The Effect of H 2 S Pressure on the Formation of Multiple Corrosion Products on 316L Stainless Steel Surface.

Autor: Shah M; DNVGL Malaysia Sdn. Bhd., Level 18, Menara Prestige, No. 1, Jalan Pinang, Kuala Lumpur 50450, Malaysia.; Department of Applied Physics, Faculty of Science and Technology, The National University of Malaysia (UKM), Bangi 43600, Selangor, Malaysia., Ayob MTM; DNVGL Malaysia Sdn. Bhd., Level 18, Menara Prestige, No. 1, Jalan Pinang, Kuala Lumpur 50450, Malaysia., Rosdan R; DNVGL Malaysia Sdn. Bhd., Level 18, Menara Prestige, No. 1, Jalan Pinang, Kuala Lumpur 50450, Malaysia., Yaakob N; Center of Industrial Process Reliability and Sustainability (INPRES), Faculty of Chemical Engineering, Universiti Teknologi MARA (UiTM), Shah Alam 40450, Selangor, Malaysia., Embong Z; Faculty of Applied Science and Technology, Tun Hussein Onn University of Malaysia (UTHM), KM 1. Jalan Panchor, Muar 84600, Johor, Malaysia., Othman NK; Department of Applied Physics, Faculty of Science and Technology, The National University of Malaysia (UKM), Bangi 43600, Selangor, Malaysia.
Jazyk: angličtina
Zdroj: TheScientificWorldJournal [ScientificWorldJournal] 2020 Jul 26; Vol. 2020, pp. 3989563. Date of Electronic Publication: 2020 Jul 26 (Print Publication: 2020).
DOI: 10.1155/2020/3989563
Abstrakt: H 2 S gas when exposed to metal can be responsible for both general and localized corrosion, which depend on several parameters such as H 2 S concentration and the corrosion product layer formed. Therefore, the formation of passive film on 316L steel when exposed to H 2 S environment was investigated using several analysis methods such as FESEM and STEM/EDS analyses, which identified a sulfur species underneath the porous structure of the passive film. X-ray photoelectron spectroscopy analysis demonstrated that the first layer of CrO 3 and Cr 2 O 3 was dissolved, accelerated by the presence of H 2 S-Cl - . An FeS 2 layer was formed by incorporation of Fe and sulfide; then, passivation by Mo took place by forming a MoO 2 layer. NiO, Ni(OH) 2 , and NiS barriers are formed as final protection for 316L steel. Therefore, Ni and Mo play an important role as a dual barrier to maintain the stability of 316L steel in high pH 2 S environments. For safety concern, this paper is aimed to point out a few challenges dealing with high partial pressure of H 2 S and limitation of 316L steel under highly sour condition for the oil and gas production system.
Competing Interests: The authors declare that there are no conflicts of interest regarding the publication of this paper.
(Copyright © 2020 M. Shah et al.)
Databáze: MEDLINE
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