Corrosion and Carburization Behaviour of Ni-xCr Binary Alloys in a High-Temperature Supercritical-Carbon Dioxide Environment

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

doi:10.1007/s11085-017-9811-8

Cited by 38 publications

(7 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At present, there are two main forms of accumulated carbon layer: amorphous carbon layer and graphite. As shown in Figure 18b, the formation of amorphous carbon layer was observed at the oxide/matrix interface of Ni14Cr binary alloy after 200 h corrosion in 600 • C/20 MPa S-CO 2 [97]. The graphite was observed in Fe9Cr1Mo steel (Figure 18c), which was corroded in 600 • C/42 bar CO 2 gas for 20,000 h [104].…”

Section: Consequences Of Carburizationmentioning

confidence: 83%

“…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%

See 1 more Smart Citation

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

Yang¹,

Qian²,

Kuang³

2022

Materials

View full text Add to dashboard Cite

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.

show abstract

Section: Consequences Of Carburizationmentioning

confidence: 83%

Section: Driving Force Of Carburizationmentioning

confidence: 99%

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

Yang¹,

Qian²,

Kuang³

2022

Materials

View full text Add to dashboard Cite

show abstract

“…Higher Cr content makes the alloy more inclined to form chromia films in the corrosion to obtain oxidation and carburization resistance [42]. For nickel-based alloys, it is suggested that the Cr content of at least 14% is required to form a protective chromia layer [43].…”

Section: Effect Of Cr Contentmentioning

confidence: 99%

Review on the Corrosion Behaviour of Nickel-Based Alloys in Supercritical Carbon Dioxide under High Temperature and Pressure

et al. 2023

View full text Add to dashboard Cite

Supercritical carbon dioxide (S-CO2) has the advantages of amphoteric liquid and gas, which possesses many unique characteristics, such as good compressibility, high density, high solubility, good fluidity and low viscosity. The Brayton cycle with S-CO2 is considered to have many promising applications, especially for power conversion industries. However, the corrosion and degradation of structural materials hinder the development and application of the Brayton cycle with S-CO2. Nickel-based alloys have the best corrosion resistance in S-CO2 environments compared to austenitic stainless steels and ferritic/martensitic steels. Thus, the present article mainly reviews the corrosion behaviour of nickel-based alloys in S-CO2 under high temperature and pressure. The effect of alloying elements and environment parameters on the corrosion behaviour of different nickel-based alloys are systematically summarized. The conclusion and outlook are given at the end.

show abstract

“…Then, C deposition occurs at the oxide/substrate interface through the Boudouard Reaction (2) during SCO 2 exposure [37]:…”

Section: Corrosion and Carburization Mechanismmentioning

confidence: 99%

Compatibility of Different Commercial Alloys in High-Temperature, Supercritical Carbon Dioxide

et al. 2022

View full text Add to dashboard Cite

In this work, the compatibility and long-term integrity of candidate structural materials, including the austenitic stainless steel 316NG, the Fe-Ni-based alloy 800H, and the Ni-based alloy 625, were tested in high-temperature and high-pressure SCO2. The exposure time was up to 3000 h. The results showed that the corrosion kinetics approximately followed a near-cubic law for 316NG and 800H. After 3000 h exposure, all oxide layers, mainly composed of Cr2O3, were continuous, compact, and protective, and their thicknesses were about 21~45 nm, 64~88 nm, and 34~43 nm, respectively. In the case of carburization, dark spots corresponding carbon deposition were observed on the surface and a little enriched in the underside of the oxide for 800H. Moreover, the enrichment of trace elements was found at the oxide/substrate interface through GDOES and TEM analyses, i.e., the enrichment of Mn and Si for 316NG, the enrichment of Mn, Si, Al, and Ti for 800H, and the enrichment of Ti and Al for alloy 625.

show abstract

Corrosion and Carburization Behaviour of Ni-xCr Binary Alloys in a High-Temperature Supercritical-Carbon Dioxide Environment

Cited by 38 publications

References 23 publications

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

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

Review on the Corrosion Behaviour of Nickel-Based Alloys in Supercritical Carbon Dioxide under High Temperature and Pressure

Compatibility of Different Commercial Alloys in High-Temperature, Supercritical Carbon Dioxide

Contact Info

Product

Resources

About