摘要
对于处在富氢环境下的钢材料,使用寿命和性能会因氢的存在而大大降低,进而对设备安全运行造成隐患。本文将S32750 SDSS作为研究对象,在不同电流密度下对其进行电化学充氢,通过电化学阻抗谱、动电位极化曲线等电化学测试研究了氢对其耐腐蚀性能的影响。结果显示:提升充氢电流密度,S32750 SDSS容抗弧半径减小,自腐蚀电位、点蚀电位负移,自腐蚀电流、点蚀电流密度增大,材料耐蚀性能变差。
For steel materials in hydrogen rich environments,their service life and performance can be greatly reduced due to the presence of hydrogen,which can pose potential hazards to the safe operation of equipment.In this paper,S32750 SDSS was taken as the research object and subjected to electrochemical hydrogen charging at different current densities.The effect of hydrogen on its corrosion resistance was studied through electrochemical tests such as open circuit potential,electrochemical impedance spectroscopy,and potentiodynamic polarization curves.The results show that increasing the hydrogen charging current density decreases the open circuit potential of the S32750 SDSS,decreases the capacitive arc radius,negatively shifts the self-corrosion potential and pitting potential,increases the self-corrosion current and pitting current density,and degrades the corrosion resistance of the material.
作者
蒋进
侯峰
Jiang Jin;Hou Feng(School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai,200030)
出处
《当代化工研究》
CAS
2023年第12期20-23,共4页
Modern Chemical Research
