摘要
通过可原位测量的管流式实验装置,采用电化学阻抗谱等电化学方法研究B10管在不同温度的天然海水中的腐蚀行为,采用SEM、XPS等方法分析其腐蚀形貌及腐蚀产物成分。结果表明,在10~50℃范围内,随着温度的降低,B10管表面的腐蚀产物膜逐渐致密,膜层耐蚀性逐渐升高,腐蚀速率逐渐降低。在10、25和35℃时,B10管的腐蚀速率随时间的延长逐渐降低,腐蚀产物主要为Cu_(2)O、NiO和FeOOH,对基体有较好的保护作用;在50℃时,B10管表面腐蚀产物为CuO、Ni和FeO,对基体的保护性较差。
The corrosion behavior of B10 Cu-Ni alloy pipe in natural seawater at different tempera-tures was investigated via pipe flow test device capable of in-situ measurement designed independently by means of electrochemical impedance spectroscope(EIS)and other electrochemical methods,and the corrosion morphology and corrosion products composition were analyzed by scanning electron mi-croscope(SEM)and X-ray photoelectron spectroscope(XPS).The results indicated that the corrosion product film on the surface of B10 pipe became denser with the decrease of temperature in the range of 10-50℃,leading to the increase of corrosion resistance of the film and the decrease of corrosion rate of the alloy.The corrosion behavior of B10 pipe in seawater would change with time and temperature.At 10,25 and 35℃,the corrosion rate of B10 pipe gradually decreased with the extension of time,and the cor-rosion products were mainly Cu_(2)O,NiO and FeOOH,resulting in a better protective effect to the matrix.At 50℃,the corrosion products on the surface of B10 pipe were CuO,Ni and FeO,which presented poor protective effect to the substrate.
作者
王晓
李明
刘峰
王忠平
李相波
李宁旺
WANG Xiao;LI Ming;LIU Feng;WANG Zhongping;LI Xiangbo;LI Ningwang(CRRC Qingdao Sifang Co.,Ltd.,Qingdao 266111,China;State Key Laboratory for Marine Corrosion and Protection,Luoyang Ship Material Research Institute,Qingdao 266237,China)
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2023年第6期1329-1338,共10页
Journal of Chinese Society For Corrosion and Protection
关键词
B10铜镍合金管
冲刷腐蚀
温度
原位电化学测试
腐蚀产物膜
90/10 copper-nickel pipe
erosion-corrosion
temperature
real-time electrochemical test-ing
corrosion product film
