Work

Corrosion behavior of low-alloy steel in Xinjiang's arid atmosphere: Divergent protective effects of Cr and Mn

Year: 2025

Type: article

Abstract: Through systematic long-term atmospheric exposure, the corrosion performance and protective mechanisms of rust layers on low-alloy structural steels in Xinjiang's arid climate were comprehensively evaluated. Results demonstrate that MnO 2 and MnFe 2 O 4 can moderately enhance the compactness of the rust layer. However, the combined effects of strong wind-sand erosion and high diurnal temperature variations induce significant internal stresses within the rust layer, leading to crack formation. Notably, Cr alloying demonstrates superior corrosion mitigation effects through dual mechanisms: (1) catalytically facilitating the preferential formation of thermodynamically stable α-FeOOH, (2) generation of highly protective (FeCr 2 O 4 ), Cr(OH) 3 and Cr 2 O 3 .

Source: Journal of Materials Research and Technology

DOI: 10.1016/j.jmrt.2025.07.173

Authors: Tao Wang, SiWei Zhang, ShenRong Lu, Cuiwei Du, Xiaogang Li

Institution: University of Science and Technology Beijing

Language: English

Topic: Corrosion Behavior and Inhibition

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,640

Funder: University of Science and Technology Beijing