Title: Corrosion performance of 3%Cr steel in CO<sub>2</sub> -H<sub>2</sub> S environment compared with carbon steel
Abstract:Corrosion behavior of 3wt.% Cr low alloy steel in aqueous CO 2 ‐H 2 S environment was investigated in comparison with API X60 carbon steel using high temperature and high pressure autoclave. The corro...Corrosion behavior of 3wt.% Cr low alloy steel in aqueous CO 2 ‐H 2 S environment was investigated in comparison with API X60 carbon steel using high temperature and high pressure autoclave. The corrosion performance of 3Cr steel was analyzed by XRD, XPS, SEM, EDS and EIS. In CO 2 ‐H 2 S environment, the corrosion scale of 3Cr steel possessed a triple structure of the outer layer of FeS, the middle layer of FeCO 3 and the inner layer of FeCO 3 , Cr(OH) 3 and Cr 2 O 3 . FeS mainly formed through the dissolution and re‐deposition from FeCO 3 . Hydrolytic action of Cr 3+ during corrosion affected the formation process of corrosion scale of 3Cr steel. The Cr‐rich layer of the corrosion scale of 3Cr steel blocked the ions transport through corrosion scale to improve corrosion resistance of 3Cr steel. For H 2 S‐containg CO 2 environment, 3Cr steel still exhibited higher corrosion resistance than X60 carbon steel and would be a promising material option in such environment.Read More
Publication Year: 2015
Publication Date: 2015-03-13
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 30
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot