摘要
通过宏观形貌检查、金相检验、化学成分分析、X射线衍射分析、扫描电镜及能谱分析等手段,分析了某热电厂锅炉水冷壁管的腐蚀破坏原因。结果表明:水冷壁管的腐蚀破坏主要是由氯离子引起的点腐蚀,干湿交替的使用环境和管壁的较高温度加速了腐蚀。
By macroscopic inspection, metallurgical examination, XRD, SEM and EDS analysis, the corrosion failure of water-cooled pipe was analyzed. The results show that the corrosion failure of water-cooled pipe is mainly caused by pitting corrosion of chloride ion. The alternate wetting and drying working environment as well as high temperature can accelerate the pipe corrosion.
出处
《热加工工艺》
CSCD
北大核心
2013年第16期212-214,共3页
Hot Working Technology
基金
山东省科学院科技发展基金项目[科基合字(2011)第4号]
关键词
水冷壁管
点腐蚀
失效分析
防护措施
water-cooled wall pipe
pitting corrosion
corrosion failure
preventive measures
