Corrosion of a stainless steel and nickel-based alloys in high temperature supercritical carbon dioxide environment

V. Firouzdor; K. Sridharan; G. Cao; M. Anderson; T. R. Allen

doi:10.1016/j.corsci.2012.11.041

Corrosion of a stainless steel and nickel-based alloys in high temperature supercritical carbon dioxide environment

V. Firouzdor
, K. Sridharan
, G. Cao
, M. Anderson
, T. R. Allen

Nuclear Science & Technology

Research output: Contribution to journal › Article › peer-review

226 Scopus citations

Abstract

Corrosion of four alloys has been studied in supercritical carbon dioxide at 650°C and 20MPa, specifically AL-6XN stainless steel and three nickel-based alloys, PE-16, Haynes 230, and Alloy 625. The tests were performed for exposure durations of up to 3000h with samples being removed for analyses at 500h intervals. The corrosion performance of the alloys was evaluated by weight change measurements, and the surface oxide layers were characterized by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. Weight gain measurements showed that the Al-6XN stainless steel exhibited the least corrosion resistance while the weight gains were nearly similar for the other alloys. The oxide layer in AL-6XN stainless steel was composed of large equiaxed grained outer layer of Fe₃O₄ (magnetite) and an inner layer of FeCr₂O₄. Oxide spallation was observed in this stainless steel even after 500h exposure. In all alloys, Cr-rich oxides phases of Cr₂O₃ and Cr_1.4Fe_0.7O₃ were identified as the protective layers. In alloy PE-16 a thin layer of aluminum oxide formed that promoted the corrosion resistance of the alloy. Cr₂O₃ was identified as the main protective oxide layer in nickel base alloys Haynes 230 and 625.

Original language	English
Pages (from-to)	281-291
Number of pages	11
Journal	Corrosion Science
Volume	69
DOIs	https://doi.org/10.1016/j.corsci.2012.11.041
State	Published - Apr 2013

Keywords

Austenitic stainless steel
C. Oxidation
High temperature corrosion
Nickel-based super alloys

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10.1016/j.corsci.2012.11.041

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title = "Corrosion of a stainless steel and nickel-based alloys in high temperature supercritical carbon dioxide environment",

abstract = "Corrosion of four alloys has been studied in supercritical carbon dioxide at 650°C and 20MPa, specifically AL-6XN stainless steel and three nickel-based alloys, PE-16, Haynes 230, and Alloy 625. The tests were performed for exposure durations of up to 3000h with samples being removed for analyses at 500h intervals. The corrosion performance of the alloys was evaluated by weight change measurements, and the surface oxide layers were characterized by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. Weight gain measurements showed that the Al-6XN stainless steel exhibited the least corrosion resistance while the weight gains were nearly similar for the other alloys. The oxide layer in AL-6XN stainless steel was composed of large equiaxed grained outer layer of Fe3O4 (magnetite) and an inner layer of FeCr2O4. Oxide spallation was observed in this stainless steel even after 500h exposure. In all alloys, Cr-rich oxides phases of Cr2O3 and Cr1.4Fe0.7O3 were identified as the protective layers. In alloy PE-16 a thin layer of aluminum oxide formed that promoted the corrosion resistance of the alloy. Cr2O3 was identified as the main protective oxide layer in nickel base alloys Haynes 230 and 625.",

keywords = "Austenitic stainless steel, C. Oxidation, High temperature corrosion, Nickel-based super alloys",

author = "V. Firouzdor and K. Sridharan and G. Cao and M. Anderson and Allen, \{T. R.\}",

note = "Funding Information: The authors would like to acknowledge the support from the Knolls Atomic Power Laboratory in this work The usage of 1530 SEM and STOE X-ray diffraction equipment is in part made possible by the National Science Foundation{\textquoteright}s support to the University of Wisconsin{\textquoteright}s Materials Science Center. ",

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doi = "10.1016/j.corsci.2012.11.041",

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pages = "281--291",

journal = "Corrosion Science",

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AU - Firouzdor, V.

AU - Sridharan, K.

AU - Cao, G.

AU - Anderson, M.

AU - Allen, T. R.

N1 - Funding Information: The authors would like to acknowledge the support from the Knolls Atomic Power Laboratory in this work The usage of 1530 SEM and STOE X-ray diffraction equipment is in part made possible by the National Science Foundation’s support to the University of Wisconsin’s Materials Science Center.

PY - 2013/4

Y1 - 2013/4

N2 - Corrosion of four alloys has been studied in supercritical carbon dioxide at 650°C and 20MPa, specifically AL-6XN stainless steel and three nickel-based alloys, PE-16, Haynes 230, and Alloy 625. The tests were performed for exposure durations of up to 3000h with samples being removed for analyses at 500h intervals. The corrosion performance of the alloys was evaluated by weight change measurements, and the surface oxide layers were characterized by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. Weight gain measurements showed that the Al-6XN stainless steel exhibited the least corrosion resistance while the weight gains were nearly similar for the other alloys. The oxide layer in AL-6XN stainless steel was composed of large equiaxed grained outer layer of Fe3O4 (magnetite) and an inner layer of FeCr2O4. Oxide spallation was observed in this stainless steel even after 500h exposure. In all alloys, Cr-rich oxides phases of Cr2O3 and Cr1.4Fe0.7O3 were identified as the protective layers. In alloy PE-16 a thin layer of aluminum oxide formed that promoted the corrosion resistance of the alloy. Cr2O3 was identified as the main protective oxide layer in nickel base alloys Haynes 230 and 625.

AB - Corrosion of four alloys has been studied in supercritical carbon dioxide at 650°C and 20MPa, specifically AL-6XN stainless steel and three nickel-based alloys, PE-16, Haynes 230, and Alloy 625. The tests were performed for exposure durations of up to 3000h with samples being removed for analyses at 500h intervals. The corrosion performance of the alloys was evaluated by weight change measurements, and the surface oxide layers were characterized by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. Weight gain measurements showed that the Al-6XN stainless steel exhibited the least corrosion resistance while the weight gains were nearly similar for the other alloys. The oxide layer in AL-6XN stainless steel was composed of large equiaxed grained outer layer of Fe3O4 (magnetite) and an inner layer of FeCr2O4. Oxide spallation was observed in this stainless steel even after 500h exposure. In all alloys, Cr-rich oxides phases of Cr2O3 and Cr1.4Fe0.7O3 were identified as the protective layers. In alloy PE-16 a thin layer of aluminum oxide formed that promoted the corrosion resistance of the alloy. Cr2O3 was identified as the main protective oxide layer in nickel base alloys Haynes 230 and 625.

KW - Austenitic stainless steel

KW - C. Oxidation

KW - High temperature corrosion

KW - Nickel-based super alloys

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DO - 10.1016/j.corsci.2012.11.041

M3 - Article

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VL - 69

SP - 281

EP - 291

JO - Corrosion Science

JF - Corrosion Science

ER -

Corrosion of a stainless steel and nickel-based alloys in high temperature supercritical carbon dioxide environment

Abstract

Keywords

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