Corrosion of austenitic and ferritic-martensitic steels exposed to supercritical carbon dioxide

Tan, Lizhen; Anderson, Mark; Taylor, D. F.; Allen, Todd R.

doi:10.1016/j.corsci.2011.06.002

Cited by 125 publications

(44 citation statements)

References 17 publications

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“…To illustrate the limited sCO 2 data available above 700 °C and 200 bar, the diamond symbols in Fig. attempt to summarize the conditions explored in previous sCO 2 compatibility evaluations . In the presence of CO 2 , there is a concern about internal carburization (despite the very low C activity in the gas, ∼10 −14 atm at 750 °C), as was observed 50 years ago for conventional austenitic stainless steel and alloy 600 in only 1 bar CO 2 .…”

Section: Introductionmentioning

confidence: 97%

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Effect of pressure on supercritical CO₂ compatibility of structural alloys at 750 °C

Pint

Brese

Keiser

2016

Materials & Corrosion

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Several power generation technologies have interest in employing a supercritical CO2 (sCO2) cycle but relatively little compatibility work has been conducted at the target pressure range of 200–300 bar, particularly at ≥700 °C. With the goal of utilizing lower pressure data sets (especially with controlled O2 and H2O contents), this initial assessment compared the effect of CO2 pressure at 1–300 bar on the compatibility of potential Fe‐ and Ni‐base structural alloys after 500 h exposures at 750 °C. For highly‐alloyed alumina‐ and chromia‐forming alloys, a minimal effect of pressure was observed on the mass change and reaction products, which were similar to those observed in 1 bar dry air, CO2, CO2–0.15%O2 and CO2–10%H2O. After these relatively short exposures, there was no obvious indication of internal carburization and the Cr depletion in the precipitation strengthened Ni‐base alloys (740 and 282) was minimal. In addition to coupons, 25 mm long tensile specimens of alloy 740, 247, 310HCbN, and E‐Brite (Fe–Cr) were exposed in each condition but did not show any detrimental effect of the high‐purity CO2 environments on room temperature tensile properties.

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Section: Introductionmentioning

confidence: 97%

“…Previous and current sCO 2 studies as a function of CO 2 temperature and pressure. Diamonds show prior exposures at CEA , INL , MIT , and Wisconsin , stars show prior ORNL studies and circles show current conditions. The design limits of the alloy 282 autoclave are shown for reference…”

Section: Introductionmentioning

confidence: 99%

Effect of pressure on supercritical CO₂ compatibility of structural alloys at 750 °C

Pint

Brese

Keiser

2016

Materials & Corrosion

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“…However, combustion impurities in the sCO 2 are a concern. With ppm level of impurities, typical of indirect cycles, most sCO 2 compatibility studies have shown protective behavior for highly alloyed Fe‐ and Ni‐base structural alloys . Nevertheless, commercial sCO 2 systems may start with lower purity CO 2 compared to what is used in most laboratory experiments.…”

Section: Introductionmentioning

confidence: 99%

Effect of pressure and impurities on oxidation in supercritical CO₂

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Lehmusto

Lance

et al. 2019

Materials & Corrosion

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Both indirect‐ and direct‐fired supercritical CO2 cycles for high‐efficiency power generation are expected to have impurities that may greatly alter the compatibility of Fe‐ and Ni‐based structural alloys in these environments. Recent work has attempted to quantify reaction rates at 750°C in simulated laboratory environments with controlled impurity levels at ambient pressure, as well as under supercritical conditions (30 MPa). With low impurity levels in research and industrial‐grade CO 2, pressure appeared to have only a limited effect on oxide thickness and internal oxidation and reaction products were similar to those formed in laboratory air. However, a direct‐fired simulation at 750°C/30 MPa in CO 2 + 1%O 2 + 0.25%H 2O has found an increased mass gain and characterization after 2,500‐hr exposures have found thicker reaction products, especially for Fe‐based alloys. At these impurity levels, pressure may have a significant effect on the role of impurities.

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“…The corrosion and carburization behavior of several candidate materials has been studied in S-CO 2 environments at various temperatures (500-750 • C) and pressures (20)(21)(22)(23)(24)(25), conditions relevant to SFR and advanced ultra-supercritical (A-USC) fossil plant operation [12][13][14][15][16][17][18][19][20][21][22][23][24]. According to those studies, for Fe-based alloys on which Fe-and Cr-rich oxides were formed, carburization was observed at the oxide layer/matrix interface and underneath the oxide layer during S-CO 2 exposure at 550-650 • C [6,15,18].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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Corrosion of austenitic and ferritic-martensitic steels exposed to supercritical carbon dioxide

Cited by 125 publications

References 17 publications

Effect of pressure on supercritical CO₂ compatibility of structural alloys at 750 °C

Effect of pressure on supercritical CO₂ compatibility of structural alloys at 750 °C

Effect of pressure and impurities on oxidation in supercritical CO₂

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

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Corrosion of austenitic and ferritic-martensitic steels exposed to supercritical carbon dioxide

Cited by 125 publications

References 17 publications

Effect of pressure on supercritical CO2 compatibility of structural alloys at 750 °C

Effect of pressure on supercritical CO2 compatibility of structural alloys at 750 °C

Effect of pressure and impurities on oxidation in supercritical CO2

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

Contact Info

Product

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Effect of pressure on supercritical CO₂ compatibility of structural alloys at 750 °C

Effect of pressure on supercritical CO₂ compatibility of structural alloys at 750 °C

Effect of pressure and impurities on oxidation in supercritical CO₂