Open AccessEffect of Cr on the Characteristic of Rust Layer Formed on Low Alloy Steels Immersed in Flowing 3.5%NaCl Solution
Author(s) -
Jixian Yang,
Shan Jiang,
Feifan Xu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1626/1/012175
Subject(s) - materials science , alloy , layer (electronics) , rust (programming language) , metallurgy , raman spectroscopy , corrosion , cathodic protection , amorphous solid , alloy steel , chemical engineering , composite material , chemistry , electrochemistry , crystallography , electrode , physics , computer science , optics , programming language , engineering
The role of Cr concentrated inrust layer formed on Cr-containing steels was investigated. Corrosion products formed on these steels were analyzed by usingXPS, XRD,TEM, and Raman spectroscopy. The result indicates that amorphous Cr(OH)3 and (FeCr)3O4 formed on the Cr-containing steelsresulted in the formation of ultrafine corrosion-product particles and, consequently, a compact rust layer with low electronic conductivity. The Cr-containing rust layer servedmainly to inhibit the cathodic reaction of O2reduction, therebyimproving the flow-accelerated corrosionresistance of the low alloy steel.