Effects of H<sub>2</sub>S/CO<sub>2</sub> Partial Pressures on Pitting Behavior of Super Duplex Stainless Steel UNS S32750 in a Environment of High Temperature and High Chloride Content

FAN Xuehua; YU Yong; CHEN Lijuan; CHI Yao; LIU Yiying; LIU Chang

doi:10.11973/fsyfh-202102006

Corrosion & Protection > 2021 > 42(2): 32-36. > DOI: 10.11973/fsyfh-202102006

FAN Xuehua, YU Yong, CHEN Lijuan, CHI Yao, LIU Yiying, LIU Chang. Effects of H₂S/CO₂ Partial Pressures on Pitting Behavior of Super Duplex Stainless Steel UNS S32750 in a Environment of High Temperature and High Chloride Content[J]. Corrosion & Protection, 2021, 42(2): 32-36. DOI: 10.11973/fsyfh-202102006

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Effects of H₂S/CO₂ Partial Pressures on Pitting Behavior of Super Duplex Stainless Steel UNS S32750 in a Environment of High Temperature and High Chloride Content

1. Beijing Engineering Branch, China Petroleum Engineering & Construction Co., Ltd., Beijing 100085, China;
2. China Petroleum Engineering & Construction Co., Ltd., Beijing 100120, China

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Received Date: March 05, 2019

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Corrosion immersion tests were conducted on super duplex stainless steel (SDSS) UNS S32750 in a environment of high temperature, high chloride concentration and different partial pressures of H₂S and CO₂. The general corrosion rate, pitting corrosion morphology of SDSS UNS S32750 and composition of passive film on its surface by the methods of mass loss, laser confocal microscopy and X-ray photoelectron spectroscopy (XPS) techniques. The results show that the SDSS UNS S32750 had a good general corrosion resistance and pitting corrosion resistance when the partial pressures of H₂S and CO₂ were no higher than 30 kPa and 150 kPa respectively under the test condition. When the partial pressures of H₂S and CO₂ were 100 kPa and 500 kPa respectively, pitting corrosion happened to the SDSS UNS S32750 due to the localized loss of the passive film and consequent anodic dissolution. The passive film was mainly composed of FeS₂, NiO, NiS, Cr₂O₃ and Fe(OH)₂.
- super duplex stainless steel UNS S32750,
- pitting corrosion,
- H₂S,
- CO₂

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[1]	姜放,曹晓燕,施岱艳,等. 双相不锈钢在油气工业中的工程应用[J]. 天然气与石油,2011,29(3):58-60.
[2]	KOPLIKU A,CAVASSI P. Selection of UNS N08825 as cladding material for offshore pipelines transporting sour multiphase hydrocarbon[C]//67th NACE Annual Conference. Houston,TX:NACE Inernational,2002:02042.
[3]	RINCON F P,GONUGUNTLA M,KHOO C A,et al. Design challenges for material selection in sour and high salinity gas and oil production facilities[C]//69th NACE Annual Conference. Houston,TX:NACE International,2017:9244.
[4]	樊学华,陆学同,谢成,等. 酸性高含盐油田管道内腐蚀失效控制与材料选择[J]. 油气储运,2016,35(8):849-855.
[5]	侯冠宇,刘润青,梁平,等. S32750超级双相不锈钢在低温模拟海水中的腐蚀行为[J]. 材料保护,2018,51(5):30-33.
[6]	Petroleum,petrochemical and natural gas industries. Materials selection and corrosion control for oil and gas production systems:BS EN ISO 21457:2010[S]. Lonton:BSI,2010.DOI: 10.3403/30167488.
[7]	Petroleum and natural gas industries. Materials for use in H₂S-containing environments in oil and gas production. Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys:BS EN ISO 15156-3:2015[S]. Lonton:BSI,2015,DOI: 10.3403/30302826.
[8]	POHJANNE P,LEINONEN H,SCOPPIO L,et al. Crevice corrosion induced SSC of 25Cr tungsten alloyed super duplex stainless steel tubing exposed to H₂S/CO₂ sour environment[C]//66th NACE Annual Conference. Houston TX:NACE International,2011:11097.
[9]	HØYDAL A B,HEMMINGSEN T,SKAVÅS E. Crevice corrosion on super duplex stainless steel-effect of potential on critical crevice corrosion temperature[C]//68th NACE Annual Conference. Houston,TX:NACE International,2013:2763.
[10]	中国钢铁工业协会. 低碳钢冷轧薄板铁素体晶粒度测定法:GB/T 4335-2013[S]. 北京:中国标准出版社,2013.
[11]	Standard specification for chromium and chromium-nickel stainless steel plate,sheet,and strip for pressure vessels and for general applications:ASTM A240/A240M-2015[S].[S.l.]:ASTM,2015.
[12]	CUI Z Y,WANG L W,NI H T,et al. Influence of temperature on the electrochemical and passivation behavior of 2507 super duplex stainless steel in simulated desulfurized flue gas condensates[J]. Corrosion Science,2017,118:31-48.
[13]	SAITHALA J R,UBHI H S,ATKINSON J D,et al. Pitting corrosion mechanisms of lean duplex,duplex and super duplex stainless steels in chloride solutions[C]//66th NACE Annual Conference. Houston,TX:NACE International,2011:11255.
[14]	ANDERKO A,CAO L,GUI F,et al. Modeling localized corrosion of corrosion-resistant alloys in oil and gas production environments:part Ⅱ.corrosion potential[J]. Corrosion,2017,73(6):634-647.
[15]	何进,晏敏胜,杨丽景,等. S32750超级双相不锈钢在NaCl溶液中的临界点蚀温度及电化学腐蚀机理[J]. 中国腐蚀与防护学报,2015,35(2):106-112.
[16]	骆鸿,于成雨,毕研峰,等. 酸性环境中CO₂对2205不锈钢应力腐蚀的影响[J]. 腐蚀与防护,2013,34(8):659-662.
[17]	WANG Z,ZHANG L,TANG X,et al. Investigation of the deterioration of passive films in H₂S-containing solutions[J]. International Journal of Minerals Metallurgy and Materials,2017,24(8):943-953.
[18]	王竹. 奥氏体不锈钢在H₂S环境下的腐蚀行为与钝化膜演化研究[D]. 北京:北京科技大学,2018.

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Effects of H2S/CO2 Partial Pressures on Pitting Behavior of Super Duplex Stainless Steel UNS S32750 in a Environment of High Temperature and High Chloride Content

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Effects of H₂S/CO₂ Partial Pressures on Pitting Behavior of Super Duplex Stainless Steel UNS S32750 in a Environment of High Temperature and High Chloride Content