Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7893645 | Corrosion Science | 2018 | 10 Pages |
Abstract
Recent high temperature H2S corrosion study reported that a thermodynamically less stable iron oxide layer can also form in addition to iron sulfide. In this work, H2S corrosion experiments were conducted at 120â¯Â°C for different exposure times, ranging from 1 to 21â¯days. The inner layer was identified by Transmission Electron Microscopy (TEM) as Fe3O4 (magnetite); Fe3O4 was always present over time despite it being less stable than iron sulfide. The observed formation sequence of iron sulfide at high temperature was mackinawiteâ¯ââ¯troiliteâ¯ââ¯pyrrhotiteâ¯ââ¯pyrite. The role of the different corrosion product layers in corrosion is discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Shujun Gao, Bruce Brown, David Young, Marc Singer,