: Resultsmentioning

confidence: 49%

Section: Introductionmentioning

confidence: 99%

High-temperature corrosion resistance of nickel-base alloy 617 in supercritical carbon dioxide environment

Liang

Gui

Zhao

2020

Mater. Res. Express

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“…In addition, it has also been reported that aluminaforming alloys displayed thinner corrosion products at higher temperatures (650-750 °C) The mainly protective corrosion product of nickel-base alloy in high temperature CO 2 is a chromia layer or alumina layer. For chromia-forming nickel-base alloys, such as alloy 690 or alloy 600, they rely on the chromia layer to prevent oxygen from further attacking the alloy in high temperature CO 2 [65]. Moreover, due to the rapid diffusion of Mn in the chromia layer, some Mn-Cr spinel oxides were formed on the surface of the chromia layer in nickel-base alloys (Figure 4d).…”

Section: Nickel-base Alloymentioning

confidence: 99%

“…Such a carburization, which weakens the bonding between the oxide and matrix, will increase the probability of the exfoliation of the oxide layer. Surprisingly, no carbides are formed inside nickel-base alloys, indicating that nickel-base alloys have excellent carburization resistance [29,65]. Thus, alumina-forming nickel-base alloys may be a candidate material for the S-CO 2 Brayton cycle system.…”

Section: Nickel-base Alloymentioning

confidence: 99%

Corrosion Behaviors of Heat-Resisting Alloys in High Temperature Carbon Dioxide

Yang¹,

Qian²,

Kuang³

2022

Materials

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The supercritical carbon dioxide Brayton cycle is a promising power conversion option for green energies, such as solar power and nuclear reactors. The material challenge is a tremendous obstacle for the reliable operation of such a cycle system. A large body of research indicates that high-temperature corrosion of heat-resisting alloys by CO2 results in severe oxidation and, in many cases, concurrent internal carburization. This paper mainly reviews the oxidation behavior, carburization behavior and stress corrosion behavior of heat-resisting alloys in high temperature CO2. Specifically, the main factors affecting the oxidation behavior of heat-resistant alloys, such as environmental parameters, surface condition and gaseous impurity, are discussed. Then, carburization is explored, especially the driving force of carburization and the consequences of carburization. Subsequently, the effects of the environmental parameters, alloy type and different oxide layers on the carburizing behavior are comprehensively reviewed. Finally, the effects of corrosion on the mechanical behavior and stress corrosion cracking behavior of heat-resisting alloys are also summarized. The corrosion performances of heat-resisting alloys in high temperature CO2 are systematically analyzed, and new scopes are proposed for future material research. The information provided in this work is valuable for the development of structural material for the supercritical carbon dioxide Brayton cycle.

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“…Therefore, the compatibility of structural materials in S-CO 2 environments at various temperatures and pressures, especially regarding corrosion behavior, was investigated. Generally, it was reported that Ni-base alloys exhibited superior corrosion resistance due to the formation of a thin and adherent Cr-rich oxide layer [7][8][9][10]. The corrosion behaviors of Fe-base alloys were found to be dependent on Cr content, grain size, and exposure temperature [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Tensile Properties of Diffusion Bonded Austenitic Fe-Base Alloys—Before and After Exposure to High Temperature Supercritical-CO2

Kim

Cha

Jang

et al. 2020

Metals

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Austenitic Fe-base alloys, SS 316H and Alloy 800HT, were diffusion bonded for use in compact-type heat exchangers in supercritical-carbon dioxide (S-CO2) Brayton cycles. For diffusion bonded 316H, grain boundary migration across the bond-line was observed despite the formation of some Cr-rich carbide, and its tensile properties were similar to those of as-received 316H. However, diffusion bonded Alloy 800HT exhibited severely degraded elongation compared to as-received 800HT due to the formation of continuous Ti-rich carbides along the bond-line. Post-bond heat treatment (PBHT) was found to improve elongation at fracture for diffusion bonded alloys. However, a subsequent corrosion test in S-CO2 at 600 °C (20 MPa) for 1000 h resulted in a loss of elongation. This was much more severe for PBHT-ed 800HT due to the formation of Cr-rich carbides at the bond-line. Meanwhile, it was found that the effect of ageing on loss of elongation during high temperature exposure was greater than that of S-CO2 environment.

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Effect of pressure on the corrosion and carburization behavior of chromia-forming heat-resistant alloys in high-temperature carbon dioxide environments

Cited by 61 publications

References 34 publications

High-temperature corrosion resistance of nickel-base alloy 617 in supercritical carbon dioxide environment

High-temperature corrosion resistance of nickel-base alloy 617 in supercritical carbon dioxide environment

Corrosion Behaviors of Heat-Resisting Alloys in High Temperature Carbon Dioxide

Microstructure and Tensile Properties of Diffusion Bonded Austenitic Fe-Base Alloys—Before and After Exposure to High Temperature Supercritical-CO2

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