理化检验-物理分册2025，Vol.61Issue(10)：1-4,4.DOI:10.11973/lhjy-wl250100
2205双相不锈钢管路腐蚀泄漏原因
Reasons for corrosion and leakage of 2205 duplex stainless steel pipelines
陈洁明 1霍玉雯 2李雪峰 2郭海霞 2刘晓勇 1张欣耀1
作者信息
- 1. 中国船舶集团有限公司 第七二五研究所,洛阳 471023||海洋腐蚀与防护全国重点实验室,洛阳 471023
- 2. 中国船舶集团有限公司 第七二五研究所,洛阳 471023
- 折叠
摘要
Abstract
A leakage occurred in the 2205 duplex stainless steel wastewater pipeline of a certain chemical plant.The causes of pipeline leakage were analyzed using macroscopic observation,chemical composition analysis,corrosion depth testing,metallographic examination,scanning electron microscopy and energy spectrum analysis.The results show that the 2205 stainless steel pipeline experienced pitting corrosion,with many granular σ phases on the inner wall of the pipe,which reduced the pitting corrosion resistance of materials.Under acidic conditions and the action of chloridion,pitting corrosion pits emerged and rapidly developed,ultimately led to corrosion perforation of the pipeline.关键词
2205双相不锈钢/点腐蚀/σ相/显微组织/氯离子Key words
2205 duplex stainless steel/pitting corrosion/σ phase/microstructure/chloridion分类
通用工业技术引用本文复制引用
陈洁明,霍玉雯,李雪峰,郭海霞,刘晓勇,张欣耀..2205双相不锈钢管路腐蚀泄漏原因[J].理化检验-物理分册,2025,61(10):1-4,4.
