唐建群
,
巩建鸣
,
涂善东
中国腐蚀与防护学报
利用动电位极化和交流阻抗技术，研究了SPV50Q钢在含H2S酸性环境下的腐蚀特性。结果表明，H2S的存在对钢腐蚀过程影响很大，腐蚀速度随H2S浓度的增大而增大；随pH值的降低和溶液温度的升高，钢的腐蚀速度亦在不断增强；尽管随浸泡时间的延长，感抗弧半径不断增大，但其变化幅度不大，并在一定时间后减小，表明钢表面所形成的硫化物膜保护性较差，不能有效抑制钢的腐蚀。
关键词:
动电位极化
,
EIS
,
SPV50Q steel
,
H2S
Haibo LU
材料科学技术（英文）
A nanocrystalline coating of Cu-20Zr (in wt~pct) was obtained on glass by magnetron sputtering. The corrosion behavior of the Cu-20Zr film in 0.001 mol/L HCl solution was investigated using potentiodynamic polarization and in situ electrochemical scanning-tunneling-microscopy (ECSTM). Results demonstrated that the film exhibits active behavior. Microscopic pitting corrosion and tunneling are caused by localized electrodissolution of Zr atoms and the diffusion of Cu atoms at surface defects.
关键词:
Magnetron sputtering
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null
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null
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