Q235和Q345钢在武汉大气环境中24个月的腐蚀行为

余建飞, 陈志坚, 张明, 周学杰, 陈昊, 吴军, 杨琴

doi:10.16577/j.issn.1001-1560.2025.0006

材料保护 >

2025 , Vol. 58 >Issue 1: 56 - 63

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0006

研究论文

Q235和Q345钢在武汉大气环境中24个月的腐蚀行为

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¹国网湖北省电力有限公司电力科学研究院； ²中国机械总院集团武汉材料保护研究所有限公司； ³中国地质大学(武汉)地质过程与矿产资源国家重点实验室

陈志坚(1997－)，助理工程师，主要研究方向为材料环境腐蚀，电话:18771087124，E-mail:lurauion＠163.com

收稿日期: 2024-04-02

修回日期: 2024-08-26

录用日期: 2024-08-28

网络出版日期: 2025-02-28

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Corrosion Behavior of Q235 and Q345 Steel in Wuhan Atmospheric Environment for 24 Months

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(1.State Grid Hubei Electric Power Co.， Ltd.， Electric Power Scientific Research Institute， Wuhan 430077， China；2.China Academy of Machinery Wuhan Research Institute of Materials Protection Co.， Ltd.， Wuhan 430030， China；3.State Key Laboratory of Geological Processes and Mineral Resources， China University of Geosciences， Wuhan 430074， China)

CHEN Zhijian，Assistant Engineer， Research Focus: Material Environmental Corrosion， Tel.: 18771087124，E-mail: lurauion＠163.com

Received date: 2024-04-02

Revised date: 2024-08-26

Accepted date: 2024-08-28

Online published: 2025-02-28

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摘要

为研究输电铁塔设备常用Q235 和Q345 钢在湖北武汉大气环境中的腐蚀行为，在武汉大气曝晒站进行了24 个月户外大气曝晒试验，采用宏观形貌分析、微观形貌分析、XRD 分析和电化学测试等手段进行试样分析。结果表明:Q235 腐蚀失重约为Q345 腐蚀失重的1.5 倍；Q235 和Q345 的腐蚀产物都主要为γ-FeOOH、α-FeOOH和Fe3O4；2 种钢在腐蚀的过程中受阳极溶解反应控制，Q345 的耐蚀性优于Q235，二者的锈层稳定性均随曝晒时间的延长而更加稳定，自腐蚀电位增大，腐蚀电流密度减小。

关键词： Q235; Q345; 大气腐蚀; 武汉

本文引用格式

余建飞, 陈志坚, 张明, 周学杰, 陈昊, 吴军, 杨琴 . Q235和Q345钢在武汉大气环境中24个月的腐蚀行为[J]. 材料保护, 2025 , 58(1) : 56 -63 . DOI: 10.16577/j.issn.1001-1560.2025.0006

Abstract

In order to study the corrosion behavior of Q235 and Q345 steel commonly used in transmission tower equipment in the atmospheric environment of Wuhan， Hubei， a 24-month outdoor atmospheric exposure test was conducted at the Wuhan atmospheric exposure station.The samples were analyzed by macroscopic morphology analysis， microscopic morphology analysis， XRD analysis and electrochemical testing.Results showed that the corrosion weight loss of Q235 was about 1.5 times that of Q345.The corrosion products of Q235 and Q345 were mainly γ-FeOOH， α-FeOOH and Fe3 O4.Both types of steels were controlled by the anodic dissolution reaction during the corrosion process， and Q345 had better corrosion resistance than Q235.The stability of rust layers on Q235 and Q345 steel became more stable with prolonged exposure time.In addition， the self-corrosion potential increased， and the corrosion current density decreased.

Key words： Q235; Q345; atmospheric corrosion; Wuhan

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