Corrosion behavior and lifetime prediction of VM12, Sanicro 25 and Inconel 617 in supercritical carbon dioxide at 600 °C

Gui, Yong; Liang, Zhiyuan; Shao, Huaishuang

doi:10.1016/j.corsci.2020.108870

Cited by 36 publications

(18 citation statements)

References 29 publications

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“…Therefore, more attention should be paid to the features of oxide structure of conventional alloys, such as FMs, austenitic steels and nickel-base alloys. [36][37][38][39]. Schematic diagrams of typical cross-section of conventional alloys corroded in high temperature CO2 after time t. (b) 9-12Cr FMs [17,24,34,38,[40][41][42][43][44][45].…”

Section: Corrosion Kineticsmentioning

confidence: 99%

“…It has been reported that 9-12Cr ferritic steels and 9-12Cr martensitic steels possessed similar oxidation behaviors in high temperature CO2 [17,22]. As shown in Figure 5a [17], 9Cr ferritic steel forms a [36][37][38][39]. Schematic diagrams of typical cross-section of conventional alloys corroded in high temperature CO 2 after time t. (b) 9-12Cr FMs [17,24,34,38,[40][41][42][43][44][45].…”

Section: Fm Steelmentioning

confidence: 99%

“…Austenitic steels have been widely used as structural materials for core components due to their high heat conductivity, good high-temperature mechanical properties, high resistance to corrosion and relatively low cost. When the temperature was higher than 550 • C in a CO 2 environment, it was demonstrated that the austenitic steel showed higher oxidation resistance than the 9-12Cr FMs [22,26,38,39] as it formed a protective chromia scale on the surface (Figure 7a) [19]. After all, the oxidation resistance of austenitic steels relies on their ability to rapidly form a uniform chromia scale on the surface as this scale is able to slow down the oxidation of the substrate.…”

Section: Austenitic Steelmentioning

confidence: 99%

“…The oxygen partial pressure makes oxidation inevitable, but such low carbon activity values do not seem to pose a threat to conventional materials in terms of carburization. However, an abundance of results shows that FMs, austenitic steels and nickel-base alloys can be attacked by carbon in CO 2 gas [29,33,[37][38][39]54,[96][97][98].…”

Section: Driving Force Of Carburizationmentioning

confidence: 99%

“…Figure 4. (a) Schematic diagram of typical corrosion kinetics of conventional alloys in high temperature CO 2[36][37][38][39]. Schematic diagrams of typical cross-section of conventional alloys corroded in high temperature CO 2 after time t. (b) 9-12Cr FMs[17,24,34,38,[40][41][42][43][44][45].…”

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confidence: 99%

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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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