材料科学
奥氏体
冶金
腐蚀
微观结构
分压
溶解
合金
点蚀
氧化物
巴(单位)
图层(电子)
复合材料
氧气
有机化学
化学
气象学
物理化学
物理
作者
M. A. Shah,Muhammad Taqiyuddin Mawardi Ayob,Naimah Yaakob,Zaidi Embong,Norzila Othman
标识
DOI:10.1080/1478422x.2021.1980647
摘要
This study extensively compares the corrosion behavior of austenitic 316L and Duplex 2205 stainless-steels at different partial pressures of H2S gases. The results showed that the corrosion rate of both steels at 3 bar H2S showed the highest rate among those parameter setups. 316L steel is dominated by both uniform and pitting corrosion under H2S-containing conditions due to the dissolution of Cr present on the alloy surface. According to the cross-sectional analysis, a Cr enrichment layer formed at 0 bar H2S in both steels. After depletion of the Cr compound in the passive film of both steels, Ni was enriched in the outer layer at 3 bar H2S, forming Ni oxide/sulphide compounds within the passive layer. At 15 bar H2S, Mo was enriched in 316L steel, while Fe and Cr were enriched on the 2205 steel surface. Thus, a kinetic study of the chemical composition of both steels was discussed.
科研通智能强力驱动
Strongly Powered by AbleSci AI