A comparative study on the corrosion behavior of Q235 steel in saturated acidic red and yellow soils

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2023-12-18 DOI:10.1108/acmm-03-2023-2775

Yingying Li, Lanlan Liu, Jun Wang, Song Xu, Hui Su, Yi Xie, Tangqing Wu

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Abstract

Purpose

The purpose of this paper is to study the corrosion behavior of Q235 steel in saturated acidic red and yellow soils.

Design/methodology/approach

The corrosion behavior of Q235 steel in saturated red and yellow soils was compared by weight-loss, SEM/EDS, 3D ultra-depth microscopy and electrochemical measurements.

Findings

R_p of the steel gradually increases and i_corr gradually decreases in both the red and yellow soils with time. The R_p of the steel in the red soil is lower, but its i_corr is higher than that in the yellow soil. The uniform corrosion rate, diameter and density of the corrosion pit on the steel surface in the red soil are greater than those in the yellow soil. Lower pH, higher contents of corrosive anions and high-valence Fe oxides in the red soil are responsible for its higher corrosion rates and local corrosion susceptibility.

Originality/value

This paper investigates the difference in corrosion behavior of carbon steel in saturated acidic red and yellow soils, which can help to understand the mechanism of soil corrosion.

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饱和酸性红土和黄土中 Q235 钢腐蚀行为的比较研究

本文旨在研究 Q235 钢在饱和酸性红壤和黄壤中的腐蚀行为。通过失重法、扫描电镜/电子显微镜、三维超深度显微镜和电化学测量，比较了 Q235 钢在饱和红壤和黄壤中的腐蚀行为。红壤中钢材的 Rp 值低于黄壤，但 icorr 值高于黄壤。红壤中钢材表面的均匀腐蚀速率、腐蚀坑直径和密度均大于黄壤。红壤中较低的 pH 值、较高的腐蚀性阴离子含量和高价铁氧化物是其腐蚀速率和局部腐蚀敏感性较高的原因。

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来源期刊

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.